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Publisher: Elsevier   (Total: 3177 journals)

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Showing 1 - 200 of 3177 Journals sorted alphabetically
A Practical Logic of Cognitive Systems     Full-text available via subscription   (Followers: 9)
AASRI Procedia     Open Access   (Followers: 14)
Academic Pediatrics     Hybrid Journal   (Followers: 28, SJR: 1.402, h-index: 51)
Academic Radiology     Hybrid Journal   (Followers: 22, SJR: 1.008, h-index: 75)
Accident Analysis & Prevention     Partially Free   (Followers: 90, SJR: 1.109, h-index: 94)
Accounting Forum     Hybrid Journal   (Followers: 25, SJR: 0.612, h-index: 27)
Accounting, Organizations and Society     Hybrid Journal   (Followers: 33, SJR: 2.515, h-index: 90)
Achievements in the Life Sciences     Open Access   (Followers: 5)
Acta Anaesthesiologica Taiwanica     Open Access   (Followers: 6, SJR: 0.338, h-index: 19)
Acta Astronautica     Hybrid Journal   (Followers: 378, SJR: 0.726, h-index: 43)
Acta Automatica Sinica     Full-text available via subscription   (Followers: 2)
Acta Biomaterialia     Hybrid Journal   (Followers: 27, SJR: 2.02, h-index: 104)
Acta Colombiana de Cuidado Intensivo     Full-text available via subscription   (Followers: 2)
Acta de Investigación Psicológica     Open Access   (Followers: 3)
Acta Ecologica Sinica     Open Access   (Followers: 8, SJR: 0.172, h-index: 29)
Acta Haematologica Polonica     Free   (Followers: 1, SJR: 0.123, h-index: 8)
Acta Histochemica     Hybrid Journal   (Followers: 3, SJR: 0.604, h-index: 38)
Acta Materialia     Hybrid Journal   (Followers: 237, SJR: 3.683, h-index: 202)
Acta Mathematica Scientia     Full-text available via subscription   (Followers: 5, SJR: 0.615, h-index: 21)
Acta Mechanica Solida Sinica     Full-text available via subscription   (Followers: 9, SJR: 0.442, h-index: 21)
Acta Oecologica     Hybrid Journal   (Followers: 10, SJR: 0.915, h-index: 53)
Acta Otorrinolaringologica (English Edition)     Full-text available via subscription  
Acta Otorrinolaringológica Española     Full-text available via subscription   (Followers: 2, SJR: 0.311, h-index: 16)
Acta Pharmaceutica Sinica B     Open Access   (Followers: 1)
Acta Poética     Open Access   (Followers: 4)
Acta Psychologica     Hybrid Journal   (Followers: 25, SJR: 1.365, h-index: 73)
Acta Sociológica     Open Access  
Acta Tropica     Hybrid Journal   (Followers: 6, SJR: 1.059, h-index: 77)
Acta Urológica Portuguesa     Open Access  
Actas Dermo-Sifiliograficas     Full-text available via subscription   (Followers: 3)
Actas Dermo-Sifiliográficas (English Edition)     Full-text available via subscription   (Followers: 2)
Actas Urológicas Españolas     Full-text available via subscription   (Followers: 3, SJR: 0.383, h-index: 19)
Actas Urológicas Españolas (English Edition)     Full-text available via subscription   (Followers: 1)
Actualites Pharmaceutiques     Full-text available via subscription   (Followers: 6, SJR: 0.141, h-index: 3)
Actualites Pharmaceutiques Hospitalieres     Full-text available via subscription   (Followers: 3, SJR: 0.112, h-index: 2)
Acupuncture and Related Therapies     Hybrid Journal   (Followers: 6)
Acute Pain     Full-text available via subscription   (Followers: 14)
Ad Hoc Networks     Hybrid Journal   (Followers: 11, SJR: 0.967, h-index: 57)
Addictive Behaviors     Hybrid Journal   (Followers: 15, SJR: 1.514, h-index: 92)
Addictive Behaviors Reports     Open Access   (Followers: 7)
Additive Manufacturing     Hybrid Journal   (Followers: 9, SJR: 1.039, h-index: 5)
Additives for Polymers     Full-text available via subscription   (Followers: 22)
Advanced Cement Based Materials     Full-text available via subscription   (Followers: 3)
Advanced Drug Delivery Reviews     Hybrid Journal   (Followers: 131, SJR: 5.2, h-index: 222)
Advanced Engineering Informatics     Hybrid Journal   (Followers: 11, SJR: 1.265, h-index: 53)
Advanced Powder Technology     Hybrid Journal   (Followers: 16, SJR: 0.739, h-index: 33)
Advances in Accounting     Hybrid Journal   (Followers: 8, SJR: 0.299, h-index: 15)
Advances in Agronomy     Full-text available via subscription   (Followers: 12, SJR: 2.071, h-index: 82)
Advances in Anesthesia     Full-text available via subscription   (Followers: 27, SJR: 0.169, h-index: 4)
Advances in Antiviral Drug Design     Full-text available via subscription   (Followers: 2)
Advances in Applied Mathematics     Full-text available via subscription   (Followers: 10, SJR: 1.054, h-index: 35)
Advances in Applied Mechanics     Full-text available via subscription   (Followers: 10, SJR: 0.801, h-index: 26)
Advances in Applied Microbiology     Full-text available via subscription   (Followers: 22, SJR: 1.286, h-index: 49)
Advances In Atomic, Molecular, and Optical Physics     Full-text available via subscription   (Followers: 14, SJR: 3.31, h-index: 42)
Advances in Biological Regulation     Hybrid Journal   (Followers: 4, SJR: 2.277, h-index: 43)
Advances in Botanical Research     Full-text available via subscription   (Followers: 2, SJR: 0.619, h-index: 48)
Advances in Cancer Research     Full-text available via subscription   (Followers: 28, SJR: 2.215, h-index: 78)
Advances in Carbohydrate Chemistry and Biochemistry     Full-text available via subscription   (Followers: 7, SJR: 0.9, h-index: 30)
Advances in Catalysis     Full-text available via subscription   (Followers: 5, SJR: 2.139, h-index: 42)
Advances in Cell Aging and Gerontology     Full-text available via subscription   (Followers: 3)
Advances in Cellular and Molecular Biology of Membranes and Organelles     Full-text available via subscription   (Followers: 12)
Advances in Chemical Engineering     Full-text available via subscription   (Followers: 27, SJR: 0.183, h-index: 23)
Advances in Child Development and Behavior     Full-text available via subscription   (Followers: 10, SJR: 0.665, h-index: 29)
Advances in Chronic Kidney Disease     Full-text available via subscription   (Followers: 10, SJR: 1.268, h-index: 45)
Advances in Clinical Chemistry     Full-text available via subscription   (Followers: 28, SJR: 0.938, h-index: 33)
Advances in Colloid and Interface Science     Full-text available via subscription   (Followers: 19, SJR: 2.314, h-index: 130)
Advances in Computers     Full-text available via subscription   (Followers: 14, SJR: 0.223, h-index: 22)
Advances in Dermatology     Full-text available via subscription   (Followers: 14)
Advances in Developmental Biology     Full-text available via subscription   (Followers: 10)
Advances in Digestive Medicine     Open Access   (Followers: 8)
Advances in DNA Sequence-Specific Agents     Full-text available via subscription   (Followers: 5)
Advances in Drug Research     Full-text available via subscription   (Followers: 21)
Advances in Ecological Research     Full-text available via subscription   (Followers: 42, SJR: 3.25, h-index: 43)
Advances in Engineering Software     Hybrid Journal   (Followers: 27, SJR: 0.486, h-index: 10)
Advances in Experimental Biology     Full-text available via subscription   (Followers: 6)
Advances in Experimental Social Psychology     Full-text available via subscription   (Followers: 42, SJR: 5.465, h-index: 64)
Advances in Exploration Geophysics     Full-text available via subscription   (Followers: 1)
Advances in Fluorine Science     Full-text available via subscription   (Followers: 7)
Advances in Food and Nutrition Research     Full-text available via subscription   (Followers: 53, SJR: 0.674, h-index: 38)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 15)
Advances in Genetics     Full-text available via subscription   (Followers: 15, SJR: 2.558, h-index: 54)
Advances in Genome Biology     Full-text available via subscription   (Followers: 7)
Advances in Geophysics     Full-text available via subscription   (Followers: 6, SJR: 2.325, h-index: 20)
Advances in Heat Transfer     Full-text available via subscription   (Followers: 21, SJR: 0.906, h-index: 24)
Advances in Heterocyclic Chemistry     Full-text available via subscription   (Followers: 9, SJR: 0.497, h-index: 31)
Advances in Human Factors/Ergonomics     Full-text available via subscription   (Followers: 23)
Advances in Imaging and Electron Physics     Full-text available via subscription   (Followers: 2, SJR: 0.396, h-index: 27)
Advances in Immunology     Full-text available via subscription   (Followers: 36, SJR: 4.152, h-index: 85)
Advances in Inorganic Chemistry     Full-text available via subscription   (Followers: 8, SJR: 1.132, h-index: 42)
Advances in Insect Physiology     Full-text available via subscription   (Followers: 2, SJR: 1.274, h-index: 27)
Advances in Integrative Medicine     Hybrid Journal   (Followers: 6)
Advances in Intl. Accounting     Full-text available via subscription   (Followers: 3)
Advances in Life Course Research     Hybrid Journal   (Followers: 8, SJR: 0.764, h-index: 15)
Advances in Lipobiology     Full-text available via subscription   (Followers: 1)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 9)
Advances in Marine Biology     Full-text available via subscription   (Followers: 15, SJR: 1.645, h-index: 45)
Advances in Mathematics     Full-text available via subscription   (Followers: 10, SJR: 3.261, h-index: 65)
Advances in Medical Sciences     Hybrid Journal   (Followers: 6, SJR: 0.489, h-index: 25)
Advances in Medicinal Chemistry     Full-text available via subscription   (Followers: 5)
Advances in Microbial Physiology     Full-text available via subscription   (Followers: 4, SJR: 1.44, h-index: 51)
Advances in Molecular and Cell Biology     Full-text available via subscription   (Followers: 21)
Advances in Molecular and Cellular Endocrinology     Full-text available via subscription   (Followers: 8)
Advances in Molecular Toxicology     Full-text available via subscription   (Followers: 7, SJR: 0.324, h-index: 8)
Advances in Nanoporous Materials     Full-text available via subscription   (Followers: 3)
Advances in Oncobiology     Full-text available via subscription   (Followers: 1)
Advances in Organ Biology     Full-text available via subscription   (Followers: 1)
Advances in Organometallic Chemistry     Full-text available via subscription   (Followers: 15, SJR: 2.885, h-index: 45)
Advances in Parallel Computing     Full-text available via subscription   (Followers: 6, SJR: 0.148, h-index: 11)
Advances in Parasitology     Full-text available via subscription   (Followers: 5, SJR: 2.37, h-index: 73)
Advances in Pediatrics     Full-text available via subscription   (Followers: 24, SJR: 0.4, h-index: 28)
Advances in Pharmaceutical Sciences     Full-text available via subscription   (Followers: 10)
Advances in Pharmacology     Full-text available via subscription   (Followers: 15, SJR: 1.718, h-index: 58)
Advances in Physical Organic Chemistry     Full-text available via subscription   (Followers: 8, SJR: 0.384, h-index: 26)
Advances in Phytomedicine     Full-text available via subscription  
Advances in Planar Lipid Bilayers and Liposomes     Full-text available via subscription   (Followers: 3, SJR: 0.248, h-index: 11)
Advances in Plant Biochemistry and Molecular Biology     Full-text available via subscription   (Followers: 7)
Advances in Plant Pathology     Full-text available via subscription   (Followers: 5)
Advances in Porous Media     Full-text available via subscription   (Followers: 5)
Advances in Protein Chemistry     Full-text available via subscription   (Followers: 17)
Advances in Protein Chemistry and Structural Biology     Full-text available via subscription   (Followers: 18, SJR: 1.5, h-index: 62)
Advances in Psychology     Full-text available via subscription   (Followers: 59)
Advances in Quantum Chemistry     Full-text available via subscription   (Followers: 6, SJR: 0.478, h-index: 32)
Advances in Radiation Oncology     Open Access  
Advances in Small Animal Medicine and Surgery     Hybrid Journal   (Followers: 3, SJR: 0.1, h-index: 2)
Advances in Space Biology and Medicine     Full-text available via subscription   (Followers: 5)
Advances in Space Research     Full-text available via subscription   (Followers: 378, SJR: 0.606, h-index: 65)
Advances in Structural Biology     Full-text available via subscription   (Followers: 5)
Advances in Surgery     Full-text available via subscription   (Followers: 9, SJR: 0.823, h-index: 27)
Advances in the Study of Behavior     Full-text available via subscription   (Followers: 29, SJR: 1.321, h-index: 56)
Advances in Veterinary Medicine     Full-text available via subscription   (Followers: 17)
Advances in Veterinary Science and Comparative Medicine     Full-text available via subscription   (Followers: 13)
Advances in Virus Research     Full-text available via subscription   (Followers: 5, SJR: 1.878, h-index: 68)
Advances in Water Resources     Hybrid Journal   (Followers: 46, SJR: 2.408, h-index: 94)
Aeolian Research     Hybrid Journal   (Followers: 6, SJR: 0.973, h-index: 22)
Aerospace Science and Technology     Hybrid Journal   (Followers: 333, SJR: 0.816, h-index: 49)
AEU - Intl. J. of Electronics and Communications     Hybrid Journal   (Followers: 8, SJR: 0.318, h-index: 36)
African J. of Emergency Medicine     Open Access   (Followers: 6, SJR: 0.344, h-index: 6)
Ageing Research Reviews     Hybrid Journal   (Followers: 9, SJR: 3.289, h-index: 78)
Aggression and Violent Behavior     Hybrid Journal   (Followers: 431, SJR: 1.385, h-index: 72)
Agri Gene     Hybrid Journal  
Agricultural and Forest Meteorology     Hybrid Journal   (Followers: 15, SJR: 2.18, h-index: 116)
Agricultural Systems     Hybrid Journal   (Followers: 31, SJR: 1.275, h-index: 74)
Agricultural Water Management     Hybrid Journal   (Followers: 43, SJR: 1.546, h-index: 79)
Agriculture and Agricultural Science Procedia     Open Access   (Followers: 1)
Agriculture and Natural Resources     Open Access   (Followers: 2)
Agriculture, Ecosystems & Environment     Hybrid Journal   (Followers: 56, SJR: 1.879, h-index: 120)
Ain Shams Engineering J.     Open Access   (Followers: 5, SJR: 0.434, h-index: 14)
Air Medical J.     Hybrid Journal   (Followers: 6, SJR: 0.234, h-index: 18)
AKCE Intl. J. of Graphs and Combinatorics     Open Access   (SJR: 0.285, h-index: 3)
Alcohol     Hybrid Journal   (Followers: 11, SJR: 0.922, h-index: 66)
Alcoholism and Drug Addiction     Open Access   (Followers: 9)
Alergologia Polska : Polish J. of Allergology     Full-text available via subscription   (Followers: 1)
Alexandria Engineering J.     Open Access   (Followers: 1, SJR: 0.436, h-index: 12)
Alexandria J. of Medicine     Open Access   (Followers: 1)
Algal Research     Partially Free   (Followers: 9, SJR: 2.05, h-index: 20)
Alkaloids: Chemical and Biological Perspectives     Full-text available via subscription   (Followers: 2)
Allergologia et Immunopathologia     Full-text available via subscription   (Followers: 1, SJR: 0.46, h-index: 29)
Allergology Intl.     Open Access   (Followers: 5, SJR: 0.776, h-index: 35)
Alpha Omegan     Full-text available via subscription   (SJR: 0.121, h-index: 9)
ALTER - European J. of Disability Research / Revue Européenne de Recherche sur le Handicap     Full-text available via subscription   (Followers: 9, SJR: 0.158, h-index: 9)
Alzheimer's & Dementia     Hybrid Journal   (Followers: 48, SJR: 4.289, h-index: 64)
Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring     Open Access   (Followers: 4)
Alzheimer's & Dementia: Translational Research & Clinical Interventions     Open Access   (Followers: 4)
Ambulatory Pediatrics     Hybrid Journal   (Followers: 6)
American Heart J.     Hybrid Journal   (Followers: 50, SJR: 3.157, h-index: 153)
American J. of Cardiology     Hybrid Journal   (Followers: 50, SJR: 2.063, h-index: 186)
American J. of Emergency Medicine     Hybrid Journal   (Followers: 43, SJR: 0.574, h-index: 65)
American J. of Geriatric Pharmacotherapy     Full-text available via subscription   (Followers: 10, SJR: 1.091, h-index: 45)
American J. of Geriatric Psychiatry     Hybrid Journal   (Followers: 14, SJR: 1.653, h-index: 93)
American J. of Human Genetics     Hybrid Journal   (Followers: 31, SJR: 8.769, h-index: 256)
American J. of Infection Control     Hybrid Journal   (Followers: 26, SJR: 1.259, h-index: 81)
American J. of Kidney Diseases     Hybrid Journal   (Followers: 32, SJR: 2.313, h-index: 172)
American J. of Medicine     Hybrid Journal   (Followers: 42, SJR: 2.023, h-index: 189)
American J. of Medicine Supplements     Full-text available via subscription   (Followers: 3)
American J. of Obstetrics and Gynecology     Hybrid Journal   (Followers: 190, SJR: 2.255, h-index: 171)
American J. of Ophthalmology     Hybrid Journal   (Followers: 62, SJR: 2.803, h-index: 148)
American J. of Ophthalmology Case Reports     Open Access   (Followers: 6)
American J. of Orthodontics and Dentofacial Orthopedics     Full-text available via subscription   (Followers: 6, SJR: 1.249, h-index: 88)
American J. of Otolaryngology     Hybrid Journal   (Followers: 25, SJR: 0.59, h-index: 45)
American J. of Pathology     Hybrid Journal   (Followers: 27, SJR: 2.653, h-index: 228)
American J. of Preventive Medicine     Hybrid Journal   (Followers: 27, SJR: 2.764, h-index: 154)
American J. of Surgery     Hybrid Journal   (Followers: 37, SJR: 1.286, h-index: 125)
American J. of the Medical Sciences     Hybrid Journal   (Followers: 12, SJR: 0.653, h-index: 70)
Ampersand : An Intl. J. of General and Applied Linguistics     Open Access   (Followers: 6)
Anaerobe     Hybrid Journal   (Followers: 4, SJR: 1.066, h-index: 51)
Anaesthesia & Intensive Care Medicine     Full-text available via subscription   (Followers: 61, SJR: 0.124, h-index: 9)
Anaesthesia Critical Care & Pain Medicine     Full-text available via subscription   (Followers: 14)
Anales de Cirugia Vascular     Full-text available via subscription  
Anales de Pediatría     Full-text available via subscription   (Followers: 2, SJR: 0.209, h-index: 27)
Anales de Pediatría (English Edition)     Full-text available via subscription  
Anales de Pediatría Continuada     Full-text available via subscription   (SJR: 0.104, h-index: 3)
Analytic Methods in Accident Research     Hybrid Journal   (Followers: 4, SJR: 2.577, h-index: 7)
Analytica Chimica Acta     Hybrid Journal   (Followers: 39, SJR: 1.548, h-index: 152)
Analytical Biochemistry     Hybrid Journal   (Followers: 164, SJR: 0.725, h-index: 154)
Analytical Chemistry Research     Open Access   (Followers: 10, SJR: 0.18, h-index: 2)
Analytical Spectroscopy Library     Full-text available via subscription   (Followers: 11)
Anesthésie & Réanimation     Full-text available via subscription   (Followers: 1)
Anesthesiology Clinics     Full-text available via subscription   (Followers: 22, SJR: 0.421, h-index: 40)
Angiología     Full-text available via subscription   (SJR: 0.124, h-index: 9)
Angiologia e Cirurgia Vascular     Open Access   (Followers: 1)

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Journal Cover Agriculture and Natural Resources
  [2 followers]  Follow
  This is an Open Access Journal Open Access journal
   ISSN (Online) 2452-316X
   Published by Elsevier Homepage  [3177 journals]
  • Identification, characterization and expression analysis of SHORT
           INTERNODES (SHI) gene in Jatropha curcas L

    • Authors: Siwapech Sillapaprayoon; Sompid Samipak
      Pages: 376 - 382
      Abstract: Publication date: October 2017
      Source:Agriculture and Natural Resources, Volume 51, Issue 5
      Author(s): Siwapech Sillapaprayoon, Sompid Samipak
      Physic nut (Jatropha curcas) is a valuable crop whose seeds contain a high percentage of oil and can be converted to high-quality biodiesel. Physic nut can grow in tropical and subtropical areas and has minimal requirements of its environment. Physic nut starts its production 9 mth after planting and its yield peaks in 2–3 yr. The major hurdle in harvesting its seeds is the extreme height of this crop. J. curcas plants often reach 1.5–2 m after the first year and continue to grow. Plant height control had been achieved by manipulating levels of gibberellic acid (GA). One possible way to accomplish GA manipulation is through the action of the SHORT INTERNODES (SHI) gene since it has been found to repress GA responses. The current study identified the SHI gene in J. curcas. Further characterization of the expression pattern and structure of the SHI gene revealed that JcSHI is a single copy gene that encodes 315 amino acid residues and is highly expressed in the shoot meristem and root. The phylogenetic tree showed a close relationship between JcSHI and PtSHI that are both in woody plants. The JcSHI protein contained a specific RING zinc finger (C3HC3H type) and the IGGH domain indicating the possible function of SHI as a transcriptional regulator of genes involved in plant growth and elongation.

      PubDate: 2018-04-25T09:37:05Z
      DOI: 10.1016/j.anres.2018.02.002
  • Antimicrobial activity and chemical composition of Thymus species and
           Zataria multiflora essential oils

    • Authors: Mohaddese Mahboubi; Rezvan Heidarytabar; Elaheh Mahdizadeh; Hossein Hosseini
      Pages: 395 - 401
      Abstract: Publication date: October 2017
      Source:Agriculture and Natural Resources, Volume 51, Issue 5
      Author(s): Mohaddese Mahboubi, Rezvan Heidarytabar, Elaheh Mahdizadeh, Hossein Hosseini
      Thymus spp. and Zataria multiflora essential oils are known in Iran as thyme oils. The chemical composition and antimicrobial activity were compared of different thyme oils from different regions of Iran. The antimicrobial activities were evaluated using disc diffusion and micro-broth dilution assays. The chemical compositions of the essential oils were analyzed. Thymol, carvacrol, para-cymene and linalool were the main components of the thyme essential oils. The geographical region can affect the chemical composition of essential oils. Aspergillus niger and Candida albicans were the most sensitive microorganisms to thyme oils. Based on minimal inhibitory concentration and minimum lethal concentration values, respectively, the best antimicrobial thyme essential oils were T. vulgaris-SH (0.27 μL/mL, 0.41 μL/mL), T. kotschyanus-SH (0.37 μL/mL, 0.64 μL/mL) and T. pubescens-SE (0.26 μL/mL, 0.75 μL/mL). In broth media, three chemotypes of thyme essential oils showed the highest antimicrobial effects: 1) linalool, thymol and carvacrol chemotype; 2) thymol, carvacrol and para-cymene; and 3) high amounts of carvacrol and para-cymene. Identification of the role of each component in the antimicrobial effect was not possible and additional software is required to draw the matrices of these reactions.

      PubDate: 2018-04-25T09:37:05Z
      DOI: 10.1016/j.anres.2018.02.001
  • Biochar properties affecting carbon stability in soils contrasting in
           texture and mineralogy

    • Authors: Somchai Butnan; Jonathan L. Deenik; Banyong Toomsan; Patma Vityakon
      Abstract: Publication date: Available online 3 April 2018
      Source:Agriculture and Natural Resources
      Author(s): Somchai Butnan, Jonathan L. Deenik, Banyong Toomsan, Patma Vityakon
      A pot experiment involving growing three consecutive corn crops in two contrasting tropical soils—a coarse-textured, Al-rich Ultisol and a fine-textured, Mn-rich Oxisol—treated with two eucalyptus wood biochars—at low (350 °C) and high (800 °C) pyrolysis temperatures—at weight per weight rates of 0%, 1%, 2% and 4%, was conducted to assess their effects on the soil organic carbon (SOC) stability (soil C remaining relative to initial soil C) 144 d after biochar application (after the third crop harvest). The low temperature biochar had higher volatile matter but lower ash and fixed C contents than its high temperature counterpart. In the Ultisol, the SOC stability significantly increased with both biochars at up to the 2% rate but beyond which it did not further increase, whereas, in the Oxisol, the SOC stability significantly decreased at all rates of high temperature biochar and at the 2% and 4% rates of the low temperature biochar. Proposed mechanisms underlying these contrasting responses of the two soils involve their different buffering capacities and their mineralogy in relation to the Al in the Ultisol and the Mn in the Oxisol interacting with the different contents of the three main biochar constituents (volatile matter, ash and fixed C) of the two biochars.

      PubDate: 2018-04-25T09:37:05Z
      DOI: 10.1016/j.anres.2018.03.002
  • Antifungal property of chili, shallot and garlic extracts against
           pathogenic fungi, Phomopsis spp., isolated from infected leaves of para
           rubber (Hevea brasiliensis Muell. Arg.)

    • Authors: Patcharawan Sittisart; Siriporn Yossan; Poonsuk Prasertsan
      Abstract: Publication date: Available online 31 March 2018
      Source:Agriculture and Natural Resources
      Author(s): Patcharawan Sittisart, Siriporn Yossan, Poonsuk Prasertsan
      The aim of this study was to evaluate the antifungal property of extracts of chili, shallot and garlic (local varieties in Sisaket, Thailand) against pathogenic fungi, Phomopsis spp., which were isolated from infected leaves of para rubber (Hevea brasiliensis Muell. Arg.). Seven isolates of Phomopsis spp. namely Phomopsis sp. SSK1.1, SSK1.2, SSK3.1, SSK4.1, SSK5.1, SSK5.2 and SSK7.1 were identified on the basis of morphological characteristics. Fresh plants were extracted with water to obtain crude extracts and their antifungal properties were tested on potato dextrose agar (PDA) media. The study demonstrated that increasing the concentrations (20%, 40%, 60% or 80%) of the chili extract exhibited a dependent increase in the inhibitory level on mycelial growth of Phomopsis spp. SSK3.1, SSK4.1 and SSK5.2. The inhibitory level on mycelial growth of shallot extract also increased in a dose-dependent manner in all isolates of Phomopsis. The garlic extract had significant inhibition on the growth of all isolates with complete inhibition at 80% concentration. The highest levels of percentage inhibition of mycelial growth were with garlic extract followed by shallot and chili extracts, respectively. The study also showed that these plant extracts contained some polyphenols (apigenin, gallic acid, catechin, quercetin, kaempferol and tannic acid) which are well-known compounds possessing antifungal activity. Therefore, it is possible that the antifungal properties of these plant extracts were partly due to these polyphenols or unknown active compounds which could not be analyzed in this study. Collectively, these results suggest that local varieties of both shallot and garlic possess strong antifungal properties.

      PubDate: 2018-04-25T09:37:05Z
      DOI: 10.1016/j.anres.2018.03.005
  • Comparison of leaf osmotic adjustment expression in wheat (Triticum
           aestivum L.) under water deficit between the whole plant and tissue levels

    • Authors: Song Ai Nio; Daniel Peter Mantilen Ludong; Len J. Wade
      Abstract: Publication date: Available online 31 March 2018
      Source:Agriculture and Natural Resources
      Author(s): Song Ai Nio, Daniel Peter Mantilen Ludong, Len J. Wade
      This study compared osmotic adjustment (OA) expression and solutes involved in leaves of wheat with high OA capacity (cv. Hartog) under water deficit (WD) in the glasshouse (whole plant level) and laboratory (tissue level). WD was applied at the reproductive stage for the whole plant level and WD was induced at the tissue level using polyethylene glycol (PEG) 8000 as a non-permeating osmotic agent. In the whole plant Experiment, leaf OA was expressed at 16 days (0.26 MPa) and increased to 0.37 MPa at 37 days of treatment. In the tissue level experiment, exposure of leaf segments to PEG 8000 treatments of 0, −0.5, −1.0 and −1.5 MPa and sampling times of 0, 12, 24, 48 and 72 h showed that the maximum leaf OA (0.37 MPa) was expressed on PEG −0.5 MPa after 48 h of treatment. K+, glycinebetaine and proline accounted for 21, 19 and 21% of OA in the glasshouse experiment. K+ did not contribute to the OA, while Na+ and proline only accounted for 5 and 1% in the laboratory experiment. Although OA was expressed in leaf segments of wheat subjected to WD under PEG -0.5 MPa, the laboratory-based PEG method with leaf segments could not substitute for the glasshouse experiment for screening germplasm for OA capacity.

      PubDate: 2018-04-25T09:37:05Z
      DOI: 10.1016/j.anres.2018.03.003
  • Protective effect of Canna indica on cerebral ischemia-reperfusion injury
           in rats

    • Authors: Mallikarjuna Rao Talluri; Kishore Naidu Killari; N.V.S. Viswanadha Murthy Manepalli; Prasad Konduri; Kiran Kumar Bandaru
      Abstract: Publication date: Available online 31 March 2018
      Source:Agriculture and Natural Resources
      Author(s): Mallikarjuna Rao Talluri, Kishore Naidu Killari, N.V.S. Viswanadha Murthy Manepalli, Prasad Konduri, Kiran Kumar Bandaru
      The antioxidant capacity and cerebroprotective effect of Canna indica roots were estimated. The methanolic extract of C. indica roots was studied for free radical scavenging activity on superoxide, hydroxyl and 1, 1-diphenyl-2-picrylhydrazylfree radicals and compared with standard drug ascorbic acid using a pre-treatment for 1 wk at a daily oral dose, of 400 mg/kg or 800 mg/kg and then cerebral ischemia-reperfusion injury was induced by occluding bilateral common carotid arteries for 30 min, followed by 4 h reperfusion. Quercetin (20 mg/kg, by intraperitoneal injection) was used as the standard drug. At the end of the experiment, animals were sacrificed by decapitation, and the brain was removed for the estimation of various biochemical parameters—assessment of cerebral infarct size and examination of oxidative stress enzymes such as superoxide dismutase (SOD), catalase (CAT), malondialdehyde (MDA) and myeloperoxidase (MPO). Pre-treatment with methanolic extract of C. indica significantly reversed the levels of biochemical parameters and significantly reduced theedema and cerebral infarct size compared to the ischemic control group. The results indicated that C. indica ameliorates the cerebral ischemia/reperfusion injury and enhances the antioxidant defense. Further studies should involve the complete isolation of pure, biologically active compounds from the different extracts from C. indica like methanol in the present research.

      PubDate: 2018-04-25T09:37:05Z
      DOI: 10.1016/j.anres.2018.03.007
  • Impact of inulin on viability and storage stability of probiotic
           Lactobacillus plantarum TISTR 2075 in fermented rice extract

    • Authors: Wanticha Savedboworn; Sureeporn Niyomrat; Janyawan Naknovn; Kriangkrai Phattayakorn
      Abstract: Publication date: Available online 31 March 2018
      Source:Agriculture and Natural Resources
      Author(s): Wanticha Savedboworn, Sureeporn Niyomrat, Janyawan Naknovn, Kriangkrai Phattayakorn
      The influence was determined of various concentrations of inulin as a prebiotic on the growth of probiotic Lactobacillus plantarum TISTR 2075 fermented in Plai Ngahm Prachin Buri rice extract. The supplementation of 2% inulin provided the highest viable cell number of 8.90 log colony forming units/mL after fermentation at 37 °C for 24 h. The storage stability of the probiotic strain could be considered in terms of the specific rate of cell death (k value). The supplementation of 2% inulin exhibited the lowest k value of 2.48 × 10−2/d (30.16% survival) and 8.03 × 10−2/d (7.84% survival) after storage at 4 °C for 52 d and 30 °C for 31 d, respectively. The total reducing sugar and free amino nitrogen profiles of all treatments decreased over the storage period.

      PubDate: 2018-04-25T09:37:05Z
      DOI: 10.1016/j.anres.2018.03.008
  • In vitro micropropagation and allelopathic effect of lantana (Lantana
           camara L.)

    • Authors: Varaporn Veraplakorn
      Abstract: Publication date: Available online 31 March 2018
      Source:Agriculture and Natural Resources
      Author(s): Varaporn Veraplakorn
      The invasive plant, lantana (Lantana camara L.), is well known as a traditional medicinal plant and it may become important in the development of modern drugs. Lantana has long been touted as containing potent allelochemicals and in vitro-produced tissues may be appropriate sources for the production and isolation of bioactive compounds. In this research, effective techniques for shoot multiplication and root and callus induction were developed and the allelopathic efficiency of in vitro leaf and callus was examined. The optimized medium for shoot multiplication was Murashige and Skoog (MS) medium supplemented with 12.0–20.0 μM thidiazuron. For rooting, high root numbers were obtained on MS medium containing 5.0 or 10.0 μM 1-naphthalene acetic acid (NAA). In addition, the highest relative growth rate of callus was achieved when lantana leaf was cultured on NB medium (MS medium with 21.5 μM NAA and 22.5 μM N6-benzyladenine). For allelopathic effects, the results suggested high potential activity of lantana leaf and callus that was able to variably inhibit the seed germination and seedling growth of all four test species. Leaf and callus extract had no significant effect on the germination of Brassica campestris var. chinensis. Callus extract showed superior ability to suppress germination for Ipomoea aquatica Forsk. and Zea mays L. but inferior inhibition ability for Sorghum bicolor L. These results suggested that the extract of lantana in vitro leaf and callus will be an interesting natural source for further study to develop natural herbicides.

      PubDate: 2018-04-25T09:37:05Z
      DOI: 10.1016/j.anres.2018.03.006
  • Toward sustainable phosphorus management in Sri Lankan rice and
           vegetable-based cropping systems: A review

    • Authors: Dinarathna Sirisena; Lalith D.B. Suriyagoda
      Abstract: Publication date: Available online 31 March 2018
      Source:Agriculture and Natural Resources
      Author(s): Dinarathna Sirisena, Lalith D.B. Suriyagoda
      Upland soils used for vegetable cultivation and lowland soils used for rice cultivation in Sri Lanka are inherently low in phosphorus (P) availability for plants. Rice is grown twice a year while vegetables are grown in intensive rotations. Heavy doses of inorganic and organic P sources are regularly applied to vegetable cultivating systems aimed at maximizing productivity, and disregarding the relatively lower P fertilizer application rates recommended by the government Department of Agriculture. This practice has led to the development of high P concentrations in intensive, high-value vegetable cultivating systems which is threatening environmental sustenance (267 mg available P/kg of soil). For rice, only inorganic P sources are widely being applied and the excessive soil P loading is less severe than that in vegetable cultivating systems (13 mg available P/kg soil). However, rice crops grown in most of the lowlands do not show positive responses to added P fertilizers. The development of chronic diseases among the inhabitants in certain intensively rice cultivated regions in Sri Lanka is suspected to be due to the presence of high concentrations of heavy metals in P fertilizers and the accumulation of those in food chains. Despite sustainable and updated P fertilizer recommendations being available, farmers continue to apply overdoses of P, seeking higher crop yields. Therefore, coordination and active intervention of all the related institutes are required when improving the awareness of farmers on this malpractice, and ensuring the sustainability of vegetable and rice cultivating systems in Sri Lanka with respect to P nutrition.

      PubDate: 2018-04-25T09:37:05Z
      DOI: 10.1016/j.anres.2018.03.004
  • Overexpression and characterization of alkaliphilic Bacillus firmus strain
           K-1 xylanase

    • Authors: Karntichar Mongkorntanyatip; Puangpen Limsakul; Khanok Ratanakhanokchai; Pongsak Khunrae
      Abstract: Publication date: Available online 30 March 2018
      Source:Agriculture and Natural Resources
      Author(s): Karntichar Mongkorntanyatip, Puangpen Limsakul, Khanok Ratanakhanokchai, Pongsak Khunrae
      The alkaliphilic Bacillus firmus strain K-1 produces an alkaliphilic xylanase (Xyn11A) which can be stable across a wide pH range and active at high temperatures. However, the enzyme suffers from low activity when isolated directly from the culture broth using corn husk. A method was developed which employed recombinant DNA technology to produce recombinant Xyn11A (rXyn11A) in an Escherichia coli (E. coli) expression system. The thioredoxin-fused Xyn11A (Thio-rXyn11A) could be expressed as a soluble form in BL21 (DE3). The expressed protein was tobacco etch virus (TEV) cleavaged to remove the thioredoxin tag and subjected to further purification using Ni2+-NTA affinity chromatography followed by gel-filtration chromatography. Activity of rXyn11A was shown to be under the same conditions as the native enzyme isolated directly from the K-1, having a broad range of active pH (5.0–12.0), with the maximum activity obtained from pH 5.0 at 60 °C. Interestingly, the obtained rXyn11A exhibited a very large increase in specific activity (3034 U/mg), which was 84-times higher than that reported in the native enzyme when observed under the same conditions. Also seen in the xylan hydrozation assay, the rXyn11A hydrolyzed insoluble xylans around 100-times more effectively than the native enzyme. The results from this study demonstrated a successful method for generating the enzyme rXyn11A with much improved activity, making it feasible for industrial applications.

      PubDate: 2018-04-25T09:37:05Z
      DOI: 10.1016/j.anres.2018.03.011
  • Improving physical properties of degraded soil: Potential of poultry
           manure and biochar

    • Authors: Kayode Steven Are; Ayodele Olumide Adelana; IbukunOluwa Oladapo Fademi; Oluseyi Abel Aina
      Abstract: Publication date: Available online 30 March 2018
      Source:Agriculture and Natural Resources
      Author(s): Kayode Steven Are, Ayodele Olumide Adelana, IbukunOluwa Oladapo Fademi, Oluseyi Abel Aina
      The application of organic materials for soil amendment plays important roles in reclaiming and improving the physical quality (SPQ) of degraded soils. This study assessed the effects of composted and non-composted poultry manures and biochar on the SPQ indicators of a degraded soil. A randomized complete block design was applied with four replications using five treatments: 1) veticompost (composted poultry manure + vetiver grass prunes), 2) poultry tea (non-composted poultry slurry), 3) solid non-composted poultry manure, 4) poultry biochar and 5) an unamended control. The soil physical quality indicators were determined after four consecutive growing seasons, with maize (Zea mays var. DMR-ESR-Y) planted as the test crop in each season. In comparison with the other treatments, poultry biochar consistently retained 3.3–31.3% more water at lower suctions (0–500 kPa). The saturated hydraulic conductivity following the application of poultry biochar (9.2 mm/hr) was significantly lower (p < 0.05) than for other organic amendments (16.5–18.2 mm/hr). The increase in water stable aggregates under the veticompost treatment was 3.4–26.7% greater than for the other treatments. The comparison of the SPQ indices indicated positive effects from the amendments on the soil physical properties in the order: unamended control < poultry biochar < poultry tea < non-composted poultry manure < veticompost. Composted and non-composted manures and biochar favored better maize growth and resulted in significantly higher grain yields (1.48–1.73 t/ha) than the unamended control treatments (0.87 t/ha). These results suggest that composted and non-composted manures may be more worthwhile than biochar for improving the physical quality of degraded soil.

      PubDate: 2018-04-25T09:37:05Z
      DOI: 10.1016/j.anres.2018.03.009
  • Ontogenetic development of the digestive tract and ultrastructure of the
           anterior intestinal epithelia in tiger grouper Epinephelus fuscoguttatus
           (Forsskål, 1775) larvae

    • Authors: Kornrawee Aiemsomboon; Wanpen Khammee; Paiboon Bunlipatanon; Uthairat Na-Nakorn
      Abstract: Publication date: Available online 30 March 2018
      Source:Agriculture and Natural Resources
      Author(s): Kornrawee Aiemsomboon, Wanpen Khammee, Paiboon Bunlipatanon, Uthairat Na-Nakorn
      The ontogeny of the digestive tract and ultrastructure of the anterior intestine in Epinephelus fuscoguttatus (Forsskål, 1775) larvae were examined using light microscopy and transmission electron microscopy from hatching to 42 d after hatching (DAH). The first developmental stage started at hatching when the digestive tract was a simple tube. The second stage (2–3 DAH), the endo-exotrophic stage, was the time when the mouth of the tiger grouper larvae developed. The third stage (3–24 DAH) started after the depletion of the yolk-sac (3 DAH). The remarkable changes included the appearance of gastric glands at 9 DAH, eosinophilic supranuclear vacuoles appearing in the posterior intestine at 5 DAH and lipid vacuoles found in the interior intestine at 6 DAH which indicated the beginning of protein and lipid absorption. The last stage (after 24 DAH) started when the gastric glands and pyloric caeca were fully developed. The formation of the gastric glands and pyloric caeca indicated a suitable time for weaning. The ultrastructural features of epithelium cells of the anteria intestine showed large lipid droplets at the beginning of the exotrophic stage. From this time onwards, the lipid droplets became smaller, while the endoplasmic reticulum and Golgi complex were well-developed. Upon metamorphosis, the tiger grouper larvae had eosinophilic granule cells (EGCs) in the intestinal epithelia. This substantially increased immunity capability at this time. This study showed that during a critical period of larval survival, the ontogeny coincided with exogenous feeding, while the ultrastructure showed lipid metabolism, hence highlighting the importance of fatty acid in the development of the larvae.

      PubDate: 2018-04-25T09:37:05Z
      DOI: 10.1016/j.anres.2018.03.010
  • FM - TOC

    • Abstract: Publication date: October 2017
      Source:Agriculture and Natural Resources, Volume 51, Issue 5

      PubDate: 2018-04-25T09:37:05Z
  • Antimicrobial activity optimization of nisin, ascorbic acid and
           ethylenediamine tetraacetic acid disodium salt (EDTA) against Salmonella
           Enteritidis ATCC 13076 using response surface methodology

    • Authors: Nongpanga Sangcharoen; Wanwimol Klaypradit; Pongtep Wilaipun
      Abstract: Publication date: Available online 24 February 2018
      Source:Agriculture and Natural Resources
      Author(s): Nongpanga Sangcharoen, Wanwimol Klaypradit, Pongtep Wilaipun
      Nisin is a commercial bacteriocin produced by Lactococcus lactis subsp. lactis and widely used as a natural preservative in the food industry. However, while nisin alone cannot inhibit the growth of Gram-negative bacteria, it can in combination with a chelating agent or organic acid. This study combined nisin with some chelating agents, weak organic acids and their salts to inhibit Salmonella Enteritidis ATCC 13076. The combinations of nisin (2,000 parts per million; ppm) and ascorbic acid (2,000 ppm) or ethylenediamine tetraacetic acid disodium salt (EDTA; 7,400 ppm) showed significant inhibitory effects on the target strain. Due to regulatory limits, the second part of the study reduced the concentrations of nisin, ascorbic acid and EDTA to 500 ppm, 2,000 ppm and 250 ppm, respectively. The mixture of nisin, ascorbic acid and EDTA showed the highest inhibitory effect with a reduction number of 3.41 log colony forming units (p < 0.05). To minimize the growth of S. Enteritidis ATCC 13076, central composite design and response surface methodology were applied to investigate the combined effect of nisin (0–500 ppm), ascorbic acid (0–2,000 ppm), and EDTA (0–250 ppm) on the target strain growth. Among the three factors, nisin had a higher antimicrobial effect than ascorbic acid or EDTA, while an increase in nisin resulted in a decrease in S. Enteritidis ATCC 13076 growth. The optimum concentration was 500 ppm nisin with 1,515 ppm ascorbic acid and 250 ppm EDTA. Under these conditions, the growth of S. Enteritidis ATCC 13076 predicted by the model was 24.99%.

      PubDate: 2018-02-26T18:52:17Z
      DOI: 10.1016/j.anres.2017.12.005
  • Buttressing impact on diameter estimation in plantation teak (Tectona
           grandis L.f.) sample trees in northern Thailand

    • Authors: Andrew J. Warner; Monton Jamroenprucksa; Ladawan Puangchit
      Abstract: Publication date: Available online 24 February 2018
      Source:Agriculture and Natural Resources
      Author(s): Andrew J. Warner, Monton Jamroenprucksa, Ladawan Puangchit
      Buttressing consists of ground-upward deformations from the circular cross section of a tree and can be quite pronounced in tropical species, thus making the measurement of lower diameters in older trees especially problematical in collecting accurate sample tree data. A technique to correct for buttress distortion of diameter estimates from girth tape measurement was applied using photographic images of cross sections at known lower bole heights on 331 plantation teak sample trees in eight plantations over four provinces in northern Thailand. Image scaling and image correction for distortion were used to obtain an equivalent diameter based on the actual digitized sectional area and standard geometry. The estimates of diameters over buttressing exceeded equivalent sectional area diameter estimates by more than a nominated 3% difference for at least one measuring height in the lower bole on 73% of the trees measured. The results of the t test analysis indicated that the two sets of diameters were highly significantly (p < 0.001) different with the data measured using the girth tape overestimating the actual buttressed sectional area based on the sectional analysis. The study indicated that pronounced buttressing is common, especially in the lower bole of plantation teak trees and correction is essential where such sample tree measurements are to be used in taper modeling to avoid introducing a potentially large overestimation bias into the model.

      PubDate: 2018-02-26T18:52:17Z
      DOI: 10.1016/j.anres.2018.01.001
  • Effect of temperature and shape on drying performance of cassava chips

    • Authors: Pechaporn Pornpraipech; Morakot Khusakul; Raksuda Singklin; Prysathryd Sarabhorn; Chinnathan Areeprasert
      Abstract: Publication date: Available online 24 February 2018
      Source:Agriculture and Natural Resources
      Author(s): Pechaporn Pornpraipech, Morakot Khusakul, Raksuda Singklin, Prysathryd Sarabhorn, Chinnathan Areeprasert
      The drying behavior of cassava chips was investigated using two cutting shapes—rectangular and circular—with evaluation under different air temperatures of 60°C, 80°C, 100°C and 120°C. The results showed that the rectangular chips with a drying air temperature of 100°C was optimal because they had a soft, white color desirable for cassava flour manufacture and required less drying time compared to the circular chips Four classical drying models—Approximation of Diffusion, Henderson and Pabis, Page, and Verma—were fitted to experimental data and evaluated by comparing the coefficient of determination, reduced chi-square and root mean square error between the experimental and predicted values. The Page model was able to satisfactorily describe the drying behavior of cassava chips.

      PubDate: 2018-02-26T18:52:17Z
      DOI: 10.1016/j.anres.2017.12.004
  • Snail as Mini-Livestock: Nutritional Potential of Farmed Pomacea
           canaliculata (Ampullariidae)

    • Authors: Sampat Ghosh; Chuleui Jung; Victor Benno Meyer-Rochow
      Abstract: Publication date: Available online 24 February 2018
      Source:Agriculture and Natural Resources
      Author(s): Sampat Ghosh, Chuleui Jung, Victor Benno Meyer-Rochow
      Amino acids, fatty acids and minerals were investigated in the farmed freshwater snail Pomacea canaliculata (Ampullariidae) to understand its nutritional potential as alternative livestock. Snail samples with removed gut content were collected from a local snail farm in the Republic of Korea. Almost all the essential amino acids present in the snail protein satisfied the recommended level for an ideal protein pattern, while methionine was present at a marginal level. The proportion of unsaturated fatty acids (60.5%) was higher than that of saturated fatty acids (39.5%). The ratio of polyunsaturated to monounsaturated fatty acids was 1.08, underscoring the high nutritional quality of the fat content of the species. The most abundant mineral was calcium. The high K/Na ratio (3.9) and the presence of substantial amounts of phosphorus, iron and zinc makes P. canaliculata snail meat potentially valuable. Thus, the utilization of under-appreciated nutritious food resources could be helpful in mitigating food security problems and in solving nutritional shortcomings in underprivileged parts of the world.

      PubDate: 2018-02-26T18:52:17Z
      DOI: 10.1016/j.anres.2017.12.007
  • Evaluation of dilute acid pretreatment for bioethanol fermentation from
           sugarcane bagasse pith

    • Authors: Nipat Sritrakul; Sunee Nitisinprasert; Suttipun Keawsompong
      Abstract: Publication date: Available online 23 February 2018
      Source:Agriculture and Natural Resources
      Author(s): Nipat Sritrakul, Sunee Nitisinprasert, Suttipun Keawsompong
      Sugarcane bagasse pith is the most abundant agricultural waste in Thailand and an attractive raw material for biosugar production using dilute acid pretreatment and enzymatic hydrolysis. In this study, the raw material was pretreated at 121oC with different sulfuric acid concentrations (0%, 1%, 2%, 3% or 4% volume per volume, v/v) and pretreatment times (30, 60 or 90 min). The pretreated solid was hydrolyzed using a commercial enzyme (Celluclast® 1.5L). The maximum total sugars yield (53.7 g/100 g dry bagasse pith) was achieved at 1–2% v/v H2SO4 for 90 min, representing 67% of total sugars in the bagasse pith. For ethanol production, simultaneous saccharification and fermentation (SSF) and separate hydrolysis and fermentation (SHF) processes were employed using Pichia stipitis JCM 10742. The results indicated that both the ethanol concentration and productivity using SSF were higher than from the SHF process. The ethanol concentration and productivity using SSF were 3.70 g/L and 0.15 g/L/hr in 24 hr fermentation, respectively, while for the SHF process the results were 2.58 g/L and 0.09 g/L/hr in 30 hr fermentation, respectively.

      PubDate: 2018-02-26T18:52:17Z
      DOI: 10.1016/j.anres.2017.12.006
  • Image analysis based on color, shape and texture for rice seed
           (Oryza sativa L.) germination evaluation

    • Authors: Benjamaporn Lurstwut; Chomtip Pornpanomchai
      Abstract: Publication date: Available online 27 December 2017
      Source:Agriculture and Natural Resources
      Author(s): Benjamaporn Lurstwut, Chomtip Pornpanomchai
      Computer software—the Rice Seed Germination Evaluation System (RSGES)—was developed which can evaluate a rice seed image for germination prediction by using digital image processing and an artificial neural networks technique. The digital images are taken with a normal digital camera or mobile phone camera, which is very easy for farmers to process. RSGES consists of six main processing modules: 1) image acquisition, 2) image preprocessing, 3) feature extraction, 4) germination evaluation, 5) results presentation and 6) germination verification. The experiment was conducted on seed of the Thai rice species CP-111 in Bangkok and Chiang Mai, Thailand. RSGES extracted 18 features: 3 color features, 7 morphological features and 8 textural features. The system applied artificial neural network techniques to perform germination prediction. The system precision rate was 7.66% false accepted and 5.42% false rejected, with a processing speed of 8.31 s per image.

      PubDate: 2018-02-26T18:52:17Z
      DOI: 10.1016/j.anres.2017.12.002
  • Enhancement of antioxidant activity of C-phycocyanin of Spirulina powder
           treated with supercritical fluid carbon dioxide

    • Authors: Monchai Dejsungkranont; Ho-Hsien Chen; Sarote Sirisansaneeyakul
      Abstract: Publication date: Available online 27 December 2017
      Source:Agriculture and Natural Resources
      Author(s): Monchai Dejsungkranont, Ho-Hsien Chen, Sarote Sirisansaneeyakul
      The functionality and activity of proteins can be modified by supercritical fluid CO2 (SCFCO2). The objectives of this study were to investigate the possibility of enhanced antioxidant activity of C-phycocyanin (C-PC) proteins from light-harvested Spirulina maxima powder using the SCFCO2 pretreatment and to optimize the SCFCO2 pretreatment conditions enhancing the antioxidant activity of C-PC. The Taguchi method was used to determine the optimum conditions for the SCFCO2 pretreatment. The experimental factors were the pretreatment temperature, pressure, pretreatment mode (static, dynamic and conjugated) and duration. The optimal conditions of SCFCO2 pretreatment were: 60 °C, 24.13 MPa and 60 min in static batch mode. Using these pretreatment conditions, the maximum antioxidant activity of C-PC from the treated residual biomass was 410.1 μmole trolox/mg, which was 1.7-fold higher than the untreated biomass (control). The factor that most affected the antioxidant activity of C-PC was temperature (59%). A high pretreatment temperature could damage C-PC, but promoted antioxidant activity. Of note is that this work was the first to explore SCFCO2 treatment enhancing the antioxidant activity of C-PC in Spirulina sp. powder.

      PubDate: 2018-02-26T18:52:17Z
      DOI: 10.1016/j.anres.2017.12.001
  • Effects of fish silage on growth and biochemical characteristics of fresh
           water microalga Scenedesmus sp. MB 23

    • Authors: Jasmin Kaippilliparambil Abdulsamad; Saramma Aikkarakunnath Varghese
      Pages: 235 - 242
      Abstract: Publication date: August 2017
      Source:Agriculture and Natural Resources, Volume 51, Issue 4
      Author(s): Jasmin Kaippilliparambil Abdulsamad, Saramma Aikkarakunnath Varghese
      Scenedesmus sp. MB 23 was cultivated in fish silage to study the effects of different concentrations on the growth and biochemical characteristics, particularly the protein, carbohydrate and lipid properties. Fish silage with 12% concentration was most effective for the growth and biomass production of Scenedesmus sp. The microalga reached maximum cell density (2433.89 × 104 cells/mL), chlorophyll-a concentration (2.766 μg/mL), specific growth rate (0.48/d) and biomass (2.73 g/L) on this medium. In mass culture, enhanced production of protein (123.87 mg/g dry weight of alga), carbohydrate (44.904 mg/g dry weight of alga) and lipid (84.21 mg/g dry weight of alga) was found using 9% fish silage. The effective reduction (up to 90%) in the concentrations of nitrate, phosphorus and ammonia in the final fish silage medium proved the removal efficiency of Scenedesmus sp. The enhanced production of Scenedesmus sp. MB 23 indicated that effective bioremediation of fish waste can be conducted using algal mass production in fish silage. The study also proved that microalgae grown in fish silage have great industrial potential and can be used as a source of feed and biofuel.

      PubDate: 2017-12-27T06:04:33Z
      DOI: 10.1016/j.anres.2017.10.002
  • Papaya carotenoids increased in Oxisols soils

    • Authors: Kamonwan Sangsoy; Orarat Mongkolporn; Wachiraya Imsabai; Kietsuda Luengwilai
      Pages: 253 - 261
      Abstract: Publication date: August 2017
      Source:Agriculture and Natural Resources, Volume 51, Issue 4
      Author(s): Kamonwan Sangsoy, Orarat Mongkolporn, Wachiraya Imsabai, Kietsuda Luengwilai
      The papaya fruit is healthy for humans as it contains high levels of antioxidants and provitamin A due to high lycopene and β-carotenes contents, respectively. The carotenoids were determined from papayas grown in three different locations—Kamphaeng Saen (KS), Sisaket (SK), and Tha Mai (TM)—and also the study investigated whether the Oxisols soil was capable of increasing the carotenoids content in the papaya fruit. The lycopene, β-carotene and β-cryptoxanthin contents were determined from four different ripening stages (mature green to fully ripe). Concomitantly, the transcript levels of five genes involved in carotenoids biosynthesis—phytoene desaturase (PDS), carotene desaturase (ZDS), lycopene-β-cyclase (LCY-B1 and LCY-B2), and β-carotene hydroxylase (B-CHX)—were investigated. Papayas grown at TM had the highest lycopene, which was supported by the high expression levels of PDS, ZDS and B-CHX and the lower expression levels of the two LCY-B genes; however the locations did not affect the fruit quality. The ‘Plak Mai Lai’ papaya was further investigated by being grown in one location but on two different soil types (Oxisols and Ultisols), to compare their carotenoids contents. Higher carotenoid contents were detected in the papaya grown in the Oxisols.

      PubDate: 2017-12-27T06:04:33Z
      DOI: 10.1016/j.anres.2017.10.003
  • Influence of heavy metals on rhizosphere microbial communities of Siam
           weed (Chromolaena odorata (L.)) using a 16S rRNA gene amplicon sequencing

    • Authors: Thanyaporn Ruangdech; Manoosak Wongphatcharachai; Christopher Staley; Michael J. Sadowsky; Kannika Sajjaphan
      Pages: 137 - 141
      Abstract: Publication date: June 2017
      Source:Agriculture and Natural Resources, Volume 51, Issue 3
      Author(s): Thanyaporn Ruangdech, Manoosak Wongphatcharachai, Christopher Staley, Michael J. Sadowsky, Kannika Sajjaphan
      A 16S rRNA amplicon sequencing approach was used to assess the impacts of cadmium (Cd) and zinc (Zn) contamination on populations of rhizobacteria on Siam weed (Chromolaena odorata (L.)). Bacterial communities were characterized using the Illumina MiSeq platform and the V6 hypervariable region of the 16S rRNA gene. Among the 54,026 unique operational taxonomic units (OTUs) identified, 99.7% were classified as bacteria and the rest were classified as archaea. Several dominant bacterial phyla were observed in all samples—Proteobacteria, Actinobacteria, Acidobacteria, Firmicutes and Bacteroidetes. These five phyla accounted for 89.2% of all OTUs identified among all sites, and only two OTUs could not be classified to a phylum. Comparison among samples containing low and high levels of Cd contamination using nonparametric Shannon and Shannon diversity indices showed that soils with low levels of diversity had a higher level of Cd (p < 0.05). These results indicated that levels of Cd may significantly alter bacterial species selection. The Cd- and Zn-resistant bacteria from each sample were subjected to heavy-metal minimum inhibitory concentration (MIC) analyses. The MIC values obtained from 1152 isolates were used to individually analyze the pattern of gene function using the BioNumerics software. The results of this analysis showed that 26.7% of the bacteria were resistant to Cd concentrations up to 320 mg/L and only 2.3% of bacteria were resistant to Zn at concentrations up to 3200 mg/L. The MIC analyses indicated that the number of resistant bacteria decreased with increasing metal concentrations and those bacteria resistant to Cd and Zn may contain more than one group of metal-resistance genes.

      PubDate: 2017-09-04T00:07:10Z
      DOI: 10.1016/j.anres.2016.05.005
  • Searching for and analysis of bacterial blight resistance genes from
           Thailand rice germplasm

    • Authors: Siriporn Sombunjitt; Tanee Sriwongchai; Chatuporn Kuleung; Vipa Hongtrakul
      Abstract: Publication date: Available online 8 December 2017
      Source:Agriculture and Natural Resources
      Author(s): Siriporn Sombunjitt, Tanee Sriwongchai, Chatuporn Kuleung, Vipa Hongtrakul
      In Thailand, rice (Oryza sativa L.) is the main food and agricultural product for export. However, the production of rice has faced many problems and bacterial blight disease is one of the problems in rice growing. Bacterial blight resistance Xa4, Xa7, xa5 and xa13 genes were discovered in 155 Thai rice cultivars using polymerase chain reaction-based gene-linked and gene-specific markers and the specific allele was compared with susceptible rice cultivars and with rice carrying each resistance gene. The results showed the same alleles as in the Xa4 resistance gene (89.68%), followed by the Xa7 resistance gene (11.61%), while the same alleles as xa5 and xa13 resistance genes were not found in the Thai rice germplasm studied. A new allele of Xa7 was found and part of the DNA sequence was analyzed and compared to alleles obtained from resistant and susceptible rice lines. Sixteen cultivars carried the same alleles as the Xa4 and Xa7 resistant alleles. Phenotyping of 12 rice cultivars was performed using the leaf-clipping method and inoculation with three isolates of Xoo (TB0002, Xoo5 and Xoo6). Three rice cultivars (Kan Phu Daeng, Phuyai Li and RD23) had resistance to all three Xoo isolates. These cultivars will be useful as genetic sources in rice breeding programs in the future.

      PubDate: 2017-12-27T06:04:33Z
      DOI: 10.1016/j.anres.2017.11.001
  • Regeneration and self-thinning processes in a restored Rhizophora
           apiculata plantation in southern Thailand

    • Authors: Aor Pranchai
      Abstract: Publication date: Available online 8 December 2017
      Source:Agriculture and Natural Resources
      Author(s): Aor Pranchai
      Degraded mangrove sites, such as abandoned shrimp ponds, are usually restored through the establishment of even-aged Rhizophora apiculata stands with an initial spacing of 1.5 m × 1.5 m. It has been observed that under good site conditions, densely planted R. apiculata trees compete from an early age onward. However, it is unknown whether early competition and self-thinning occur in recently restored mangrove plantations. The study was conducted in a 16-year-old R. apiculata stand established on an abandoned shrimp pond in Nakhon Si Thammarat province, southern Thailand. All trees were stem-mapped and their basal area was determined. Point process modeling was used to simulate the impact of self-thinning and regeneration processes on the spatial distribution of trees. Spatial statistics were applied to assess the goodness-of-fit of the simulated tree distribution compared to the observed distribution. Tree density declined from initially 4444 trees/ha to 3566 trees/ha, while the distribution of tree stems became more regular. The simulations indicated that 50% of all planted R. apiculata trees died due to self-thinning and 38% of all mapped trees regenerated naturally in close proximity to their mother tree. Moreover, planted trees tended to have a smaller basal area. The results suggest that the density of planted R. apiculata seedlings could be lowered in order to reduce the costs of mangrove restoration, as a large number of seedlings is lost due to density-dependent mortality.

      PubDate: 2017-12-27T06:04:33Z
      DOI: 10.1016/j.anres.2017.11.004
  • Pattern and shape effects of orchid flower traps on attractiveness of
           Thrips palmi (Thysanoptera: Thripidae) in an orchid farm

    • Authors: Jirawadee Pinkesorn; John R. Milne; Sangvorn Kitthawee
      Abstract: Publication date: Available online 8 December 2017
      Source:Agriculture and Natural Resources
      Author(s): Jirawadee Pinkesorn, John R. Milne, Sangvorn Kitthawee
      Thrips palmi Karny is widely distributed and causes damage to orchid flowers. Orchid varieties in the genera Dendrobium and Mokara are different in shape. This study determined if different trap patterns which reflect flower shape may affect the attractiveness to thrips. The shapes of Dendrobium and Mokara orchid flowers were characterized and the numbers of flowers per raceme were counted in inflorescences in order to design realistic trap patterns. Four patterns (A, B, C and D) of flower traps were made by increasing the petal area. The mean number of T. palmi in flower pattern A was significantly lower than for flower patterns B, C and D (p < 0.05). The numbers of T. palmi in flower traps increased with flower petal area (r = 0.63, p < 0.05), but decreased with increasing length of flower contour (r = −0.56, p < 0.05). Six patterns (B1, B2, B3, B4, B5 and B6) of inflorescence traps were created by increasing the number of flowers per raceme. The numbers of T. palmi increased with increased numbers of flowers per raceme, pattern area and length of contour (r = 0.74, p < 0.05). Thus, inflorescence patterns and sizes affected the numbers of T. palmi attracted. The results of this research indicated that not only the patterns but also the sizes of traps were important factors for attractiveness to thrips. This information may be useful in designing and monitoring control programs for T. palmi.

      PubDate: 2017-12-27T06:04:33Z
      DOI: 10.1016/j.anres.2017.11.006
  • Genotoxicity monitoring of industrial wastes using plant bioassays and
           management through vermitechnology: A review

    • Authors: Sartaj Ahmad Bhat; Jaswinder Singh; Keshav Singh; Adarsh Pal Vig
      Abstract: Publication date: Available online 8 December 2017
      Source:Agriculture and Natural Resources
      Author(s): Sartaj Ahmad Bhat, Jaswinder Singh, Keshav Singh, Adarsh Pal Vig
      The main objective of this review was to summarize and present a comprehensive account of the cytotoxic, genotoxic and mutagenic potential of various industrial wastes/sludges using some well-known plant bioassays followed by their bioremediation using vermitechnology. Industries are the main origin of discharges of various types of chemical wastes and are the main causes of environmental degradation. The direct application of industrial sludges could also harm the local biota. The genotoxicity of industrial sludges is assessed using various plant bioassays (for example Allium cepa, Vicia faba) and these bioassays are comparatively more sensitive and cost-effective compared to other in-vitro genotoxicity bioassays. In addition, the materials used for toxicity evaluation are easily available and are being routinely used for the monitoring of environmental pollution. In most studies, the increases in root length and mitotic index, as well as the decrease in chromosomal aberrations in post vermicomposted sludges/wastes indicate that earthworms have the ability to reduce the ecotoxicogenetic effects of sludges/wastes. Post vermicompost is considered an excellent material of a homogenous nature as it has reduced levels of contaminants and holds more nutrients over a longer time without affecting the environment. The biotransformation potential of earthworms and their ability to detoxify most of the heavy metals in industrial sludges is because of their strong metabolic system and the involvement of diverse intestinal microflora and chloragocytic cells that reduce toxic forms to nontoxic forms. This unique ability of earthworms confirms the effectiveness of vermitechnology in reducing the toxicity of industrial wastes.

      PubDate: 2017-12-27T06:04:33Z
      DOI: 10.1016/j.anres.2017.11.002
  • Effect of dietary supplementation of binahong leaf meal, betel nut meal or
           their combination on serum albumin and globulin, fecal endoparasites and
           bacterial counts in milk of Saanen goats suffering from subclinical

    • Authors: Endang Kusumanti; Sugiharto Sugiharto
      Abstract: Publication date: Available online 8 December 2017
      Source:Agriculture and Natural Resources
      Author(s): Endang Kusumanti, Sugiharto Sugiharto
      The effect was investigated of dietary supplementation of binahong (Anredera cordifolia (Ten.) Steenis) leaf meal, betel nut (Arecha catechu L.) meal or their combination on serum albumin and globulin, fecal endoparasites and bacterial counts in the milk of Saanen goats suffering from subclinical mastitis. The goats were randomly allotted to one of four experimental groups: control diet (diet without binahong leaf meal or betel nut meal; CON), diet supplemented with binahong leaf meal (1 g/kg body weight; BNH), diet supplemented with betel nut meal (1 g/kg body weight; BTN) and diet supplemented with a combination of binahong leaf meal and betel nut meal (both 0.5 g/kg body weight; BNH + BTN). After 14 d treatment, the pH was higher (p < 0.05) in the milk of the CON group compared to the treated groups. The numbers of udders positive for subclinical mastitis were reduced (p < 0.05) following the treatments with BNH, BTN or BNH + BTN. Total viable bacteria were higher (p < 0.05) in the milk of the CON group than in the treated groups. The numbers of oocytes and coccidial oocysts were higher (p < 0.05) in the feces of the CON group than those in the treated groups. There were no differences (p > 0.05) in levels of serum albumin and globulin and milk production across the treatment diets. In conclusion, dietary supplementation of binahong leaf meal, betel nut meal and a combination of both showed potential to reduce the load of endoparasites in the gastrointestinal tract and to reduce subclinical mastitis in lactating Saanen goats.

      PubDate: 2017-12-27T06:04:33Z
      DOI: 10.1016/j.anres.2017.11.005
  • Breeding ecology of buff-breasted babbler (Pellorneum tickelli) at Doi
           Chiang Dao Wildlife Research Station, Chiang Mai province, Thailand

    • Authors: Patchareeyaporn Panyaarj; Prasit Wangpakapattanawong; Narit Sitasuwan; Sawat Sanitjan
      Abstract: Publication date: Available online 8 December 2017
      Source:Agriculture and Natural Resources
      Author(s): Patchareeyaporn Panyaarj, Prasit Wangpakapattanawong, Narit Sitasuwan, Sawat Sanitjan
      The behavior of the buff-breasted babbler (Pellorneum tickelli) was recorded from April 2010 to May 2012 along creeks in Doi Chiang Dao Wildlife Research Station, Chiang Mai, Thailand. Fifteen nests of the buff-breasted babbler were found on four creeks: Maeka, Maemard, Ong and Sikrobkrua. The general behavior of birds included foraging, excretion, locomotion, preening and vigilance. The complete breeding cycle of the buff-breasted babbler in this study was almost 1 mth. Egg clutch size was in the range 3–4 and the nestlings hatched almost simultaneously. The eggs were incubated by both the males and the females. After hatching, both parents invested in intensive parental care. As well as providing food, they also protected their nestlings. This information can be used to help with conservation planning in the area and elsewhere.

      PubDate: 2017-12-27T06:04:33Z
      DOI: 10.1016/j.anres.2017.10.004
  • Initial contents of residue quality parameters predict effects of larger
           soil fauna on decomposition of contrasting quality residues

    • Authors: Ratikorn Sanghaw; Chuleemas Boonthai Iwai; Chutinan Choosai; Patma Vityakon
      Abstract: Publication date: Available online 8 December 2017
      Source:Agriculture and Natural Resources
      Author(s): Ratikorn Sanghaw, Chuleemas Boonthai Iwai, Chutinan Choosai, Patma Vityakon
      A 52-week decomposition study employing the soil larger fauna exclusion technique through litter bags of two mesh sizes (20 and 0.135 mm) was conducted in a long-term (18 yr) field experiment. Organic residues of contrasting quality of N, lignin (L), polyphenols (PP) and cellulose (CL) all in grams per kilogram: rice straw (RS: 4.5N, 22.2L, 3.9PP, 449CL), groundnut stover (GN: 21.2N, 71.4L, 8.1PP, 361CL), dipterocarp leaf litter (DP: 5.1N, 303L, 68.9PP, 271CL) and tamarind leaf litter (TM: 11.6N, 190L, 27.7PP, 212CL) were applied to soil annually to assess and predict soil larger fauna effects (LFE) on decomposition based on the initial contents of the residue chemical constituents. Mass losses in all residues were not different under soil fauna inclusion and exclusion treatments during the early stage (up to week 4 after residue incorporation) but became significantly higher under the inclusion than the exclusion treatments during the later stage (week 8 onwards). LFE were highest (2−51%) under the resistant DP at most decomposition stages. During the early stage (weeks 1−4), both the initial contents of labile (N and CL) and recalcitrant C, and recalcitrant C interaction with labile constituents of residues showed significant correlations (r = 0.64−0.90) with effects on LFE. In the middle stage (week 16), LFE under resistant DP and TM had significant positive correlations with L, L+PP and L/CL. They were also affected by these quality parameters as shown by the multiple regression analysis. In the later stages (weeks 26−52), the L/CL ratio was the most prominent quality parameter affecting LFE.

      PubDate: 2017-12-27T06:04:33Z
      DOI: 10.1016/j.anres.2017.11.003
  • FM - TOC

    • Abstract: Publication date: August 2017
      Source:Agriculture and Natural Resources, Volume 51, Issue 4

      PubDate: 2017-12-27T06:04:33Z
  • Effect of moringa (Moringa oleifera) leaf supplementation on growth
           performance and feed utilization of Bocourti's catfish (Pangasius

    • Authors: Kittisak Puycha; Bundit Yuangsoi; Siripavee Charoenwattanasak; Sutee Wongmaneeprateep; Pornthep Niamphithak; Pattama Wiriyapattanasub
      Abstract: Publication date: Available online 7 November 2017
      Source:Agriculture and Natural Resources
      Author(s): Kittisak Puycha, Bundit Yuangsoi, Siripavee Charoenwattanasak, Sutee Wongmaneeprateep, Pornthep Niamphithak, Pattama Wiriyapattanasub
      The optimal level of dietary moringa leaf was determined on the growth performance, feed utilization, digestibility and serum biochemistry of Bocourti's catfish with mean wet weights of 3.72 ± 0.06 g per fish. Fish were fed with diets containing isonitrogenouse (350 g/kg crude protein) and isoenergetic (3000 kcal/kg) supplemented with dietary moringa leaf at 0 g/kg fish, 100 g/kg fish, 150 g/kg fish and 200 g/kg fish for 60 d. Fish were hand fed to apparent satiation twice a day. At the end of the experiment, a significant (p < 0.05) reduction in the growth performance was found as the moringa leaf inclusion increased in the diets, along with slightly poorer growth performance and feed utilization. Fish fed the diet containing moringa leaf at 100 g/kg demonstrated better growth than at the other inclusion levels, but it was not significantly different from the control group. The digestibility coefficient and protein digestibility were lower in fish fed with a higher inclusion of moringa leaf in the diets (p < 0.05). Pepsin digestibility and serum biochemical parameters were not different among all treatments (p > 0.05). The study indicated that dietary moringa leaf could be included in the Bocourti's catfish diet at possibly not over 100 g/kg fish without a negative effect on the growth, feed utilization, digestibility and serum biochemistry.

      PubDate: 2017-11-10T16:22:00Z
      DOI: 10.1016/j.anres.2017.10.001
  • Growth of teak regenerated by coppice and stump planting in Mae Moh
           plantation, Lampang province, Thailand

    • Authors: Anatta Auykim; Khwanchai Duangsathaporn; Patsi Prasomsin
      Abstract: Publication date: Available online 24 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Anatta Auykim, Khwanchai Duangsathaporn, Patsi Prasomsin
      The current annual increment (CAIdbh) and the mean annual increment (MAIdbh) both for the diameter at breast height (1.3 m) were investigated to compare the differences between coppice and stump-planted teak in Mae Moh Plantation. Forty-eight sample cores were collected from a 9 yr-old teak plantation using an increment borer; annual increments were analyzed using dendrochronological techniques. The results indicated that there was no significant (p > 0.05) difference in the average diameter at breast height (DBH) between the coppice and stump-planted teak, whereas the total height of stump planting was significantly greater than that of coppice teak. The CAIdbh of coppice teak was in the range 0.316–2.371 cm and continuously decreased throughout the 9 yr period. The CAIdbh of stump planting was in the range 0.162–1.982 cm and continuously increased from the beginning of growth for 5 yr followed by a decline thereafter for 4 yr. The CAIdbh of coppice showed rapid growth in the years 1–4 and was greater than for the stump-planted teak even in years 5–8 after planting; however, the growth of the stump-planted teak in the ninth year was higher than for the coppice. The MAIdbh values of coppice and stump-planted teak were not significantly (p > 0.05) different. The results showed that CAIdbh at age 5 yr can be used as a silvicultural guide to increase the yield of teak coppice.

      PubDate: 2017-10-26T15:08:26Z
      DOI: 10.1016/j.anres.2016.12.009
  • Dragon Fruit Peel Pectin: Microwave-Assisted Extraction and Fuzzy

    • Authors: Nudthapong Tongkham; Boonyawee Juntasalay; Patareeya Lasunon; Nipaporn Sengkhamparn
      Abstract: Publication date: Available online 19 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Nudthapong Tongkham, Boonyawee Juntasalay, Patareeya Lasunon, Nipaporn Sengkhamparn
      Dragon fruit peels were used as a material for pectin extraction. Microwave-assisted extraction (MAE) using powers of 300, 450 or 600 W and heating times of 5 or 10 min were investigated. Compared to the conventional method, the MAE method produced a higher yield of pectin, with the highest pectin yield (23.11%) being obtained using a microwave power of 600 W and a heating time of 10 min. However, during the MAE extraction, the degradation of pectin may have occurred which resulted in a drop in viscosity. The fuzzy assessment method (FAM) was applied to determine suitable conditions for MAE. The highest overall performance index obtained from FAM indicated that a microwave power of 450 W and an extraction time of 5 min were suitable conditions to produce a high pectin quantity with less degradation. Moreover, the anhydrouronic acid content, degree of esterification and the Fourier-transform infrared spectrum of MAE pectin did not differ from the conventional pectin and therefore, the extract could be categorized as a high methoxyl pectin.

      PubDate: 2017-10-26T15:08:26Z
      DOI: 10.1016/j.anres.2017.04.004
  • Casing layer and effect of primordia induction in the production of
           Agaricus subrufescens mushroom

    • Authors: Emerson Tokuda Martos; Diego Cunha Zied; Pedro Paulo Gadoni Junqueira; Danny Lee Rinker; Romildo Da Silva; Rômulo César Clemente Toledo; Eustáquio Souza Dias
      Abstract: Publication date: Available online 16 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Emerson Tokuda Martos, Diego Cunha Zied, Pedro Paulo Gadoni Junqueira, Danny Lee Rinker, Romildo Da Silva, Rômulo César Clemente Toledo, Eustáquio Souza Dias
      Agaricus subrufescens growers have faced difficulties in standardizing and maintaining optimal production yield, even when they produce or acquire quality substrate, as cultivation success is also related to the quality of the casing layer and the production environment. The production of A. subrufescens was evaluated using different casing layers and methods for primordia induction. Three experiments were carried out: 1) to evaluate the effect of dolomitic limestone in the casing layer; 2) to evaluate the effect of different combinations of mineral and organic materials used as the casing layer; and 3) to evaluate the effect of temperature in primordia induction with two commercial strains. The results demonstrated that an increase in the limestone concentration in the casing resulted in a superior yield (16.7%). Casing layer combinations using coconut fiber + sand (proportion 1:1, volume to volume) resulted in a greater yield (19.2%). Temperature did not affect primordia induction.

      PubDate: 2017-10-19T12:18:37Z
      DOI: 10.1016/j.anres.2017.04.003
  • Cultivation of Harpacticoid Copepods (Families Harpacticidae and
           Laophontidae) Under Selected Environmental Conditions

    • Authors: Porntep Punnarak; Padermsak Jarayabhand; Ajcharaporn Piumsomboon
      Abstract: Publication date: Available online 16 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Porntep Punnarak, Padermsak Jarayabhand, Ajcharaporn Piumsomboon
      The objective of this study was to find the optimal conditions for harpacticoid copepod cultivation at the laboratory scale. Harpacticoid copepods were collected from the macroalgae, Padina sp. and Amphiroa sp., and used to study the effects on their survival rates of temperature, salinity, diet, substratum and initial density. Mixed cultures of the dominant harpacticoid copepods (Families Harpacticidae and Laophontidae), were used for subsequent experiments. After 7 d, copepods reared at 30°C showed the highest mean (±SE) survival rate (46.67 ± 5.85%; p < 0.05), followed by the copepods cultivated at 25°C and 35°C, respectively. Harpacticoid copepods could survive in brackish water to hyper-saline water, between 10 practical salinity units (psu) and 40 psu, but not in freshwater (p < 0.05). In addition, they also showed favorable results with salinity at 27 psu and 30 psu with mean survival rates of 44.72 ± 6.35% and 42.78 ± 4.94%, respectively, which were higher than the mean survival rate of 26.67 ± 13.33% recorded in salinity at 10 psu (p < 0.05). The feeding experiment was inconclusive since there were no significant differences between the survival rates of copepods on the different algal diets. On the other hand, copepods fed with commercial shrimp feed had the mean lowest survival rate (p < 0.05). No significant differences among the different sediment types were observed. However, harpacticoid copepods showed a preference for smaller-sized particles as higher survival rates were obtained for copepods reared in sand-silt sediment rather than in fine sand, coarse sand, vermiculite (artificial sediment) and no substrate. Culture at low densities such as 100 individuals/L and 500 individuals/L is suggested for initial cultivation based on this experiment.

      PubDate: 2017-10-19T12:18:37Z
      DOI: 10.1016/j.anres.2017.05.002
  • Comparison of Vavoua, Malaise and Nzi traps with and without attractants
           for trapping of Stomoxys spp. (Diptera: Muscidae) and tabanids (Diptera:
           Tabanidae) on cattle farms

    • Authors: Sarinyarat Tunnakundacha; Marc Desquesnes; Roungthip Masmeatathip
      Abstract: Publication date: Available online 16 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Sarinyarat Tunnakundacha, Marc Desquesnes, Roungthip Masmeatathip
      Insect traps can be used to monitor or collect haematophagous insects. The objective of this study was to compare the efficacy of three insect traps (Vavoua, Malaise and Nzi traps) on two cattle farms in Thailand. In addition, a comparison of olfactive attractants was carried out in pasture. Vavoua traps caught significantly (p <0.05) higher numbers of Stomoxys spp. than Malaise and Nzi traps, respectively, with daily means of 69.7±13.6, 31.3±26.6 and 32.3±25.8 stomoxes flies in a stable area in Nakhon Pathom province and 79.67±23.71, 46.67±21.55 and 58.33±24.11 in pasture in Kanchanaburi province. Conversely, Nzi traps caught significantly more tabanids than Malaise and Vavoua traps on both farms. The mean daily numbers of insects caught using traps baited with cow urine mixed with dry straw (CUS) significantly increased in Vavoua, Malaise and Nzi traps, respectively, by 2.2±0.9, 1.6±0.5 and 1.8±0.6 for stomoxes flies, and by 3.6±1.8, 3.3±1.7 and 1.8±0.4 for tabanids. Vavoua and Nzi traps baited with CUS could be used on farm and in pasture to contribute to respective reductions in stomoxes and tabanids adult, biting-fly populations.

      PubDate: 2017-10-19T12:18:37Z
      DOI: 10.1016/j.anres.2017.07.002
  • Characteristic of sausages as influenced by partial replacement of pork
           back-fat using pre-emulsified soybean oil stabilized by fish proteins

    • Authors: Nopparat Cheetangdee
      Abstract: Publication date: Available online 16 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Nopparat Cheetangdee
      Substitution of animal fat with oils rich in n-3 is a feasible way to improve the nutritive value of comminuted meat product. The effect on the characteristics of sausages was investigated of partial replacement of porcine fat with soybean oil (SBO) using a pre-emulsification technique. Fish protein isolate (FPI) produced from yellow stripe trevally (Selaroides leptolepis) was used as an emulsifier to prepare pre-emulsified SBO (preSBO), and its concentration effect (1%, 2% and 3%, w/v) was observed in comparison with soy protein isolate (SPI). Substitution of porcine fat using preSBO enhanced the product stability. SPI exhibited better emulsifying ability than FPI. However, FPI was more effective at reinforcing the protein matrix of the sausages than SPI, as suggested by a lowered cooking loss and the restored textural attributes of the sausages formulated with FPI stabilized preSBO. The effective concentration of FPI to improve the product stability was 2%. This work suggested that FPI was promising in the preparation of emulsified meat products.

      PubDate: 2017-10-19T12:18:37Z
      DOI: 10.1016/j.anres.2017.04.006
  • Effects of altrenogest treatment in sows on the variation of piglet birth
           weight and pre-weaning piglet performance

    • Authors: Supatee Kitkha; Alongkot Boonsoongnern; Nattavut Ratanavanichrojn; Pichai Jirawattanapong; Anuchai Pinyopummin
      Abstract: Publication date: Available online 16 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Supatee Kitkha, Alongkot Boonsoongnern, Nattavut Ratanavanichrojn, Pichai Jirawattanapong, Anuchai Pinyopummin
      The effect of altrenogest (ALT) feeding combined with induced ovulation by human chorionic gonadotropin (hCG) in sows was evaluated on piglet birth weight (BW) variation and pre-weaning performance. Sows were divided into four groups: the control (no ALT; without hCG induction; artificial inseminated (AI) at 12 and 36 h after estrus; n = 40), ALT+hCG72 (ALT 20 mg/d, D-4–D2 (D0: weaning day); hCG 750 IU at 72 h post AG; AI at 24 and 40 h after hCG; n = 41), ALT+hCG96 (ALT 20 mg/d, D-4–D2; hCG 750 IU at 96 h post ALT; AI at 24 and 40 h after hCG; n = 41) and ALT+no hCG (20 mg/d, D-4–D2; without hCG induction; AI at 12 and 36 h after estrus; n = 41). The results revealed that piglet BW was not different among the groups (p > 0.05). However, the standard deviation of piglet BW (SDBW) was lower in ALT+hCG72 (0.32 ± 0.02 kg; p = 0.032), compared to ALT+hCG96 (0.40 ± 0.02 kg) and ALT+no hCG (0.40 ± 0.02 kg), except for the control (0.39 ± 0.02 kg). In addition, the pre-weaning mortality rate (%PWM) due to underweight elimination at weaning (below 3.50 kg) was decreased in ALT+hCG72 (8.33%) compared to the control (32.50%; p = 0.007) but similar to ALT+hCG96 (10.71%) and ALT+no hCG (24.05%). Therefore, ALT+hCG72 treatment in sows could reduce piglet BW variation and the number of piglets eliminated at weaning.

      PubDate: 2017-10-19T12:18:37Z
      DOI: 10.1016/j.anres.2017.02.006
  • Prevalence and risk factors associated with Dirofilaria immitis infection
           in dogs and cats in Songkhla and Satun provinces, Thailand

    • Authors: Ketsarin Kamyingkird; Witchuta Junsiri; Witsanuwat Chimnoi; Chanya Kengradomkij; Sinsamut Saengow; Keplee Sangchuto; Wicha Kajeerum; Decha Pangjai; Burin Nimsuphan; Tawin Inpankeaw; Sathaporn Jittapalapong
      Abstract: Publication date: Available online 16 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Ketsarin Kamyingkird, Witchuta Junsiri, Witsanuwat Chimnoi, Chanya Kengradomkij, Sinsamut Saengow, Keplee Sangchuto, Wicha Kajeerum, Decha Pangjai, Burin Nimsuphan, Tawin Inpankeaw, Sathaporn Jittapalapong
      To update the microfilaria infection in companion animals, this study determined the prevalence and risk factors of microfilaria infection in dogs and cats collected from eight districts in Songkhla and Satun provinces, southern Thailand. In total, 482 samples (394 dogs and 88 cats) were subjected to microscopic examination (ME), polymerase chain reaction (PCR) and sequencing analysis. The overall prevalence of microfilaria infection in dogs and cats was 24.1% (95/394) and 36.4% (32/88) using PCR, respectively. Furthermore, the overall results were positive 7.7% (37/482) using ME compared to 26.3% (127/482) using PCR. Sequencing analysis of all positive PCR products identified the microfilaria as Dirofilaria immitis. D. immitis infection in each sampled district of Songkhla and Satun provinces was in the range 0–48% for dogs and in the range 15.4-75% for cats. Risk factor analysis showed that there was significantly higher D. immitis infection in dogs older than 2 yr. The study updated the prevalence of D. immitis infection in dogs and cats in two southern provinces of Thailand and there was a high D. immitis infection rate in old dogs (aged > 2 yr).

      PubDate: 2017-10-19T12:18:37Z
      DOI: 10.1016/j.anres.2017.05.003
  • Effects of feeding frequency on growth performance and digestive enzyme
           activity of sex-reversed Nile tilapia, Oreochromis niloticus (Linnaeus,

    • Authors: Karun Thongprajukaew; Satit Kovitvadhi; Uthaiwan Kovitvadhi; Pichanpop Preprame
      Abstract: Publication date: Available online 16 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Karun Thongprajukaew, Satit Kovitvadhi, Uthaiwan Kovitvadhi, Pichanpop Preprame
      The effects were investigated of different feeding frequencies—one meal (at 0600 hours, two meals (at either 0600 hours and 1200 hours or 0600 hours and 1800 hours) and three meals daily (at 0600 hours, 1200 hours and 1800 hours)—on the growth performance, digestive enzyme activity, muscle quality and carcass composition of sex-reversed fingerlings of Nile tilapia, Oreochromis niloticus (Linnaeus, 1758), in a recirculating aquaculture system over a 3 mth period. The experiment involved four replicates following a completely randomized design with 30 fish per replication. The growth performance of the fish fed twice daily at 0600 hours and 1800 hours and three times daily were similar (p > 0.05) and were higher than for the other treatments. There were no significant differences among the feed conversion ratios of all treatment groups over the 3 mth period. The specific activities of digestive enzyme, amylase, lipase, total proteases, trypsin and the ratios of trypsin to chymotrypsin and amylase to trypsin were similar among feeding frequencies. There was a significant decrease in the chymotrypsin specific activity in fish fed less often compared to the three-meals-daily group. The muscle quality and carcass composition were not affected by feeding frequencies, except for the muscle RNA. These results suggested a superior growth capacity of tilapias fed twice daily (0600 hours and 1800 hours) which may be of practical use in feeding management for tilapia farming.

      PubDate: 2017-10-19T12:18:37Z
      DOI: 10.1016/j.anres.2017.04.005
  • Effect of environmental conditions on flower induction of marian plum
           (Bouea burmanica Griff)

    • Authors: Vusie L. Mavuso; Chinawat Yapwattanaphun
      Abstract: Publication date: Available online 14 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Vusie L. Mavuso, Chinawat Yapwattanaphun
      Marian plum flowering naturally occurs during the cool, dry season so Thailand farmers usually withdraw irrigation a month before flowering. However, irregular flowering continues to be a serious problem. This study investigated the effects of environmental conditions (air temperature, soil moisture and relative humidity) on flower induction of marian plum. Daily weather data were collected using weather stations in three orchards where flowering was also recorded. Thirty representative trees per orchard were randomly selected for data collection. The results showed that trees from all orchards flowered in response to low temperature (below 18o C) despite different levels of water stress and relative humidity. These results indicated that soil moisture content and relative humidity had no influence on marian plum flower induction but enhanced flower bud development. Night temperatures of 18o C or lower are essential for marian plum flower induction.

      PubDate: 2017-10-19T12:18:37Z
      DOI: 10.1016/j.anres.2017.01.004
  • Low Frequency Tapping Systems Applied to Young-tapped Trees of Hevea
           brasiliensis (Willd. ex A. Juss.) Müll. Arg. in Southern Thailand

    • Authors: Thongchai Sainoi; Sayan Sdoodee; Regis Lacote; Eric Gohet
      Abstract: Publication date: Available online 14 October 2017
      Source:Agriculture and Natural Resources
      Author(s): Thongchai Sainoi, Sayan Sdoodee, Regis Lacote, Eric Gohet
      A declining rubber price and labor shortages in the context of climate variability are problems for rubber smallholders. A low frequency tapping system that may be a solution to these problems was tested in southern Thailand using eight-year-old trees of the RRIM600 clone at the Thepa Research Station, Songkhla province. The experimental design was a randomized complete block with five treatments defined in and abbreviated to: T1: S/3 d1 2d/3; T2: S/2 d2; T3: S/2 d3 ET 2.5% Pa1(1) 8/y (m); T4: S/3 d2 ET 2.5% Pa1(1) 4/y (m); and T5: S/3 d3 ET 2.5% Pa1(1) 12/y (m). There were three replications (elementary plot) with 10 trees per treatment in each elementary plot. The results showed that low frequency tapping systems (d3) with stimulation resulted in an equivalent yield in cumulative latex production compared with the other tapping systems and also had higher latex production per tapping. Bark consumption was less in the low frequency tapping systems leading to the possibility of lengthening the economic lifespan of the tapping panels of the tree. A low frequency tapping treatment with stimulation eight times per year induced decreases in the total solids, sucrose and reduced thiol contents; however, the inorganic phosphorus content increased, as is usually seen with the use of ethylene stimulation. The response of rubber trees to a low frequency tapping system should now be tested in the long term.

      PubDate: 2017-10-19T12:18:37Z
      DOI: 10.1016/j.anres.2017.03.001
  • TOC

    • Abstract: Publication date: June 2017
      Source:Agriculture and Natural Resources, Volume 51, Issue 3

      PubDate: 2017-09-04T00:07:10Z
  • Effects of altitude and harvesting dates on morphological characteristics,
           yield and nutritive value of desho grass (Pennisetum pedicellatumTrin.) in

    • Authors: Bimrew Asmare; Solomon Demeke; Taye Tolemariam; Firew Tegegne; Aynalem Haile; Jane Wamatu
      Abstract: Publication date: Available online 21 July 2017
      Source:Agriculture and Natural Resources
      Author(s): Bimrew Asmare, Solomon Demeke, Taye Tolemariam, Firew Tegegne, Aynalem Haile, Jane Wamatu
      The effects of altitude and harvesting period on the performance of desho grass were evaluated in Ethiopia. A factorial arrangement of treatments was employed with a combination of two altitudes and three harvesting dates. Planting and management of desho grass was undertaken according to recommendations for the species. The data collected consisted of plant height, number of tillers, number and length of leaves, leaf-to-stem ratio and fresh yield. Chemical analysis of the constituents of desho grass samples was completed according to standard procedures. All data were subjected to two analysis of variance procedures and Pearson correlation analysis, with significance tested at p<0.05.Results indicated that most morphological characteristics were not significantly different due to altitude except the leaf length per plant. Harvesting dates significantly affected the number of leaves per plant, leaf-to-stem ratio and dry matter yield. Both altitude and harvesting date significantly affected the crude protein content, yield and fiber fractions. Calcium content was significantly different only regarding harvesting date and phosphorus content was significantly affected by altitude. Dry matter content and yield were positively correlated with parameters such as plant height, leaf length per plant, crude protein (CP) yield, fiber fractions (neutral detergent fiber and acid detergent fiber) and with each other. Crude protein content was positively correlated with the CP yield. Overall results indicated that desho grass was affected more by harvesting date than altitude. Generally, desho grass performed well both at mid and high altitude in Ethiopia and could be a potential livestock feed in the country.

      PubDate: 2017-07-26T14:50:28Z
      DOI: 10.1016/j.anres.2016.11.001
  • Solubility curve of rock powder inoculated with microorganisms in the
           production of biofertilizers

    • Authors: Valéria Nogueira da Silva; Luiz Eduardo de Souza Fernandes da Silva; Apolino José Nogueira da Silva; Newton Pereira Stamford; Gorete Ribeiro de Macedo
      Abstract: Publication date: Available online 20 July 2017
      Source:Agriculture and Natural Resources
      Author(s): Valéria Nogueira da Silva, Luiz Eduardo de Souza Fernandes da Silva, Apolino José Nogueira da Silva, Newton Pereira Stamford, Gorete Ribeiro de Macedo
      The study was conducted at the Biochemistry Engineering Laboratory of the Federal University of the Rio Grande do Norte to verify the efficacy of microorganisms as solvents of apatite and biotite rock powder to enable the availability and rapid production of biofertilizers. Bacteria Paenibacillus polymyxa, Ralstonia solanacearum, Cromobacterium violaceum and Acidithiobacillus thiooxidans and fungi Penicillium fellutanum and Tricoderma humatum were inoculated into biotite rock powder and apatite rock powder originating from the States of Paraíba and Paraná, respectively, in Brazil. Rock powder samples were taken on Petri plates, 10% sulfur was added to each, and were subsequently inoculated and co-inoculated for a period of 72 days. Every 12th day, the samples were withdrawn and their mineral release curve was studied. From our results, the co-inoculations with Paenibacillus polymyxa + Ralstonia solanacearum and Paenibacillus polymyxa + Cromobacterium violaceum rendered higher solubility of K and P, respectively, at 36 days.

      PubDate: 2017-07-26T14:50:28Z
      DOI: 10.1016/j.anres.2017.01.001
  • Effects of Two Neck Rail Positions on Heifer’s Behavior and Stall
           Cleanliness in Free Stall Barn

    • Authors: Neng Risris Sudolar; Rapeepong Panivivat; Panwadee Sopannarath
      Abstract: Publication date: Available online 15 June 2017
      Source:Agriculture and Natural Resources
      Author(s): Neng Risris Sudolar, Rapeepong Panivivat, Panwadee Sopannarath
      Stall usage and cleanliness are affected by stall design, which includes neck rail positions for dairy heifers. A comparison was for two neck rail positions to determine the preferences for tropical dairy heifers in a free stall barn. Twenty four crossbred Holstein pregnant heifers were divided into two groups, one using the current and the second using the new position. The current position of neck rail was placed at 160 cm from the curb at 124 cm height, whereas the new position was placed at 150 cm from the curb at 122 cm height. The comparison test was followed by a free choice test to assess preferences for one of two positions. The dairy heifers’ activity in the stall was video recorded for 7 consecutive days for each period during the comparison test, and 3 days for preference test. Stall cleanliness was assessed once daily. The results demonstrated that the dairy heifers’ behavior were not significantly different between the two positions (p > 0.05). Dairy heifers did not show any clear preferences on one of two neck rail positions. However, the rear area of stalls with new neck rail position were cleaner than those with current neck rail position (p < 0.01). Therefore, the new position of neck rail seemed suitable for tropical dairy heifers in terms of stall cleanliness.

      PubDate: 2017-06-17T12:25:21Z
      DOI: 10.1016/j.anres.2017.05.001
  • Phytotoxic effects of biochar-produced from argan shells-on Salad and
           Barley germination

    • Authors: Laila Bouqbis; Salma Daoud; Hans Werner Koyro; Claudia Irene Kammann; Lalla Fatima Zohra Ainlhout; Moulay Cherif Harrouni
      Abstract: Publication date: Available online 15 May 2017
      Source:Agriculture and Natural Resources
      Author(s): Laila Bouqbis, Salma Daoud, Hans Werner Koyro, Claudia Irene Kammann, Lalla Fatima Zohra Ainlhout, Moulay Cherif Harrouni
      Biochar produced from argan shells can be contaminated by toxic substances accumulated during pyrolysis process. To determine the potential impact of toxic substances and salt stress, this study focused on the effect argan shells biochar has on germination of salad (0%, 0,5%, 1%, 2%, 4% and 8% biochar dry weight in the mixture sand-biochar) and barley seeds (0%, 1%, 2,5%, 5% and 10% biochar dry weight in the mixture peat-biochar). Concerning the salt stress effect of biochar on germination of salad, no negative effect of agran shells biochar was observed neither on germination rate nor on fresh weight of seedlings. Additionally, biochar application increases the germination rate and the fresh weight of biomass in all of the considered treatments. For barley germination test, no significant difference was observed when comparing the germination rate, fresh/dry weight of barley seedlings, water content and water use efficiency of different mixtures (peat-biochar) with those of control. Thus, on both salad and barley germination test, no negative effect of biochar produced from argan shells has been revealed which provide a preliminary indication that it could be safely used for agriculture.

      PubDate: 2017-05-19T03:31:04Z
      DOI: 10.1016/j.anres.2017.04.001
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