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Publisher: Elsevier   (Total: 3034 journals)

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Showing 1 - 200 of 3034 Journals sorted alphabetically
AASRI Procedia     Open Access   (Followers: 15)
Academic Pediatrics     Hybrid Journal   (Followers: 19, SJR: 1.402, h-index: 51)
Academic Radiology     Hybrid Journal   (Followers: 16, SJR: 1.008, h-index: 75)
Accident Analysis & Prevention     Partially Free   (Followers: 81, SJR: 1.109, h-index: 94)
Accounting Forum     Hybrid Journal   (Followers: 23, SJR: 0.612, h-index: 27)
Accounting, Organizations and Society     Hybrid Journal   (Followers: 27, SJR: 2.515, h-index: 90)
Achievements in the Life Sciences     Open Access   (Followers: 4)
Acta Anaesthesiologica Taiwanica     Open Access   (Followers: 5, SJR: 0.338, h-index: 19)
Acta Astronautica     Hybrid Journal   (Followers: 322, SJR: 0.726, h-index: 43)
Acta Automatica Sinica     Full-text available via subscription   (Followers: 3)
Acta Biomaterialia     Hybrid Journal   (Followers: 25, SJR: 2.02, h-index: 104)
Acta Colombiana de Cuidado Intensivo     Full-text available via subscription  
Acta de Investigación Psicológica     Open Access   (Followers: 2)
Acta Ecologica Sinica     Open Access   (Followers: 8, SJR: 0.172, h-index: 29)
Acta Haematologica Polonica     Free   (SJR: 0.123, h-index: 8)
Acta Histochemica     Hybrid Journal   (Followers: 3, SJR: 0.604, h-index: 38)
Acta Materialia     Hybrid Journal   (Followers: 200, 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: 9, SJR: 0.915, h-index: 53)
Acta Otorrinolaringologica (English Edition)     Full-text available via subscription   (Followers: 1)
Acta Otorrinolaringológica Española     Full-text available via subscription   (Followers: 3, SJR: 0.311, h-index: 16)
Acta Pharmaceutica Sinica B     Open Access   (Followers: 2)
Acta Poética     Open Access   (Followers: 4)
Acta Psychologica     Hybrid Journal   (Followers: 22, SJR: 1.365, h-index: 73)
Acta Sociológica     Open Access  
Acta Tropica     Hybrid Journal   (Followers: 5, SJR: 1.059, h-index: 77)
Acta Urológica Portuguesa     Open Access  
Actas Dermo-Sifiliograficas     Full-text available via subscription   (Followers: 4)
Actas Dermo-Sifiliográficas (English Edition)     Full-text available via subscription   (Followers: 3)
Actas Urológicas Españolas     Full-text available via subscription   (Followers: 4, SJR: 0.383, h-index: 19)
Actas Urológicas Españolas (English Edition)     Full-text available via subscription   (Followers: 2)
Actualites Pharmaceutiques     Full-text available via subscription   (Followers: 5, SJR: 0.141, h-index: 3)
Actualites Pharmaceutiques Hospitalieres     Full-text available via subscription   (Followers: 4, SJR: 0.112, h-index: 2)
Acupuncture and Related Therapies     Hybrid Journal   (Followers: 3)
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: 5)
Additive Manufacturing     Hybrid Journal   (Followers: 7, SJR: 1.039, h-index: 5)
Additives for Polymers     Full-text available via subscription   (Followers: 20)
Advanced Drug Delivery Reviews     Hybrid Journal   (Followers: 122, 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: 9, SJR: 0.299, h-index: 15)
Advances in Agronomy     Full-text available via subscription   (Followers: 15, SJR: 2.071, h-index: 82)
Advances in Anesthesia     Full-text available via subscription   (Followers: 24, SJR: 0.169, h-index: 4)
Advances in Antiviral Drug Design     Full-text available via subscription   (Followers: 3)
Advances in Applied Mathematics     Full-text available via subscription   (Followers: 6, 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: 21, SJR: 1.286, h-index: 49)
Advances In Atomic, Molecular, and Optical Physics     Full-text available via subscription   (Followers: 16, 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: 3, SJR: 0.619, h-index: 48)
Advances in Cancer Research     Full-text available via subscription   (Followers: 25, SJR: 2.215, h-index: 78)
Advances in Carbohydrate Chemistry and Biochemistry     Full-text available via subscription   (Followers: 9, SJR: 0.9, h-index: 30)
Advances in Catalysis     Full-text available via subscription   (Followers: 5, SJR: 2.139, h-index: 42)
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: 24, 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: 8, 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: 18, SJR: 2.314, h-index: 130)
Advances in Computers     Full-text available via subscription   (Followers: 16, SJR: 0.223, h-index: 22)
Advances in Developmental Biology     Full-text available via subscription   (Followers: 11)
Advances in Digestive Medicine     Open Access   (Followers: 4)
Advances in DNA Sequence-Specific Agents     Full-text available via subscription   (Followers: 5)
Advances in Drug Research     Full-text available via subscription   (Followers: 22)
Advances in Ecological Research     Full-text available via subscription   (Followers: 39, SJR: 3.25, h-index: 43)
Advances in Engineering Software     Hybrid Journal   (Followers: 25, SJR: 0.486, h-index: 10)
Advances in Experimental Biology     Full-text available via subscription   (Followers: 7)
Advances in Experimental Social Psychology     Full-text available via subscription   (Followers: 40, SJR: 5.465, h-index: 64)
Advances in Exploration Geophysics     Full-text available via subscription   (Followers: 3)
Advances in Fluorine Science     Full-text available via subscription   (Followers: 8)
Advances in Food and Nutrition Research     Full-text available via subscription   (Followers: 43, SJR: 0.674, h-index: 38)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 14)
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: 12)
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: 20, SJR: 0.906, h-index: 24)
Advances in Heterocyclic Chemistry     Full-text available via subscription   (Followers: 8, SJR: 0.497, h-index: 31)
Advances in Human Factors/Ergonomics     Full-text available via subscription   (Followers: 24)
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: 34, SJR: 4.152, h-index: 85)
Advances in Inorganic Chemistry     Full-text available via subscription   (Followers: 9, SJR: 1.132, h-index: 42)
Advances in Insect Physiology     Full-text available via subscription   (Followers: 3, SJR: 1.274, h-index: 27)
Advances in Integrative Medicine     Hybrid Journal   (Followers: 4)
Advances in Intl. Accounting     Full-text available via subscription   (Followers: 4)
Advances in Life Course Research     Hybrid Journal   (Followers: 7, 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: 16, 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: 5, 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: 22)
Advances in Molecular and Cellular Endocrinology     Full-text available via subscription   (Followers: 10)
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: 4)
Advances in Oncobiology     Full-text available via subscription   (Followers: 3)
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: 7, SJR: 0.148, h-index: 11)
Advances in Parasitology     Full-text available via subscription   (Followers: 7, SJR: 2.37, h-index: 73)
Advances in Pediatrics     Full-text available via subscription   (Followers: 21, SJR: 0.4, h-index: 28)
Advances in Pharmaceutical Sciences     Full-text available via subscription   (Followers: 13)
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: 7, 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: 8)
Advances in Plant Pathology     Full-text available via subscription   (Followers: 5)
Advances in Porous Media     Full-text available via subscription   (Followers: 4)
Advances in Protein Chemistry     Full-text available via subscription   (Followers: 18)
Advances in Protein Chemistry and Structural Biology     Full-text available via subscription   (Followers: 19, SJR: 1.5, h-index: 62)
Advances in Psychology     Full-text available via subscription   (Followers: 58)
Advances in Quantum Chemistry     Full-text available via subscription   (Followers: 5, SJR: 0.478, h-index: 32)
Advances in Radiation Oncology     Open Access  
Advances in Small Animal Medicine and Surgery     Hybrid Journal   (Followers: 2, SJR: 0.1, h-index: 2)
Advances in Space Research     Full-text available via subscription   (Followers: 337, SJR: 0.606, h-index: 65)
Advances in Structural Biology     Full-text available via subscription   (Followers: 8)
Advances in Surgery     Full-text available via subscription   (Followers: 6, 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: 15)
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: 43, SJR: 2.408, h-index: 94)
Aeolian Research     Hybrid Journal   (Followers: 5, SJR: 0.973, h-index: 22)
Aerospace Science and Technology     Hybrid Journal   (Followers: 309, 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: 4, SJR: 0.344, h-index: 6)
Ageing Research Reviews     Hybrid Journal   (Followers: 7, SJR: 3.289, h-index: 78)
Aggression and Violent Behavior     Hybrid Journal   (Followers: 393, 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: 30, SJR: 1.275, h-index: 74)
Agricultural Water Management     Hybrid Journal   (Followers: 38, SJR: 1.546, h-index: 79)
Agriculture and Agricultural Science Procedia     Open Access  
Agriculture and Natural Resources     Open Access   (Followers: 1)
Agriculture, Ecosystems & Environment     Hybrid Journal   (Followers: 50, 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: 5, 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: 9, SJR: 0.922, h-index: 66)
Alcoholism and Drug Addiction     Open Access   (Followers: 5)
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  
Algal Research     Partially Free   (Followers: 8, SJR: 2.05, h-index: 20)
Alkaloids: Chemical and Biological Perspectives     Full-text available via subscription   (Followers: 3)
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)
ALTER - European J. of Disability Research / Revue Européenne de Recherche sur le Handicap     Full-text available via subscription   (Followers: 6, SJR: 0.158, h-index: 9)
Alzheimer's & Dementia     Hybrid Journal   (Followers: 46, SJR: 4.289, h-index: 64)
Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring     Open Access   (Followers: 5)
Alzheimer's & Dementia: Translational Research & Clinical Interventions     Open Access   (Followers: 3)
American Heart J.     Hybrid Journal   (Followers: 46, SJR: 3.157, h-index: 153)
American J. of Cardiology     Hybrid Journal   (Followers: 45, SJR: 2.063, h-index: 186)
American J. of Emergency Medicine     Hybrid Journal   (Followers: 34, SJR: 0.574, h-index: 65)
American J. of Geriatric Pharmacotherapy     Full-text available via subscription   (Followers: 6, SJR: 1.091, h-index: 45)
American J. of Geriatric Psychiatry     Hybrid Journal   (Followers: 15, SJR: 1.653, h-index: 93)
American J. of Human Genetics     Hybrid Journal   (Followers: 30, SJR: 8.769, h-index: 256)
American J. of Infection Control     Hybrid Journal   (Followers: 24, 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: 44, 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: 180, SJR: 2.255, h-index: 171)
American J. of Ophthalmology     Hybrid Journal   (Followers: 54, SJR: 2.803, h-index: 148)
American J. of Ophthalmology Case Reports     Open Access   (Followers: 2)
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: 23, SJR: 0.59, h-index: 45)
American J. of Pathology     Hybrid Journal   (Followers: 23, SJR: 2.653, h-index: 228)
American J. of Preventive Medicine     Hybrid Journal   (Followers: 21, SJR: 2.764, h-index: 154)
American J. of Surgery     Hybrid Journal   (Followers: 33, 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: 5)
Anaerobe     Hybrid Journal   (Followers: 4, SJR: 1.066, h-index: 51)
Anaesthesia & Intensive Care Medicine     Full-text available via subscription   (Followers: 51, SJR: 0.124, h-index: 9)
Anaesthesia Critical Care & Pain Medicine     Full-text available via subscription   (Followers: 3)
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: 2, SJR: 2.577, h-index: 7)
Analytica Chimica Acta     Hybrid Journal   (Followers: 38, SJR: 1.548, h-index: 152)
Analytical Biochemistry     Hybrid Journal   (Followers: 161, SJR: 0.725, h-index: 154)
Analytical Chemistry Research     Open Access   (Followers: 8, SJR: 0.18, h-index: 2)
Analytical Spectroscopy Library     Full-text available via subscription   (Followers: 10)
Anesthésie & Réanimation     Full-text available via subscription  
Anesthesiology Clinics     Full-text available via subscription   (Followers: 21, SJR: 0.421, h-index: 40)
Angiología     Full-text available via subscription   (SJR: 0.124, h-index: 9)
Angiologia e Cirurgia Vascular     Open Access  
Animal Behaviour     Hybrid Journal   (Followers: 151, SJR: 1.907, h-index: 126)
Animal Feed Science and Technology     Hybrid Journal   (Followers: 5, SJR: 1.151, h-index: 83)
Animal Reproduction Science     Hybrid Journal   (Followers: 5, SJR: 0.711, h-index: 78)
Annales d'Endocrinologie     Full-text available via subscription   (SJR: 0.394, h-index: 30)
Annales d'Urologie     Full-text available via subscription  
Annales de Cardiologie et d'Angéiologie     Full-text available via subscription   (SJR: 0.177, h-index: 13)
Annales de Chirurgie de la Main et du Membre Supérieur     Full-text available via subscription  
Annales de Chirurgie Plastique Esthétique     Full-text available via subscription   (Followers: 2, SJR: 0.354, h-index: 22)
Annales de Chirurgie Vasculaire     Full-text available via subscription   (Followers: 1)

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Journal Cover Agriculture and Natural Resources
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  This is an Open Access Journal Open Access journal
   ISSN (Online) 2452-316X
   Published by Elsevier Homepage  [3034 journals]
  • 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
       
  • Optimum proportion of sweet corn by-product silage (SCW) and rice straw in
           total mixed ration using in vitro gas production

    • Authors: Thaintip Kraiprom; Sornthep Tumwasorn
      Abstract: Publication date: Available online 15 June 2017
      Source:Agriculture and Natural Resources
      Author(s): Thaintip Kraiprom, Sornthep Tumwasorn
      An in vitro gas technique was used to study the effects of different proportions of sweet corn by-product silage (SCW) and rice straw (RS) on in vitro fermentation. The dietary treatments were ratios of SCW and RS all on a on a dry matter (DM) basis: T1 = SCW: RS at 60:40; T2 = SCW: RS at 50:50; and T3 = SCW:RS at 40:60. The ration of concentrate and roughage was 60:40 on a DM basis. The DM, crude protein (CP), ether extract (EE), acid detergent fiber (ADF) and neutral detergent fiber (NDF) of SCW were 22.56, 7.11, 1.89, 41.34 and 78.45%, respectively. The results showed that cumulative gas production at 48 hr and 72 h after incubation with the ratio of SCW to RS at 60:40 on a DM basis was significantly (p < 0.05) higher than the results from the ratio of SCW to RS at either 50:50 or 40:60 on a DM basis. The proportion of SCW and RS among treatments had no effect on true digestibility parameters. However, the in vitro organic matter digestibility parameters in the treatment group with SCW:RS at 60:40 on a DM basis were higher (p < 0.05) than in the other two treatments. The total volatile fatty acid in the treatment group with SCW:RS at 50:50 and 40:60 on a DM basis were higher (p < 0.05) than in the treatment group with SCW:RS at 60:40 on a DM basis. Acetic acid (C2), propionic acid (C3) butyric acid (C4) and the proportion of C2:C3 were not different (p < 0.05) among treatments. The levels of NH3-N in all groups were not significant (p < 0.05) among treatments. It was concluded that the optimum level of SCW:RS was 60:40 on a DM basis.

      PubDate: 2017-06-17T12:25:21Z
      DOI: 10.1016/j.anres.2016.10.007
       
  • Evaluation of incense-resinous wood formation in agarwood (Aquilaria
           malaccensis Lam.) using sonic tomography

    • Authors: Nadya Putri; Lina Karlinasari; Maman Turjaman; Imam Wahyudi; Dodi Nandika
      Abstract: Publication date: Available online 14 June 2017
      Source:Agriculture and Natural Resources
      Author(s): Nadya Putri, Lina Karlinasari, Maman Turjaman, Imam Wahyudi, Dodi Nandika
      Incense-resinous wood of agarwood is a high-value non-timber forest product found in the trunk or branches of Aquliaria and Gyrinops species. Incense-resinous wood of agarwood is formed as a response to tree damage caused by wounding or fungal attack. Detection of such wood in trees has generally been carried out based on natural signs such as dark spots or black marks when peeling back tree bark, but these often yield uncertain results. Sonic tomography can be applied to predict the presence of incense-resinous wood in standing trees. The objective of this study was to evaluate sonic tomography at various trunk heights based on variations in the sound velocity associated with the presence of incense-resinous wood. Ten agarwood trees (Aquilaria malaccensis) were selected for this study; five trees were artificially inoculated with Fusarium solani fungus and the other five were untreated. The results showed that the height of the measurement did not significantly affect the propagation velocity of sound waves or the tomographic results. Sonic tomography revealed that prediction of the deteriorated zone which is indicative of incense-resinous wood formation was 1.1% greater in inoculated trees than in uninoculated trees.

      PubDate: 2017-06-17T12:25:21Z
      DOI: 10.1016/j.anres.2016.08.009
       
  • Effects of Malachite Green on Growth and Tissue Accumulation in Pak Choy
           (Brassica chinensis Tsen & Lee)

    • Authors: Piyaporn Matpang; Manop Sriuttha; Narumol Piwpuan
      Abstract: Publication date: Available online 10 June 2017
      Source:Agriculture and Natural Resources
      Author(s): Piyaporn Matpang, Manop Sriuttha, Narumol Piwpuan
      Reuse for agricultural purposes of aquaculture wastewater containing high levels of nutrients can be integrated into a water management strategy, in order to conserve water and alleviate water pollution problems. However, rather than nutrients, some contaminants in aquaculture wastewater may pose detrimental effects on plants being nourished. This study assessed the growth and accumulation of toxic substances of Brassica chinensis in response to Malachite Green (MG)-contaminated water. Plant seedlings were hydroponically grown with MG at 1 mg/L, 2 mg/L or 4 mg/L under ambient air conditions in the laboratory for 4 wk. Growth parameters—the number of leaves, plant height, leaf length and width, root length and dry mass of the plants—were compared with plants grown without MG (control). The concentrations at 2 mg/L and 4 mg/L affected the growth of the plants as measured by leaf length, plant height and leaf width generally to a lesser degree than the control plants and those grown at 1 mg/L MG (p < 0.05). The roots of plants were clearly affected by MG (average root length = 14.00 ± 1.17 cm, 14.50 ± 3.91 cm, 7.17 ± 1.52 cm and 6.58 ± 0.94 cm for plants from the control and treatments with MG at 1 mg/L, 2 mg/L and 4 mg/L, respectively, p < 0.001). The dry mass of treated plants (average dry mass = 1.22 ± 0.48 g/plant, 1.17 ± 0.27 g/plant and 0.86 ± 0.17 g/plant for treatments of MG at 1 mg/L, 2 mg/L and 4 mg/L, respectively) were lower than that of control plants (1.80 ± 0.73 g/plant) (p < 0.001). The increase in the oxalate content in the plant shoots suggested that the plants may accumulate substances that could be harmful to human health. Based on these results, it is proposed that the integration of hydroponic plant production with MG-contaminated water at a concentration not exceeding 1 mg/L can be applied without any reduction in the productivity of B. chinensis; however, the accumulation of toxic substances in plant tissues still needs to be identified.

      PubDate: 2017-06-13T13:52:12Z
      DOI: 10.1016/j.anres.2016.10.008
       
  • Effects of phosphorus addition on nitrogen cycle and fluxes of N2O and CH4
           in tropical tree plantation soils in Thailand

    • Authors: Taiki Mori; Chongrak Wachrinrat; Duriya Staporn; Ponthep Meunpong; Warawich Suebsai; Kazuki Matsubara; Khitja Boonsri; Warisa Lumban; Manassawee Kuawong; Thanida Phukdee; Juruwan Srifai; Kannika Boonman
      Abstract: Publication date: Available online 10 June 2017
      Source:Agriculture and Natural Resources
      Author(s): Taiki Mori, Chongrak Wachrinrat, Duriya Staporn, Ponthep Meunpong, Warawich Suebsai, Kazuki Matsubara, Khitja Boonsri, Warisa Lumban, Manassawee Kuawong, Thanida Phukdee, Juruwan Srifai, Kannika Boonman
      An incubation experiment was conducted to test the effects of phosphorus (P) addition on nitrous oxide (N2O) emissions and methane (CH4) uptakes, using tropical tree plantation soils in Thailand. Soil samples were taken from five forest stands—Acacia auriculiformis, Acacia mangium, Eucalyptus camaldulensis, Hopea odorata, and Xylia xylocarpa—and incubated at 80% water holding capacity. P addition stimulated N2O emissions only in Xylia xylocarpa soils. Since P addition tended to increase net ammonification rates in Xylia xylocarpa soils, the stimulated N2O emissions were suggested to be due to the stimulated nitrogen (N) cycle by P addition and the higher N supply for nitrification and denitrification. In other soils, P addition had no effects on N2O emissions or soil N properties, except that P addition tended to increase the soil microbial biomass N in Acacia auriculiformis soils. No effects of P addition were observed on CH4 uptakes in any soil. It is suggested that P addition on N2O and CH4 fluxes at the study site were not significant, at least under laboratory conditions.

      PubDate: 2017-06-13T13:52:12Z
      DOI: 10.1016/j.anres.2016.03.002
       
  • Allelopathic effects of jungle rice (Echinochloa colona (L.)Link) extract
           on seed germination and seedling growth of rice

    • Authors: Pimjai Sitthinoi; Sukumarn Lertmongkol; Wanchai Chanprasert; Srunya Vajrodaya
      Abstract: Publication date: Available online 9 June 2017
      Source:Agriculture and Natural Resources
      Author(s): Pimjai Sitthinoi, Sukumarn Lertmongkol, Wanchai Chanprasert, Srunya Vajrodaya
      The allelopathic effects of jungle rice were investigated on the seed germination and seedling growth of the two rice cultivars, Khao Dawk Mali 105 and RD41. Jungle rice extract with varying concentrations (0 mg/mL, 1 mg/mL, 5 mg/mL and 10 mg/mL) was prepared using three solvents (hexane, dichloromethane and methanol) from shoots and roots separately. The jungle rice extracts from the shoot part showed a higher inhibitory effect on the root length and seedling dry weight of rice compared to the extracts from the root part. Different extraction solvents caused differences in the inhibitory effect on the germination and seedling growth of rice and had an interaction with the extract concentration in all parameters measured. Methanol extraction solvent severely inhibited the seed germination of both cultivars regardless of the extract concentrations, whereas the jungle rice extracts using dichloromethane and hexane showed moderate inhibitory effects depending on the concentrations of 1–10 mg/mL, respectively. It can be concluded that jungle rice extracts contain allelopathic compounds and can inhibit the seed germination and seedling growth of rice. Methanol should be used as an extraction solvent if the inhibitory effect of the jungle rice extract is required.

      PubDate: 2017-06-13T13:52:12Z
      DOI: 10.1016/j.anres.2016.09.004
       
  • Antioxidant and anticancer activities of Plectranthus stocksii Hook. f.
           leaf and stem extracts

    • Authors: Kasipandi Muniyandi; Elizabeth George; Vekataramana Mudili; Naveen Kumar Kalagatur; Allen Joseph Anthuvan; Kadirvelu Krishna; Parimelazhagan Thangaraj; Gopalan Natarajan
      Abstract: Publication date: Available online 9 June 2017
      Source:Agriculture and Natural Resources
      Author(s): Kasipandi Muniyandi, Elizabeth George, Vekataramana Mudili, Naveen Kumar Kalagatur, Allen Joseph Anthuvan, Kadirvelu Krishna, Parimelazhagan Thangaraj, Gopalan Natarajan
      The properties of Plectranthus stocksii—a well-known folk medicinal plant—were investigated. The plant extracts were successively extracted and tested for phytochemicals using high performance liquid chromatography, while antioxidant and anticancerous properties were assessed using MCF-7, Caco-2 and RAW 264.7 cancerous cell line models. The methanolic extract of leaves showed higher concentrations of total phenolics (415.41 mg gallic acid equivalents/g extract) and tannins (177.53 mg gallic acid equivalents/g extract) contents than other studied extracts. In the case of flavonoids, ethyl acetate extract of leaf (LEA) showed a higher concentration (777.11 mg rutin equivalents/g extract) and was also found to have better antioxidant activity against stable radical 2,2-diphenylpicrylhydrazyl (3.46 μg/mL), 2,2’azinobis(3-ethylbenzothiozoline-6-sulfonic acid) disodium salt radical (27.41 mM Trolox equivalent/g extract) and superoxide (24.16 μg/mL) radicals and showed better IC50 (the concentration of the sample at which the inhibition rate reaches 50%) values on MCF-7 (48.874 μg/mL) and Caco-2 (36.088 μg/mL) cancerous cell line models. The immense anti-oxidant potential of P. stocksii leaf and stem extracts could be utilized as a good source of natural, anti-oxidant supplement in food to defend against oxidative-stress-related disorders and more generally in the food safety industry.

      PubDate: 2017-06-13T13:52:12Z
      DOI: 10.1016/j.anres.2016.07.007
       
  • Molecular characterization and expression analysis of Cyclin B and Cell
           division cycle 2 in Gonads of Diploid and Triploid Bighead Catfish,
           Clarias macrocephalus Günther, 1864

    • Authors: Anyalak Wachirachaikarn; Wikrom Rungsin Prapansak Srisapoome Sirawut Klinbunga Uthairat Na-Nakorn
      Abstract: Publication date: Available online 24 May 2017
      Source:Agriculture and Natural Resources
      Author(s): Anyalak Wachirachaikarn, Wikrom Rungsin, Prapansak Srisapoome, Sirawut Klinbunga, Uthairat Na-Nakorn
      This study investigated the differential expression of genes associated with reproduction in sterile triploid and normal diploid bighead catfish (Clarias macrocephalus Günther, 1864). The triploid fish were produced using cold shock and were reared in the same conditions as the diploid counterpart. The histomicrographs showed completely retarded triploid gonads across the samples aged 2–12 mth, whereas the gonads of the diploids were in developing stages during 2–4 mth, reached the early maturing stage at 6 mth, matured at 8 mth and showed signs of atresia at 10–12 mth. In parallel, the full-length cDNAs of cyclin B1 (CmCcnb1; 1539 bp in length with an open reading frame (ORF) of 1194 bp corresponding to 397 amino acids) and cell division cycle 2 (CmCdc2; 1355 bp, an ORF of 909 bp, 302 amino acids) of bighead catfish (Clarias macrocephalus Günther, 1864) were isolated. Phylogenetic analysis revealed that the newly characterized CmCcnb1 should be regarded as a member of cyclin B1 rather than cyclin B2. The expression level of CmCcnb1 mRNA was limited in different stages of the ovaries and testes of triploids. In diploid ovaries, its expression was significantly higher than that in triploid ovaries in fish aged 2 mth (513.43 ± 82.22 fold) and in fish aged 8 mth (2,430.87 ± 900.06 fold). The CmCcnb1 level in the testes of diploids was significantly greater than that in triploids in fish aged 2 mth (928.85 ± 208.72 fold). Similarly, expression of CmCdc2 mRNA was also reduced in triploids. Its expression was significantly lower than that in diploid females aged 2 mth (7.66 ± 3.42 fold), 4 mth (59.42 ± 10.50 fold) and 8 mth (42.74 ± 8.36 fold). In males, significantly greater expression of CmCdc2 was observed at age 6 mth (58.61 ± 34.64 fold) and 8 mth (72.70 ± 4.36 fold) diploids compared to triploids. The results illustrated that CmCcnb1 and CmCdc2 are functionally involved in oogenesis and spermatogenesis and reduced expression levels of these transcripts affected the reproductive development of triploid C. macrocephalus.

      PubDate: 2017-05-24T04:22:17Z
       
  • Effects of alternative oil sources in feed on growth and fatty acid
           composition of juvenile giant river prawn (Macrobrachium rosenbergii)

    • Authors: Chanpim Kangpanich; Jarunan Pratoomyot Wansuk Senanan
      Abstract: Publication date: Available online 24 May 2017
      Source:Agriculture and Natural Resources
      Author(s): Chanpim Kangpanich, Jarunan Pratoomyot, Wansuk Senanan
      To relieve the pressure on the future use of fish oil (FO), alternative oil sources need to be explored. Alternative oil sources were evaluated—Schizochytrium sp. (SZ) and soybean oil (SO)—on the growth performance and flesh quality of juvenile river prawn, Macrobrachium rosenbergii. Five experimental diets differed in the types of oil used (oil comprised 3% of dietary ingredients): 3% FO, 1% SZ + 2% SO, 1.5% SZ + 1.5% SO, 2% SZ +1% SO and 3% SZ. After 60 d of the experiment, the survival rates of prawns fed non-FO diets did not significantly (p > 0.05) differ from those fed the FO diet (77.82 ± 4.45–93.38 ± 0.00%). Moreover, prawns fed diets containing both SZ and SO had significantly (p < 0.05) better growth performance than those fed a single oil source. Prawns fed 2% SZ+1% SO showed the best final weight, percentage weight gain, absolute daily weight gain, specific growth rate and feed conversion ratio (p < 0.05) while those fed 1.5% SZ +1.5% SO or 3% SZ had the highest survival. Tissues of prawns fed the non-FO diets contained higher amounts of n-6 polyunsaturated fatty acid (PUFA) but were lower in n-3 long-chain PUFAs (eicosapentaenoic acid and docosahexaenoic acid) than those fed the FO diet. Among the non-FO groups, prawns fed 3% SZ had the most similar flesh fatty acid profile to those fed 3% FO. Substitution of FO with combinations of SZ and SO significantly improved growth performance and feed utilization. The study recommended diets containing 2% SZ + 1% SO or 1.5% SZ + 1.5% SO for M. rosenbergii juveniles.

      PubDate: 2017-05-24T04:22:17Z
       
  • Efficiency using computer simulation of Reverse Threshold Model Theory on
           assessing a“One Laptop Per Child” computer versus desktop computer

    • Authors: Supat Faarungsang; Sasithon Nakthong
      Abstract: Publication date: Available online 24 May 2017
      Source:Agriculture and Natural Resources
      Author(s): Supat Faarungsang, Sasithon Nakthong
      The Reverse Threshold Model Theory (RTMT) model was introduced based on limiting factor concepts, but its efficiency compared to the Conventional Model (CM) has not been published. This investigation assessed the efficiency of RTMT compared to CM using computer simulation on the “One Laptop Per Child” computer and a desktop computer. Based on probability values, it was found that RTMT was more efficient than CM among eight treatment combinations and an earlier study verified that RTMT gives complete elimination of random error. Furthermore, RTMT has several advantages over CM and is therefore proposed to be applied to most research data.

      PubDate: 2017-05-24T04:22:17Z
       
  • Environmental impact of white shrimp culture during 2012-2013 at Bandon
           Bay, Surat Thani province: A case study investigating farm size

    • Authors: Amonpak nakorn; Panalee Chevakidagarn Somtip Danteravanich
      Abstract: Publication date: Available online 24 May 2017
      Source:Agriculture and Natural Resources
      Author(s): Amonpak Na nakorn, Panalee Chevakidagarn, Somtip Danteravanich
      The environmental impact was studied due to water consumption and pollution loading from white shrimp culture at various shrimp farm scales. Field observation and in-depth interviews were carried out in 19 selected shrimp farms. The 38 water samples and 19 sediment samples from the shrimp farms from January–October, 2013 were analyzed and determined for their pollution loading from the wastewater and sediment discharged from the culture ponds. The results showed that for the same production, small-scale farms generated the highest pollution loading in wastewater and sediment, with respective values of per tonne production of 21.95 kg total Kjeldahl nitrogen and 1.12 kg total Kjeldahl nitrogen, 18.36 g Pb and 3.63 g Pb and 31.30 g As and 1.94 g As. However, for any-sized farm, the average total suspended solids and ammonia nitrogen of effluent from harvesting could not pass the Thai Effluent Standard for Coastal Aquaculture. In large-scale farms, the highest pollution loading per tonne production in wastewater discharged was 12.55 g Cu, while the highest pollution loadings per tonne production from the sediment generated were 20.98 kg organic matter, 0.079 g Cd and 26.65 g Cu. The large-scale farms used the highest proportion of refilled water (45.90%) and generated the highest amount of effluent during culture (39.26%). Only large-scale farms could manage their own control of water use to reduce environmental impacts. These results will be used further to determine the sustainability of shrimp farms at various scales.

      PubDate: 2017-05-24T04:22:17Z
       
  • 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
       
  • FM - TOC

    • Abstract: Publication date: February 2017
      Source:Agriculture and Natural Resources, Volume 51, Issue 1


      PubDate: 2017-04-05T08:43:47Z
       
  • Identification key to species of the flying lizard genus Draco Linnaeus,
           1758 (Squamata: Agamidae) in Thailand

    • Authors: Nattawut Srichairat; Pattanee Jantrarotai; Prateep Duengkae; Yodchaiy Chuaynkern
      Abstract: Publication date: Available online 6 March 2017
      Source:Agriculture and Natural Resources
      Author(s): Nattawut Srichairat, Pattanee Jantrarotai, Prateep Duengkae, Yodchaiy Chuaynkern
      A species identification key of flying lizards in the genus Draco from Thailand was constructed based on 521 preserved specimens from collections during 1967 to 2012 in the Thailand Natural History Museum, Bangkok, Thailand and the National Science Museum, Pathum Thani province, Thailand. Regardless of sexual characters, four characters were used to identify Draco spp. lizards: 1) nostril direction; 2) type of tympanum; 3) pattern of patagium; and 4) snout with or without a series of scales forming a Y-shaped figure. The specimens were identified into nine species—D. blanfordii, D. fimbriatus, D. maculatus, D. maximus, D. melanopogon, D. obscurus, D. quinquefasciatus, D. taeniopterus and D. volans.

      PubDate: 2017-03-10T12:23:07Z
      DOI: 10.1016/j.anres.2017.02.002
       
  • Evaluation of mating type distribution and genetic diversity of three
           Magnaporthe oryzae avirulence genes, PWL-2, AVR-Pii and Avr-Piz-t, in
           Thailand rice blast isolates

    • Authors: Thanyaluk Sirisathaworn; Tanakorn Srirat; Apinya Longya; Chatchawan Jantasuriyarat
      Abstract: Publication date: Available online 22 February 2017
      Source:Agriculture and Natural Resources
      Author(s): Thanyaluk Sirisathaworn, Tanakorn Srirat, Apinya Longya, Chatchawan Jantasuriyarat
      Rice blast disease, caused by the filamentous ascomycete fungus Magnaporthe oryzae (anamorph Pyricularia oryzae), has been ranked among the most important diseases of rice. The molecular mechanisms against this fungus follow the idea of “gene-for-gene interaction”, in which a plant resistance (R) gene product recognizes a fungal avirulence (Avr) effector and triggers the defense response. However, the Avr genes have been shown to be rapidly evolving resulting in high levels of genetic diversity. This study investigated genetic diversity that is influenced by sexual recombination and mutation for the adaptation of rice blast fungus to overcome the defense response. Mating type distribution and the nucleotide sequence variation of three avirulence genes were evaluated—PWL-2, Avr-Pii and Avr-Piz-t. In total, 77 rice blast isolates collected from infected rice plants in northern, northeastern and central Thailand in 2005, 2010 and 2012, were used in the analysis with mating type and avirulence gene-specific primers. The results revealed that all the tested blast isolates belonged to the mating type MAT1-2, suggesting a lack of sexual recombination within the population. The successful rates of PWL-2, Avr-Pii and Avr-Piz-t gene-specific primer amplification were 100%, 60% and 54%, respectively. Base substitution mutation was observed in coding regions of the Avr-Pii and Avr-Piz-t genes. Although these results showed a low level of genetic diversity in Thai rice blast isolates, non-synonymous mutations did occur which revealed common mechanisms of selective pressure that are prone to adaptation of Avr genes. The information on nucleotide sequence variation and the genetic diversity of Avr genes obtained from this study could be useful for planning novel strategies in the development of rice breeding programs in Thailand.

      PubDate: 2017-02-24T16:14:22Z
      DOI: 10.1016/j.anres.2016.08.005
       
  • Molecular identification and expression profiling of a novel
           alpha2-macroglobulin gene in giant freshwater prawn (Macrobrachium
           rosenbergii, De Man)

    • Authors: Wirot Likittrakulwong; Uthairat Na-Nakorn; Supawadee Poompuang; Skorn Koonawootrittriron; Prapansak Srisapoome
      Abstract: Publication date: Available online 22 February 2017
      Source:Agriculture and Natural Resources
      Author(s): Wirot Likittrakulwong, Uthairat Na-Nakorn, Supawadee Poompuang, Skorn Koonawootrittriron, Prapansak Srisapoome
      A full-length cDNA encoding a novel alpha-2 macroglobulin (Mr-2α2M) gene in giant freshwater prawn was cloned and sequenced using rapid amplification cDNA end techniques. The Mr-2α2M was 5,194 bp and comprised a 4,560-bp open reading frame (ORF) encoding 1,519 amino acid residues. The mature Mr-2α2M protein had a calculated molecular mass of 168.8 kDa and an estimated pI of 5.14. Mr-2α2M contained significantly functional domains, including a bait region, a thiol ester motif and a receptor-binding domain, similar to the α2Ms of other species. Amino acid sequence analysis of α2Ms indicated that Mr-2α2M was most similar to the Chinese white shrimp (Fenneropenaeus chinensis) α2M isoform 2 (Fc-A2M-2), with an identity of 58.8%, and the previously identified giant freshwater prawn Mr-1α2M protein, with an identity of 43.5%. Phylogenetic analysis revealed that Mr-2α2M was more closely related to Fc-A2M-2 than Mr-1α2M, which was placed in a different subminor group. Quantitative real-time reverse-transcription polymerase chain reaction assay illustrated that Mr-2α2M mRNA transcripts were strongly detected in the subcuticular epithelium, heart, midgut and muscle but marginally detected in the hemocytes of normal prawns. Immune response analysis in prawns stimulated with Aeromonas hydrophila clearly indicated that Mr-2α2M was quickly up-regulated to high levels in hemocytes and hepatopancreas after 12 hr, in contrast to the expression pattern of Mr-1α2M. This novel α2M gene may have unique, important roles in giant freshwater prawn immune systems that differ significantly from those of the previously identified Mr-1α2M gene.

      PubDate: 2017-02-24T16:14:22Z
      DOI: 10.1016/j.anres.2017.02.001
       
  • Effects of protein levels and energy sources in total mixed ration on
           feedlot performance and carcass quality of Kamphaeng Saen steers

    • Authors: Phoompong Boonsaen; Nann Winn Soe; Wisut Maitreejet; Sutisa Majarune; Taweeporn Reungprim; Suriya Sawanon
      Abstract: Publication date: Available online 22 February 2017
      Source:Agriculture and Natural Resources
      Author(s): Phoompong Boonsaen, Nann Winn Soe, Wisut Maitreejet, Sutisa Majarune, Taweeporn Reungprim, Suriya Sawanon
      The effects of dietary protein and energy sources of a total mixed ration (TMR) were evaluated based on the performance, carcass quality and production cost of feedlot Kamphaeng Saen steers. Twenty-four Kamphaeng Saen steers were assigned according to a 2 × 2 factorial in a randomized complete block design with two factors: 1) energy sources comprised of cassava chip (cTMR) and cassava chip plus ground corn (ccTMR); and 2) crude protein (CP) levels (12%CP and 14%CP). The steers were slaughtered after being fed for 120 d. The carcass characterization and meat quality were determined at day 7 of aging. The results indicated that the average daily gain, final weight (p < 0.05), carcass weight (p = 0.06) and the profit of the steers fed the cTMR were greater compared to the ccTMR without effects on carcass characteristic and meat quality. The different levels of CP in the diet had no effects (p > 0.05) on feedlot performance, carcass characteristic and meat quality but steers fed 12%CP cTMR provided a profit. Cassava chip provided good potential to be used as an energy source in a TMR for feedlot cattle.

      PubDate: 2017-02-24T16:14:22Z
      DOI: 10.1016/j.anres.2017.02.003
       
  • In vitro propagation of the aromatic herb Strobilanthes tonkinensis Lindau

    • Authors: Niyomsri Srikun
      Abstract: Publication date: Available online 21 February 2017
      Source:Agriculture and Natural Resources
      Author(s): Niyomsri Srikun
      Strobilanthes tonkinensis Lindau. is a rare aromatic herb belonging to the family Acanthaceae. Its plant extract has been confirmed as a major source of squalene. In this research, a protocol for micropropagation was developed that can support ex situ conservation and will benefit plant material production. Shoot explants were provided from plants grown in the greenhouse and trickle irrigated for 1 mth and then effectively sterilized by shaking in NaOCl at a concentration of 1.2% for 10 min, followed by 0.6% for 15 min, which produced 70% good-growing, healthy shoots. Increasing thidiazuron and N6-benzyladenine (BA) concentrations did not promote shoot multiplication. Shoot multiplication was the best on Murashige and Skoog (MS) medium supplemented with 16 μM BA. The highest shoot number (12 shoots/explant) was obtained at 8 wk of culture. The highest shoot elongation was obtained on the medium added with 16 μM BA for 4 wk and subsequent subculturing to hormone-free MS medium for another 4 wk. High frequency rooting (21 roots/shoot) was obtained on MS medium fortified with 7.5 μM indole-3-butyric acid. Complete plantlets that were transferred to pots under greenhouse conditions produced healthy plants with 100% survival after 5 wk.

      PubDate: 2017-02-24T16:14:22Z
      DOI: 10.1016/j.anres.2016.01.006
       
  • Effects of shrimp chitosan on the physical properties of handsheets

    • Authors: Somwang Khantayanuwong; Chutatip Khemarom; Sumaida Salaemae
      Abstract: Publication date: Available online 20 February 2017
      Source:Agriculture and Natural Resources
      Author(s): Somwang Khantayanuwong, Chutatip Khemarom, Sumaida Salaemae
      The effects of shrimp chitosan as an additive were determined on the physical properties of handsheets, especially: their brightness, opacity, surface roughness and surface water absorptiveness. Commercial, hardwood, bleached kraft pulp was beaten to attain 390 mL Canadian standard freeness and then made into four sets of handsheets by mixing each part of the beaten pulp slurry with shrimp-chitosan solution to obtain 0.00%, 0.25%, 0.50% and 0.75% (oven dry weight (o.d. wt.) of pulp), respectively, in accordance with standard test methods. All the sets of handsheets were conditioned for 1 wk and then tested for their mechanical and physical properties at 50 ± 2 % relative humidity and 23 ± 1oC. The results indicated that even though there were some substantial decreases in some physical properties of shrimp-chitosan-treated handsheets (brightness, surface roughness and surface water absorptiveness), their opacity was slightly increased. Most of the mechanical properties of shrimp-chitosan-treated handsheets such as the bursting index, folding endurance, tensile index, modulus of elasticity and tensile energy absorption were greatly increased with the addition of shrimp chitosan at 0.25% o.d. wt. of pulp to 0.50% o.d. wt. of pulp. However, there was no effect on the tearing strength by adding shrimp chitosan to the handsheets.

      PubDate: 2017-02-24T16:14:22Z
      DOI: 10.1016/j.anres.2016.07.006
       
  • Physicochemical Quality and Antioxidant Changes in ‘Leb Mue Nang’
           Banana Fruit during Ripening

    • Authors: Pannipa Youryon; Suriyan Supapvanich
      Abstract: Publication date: Available online 20 February 2017
      Source:Agriculture and Natural Resources
      Author(s): Pannipa Youryon, Suriyan Supapvanich
      The physicochemical and antioxidant changes of ‘Kluai Leb Mue Nang’ banana fruit (Musa AA group) were investigated during ripening. The visual appearance, peel and pulp color, firmness, total soluble solids concentration (TSS), total acidity (TA) and bioactive compounds of the fruit at three stages of ripening (mature green, ripe and overripe) were monitored. Changes in both the peel and pulp color, texture, TSS and TA contents during banana ripening were similar to those of other banana fruits. Interestingly, the highest total antioxidants capacity and total phenols concentration were found in the ripe banana fruit. 2,2-Diphenyl-1-picrylhydrazyl radical scavenging activity remained constant and the highest total flavonoids concentration was found in the mature green fruit.

      PubDate: 2017-02-24T16:14:22Z
      DOI: 10.1016/j.anres.2015.12.004
       
  • Host-substrate preference of Theocolax elegans (Westwood) (Hymenoptera:
           Pteromalidae), a larval parasitoid of the maize weevil, Sitophilus zeamais
           (Motschulsky) (Coleoptera: Curculionidae)

    • Authors: Saruta Sitthichaiyakul; Weerawan Amornsak
      Abstract: Publication date: Available online 20 February 2017
      Source:Agriculture and Natural Resources
      Author(s): Saruta Sitthichaiyakul, Weerawan Amornsak
      The solitary parasitoid Theocolax elegans (Westwood) (Hymenoptera: Pteromalidae) was investigated attacking larvae of the maize weevil, Sitophilus zeamais (Motschulsky) (Coleoptera: Curculionidae) under laboratory conditions. Theocolax elegans parasitoids were mass reared on 21-day-old S. zeamais fed with different host substrates consisting of brown rice, maize, sorghum and wheat. The developmental time of S. zeamais was observed. The widest head capsule was recorded from S. zeamais developing in brown rice grain kernels. The head capsule width was used to determine the age of the larval instars. The sex ratio of T. elegans progeny emerging from brown rice was the same in the choice and no-choice tests (1.8:1.0 and 1.8:1.0, respectively). Female parasitoids preferred to oviposit on S. zeamais developed in brown rice grain kernels in both tests. The number of parasitoid progeny emerging from different host substrates was different in the choice and no-choice tests. The progeny of T. elegans females and males were fully winged, short winged and wingless.

      PubDate: 2017-02-24T16:14:22Z
      DOI: 10.1016/j.anres.2016.09.003
       
  • Soil Macrofauna Communities under Plant Cover in a No-till System in
           Thailand

    • Authors: Phakphoom Tantachasatid; Johnny Boyer; Sornprach Thanisawanyankura; Lucien Séguy; Kannika Sajjaphan
      Abstract: Publication date: Available online 20 February 2017
      Source:Agriculture and Natural Resources
      Author(s): Phakphoom Tantachasatid, Johnny Boyer, Sornprach Thanisawanyankura, Lucien Séguy, Kannika Sajjaphan
      The impact of no-till cropping systems with plant cover on soil macrofauna communities was assessed according to their abundance and biomass. The study was carried out in northeastern Thailand under a conventional cropping system (plow-based tillage), no-till cropping systems with plant cover (Brachiaria ruziziensis, Stylosanthes guianensis, Stylosanthes guianensis associated with Brachiaria ruziziensis, rice straw) and under a natural dipterocarp forest. Soil macrofauna populations were sampled in 2007 (June and October) during the rainy season and at a beginning of the dry season, respectively. The results revealed that in the short term, the biological compartment responded quickly to the presence of plant cover, as shown by a significant increase in soil macrofauna abundance and total biomass. The highest mean total abundance (MTA) of 4,224 indviduals/m2 at the end of planting period (October 2007) was observed under S. guianensis cover and also the highest mean total soil macrofauna biomass (MTB) of 14.63 g/m2 was observed in the forest system in the same period. However, in the system of cultivation, the highest MTB of 11.33 g/m2 was observed under S. guianensis cover. Moreover, the change rate of soil macrofauna MTA was the highest under S. guianensis cover (+751.61%) and the change rate of soil macrofauna MTB revealed that this change rate was highest in forest (+430.07%). However, in the other systems of cultivation, the highest change rate of MTB was under S. guianensis cover (+12.96%).

      PubDate: 2017-02-24T16:14:22Z
      DOI: 10.1016/j.anres.2016.08.004
       
  • Cultivation, production and management techniques of broom grass
           (Thysanolaena maxima Roxb.) in hilly areas of Bangladesh

    • Authors: Mohammod Jahangir Alam; Sayed Mohammod Zahirul Islam; Mohammod Motiar Rahman
      Abstract: Publication date: Available online 20 February 2017
      Source:Agriculture and Natural Resources
      Author(s): Mohammod Jahangir Alam, Sayed Mohammod Zahirul Islam, Mohammod Motiar Rahman
      This paper presents the results on appropriate cultivation, plantation, production and management techniques of Thysanolaena maxima for domestication at age 1–4 yr (grown 2007–2011). Rhizome cuttings were planted in research experimental plots at spacings of T1=1.0 m × 1.0 m, T2= 1.5 m × 1.5 m and T3= 2.0 m × 2.0 m in a randomized complete block design with six replications and three treatments. The results showed that the number of panicles produced was 1,048, 41,237, 78,737 and 105,094 in year 1 to year 4, respectively. The average total green weight (kg/plot) was 10.26, 632.15, 423.34 and 543.40 and the average dry weight (kg/plot) was 9.88, 287.65, 216.93 and 241.60 in year 1 to year 4, respectively. Composite soil samples were collected and the soil pH values of the surface soil from the different treatments varied from 5.1 to 5.2. There was no significant difference among the treatments in the available P and S. The available Ca, Mg and K were higher in the T3 treatment compared with the other treatments. Planting rhizome cuttings at 2.0 m × 2.0 m spacing gave the maximum broom/panicle production.

      PubDate: 2017-02-24T16:14:22Z
      DOI: 10.1016/j.anres.2016.08.006
       
  • FM - TOC

    • Abstract: Publication date: November 2016
      Source:Agriculture and Natural Resources, Volume 50, Issue 6


      PubDate: 2017-02-11T16:59:08Z
       
  • FM - TOC

    • Abstract: Publication date: September 2016
      Source:Agriculture and Natural Resources, Volume 50, Issue 5


      PubDate: 2017-02-11T16:59:08Z
       
  • Impacts of sodium chlorite combined with calcium chloride, and calcium
           ascorbate on microbial population, browning, and quality of fresh-cut rose
           apple

    • Authors: Sunthon Mola; Apiradee Uthairatanakij; Varit Srilaong; Sukunya Aiamla-or; Pongphen Jitareerat
      Abstract: Publication date: Available online 17 January 2017
      Source:Agriculture and Natural Resources
      Author(s): Sunthon Mola, Apiradee Uthairatanakij, Varit Srilaong, Sukunya Aiamla-or, Pongphen Jitareerat
      Microbial activity and browning were minimized and fresh-cut rose apple quality was maintained using sodium chlorite (SC) combined with calcium chloride (CC) and calcium ascorbate (CaAs) and by investigating the optimal concentration and dipping time of SC for inhibiting microbial activity and browning. Fresh-cut rose apple samples were dipped in SC solution at 100 mg/L and 200 mg/L for 1 min and 3 min, with filtered water and non-dipped samples as controls. All samples were kept at 4 ± 2°C for 9 d. The results showed that 200 mg/L SC for 3 min was the best treatment to inhibit microbial growth (total bacteria, yeast and molds, E. coli and coliforms), delay browning and polyphenol oxidase (PPO) activity of fresh-cut rose apples, but could not maintain the fresh firmness. A firmness experiment was conducted by dipping fresh-cut rose apples in 200 mg/L SC and in 200 mg/L SC combined with 20 g/L CC and 20 g/L CaAs (SC+CC+CaAs) for 3 min before storage at 4 ± 2°C for 9 d. Samples immersed in filtered water were used as the control. The combined treatment delayed microbial contamination and browning by reducing the PPO activity and the accumulation of phenolic content, and maintained the fresh firmness of fresh-cut rose apples. Thus, the combination treatment of SC+CC+CaAs solution can protect fresh-cut rose apples against microbial contamination and delay browning and maintain firmness.

      PubDate: 2017-01-23T05:37:54Z
      DOI: 10.1016/j.anres.2016.12.001
       
  • Phylogenetic variation of the green muscadine fungus, Metarhizium
           anisopliae (Metchnikoff) Sorokin, and its virulence to larvae of the
           sugarcane longhorn stem borer, Dorysthenes buqueti Guerin (Coleoptera:
           Cerambycidae)

    • Authors: Nichanun Kernasa; Sopon Uraichuen; Naoto Kamata
      Abstract: Publication date: Available online 11 January 2017
      Source:Agriculture and Natural Resources
      Author(s): Nichanun Kernasa, Sopon Uraichuen, Naoto Kamata
      The sugarcane longhorn stem borer (SLSB), Dorysthenes buqueti Guerin (Coleoptera: Cerambycidae) has recently become a serious insect pest of sugarcane in Thailand and effective biological control agent must be evaluated. The green muscadine fungus (GMF), Metarhizium anisopliae (Metchnikoff) Sorokin is a species complex of entomopathogenic fungi, which includes many cryptic subspecies and species. It has been reported that GMF infects and kills the sugarcane longhorn stem borer (SLSB), Dorysthenes buqueti Guerin, so that GMF is a possible biological control agent of SLSB. Molecular analyses were conducted to gain a better understanding of the taxonomic position of GMF Thai strains. Virulence bioassays were carried out on four isolates of GMF to 5th–9th instars of SLSB. This study revealed that an isolate from Khon Kaen (KK) showed the highest virulence to 5th–9th instars of SLSB. In biological control, an aqueous suspension containing 1 × 108 conidia/mL of KK isolate was best from the viewpoint of a tradeoff between the economic cost/benefit of the mass production cost and the consequent mortality after application. Comparing suspensions containing 1 × 108 conidia/mL with those containing 1 × 1013 conidia/mL, 100,000 times as much quantity of suspension can be obtained from the same quantity of conidia, though the difference in the D. buqueti mortality was relatively small. Six isolates of GMF from SLSB in Thailand were likely a cryptic species, although further molecular analysis using factor 1-alpha sequences is needed.

      PubDate: 2017-01-14T05:13:39Z
      DOI: 10.1016/j.anres.2016.07.001
       
  • Seed vigor classification using analysis of mean radicle emergence time
           and single counts of radicle emergence in rice (Oryza sativa L.) and mung
           bean (Vigna radiata (L.) Wilczek)

    • Authors: Damrongvudhi Onwimo; Wanchai Chanmprasert; Petchlada Changsee; Thunyapuk Rongsangchaichareon
      Abstract: Publication date: Available online 9 January 2017
      Source:Agriculture and Natural Resources
      Author(s): Damrongvudhi Onwimo, Wanchai Chanmprasert, Petchlada Changsee, Thunyapuk Rongsangchaichareon
      The radicle emergence (RE) test for seed vigor classification is an ingenious protocol that will lead to a fast and reliable automated procedure for verifying seed quality using image analysis. Nevertheless, the success of this protocol has never been described in rice and mung bean that are global staple foods. This experiment analyzed the correlation between RE (2 mm in length) and normal seedlings (NS) during a germination test of rice and mung bean. In total, 12 samples using four cultivars of each species were obtained from different locations and production years. In addition to the germination test, an accelerated ageing (AA) test and an electrical conductivity (EC) test were analyzed. The results revealed that the pattern of the cumulative germination curve of RE and NS coincided but the curve for NS was longer than for RE (p ≤ 0.05). There was no significant difference in the variance of the germination time between RE and NS of rice but there was a significant difference for mung bean. The vigor levels of the rice seed classified by single counts of RE at 110 hr after set to germinate (HASG) conformed to the result of single counts of NS at 200 HASG and the result of the AA test. However, these classifications disagreed with the result derived from the EC test. In contrast, the mung bean vigor level classified by single counts of RE, NS, the AA test and the EC test did not relate well with each other. In conclusion, it is possible to develop the automated procedure for verifying rice seed quality using image analysis via a single count of RE.

      PubDate: 2017-01-14T05:13:39Z
      DOI: 10.1016/j.anres.2016.12.003
       
  • Diversity and uses of Zingiberaceae in Nam Nao National Park, Chaiyaphum
           and Phetchabun provinces, Thailand, with a new record for Thailand

    • Authors: Surapon Saensouk; Piyaporn Saensouk Pattana Pasorn Pranom Chantaranothai
      Abstract: Publication date: Available online 4 January 2017
      Source:Agriculture and Natural Resources
      Author(s): Surapon Saensouk, Piyaporn Saensouk, Pattana Pasorn, Pranom Chantaranothai
      Three tribes, 12 genera and 38 species of the ginger family (Zingiberaceae) along five routes in Nam Nao National Park were surveyed between January 2012 and December 2013 to determine their diversity, ecological data, phenology, uses and conservation status. The highest diversity was found in the tribe Zingibereae (6 genera and 21 species), of which the genera Curcuma and Zingiber comprised the highest number species (eight species each). A species key was constructed based on morphology. The ginger family was found in four forest-types—deciduous dipterocarp forest, mixed deciduous forest, dry evergreen forest and pine forest. The most flowering bloom of the ginger family in Nam Nao National Park was during March to August and the most fruiting bloom was during June to September. The popular uses of Zingiberaceae were as a food, spice, in medicine, as ornamentation and in rituals. Eight species have been evaluated as of least concern and are presented in theIUCN Red List,while two rare species were reported in Thailand Red Data: Plants, while six rareZingiberaceae species were identified based on the evaluation criteria of Saensouk (2011). Four species were endemic to Thailand. Moreover,Etlingerayunnanensis (T. L. Wu & S. J. Chen) R. M. Smith was a new record for Thailand.

      PubDate: 2017-01-05T23:59:40Z
       
  • Leaf Blade Anatomy Characteristics of the Genus Amorphophallus Blume ex
           Decne. in Thailand

    • Authors: Duangchai Sookchaloem; Oraphan Sungkajanttranon; Sahanat Petchsri; Suchai Horadee; Chaiya Huayhongthong; Amphon Vanapanich; Chanu Wongsawaddiwattana
      Abstract: Publication date: Available online 3 January 2017
      Source:Agriculture and Natural Resources
      Author(s): Duangchai Sookchaloem, Oraphan Sungkajanttranon, Sahanat Petchsri, Suchai Horadee, Chaiya Huayhongthong, Amphon Vanapanich, Chanu Wongsawaddiwattana
      Twenty-three species of Amorphophallus Blume ex Decne. were collected from several areas of Thailand between November 2008 and May 2012, and grown under greenhouse conditions with 70% sunlight. Leaf blade anatomy characteristics were studied using free hand section and epidermal peeled slides before being observed using a light transmission microscope from May 2011 to November 2013. The results showed the different anatomical characteristics of each species. The midribs in cross section were curved, or had 5, 6, 7, 8 or 12 lobes. Vascular bundles numbered 5, 6, 7, 8, 9, 10, 13, 15, 16 or 23. The upper and lower epidermal cell walls had three subtypes—straight-sided, undulate or sinuous anticlinal. Both sides of the epidermal cell wall can be similar or can vary in each species. There were 1, 2, 3, 4 or 6 subsidiary cells along both sides of paired guard cells and the stomatal type was paracytic and stomatal subtypes varied from species to species, being brachyparacytic, hemiparacytic, amphibrachyparacytic, paratetracytic or parahexacytic. The stomatal number was 16–104/mm2 of leaf area and varied with the leaf gloss and leaf texture of each species.

      PubDate: 2017-01-05T23:59:40Z
      DOI: 10.1016/j.anres.2016.09.002
       
  • Analysis of cracking potential and micro-elongation of linerboard

    • Authors: Supattra Panthai; Tongchai Patchiyo; Pratuang Puthson; Phichit Somboon
      Abstract: Publication date: Available online 3 January 2017
      Source:Agriculture and Natural Resources
      Author(s): Supattra Panthai, Tongchai Patchiyo, Pratuang Puthson, Phichit Somboon
      Folding cracks of linerboards in relation to their micro elongation and the forming conditions were studied using an industrial linerboard machine with a top former. The experiments consisted of the study of various forming conditions by manipulating the jet/wire speed ratio to produce linerboard with differences in fiber structures that were related to the cracked and uncracked products. The results showed that changes to the jet/wire speed ratio of about 0.01–0.02 to improve the tested folding endurance in the machine direction potentially produced folding cracks in the linerboard, which indicated an ambiguous interpretation of the foldability tests. The delaminated cracked layers were found to have a high folding endurance and tensile strength, while the decrease in the micro-elongation formulated in this study was found to be related to cracking. A lower micro-elongation of about 350–500 μm/N·g was found in a range of products with folding cracks.

      PubDate: 2017-01-05T23:59:40Z
      DOI: 10.1016/j.anres.2016.08.003
       
  • Larval preference and performance of the green lacewing, Plesiochrysa
           ramburi (Schneider) (Neuroptera: Chrysopidae) on three species of cassava
           mealybugs (Hemiptera: Pseudococcidae)

    • Authors: Charida Sattayawong; Sopon Uraichuen; Wiwat Suasa-ard
      Abstract: Publication date: Available online 3 January 2017
      Source:Agriculture and Natural Resources
      Author(s): Charida Sattayawong, Sopon Uraichuen, Wiwat Suasa-ard
      The green lacewing, Plesiochrysa ramburi (Schneider) (Neuroptera: Chrysopidae), is a dominant predatory insect in cassava fields. The suitability of different cassava mealybug species as prey for Pl. ramburi is important information for mass rearing in the laboratory. Phenacoccus manihoti Matile-Ferrero, Phenacoccus madeirensis Green and Pseudococcus jackbeardsleyi (Gimpel & Miller) were compared to determine their potential as prey for Pl. ramburi larvae by testing the green lacewing’s preference and performance. Non-choice tests showed that Pl. ramburi larva could feed on all three cassava mealybug species. Choice tests showed that the 1st and 2nd instars of Pl. ramburi preferred Ph. manihoti and the 3rd instars preferred Ph. madeirensis. However, life table parameters showed that the highest net reproduction number (19.1967) and gross reproductive rate (46.0156, females/female/generation) occurred when Pl. ramburi fed on Ps. jackbeardsleyi. This indicates that Ps. jackbeardsleyi is the most suitable diet for the mass rearing of Pl. ramburi to allow releases in integrated pest management programs.

      PubDate: 2017-01-05T23:59:40Z
      DOI: 10.1016/j.anres.2016.07.002
       
  • Variability, heritability, character association, path analysis and
           morphological diversity in snake gourd

    • Authors: ASM Mahbubur Rahman Khan; Rabeya Eyasmin; M.Harunur Rashid; Sheikh Ishtiaque; Apurbo Kumar Chaki
      Abstract: Publication date: Available online 3 January 2017
      Source:Agriculture and Natural Resources
      Author(s): ASM Mahbubur Rahman Khan, Rabeya Eyasmin, M.Harunur Rashid, Sheikh Ishtiaque, Apurbo Kumar Chaki
      Genetic variability, heritability and path coefficient analysis were studied in 21 genotypes of snake gourd. The phenotypic coefficient of variations was found slightly higher than the genotypic coefficient of variations for all characters studied, indicating that the apparent variation is not only genetic but also influenced by the growing environment in the expression of the traits. The genotypic coefficient of variation was high for the fruit yield, number of fruits per vine, length of fruit and single fruit weight. High heritability coupled with high-to-moderate genetic advance was estimated for all characters studied. Correlation studies revealed that the fruit yield had a significant, positive correlation with the number of fruits per vine, length of fruit and single fruit weight. Importantly, more than 90% of the genotypic total variation was contributed by the characters included in the path analysis. The highest, direct, positive effect was recorded for the number of fruits per vine. The divergence value for cluster analysis indicated that the genotypes from clusters II and III had the highest inter-cluster distance and were expected to provide high heterosis in hybridization and to show wide variability in genetic architecture. The selection of high yielding genotypes should give emphasis to the number of fruits per vine, length of fruit and single fruit weight.

      PubDate: 2017-01-05T23:59:40Z
      DOI: 10.1016/j.anres.2016.07.005
       
  • Comparative effectiveness of monomolecular surface film on Aedes aegypti
           (L.) and Anopheles minimus (Theobald) (Diptera: Culicidae)

    • Authors: Chutipong Sukkanon; Rapeeporn Yaicharoen; Warunee Ngrenngarmlert
      Abstract: Publication date: Available online 3 January 2017
      Source:Agriculture and Natural Resources
      Author(s): Chutipong Sukkanon, Rapeeporn Yaicharoen, Warunee Ngrenngarmlert
      Silicone-based surfactants have become of interest for mosquito control in Thailand. When this non-ionic surfactant is applied in mosquito habitats, a monomolecular film (MMF) forms on the water surface and disrupts the ability of larvae and pupae to breathe. In this study, a laboratory bioassay was conducted to determine the mosquito control potential of MMF against Aedes aegypti (L.) and Anopheles minimus (Theobald), and to compare its efficacy with other larvicides consisting of temephos (an organophosphate), Bacillus thuringiensis israelensis (Bti) and pyriproxyfen (an insect growth regulator). It was determined that the percentage mortality of Ae. aegypti and An. minimus treated with MMF at a recommended dosage of 1 mL/m2 was significantly greater in pupae (99.2% and 100%, respectively) than old stage larvae (L3-L4, age 46 d; 70.8% and 97.5%, respectively) and young stage larvae (L1-L2, age 1–2 d; 8.3% and 58.0%, respectively). Small larvae and prolonged stage transformations indicated MMF growth inhibition activity. MMF also displayed oviposition deterrence behavior and caused female mosquitoes to drown during egg laying. In comparison, temephos and Bti were highly effective in larval control while pyriproxyfen and MMF provided excellent control effects against the pupal stage. Based on the results, MMF showed promise as an alternative larvicide for mosquito control in Thailand. Further studies on the environmental effects of MMF are needed.

      PubDate: 2017-01-05T23:59:40Z
      DOI: 10.1016/j.anres.2016.07.003
       
  • Sexual dimorphism and geographic variation of Calotes versicolor
           (Squamata: Agamidae) in northern and southern Thailand

    • Authors: Arpapan Prakobkarn; Kumthorn Thirakhupt; Thongchai Ngamprasertwong
      Abstract: Publication date: Available online 3 January 2017
      Source:Agriculture and Natural Resources
      Author(s): Arpapan Prakobkarn, Kumthorn Thirakhupt, Thongchai Ngamprasertwong
      The garden fence lizard, Calotes versicolor, is a common and widely distributed lizard throughout the Middle to Far-East including Indo-Asia and Thailand. Although this species displays variation in its morphology throughout its range, such variation has not been examined in Thailand. Thus, 20 adult lizards were examined from each of three geographically distinct populations in each of northern and southern Thailand to document any sexual and regional variation. Differentiation in characters between sexes and populations were tested using ANCOVA and principle component analysis for the mensural characters, the Mann-Whitney U-test for the meristic characters and the χ2 test for coloration. Sexual dimorphism was found to occur in all populations. Males have a larger relative head size and longer relative limb lengths, whilst females exhibit a longer relative trunk length. The scalation of males was also more prominent than in females. Females in both the southern and northern Thailand populations have brighter patterns on the paired dorsolateral stripe, forearm stripe and paired nuchal spots than the corresponding males. Regional differentiation in mensural characters and coloration was more prominent in males, but no clustering of regional populations was found. Some meristic characters were congruent with regional variation. Males in the southern populations have a larger relative head size and longer relative limb lengths than those from the northern populations, but these differences were not found in females. Males in the southern populations have brighter patterns in dark bands on the trunk and colored throat patch than those in the northern populations.

      PubDate: 2017-01-05T23:59:40Z
      DOI: 10.1016/j.anres.2016.07.004
       
  • Aonchotheca yannickchavali n. sp. (Nematoda: Capillariidae) in Bandicota
           indica (Bechstein, 1800) and Bandicota savilei (Thomas, 1916) (Rodentia:
           Muridae) collected from Thailand

    • Authors: Marina Veciana; Kittipong Chaisiri; Serge Morand; Alexis Ribas
      Abstract: Publication date: Available online 3 January 2017
      Source:Agriculture and Natural Resources
      Author(s): Marina Veciana, Kittipong Chaisiri, Serge Morand, Alexis Ribas
      During previous surveys of helminths in rodents from Southeast Asia, an unnamed species of Aonchotheca was recovered from the stomach of several rodent species. In the present study, the description of the new species Aonchotheca yannickchavali n. sp. is provided based on both female and male specimens collected from two bandicoot rat species (Bandicota indica and B. savilei) from Thailand (Buriram and Nan provinces). This nematode can be separated from other known Aonchotheca found in rodents by its microhabitat in the host and by the size of the spicules in males and the vulvar appendage in females.

      PubDate: 2017-01-05T23:59:40Z
      DOI: 10.1016/j.anres.2016.04.009
       
  • Rainfall prediction and meteorological drought analysis in the Sakae Krang
           River basin of Thailand

    • Authors: Patana Wichitarapongsakun; Charoon Sarin; Pantip Klomjek; Sombat Chuenchooklin
      Abstract: Publication date: Available online 3 January 2017
      Source:Agriculture and Natural Resources
      Author(s): Patana Wichitarapongsakun, Charoon Sarin, Pantip Klomjek, Sombat Chuenchooklin
      Rainfall was predicted and used to analyze the severity levels of meteorological drought in the Sakae Krang River basin. Three forecasting models based on the Time Series Prediction technique, Single Moving Average, Simple Exponential Smoothing and Double Exponential Smoothing (Holt’s model) were used to predict rainfall using the data collected from five rain gauge stations between 1970 and 2014. The minimum mean percentage error (MPE) score was used to indicate the accuracy of prediction. A standardized precipitation index (SPI) was used to indicate the drought severity levels in the Sakae Krang River basin between 1970 and 2015. The Simple Exponential Smoothing model produced the most accurate rainfall prediction followed by Double Exponential Smoothing (Holt’s model) and the Single Moving Average model with MPE scores of 28%, 31% and 36%, respectively. The drought analysis results indicated that from 1970 to 2014, there was no clear trend in meteorological drought in the Sakae Krang River basin. In 2015, the meteorological drought severity level analysis of the sub-basins of the Sakae Krang River basin was graded as moderate drought for the lower part of Mae Nam Sakae Krang 1 and mild drought for Nam Mae Wong, the lower part of Mae Nam Sakae Krang 2, Khlong Pho and Huai Thap Salao with SPI scores of -1.01, -0.97, -0.91, -0.57 and -0.32, respectively.

      PubDate: 2017-01-05T23:59:40Z
      DOI: 10.1016/j.anres.2016.05.003
       
  • Effects of soil moisture conservation practice, irrigation and
           fertilization on Jatropha curcas

    • Authors: Aran Phiwngam; Somchai Anusontpornperm; Suphicha Thanachit; Worachart Wisawapipat
      Abstract: Publication date: Available online 3 January 2017
      Source:Agriculture and Natural Resources
      Author(s): Aran Phiwngam, Somchai Anusontpornperm, Suphicha Thanachit, Worachart Wisawapipat
      A field experiment was conducted on an Ultic Haplustalf at the Kanchanaburi Research Station, Muang district, Kanchanaburi province, western Thailand between July 2011 and June 2012. Split plots in a randomized complete block design with four replications were employed, having eight main plots (soil moisture conservation practice and irrigation, W1–W8) and 2 sub plots (fertilization, F1 and F2). J. curcas (KUBP 78-9 Var.), having been planted at 2 × 2 m spacing, was aged 2 yr when the experiment was commenced. The highly significantly heaviest 100-seed weight of 42 g was obtained 1 mth after water irrigation which had been applied at the rate of 16 L/plant, particularly in the treatment with crop residue mulching (W8) but there were no significant differences among the other treatments where irrigation had been applied (W5–W7). Fertilization and a combination between different fertilizers and soil moisture conservation schemes plus irrigation showed no different effect on the weight of 100 seeds throughout the year of measurement. Growing J. curcas with drip-irrigated water at the rate of 16 L/plant applied every 2 d and crop residue mulching (W8) significantly gave the highest seed yield of 1,301.3 kg/ha at 15% moisture content. There were no significant differences among the seed yields from the plots applied with the same amount of irrigated water but with no mulching (W7) and half that amount of irrigated water with crop residue mulching (W6), producing yields of 1,112.0 kg/ha and 1,236.3 kg/ha, respectively. Three-year-old J. curcas gave inferior seed yield when grown with no irrigated water supply (W1–W4). The application of 50-150-150 kg/ha of N-P2O5-K2O significantly induced a higher amount of seed yield (933.9 kg/ha) than did the addition of 93.75-93.75-93.75 kg/ha of N-P2O5-K2O (786.3 kg/ha). The interaction between soil moisture conservation plus irrigation and fertilizer was clear. Applying 50-150-150 kg/ha of N-P2O5-K2O together with water irrigation at the rate of 16 L/plant (W7F2) significantly promoted the greatest seed yield of 1,415.2 kg/ha. However, irrigated water can be reduced to 8 L/plant in combination with crop residue mulching and the addition of 50-150-150 kg/ha of N-P2O5-K2O (W6F2) and the plants still performed well, producing a seed yield of 1,356.4 kg/ha. In addition, with no irrigation, none of the moisture conservation practices (W2–W4) showed any significant effects regardless of the different fertilizers applied.

      PubDate: 2017-01-05T23:59:40Z
      DOI: 10.1016/j.anres.2016.10.006
       
  • Proximate compositions and bioactive compounds of edible wild and
           cultivated mushrooms from Northeast Thailand

    • Authors: Amporn Srikram; Suriyan Supapvanich
      Abstract: Publication date: Available online 1 January 2017
      Source:Agriculture and Natural Resources
      Author(s): Amporn Srikram, Suriyan Supapvanich
      Mushrooms are known as an excellent source of nutrients including macronutrients and bioactive compounds. Nutritional values were investigated involving proximate analysis, total antioxidant capacity (TAC), total phenol content (TPC) and total flavonoid content (TFC) of 10 edible wild mushroom species—Amanita calyptroderma Ark. et al., Amanita princeps Corner et Bas, A., Astraeus odoratus, Heimiella retispora (Pat. et. Bak.) Boedijn., Mycoamaranthus cambodgensis (Pat.) Trappe, Russula alboareolata Hongo, Russula cyanoxantha Schaeff.ex.Fr., Russula emetic (Schaeff. ex Fr.) S.F.Gray., Russula virescens (Schaeff.) fr., Termitomyces clypeatus Heim—and five cultivated mushroom species—Auricularia auricula-judae, Lentinus polychrous Lev., Lentinus squarrosulus Mont., Pleurotus sajor-caju (Fr.) Sing, Volvariella vovacea (Bull. Ex.Fr.) Sing. From the proximate analysis, the moisture contents of both wild and cultivated mushrooms ranged from 84.15% fresh weight (FW) to 90.21% FW. The ash, crude protein, fat, crude fiber and carbohydrate contents of both wild and cultivated mushrooms were in the dry weight ranges 2.56−13.96%, 11.16−50.29%, 1.43−21.94%, 2.11−38.11% and 9.56−59.73%, respectively, and the contents of macronutrients in the mushrooms varied by variety. Wild mushrooms had a high fiber content compared to cultivated mushrooms. The contents of biologically active compounds of both wild and cultivated mushrooms also varied depending on the variety. Values for the TAC, TPC and TFC of wild mushrooms were higher than those of cultivated mushrooms. In conclusion, the proximate analysis for both wild and cultivated mushrooms was variety dependent and wild mushrooms contained a higher fiber content and more biologically active compounds than cultivated mushrooms.

      PubDate: 2017-01-05T23:59:40Z
      DOI: 10.1016/j.anres.2016.08.001
       
  • Induction of pathogenesis-related gene 1 (PR-1) by acibenzolar-s-methyl
           application in pineapple and its effect on reniform nematodes
           (Rotylenchulus reniformis)

    • Authors: Buncha Chinnasri; Tamas Borsics; David A. Christopher; Brent S. Sipes
      Abstract: Publication date: Available online 29 December 2016
      Source:Agriculture and Natural Resources
      Author(s): Buncha Chinnasri, Tamas Borsics, David A. Christopher, Brent S. Sipes
      The induction of systemic acquired resistance (SAR) in pineapples (Ananus comosus) was studied as shown by the up-regulation of the PR-1 gene (the SAR marker) and examination of the SAR effect on the reniform nematode, Rotylenchulus reniformis. Real-time polymerase chain reaction assay was performed using degenerate primers designed from the PR-1 genes of several monocotyledonous (monocots) and dicotyledonous (dicots) plants. A 266 bp cDNA band was evident only in plants treated with the SAR inducer, acibenzolar-s-methyl. This 266 bp cDNA was sequenced and found to be highly homologous to a number of PR-1 genes from monocots. In addition, the amino acid sequence deduced from the 266 bp cDNA showed a high identity to PR-1 proteins from both monocots and dicots. Therefore, it was highly likely that this cloned fragment was part of the A. comosus PR-1 gene, indicating that A. comosus has an SAR pathway. The time course of PR-1 expression was studied. The results showed that PR-1 induction was initiated as early as 1 d after acibenzolar application and continued through 3 wk thereafter. The effect of SAR on the nematodes, Rotylenchulus reniformis, in pineapples was also elucidated. The results showed that the reproduction of nematodes on the pineapples treated with 100 mg/L or 200 mg/L was 55% lower than that on pineapples treated with 0 mg/L or 50 mg/L. Nematode reproduction on pineapples treated with the same concentration but inoculated at different times was not significantly different (p > 0.05).

      PubDate: 2017-01-05T23:59:40Z
      DOI: 10.1016/j.anres.2016.04.008
       
  • Effects of stocking density on feather pecking and aggressive behavior in
           Thai crossbred chickens

    • Authors: Xin Huo; Pongchan Na-Lampang
      Abstract: Publication date: Available online 27 December 2016
      Source:Agriculture and Natural Resources
      Author(s): Xin Huo, Pongchan Na-Lampang
      The influence of stocking density on feather pecking and aggressive behavior of Thai crossbred chickens was investigatedfrom age 4–12 wk. In total,900 day-old mixed sex Thai crossbred chickens were assigned to three replicates of 100 birds per pen, at stocking densities of 8birds/m2, 12 birds/m2and 16 birds/m2, respectively. The frequency of feather pecking, the number of pecks per bout, pecking intensity and the frequency of aggressive behavior were recorded once a week by scanning all the birds in the pen. It was found that the stocking density had no effect on the frequencies of feather pecking on body areas except on the wings area (p<0.05). The stocking density had no effect on the occurrence of 1–4 pecks per bout or 5–9 pecks per bout. The stocking density had no significant influence on the pecking, pinching or plucking intensity, except on the intensity of pulling. The different types of aggressive behavior such as stand-off, fight, threat, leap, chase, avoidance andpeck were not affected by the stocking density. In conclusion, stocking density did not affect the feather pecking activities and aggressive behavior of Thai crossbred chickens. However, further work is suggested with a larger number of replications to establish that there is no effect of stocking density, as the power of this study was low.

      PubDate: 2017-01-05T23:59:40Z
      DOI: 10.1016/j.anres.2016.04.006
       
  • Predatory thrips species composition, their prey and host plant
           association in Northern Thailand

    • Authors: Samaporn Saengyot
      Abstract: Publication date: Available online 27 December 2016
      Source:Agriculture and Natural Resources
      Author(s): Samaporn Saengyot
      A survey of predatory thrips, their prey and associated host plants was carried out from February 2013 to February 2014 in Chiang Rai, Phayao, Chiang Mai, Lamphun and Lampang provinces in Northern Thailand. The survey revealed 10 species of predatory thrips in 5 genera in the Family Phlaeothripidae. They were: Aleurodothrips fasciapennis (Franklin), Androthrips flavipes Schmutz, Androthrips ramachandrai Karny, Karnyothrips flavipes (Jones), two indeterminate Karnyothrips sp.1 and sp.2, Leptothrips sp., Podothrips lucasseni (Krüger), and two indeterminate Podothrips sp. 1, and sp. 2. Eleven species of insect and mite pests serving as prey were found associated with 16 species of host plants in 13 families. They were: scale insects, Coccus viridis (Green) and two Coccus spp.; spiraling whitefly, Aleurodicus dispersus Russell; unidentified gall-making Hemiptera; coffee berry borer, Hypothenemus hampei (Ferrari); unidentified crambid lepidopterous larvae; Kanzawa spider mite, Tetranychus kanzawai Kishida; santol gall mite, Eriophyes sandorici Nelepa; litchi rust mite, Aceria litchii (Keifer); and bamboo green mite, Aponychus corpuzae Rimando. The findings from this investigation could provide basic information necessary for further investigation in the use of some of these predatory thrips as biological control agents of insect and mite pests of economic importance in Thailand.

      PubDate: 2017-01-05T23:59:40Z
      DOI: 10.1016/j.anres.2015.10.002
       
  • Antidiabetic and antioxidant activities of seed extract from Leucaena
           leucocephala (Lam.) de Wit

    • Authors: Pichaya Chowtivannakul; Buavaroon Srichaikul; Chusri Talubmook
      Abstract: Publication date: Available online 27 December 2016
      Source:Agriculture and Natural Resources
      Author(s): Pichaya Chowtivannakul, Buavaroon Srichaikul, Chusri Talubmook
      Leucaena leucocephala (Lam.) de Wit has been used for various purposes such as treatment of stomach diseases, facilitation of abortion, contraception and the treatment of diabetes. Scientific information about this plant is limited. Therefore, this study investigated the antidiabetic and antioxidant activities and also the toxicity of seed extract from L. leucocephala (LLSE). Antidiabetic activity testing was carried out by giving LLSE at an oral dose of 250 mg/kg body weight to streptozotocin-induced diabetic rats daily for 6 wk. The results revealed that LLSE significantly (p<0.05) reduced the fasting blood glucose and the blood chemistry consisting of: albumin, alkaline phosphatase (ALP) and total protein and red blood cells in the diabetic-treated rats compared to those in diabetic-untreated rats. LLSE slightly increased the serum insulin level in the diabetic-treated rats. Using 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay showed that LLSE exhibited relatively low antioxidant activity with the concentration of a sample required for 50% scavenging of the DPPH free radical of 839.56 ± 37.34 μg/mL compared to vitamin C (1.48 ± 0.07 μg/mL). A spectrophotometric technique, based on the Folin-Ciocalteau reagent, revealed that the total phenolic compound contents of LLSE were 37.38 ± 0.49 mg GAE/g. LLSE at doses of 1,000 mg/k body weight, 1,500 mg/k body weight and 2,000 mg/k body weight did not produce any symptoms of acute toxicity or mortality in the rats. These results indicated that seed extract from L. leucocephala has antidiabetic and antioxidant activities. The antioxidant activity is likely due to the phenolic content. An application of this extract should be considered as it can affect renal function by reducing the levels of albumin, ALP and total protein.

      PubDate: 2017-01-05T23:59:40Z
      DOI: 10.1016/j.anres.2016.06.007
       
  • Antennal sensilla morphology of Theocolax elegans (Westwood) (Hymenoptera:
           Pteromalidae), a larval parasitoid of the maize weevil, Sitophilus zeamais
           (Motschulsky) (Coleoptera: Curculionidae)

    • Authors: Supawan Kongjaroen Namikawa; Weerawan Amornsak
      Abstract: Publication date: Available online 26 December 2016
      Source:Agriculture and Natural Resources
      Author(s): Supawan Kongjaroen Namikawa, Weerawan Amornsak
      The antennal sensilla of Theocolax elegans (Westwood) (Hymenoptera: Pteromalidae), a larval parasitoid of the maize weevil, Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae) were investigated using scanning electron microscopy. The antennal sensilla of female and male wasps appeared similar in shape and types. Antennal sensilla in female and male T. elegans were classified into four groups: basiconic capitate peg sensilla, chaetica sensilla (types 1–5), placoid sensilla and trichoid sensilla. Chaetica sensilla type 5 were found only on the female antenna. These four groups of antennal sensilla probably function as proprioceptors, hygro- and thermo- mechanoreceptors or contact chemoreceptors. The receptors are involved in host examination, host discrimination, host recognition and host location by female and male T. elegans.

      PubDate: 2017-01-05T23:59:40Z
      DOI: 10.1016/j.anres.2015.12.003
       
 
 
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