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  Subjects -> AGRICULTURE (Total: 803 journals)
    - AGRICULTURAL ECONOMICS (70 journals)
    - AGRICULTURE (569 journals)
    - CROP PRODUCTION AND SOIL (92 journals)
    - DAIRYING AND DAIRY PRODUCTS (27 journals)
    - POULTRY AND LIVESTOCK (45 journals)

AGRICULTURE (569 journals)                  1 2 3 | Last

Showing 1 - 200 of 263 Journals sorted alphabetically
Aceh International Journal of Science and Technology     Open Access   (Followers: 2)
Acta agriculturae Slovenica     Open Access   (Followers: 4)
Acta Agrobotanica     Open Access   (Followers: 5)
Acta Agronomica Hungarica     Full-text available via subscription   (Followers: 2)
Acta Agronomica Sinica     Full-text available via subscription   (Followers: 5)
Acta Biologica Sibirica     Open Access  
Acta Scientiarum. Animal Sciences     Open Access   (Followers: 3)
Acta Scientiarum. Technology     Open Access   (Followers: 3)
Acta Technologica Agriculturae     Open Access   (Followers: 1)
Acta Universitatis Sapientiae, Alimentaria     Open Access   (Followers: 1)
Advances in Agriculture     Open Access   (Followers: 7)
Advances in Agriculture & Botanics     Open Access   (Followers: 14)
Advances in Agronomy     Full-text available via subscription   (Followers: 15)
Advances in Horticultural Science     Open Access  
Advances in Life Science and Technology     Open Access   (Followers: 14)
Africa Research Bulletin: Political, Social and Cultural Series     Hybrid Journal   (Followers: 11)
African Journal of Agricultural Research     Open Access   (Followers: 3)
African Journal of Food Science     Open Access   (Followers: 5)
African Journal of Food, Agriculture, Nutrition and Development     Open Access   (Followers: 18)
African Journal of Range & Forage Science     Hybrid Journal   (Followers: 6)
Agra Europe     Full-text available via subscription   (Followers: 3)
Agribusiness : an International Journal     Hybrid Journal   (Followers: 3)
Agric     Open Access  
Agricultura     Open Access   (Followers: 1)
Agricultura Tecnica     Open Access   (Followers: 5)
Agricultura Tropica et Subtropica     Open Access   (Followers: 1)
Agricultura, Sociedad y Desarrollo     Open Access   (Followers: 1)
Agricultural Advances     Open Access   (Followers: 3)
Agricultural and Food Science     Open Access   (Followers: 19)
Agricultural Commodities     Full-text available via subscription  
Agricultural Economics     Hybrid Journal   (Followers: 45)
Agricultural History     Full-text available via subscription   (Followers: 168)
Agricultural History Review     Full-text available via subscription   (Followers: 10)
Agricultural Research     Hybrid Journal   (Followers: 3)
Agricultural Science     Open Access   (Followers: 2)
Agricultural Science     Full-text available via subscription   (Followers: 5)
Agricultural Sciences     Open Access   (Followers: 7)
Agricultural Systems     Hybrid Journal   (Followers: 31)
Agricultural Water Management     Hybrid Journal   (Followers: 42)
Agriculture     Open Access   (Followers: 8)
Agriculture & Food Security     Open Access   (Followers: 14)
Agriculture (Poľnohospodárstvo)     Open Access   (Followers: 2)
Agriculture and Agricultural Science Procedia     Open Access  
Agriculture and Biology Journal of North America     Open Access  
Agriculture and Food Sciences Research     Open Access   (Followers: 6)
Agriculture and Human Values     Hybrid Journal   (Followers: 13)
Agriculture, Ecosystems & Environment     Hybrid Journal   (Followers: 56)
Agriprobe     Open Access  
Agrivita : Journal of Agricultural Science     Open Access   (Followers: 2)
Agro-Science     Full-text available via subscription  
Agroalimentaria     Open Access  
Agrociencia     Open Access   (Followers: 1)
Agrociencia Uruguay     Open Access  
Agrokémia és Talajtan     Full-text available via subscription   (Followers: 2)
Agrokreatif Jurnal Ilmiah Pengabdian kepada Masyarakat     Open Access  
Agronomía Colombiana     Open Access  
Agronomía Costarricense     Open Access   (Followers: 1)
Agronomía Mesoamericana     Open Access  
Agronomie Africaine     Full-text available via subscription  
Agronomy     Open Access   (Followers: 11)
Agrosearch     Open Access   (Followers: 2)
Agrotekma : Jurnal Agroteknologi dan Ilmu Pertanian     Open Access  
Akademik Ziraat Dergisi     Open Access  
Alinteri Zirai Bilimler Dergisi : Alinteri Journal of Agricultural Sciences     Open Access  
Ambiência     Open Access  
Ambiente & Agua : An Interdisciplinary Journal of Applied Science     Open Access   (Followers: 1)
American Journal of Agricultural and Biological Sciences     Open Access   (Followers: 10)
American Journal of Botany     Full-text available via subscription   (Followers: 16)
American Journal of Economics and Sociology     Hybrid Journal   (Followers: 29)
American Journal of Potato Research     Hybrid Journal   (Followers: 2)
American Journal of Rural Development     Open Access   (Followers: 5)
Anais da Academia Brasileira de Ciências     Open Access   (Followers: 2)
Annales des Sciences Agronomiques     Full-text available via subscription  
Annals of Agricultural Sciences     Open Access   (Followers: 2)
Annals of Silvicultural Research     Open Access   (Followers: 1)
Annals Valahia University of Targoviste - Agriculture     Open Access  
Annual Review of Resource Economics     Full-text available via subscription   (Followers: 12)
APCBEE Procedia     Partially Free   (Followers: 1)
Applied Financial Economics Letters     Hybrid Journal   (Followers: 8)
Arboricultural Journal : The International Journal of Urban Forestry     Hybrid Journal   (Followers: 7)
Archivos de Zootecnia     Open Access   (Followers: 1)
ARO. The Scientific Journal of Koya University     Open Access  
Arquivos do Instituto Biológico     Open Access   (Followers: 1)
Arthropod-Plant Interactions     Hybrid Journal   (Followers: 2)
Asian Economic Papers     Hybrid Journal   (Followers: 7)
Asian Journal of Agricultural Research     Open Access   (Followers: 4)
Asian Journal of Medical and Biological Research     Open Access   (Followers: 2)
Asian Journal of Plant Sciences     Open Access   (Followers: 2)
Australian Cottongrower, The     Full-text available via subscription   (Followers: 1)
Australian Economic Papers     Hybrid Journal   (Followers: 31)
Australian Economic Review     Hybrid Journal   (Followers: 6)
Australian Forest Grower     Full-text available via subscription   (Followers: 4)
Australian Forestry     Full-text available via subscription   (Followers: 2)
Australian Grain     Full-text available via subscription   (Followers: 3)
Australian Holstein Journal     Full-text available via subscription   (Followers: 1)
Australian Journal of Agricultural and Resource Economics     Hybrid Journal   (Followers: 3)
Australian Journal of Agricultural Engineering     Open Access   (Followers: 1)
Australian Sugarcane     Full-text available via subscription  
Avances en Investigacion Agropecuaria     Open Access   (Followers: 1)
Bangladesh Agronomy Journal     Open Access   (Followers: 1)
Bangladesh Journal of Agricultural Research     Open Access   (Followers: 4)
Bangladesh Journal of Scientific Research     Open Access   (Followers: 2)
Bioagro     Open Access   (Followers: 1)
Biocatalysis and Agricultural Biotechnology     Hybrid Journal   (Followers: 4)
Biocontrol Science and Technology     Hybrid Journal   (Followers: 5)
Biodiversity     Hybrid Journal   (Followers: 27)
Biodiversity : Research and Conservation     Open Access   (Followers: 29)
Biological Agriculture & Horticulture : An International Journal for Sustainable Production Systems     Partially Free   (Followers: 11)
Biosystems Engineering     Hybrid Journal   (Followers: 10)
Biotecnología en el Sector Agropecuario y Agroindustrial     Open Access  
Biotemas     Open Access  
Boletín Semillas Ambientales     Open Access  
Bragantia     Open Access   (Followers: 2)
Brazilian Archives of Biology and Technology     Open Access   (Followers: 3)
British Poultry Science     Hybrid Journal   (Followers: 5)
Buletin Peternakan : Bulletin of Animal Science     Open Access   (Followers: 1)
Buletin Veteriner Udayana     Open Access   (Followers: 3)
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca : Food Science and Technology     Open Access  
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Agriculture     Open Access  
Caderno de Ciências Agrárias     Open Access  
Cahiers Agricultures     Open Access  
California Agriculture     Open Access   (Followers: 2)
Cambridge Journal of Economics     Hybrid Journal   (Followers: 59)
Canadian Water Resources Journal     Hybrid Journal   (Followers: 22)
Capitalism Nature Socialism     Hybrid Journal   (Followers: 16)
Ceiba     Open Access  
Central European Forestry Journal     Open Access  
Cereal Chemistry     Full-text available via subscription   (Followers: 5)
CERNE     Open Access  
CESifo Economic Studies     Hybrid Journal   (Followers: 17)
Change and Adaptation in Socio-Ecological Systems     Open Access   (Followers: 2)
Chemical and Biological Technologies for Agriculture     Open Access  
Chilean Journal of Agricultural Research     Open Access   (Followers: 1)
Ciencia & Natura     Open Access   (Followers: 1)
Ciência e Agrotecnologia     Open Access  
Ciencia e investigación agraria     Open Access   (Followers: 1)
Ciência e Técnica Vitivinícola     Open Access  
Ciencia forestal en México     Open Access  
Ciência Rural     Open Access   (Followers: 2)
Ciencia y Agricultura     Open Access  
Ciencia, Tecnología y Salud     Open Access  
COCOS : The Journal of the Coconut Research Institute of Sri Lanka     Open Access   (Followers: 1)
Coffee Science     Open Access  
Cogent Food & Agriculture     Open Access   (Followers: 3)
Competition & Change     Hybrid Journal   (Followers: 10)
Computers and Electronics in Agriculture     Hybrid Journal   (Followers: 5)
Contributions to Tobacco Research     Open Access   (Followers: 2)
Corps et culture     Open Access   (Followers: 5)
Cuadernos de Desarrollo Rural     Open Access   (Followers: 1)
Cultivos Tropicales     Open Access   (Followers: 1)
Cultural Geographies     Hybrid Journal   (Followers: 18)
Cultural Sociology     Hybrid Journal   (Followers: 34)
Cultural Studies - Critical Methodologies     Hybrid Journal   (Followers: 16)
Cultural Studies of Science Education     Hybrid Journal   (Followers: 6)
Cultural Trends     Hybrid Journal   (Followers: 17)
Culture, Agriculture, Food and Environment     Hybrid Journal   (Followers: 15)
Culture, Agriculture, Food and Environment     Hybrid Journal   (Followers: 7)
Current Agricultural Science and Technology     Open Access  
Current Agriculture Research Journal     Open Access   (Followers: 1)
Current Life Sciences     Open Access   (Followers: 4)
Current Research in Dairy Sciences     Open Access   (Followers: 5)
Developments in Agricultural Economics     Full-text available via subscription   (Followers: 4)
Developments in Agricultural Engineering     Full-text available via subscription   (Followers: 2)
Diatom Research     Hybrid Journal   (Followers: 2)
Die Bodenkultur : Journal of Land Management, Food and Environment     Open Access  
Dossiers Agraris     Open Access  
Ecological Applications     Full-text available via subscription   (Followers: 163)
Economic Affairs     Hybrid Journal   (Followers: 6)
Economic and Industrial Democracy     Hybrid Journal   (Followers: 8)
Economic Bulletin     Hybrid Journal   (Followers: 4)
Economic Policy     Hybrid Journal   (Followers: 38)
Economic Record     Hybrid Journal   (Followers: 7)
Emirates Journal of Food and Agriculture     Open Access   (Followers: 1)
Empirical Economics     Hybrid Journal   (Followers: 15)
Encuentro     Open Access  
Engineering in Agriculture, Environment and Food     Hybrid Journal  
Ensaios e Ciência: Ciências Biológicas, Agrárias e da Saúde     Open Access  
Eppo Bulletin     Hybrid Journal   (Followers: 2)
Ethiopian Journal of Agricultural Sciences     Open Access  
Ethiopian Journal of Science and Technology     Open Access  
Ethology     Hybrid Journal   (Followers: 6)
EU agrarian Law     Open Access   (Followers: 4)
Euphytica     Hybrid Journal   (Followers: 7)
Eurochoices     Hybrid Journal   (Followers: 1)
European Agrophysical Journal     Open Access  
European Journal of Agronomy     Hybrid Journal   (Followers: 11)
European Journal of American Culture     Hybrid Journal   (Followers: 2)
European Journal of Health Economics     Hybrid Journal   (Followers: 21)
European Journal of Law and Economics     Hybrid Journal   (Followers: 64)
European Review of Agricultural Economics     Hybrid Journal   (Followers: 11)
EvoDevo     Open Access   (Followers: 3)
Extensão Rural     Open Access   (Followers: 1)
Farmer’s Weekly     Full-text available via subscription  
Farmlink Africa     Full-text available via subscription  
Fitosanidad     Open Access  
Florea : Jurnal Biologi dan Pembelajarannya     Open Access  
Folia Horticulturae     Open Access   (Followers: 4)
Food and Agricultural Immunology     Hybrid Journal   (Followers: 2)
Food and Energy Security     Open Access   (Followers: 5)
Food and Environment Safety     Open Access  

        1 2 3 | Last

Journal Cover American Journal of Potato Research
  [SJR: 0.558]   [H-I: 35]   [2 followers]  Follow
    
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1874-9380 - ISSN (Online) 1099-209X
   Published by Springer-Verlag Homepage  [2355 journals]
  • Recovery of Protease Inhibitors from Potato Fruit Water by Expanded Bed
           Adsorption Chromatography in Pilot Scale
    • Authors: Cheng-yu Jin; Fan-kui Zeng; Gang Liu
      Pages: 1 - 8
      Abstract: The current study was conducted to investigate the recovery of native potato protein from potato fruit water (PFW) by expanded bed adsorption (EBA) chromatography. The eluted proteins were concentrated by ultrafiltration and spray-dried into powder. The SDS-PAGE showed that the recovered proteins were potato protease inhibitors (PPIs). The trypsin and chymotrypsin inhibitor activities of the recovered PPIs were 377.93 ± 8.22 and 12.90 ± 0.03 mg g−1 protein, respectively. The recovery yield of protease inhibitors was 74.88%. The glycoalkaloid assay showed that the recovered PPIs contained 30.31 ± 0.15 μg g−1 of α-chaconine and 92.77 ± 0.52 μg g−1 of α-solanine, and these values were much lower than those in potato protein concentrate (PPC) obtained by traditional thermal coagulation. The most abundant amino acid in the PPIs was serine. The results indicated that the EBA can be used to effectively recover native potato protein from PFW.
      PubDate: 2018-02-01
      DOI: 10.1007/s12230-017-9605-1
      Issue No: Vol. 95, No. 1 (2018)
       
  • Modification of Potato Steroidal Glycoalkaloids with Silencing RNA
           Constructs
    • Authors: Kent F. McCue; Andrew Breksa; Ana Vilches; William R. Belknap
      Pages: 9 - 14
      Abstract: Steroidal glycoalkaloids (SGAs), while found in many solanaceous plants, can accumulate to unacceptably high levels in potato tubers. The two primary SGAs that occur in potatoes are the tri-glycosylated alkaloids, α-solanine and α-chaconine. The first glycosylation steps in their biosynthetic pathways are performed by the regulated enzymes SGT1, the UDP-galactose:solanidine galactosyltransferase, and SGT2, the UDP-glucose:solanidine glucosyltransferase, respectively. Using fragments of the Sgt1 and Sgt2 genes to produce small inhibitory RNAs (siRNA), we have been able to down-regulate each branch of the pathway. The use of the siRNA approach increases the efficiency of producing transgenic plant lines with reductions in individual SGAs but further research is required to achieve reductions in levels of total SGA accumulation.
      PubDate: 2018-02-01
      DOI: 10.1007/s12230-017-9609-x
      Issue No: Vol. 95, No. 1 (2018)
       
  • The Effect of Alfalfa Residue Incorporation on Soil Bacterial Communities
           and the Quantity of Verticillium dahliae Microsclerotia in Potato Fields
           in the Columbia Basin of Washington State, USA
    • Authors: Z. A. Frederick; T. F. Cummings; D. A. Johnson
      Pages: 15 - 25
      Abstract: Verticillium wilt, caused by the soil-borne fungus Verticillium dahliae, is one of the most important diseases of potato in North America. Soil incorporation of alfalfa residues prior to planting potato could be a nonchemical Verticillium wilt management tactic by reducing the number of viable microsclerotia in field soil. Verticillium dahliae microsclerotia were quantified in field soils where organic material from alfalfa was incorporated, and numbers of microsclerotia were compared to fields where alfalfa residue was not incorporated. In addition, bacterial metagenomics was utilized to characterize soils where organic material from alfalfa was or was not incorporated to determine if alfalfa residue incorporation facilitates the formation of soils that suppress or kill V. dahliae microsclerotia. The number of V. dahliae microsclerotia in soil was greater (P = 0.0003) in fields where crop residue was incorporated than fields without incorporation when chloropicrin was used as a fumigant. Conversely, the number of V. dahliae microsclerotia observed in potato plants did not differ (P = 0.4020) between fields where residues were or were not incorporated if chloropicrin was used. Alfalfa residue incorporation did not significantly alter the soil bacterial metagenome compared to fields not subject to residue incorporation in both years of study. Despite these conclusions, the method can be employed to analyze the effect of grower practices with the intent of linking a field practice to increasing soil bacterial diversity and decreasing Verticillium wilt severity on potato.
      PubDate: 2018-02-01
      DOI: 10.1007/s12230-017-9610-4
      Issue No: Vol. 95, No. 1 (2018)
       
  • Changing Phenology of Potato and of the Treatment for its Major Pest
           (Colorado Potato Beetle) – A Long-term Analysis
    • Authors: Piotr Tryjanowski; Tim H. Sparks; Andrzej Blecharczyk; Irena Małecka-Jankowiak; Stanisław Switek; Zuzanna Sawinska
      Pages: 26 - 32
      Abstract: Potato Solanum tuberosum is one of the world’s four most important crops. Its cultivation is steadily increasing in response to the need to feed a growing world population. The yield of potato is influenced inter alia by both climate and pests. The main defoliator pest of potato is Colorado potato beetle Leptinotarsa decemlineata. Using data from a long-term experiment (1958–2013) in western Poland, we show that increasing temperature has affected the trophic relationship between potato and Colorado potato beetle. The planting, leafing, flowering and harvest dates for potato were advanced, after controlling for different cultivars, by 2.00 days, 3.04 days, 3.80 days and 3.42 days respectively for every 1 °C increase in temperature. In contrast, first treatment against Colorado potato beetle advanced by 4.66 days for every 1 °C increase in temperature, and, furthermore, the number of treatments against the beetle increased by 0.204 per 1 °C increase in temperature. This suggests that the beetle responds faster to increasing temperature than the plant does, but both parts of the system are probably greatly modified by farming practices.
      PubDate: 2018-02-01
      DOI: 10.1007/s12230-017-9611-3
      Issue No: Vol. 95, No. 1 (2018)
       
  • The Effect of Vine Kill Method on Vine Kill, Tuber Skinning Injury, Tuber
           Yield and Size Distribution, and Tuber Nutrients and Phytonutrients in Two
           Potato Cultivars Grown for Early Potato Production
    • Authors: R. A. Boydston; D. A. Navarre; H. P. Collins; B. Chaves-Cordoba
      Pages: 54 - 70
      Abstract: Sixteen vine kill programs were tested on Bintje and Ciklamen potato cultivars grown for early potato production over a three year period near Paterson, Washington. Mechanical (flail chopping, flail chopping and undercutting), chemical (glufosinate, diquat, sulfuric acid, carfentrazone, pyraflufen-ethyl), and physical (flaming) vine kill methods, and sequential combinations of the three were effective in killing rapidly growing potato vines of Bintje and Ciklamen. Rolling and crimping did not kill vines as completely and more vine regrowth occurred than with most other methods tested. Tuber skinning injury was greatly reduced when harvesting at 4 weeks after initial vine kill than at 2 weeks. None of the vine kill programs were able to hasten skin set enough to allow tubers to be harvested at 2 weeks after initial vine kill without significant tuber skinning injury. Glufosinate treatments that were applied several days earlier than other initial vine kill treatments tended to average less skinning injury at the early harvest possibly due to more time elapsing between initial vine kill and harvest. Total tuber yield and size distribution were similar among most vine kill treatments, with the exception of the earlier applied glufosinate treatments, which tended to reduce total yield, but still yielded a similar mass of desired 25 to 35 mm diameter tubers. Tubers from vine-killed plots tended to average greater N, P, K, Fe, and Ca content than tubers from non-killed control plots of both cultivars. Tuber ascorbate levels were also greater in non-killed controls, whereas total phenolic content tended to be greatest in earlier-applied glufosinate treatments. Nonchemical vine kill methods, chemical vine kill methods, and combinations of the two were identified that killed vines well, had low skinning injury at the 4 week harvest, and yielded similar amounts of 25 to 35 mm diameter early potato tubers.
      PubDate: 2018-02-01
      DOI: 10.1007/s12230-017-9614-0
      Issue No: Vol. 95, No. 1 (2018)
       
  • Assessment of Antioxidant Potential of Potato Varieties and the
           Relationship to Chemical and Colorimetric Measurements
    • Authors: Ana Seijo-Rodríguez; Olga Escuredo; M. Shantal Rodríguez-Flores; M. Carmen Seijo-Coello
      Pages: 71 - 78
      Abstract: Potatoes are one of the main foods throughout the world contributing to the daily intake of nutrients. This work studies the relationship among some physical characteristics of tubers from 35 potato varieties, the total phenol and flavonoid content and their antioxidant potential. Some significant differences were found depending on the potato variety. Thus, Fleur Bleue, Violetta, Yona, Stronga and Flamenco tubers had the highest antioxidant capacity. This is apparently a consequence of the presence of purple and red pigments in skin and flesh. A regression model for radical scavenging activity, total phenol content and the value of coordinate a* (CIElab scale) for tuber flesh was obtained.
      PubDate: 2018-02-01
      DOI: 10.1007/s12230-017-9615-z
      Issue No: Vol. 95, No. 1 (2018)
       
  • Draft Genome Sequencing of Rhizoctonia solani Anastomosis Group 3 (AG3-
           PT) Causing Stem Canker and Black Scurf of Potato
    • Authors: Virupaksh U. Patil; Vanishree Girimalla; Vinay Sagar; Vinay Bhardwaj; S. K. Chakrabarti
      Pages: 87 - 91
      Abstract: Rhizoctonia solani is a soil-borne basidiomycete fungus with a necrotrophic lifestyle being classified into fourteen reproductively incompatible anastomosis groups (AGs). AG3-PT (a potato subgroup) is associated with quantitative and qualitative yield losses through stem canker and black scurf in potato. Here we present the first draft sequence of the R. solani [AG3-PT] strain RS-20 with a G-C content of 48.3%. It consists of 11,431 total predicted protein coding regions including 181 tRNA and 31 rRNA coding genes. The initial pBLAST revealed more than 97% hits among AG groups where as only 1.7% of genes hit with other organisms. The R. solani genome is found to be dominated with tri mer repeats. The genome-wide evolutionary studies revealed the close association of AG3-PT with AG3. The draft sequence represents a helpful resource not only for understanding the core genes involved in pathogenecity but also evolution and adaptive behaviour within the R. solani species complex.
      PubDate: 2018-02-01
      DOI: 10.1007/s12230-017-9606-0
      Issue No: Vol. 95, No. 1 (2018)
       
  • Sensory Evaluation of Eleven Baked Russet-type Potato Varieties and Clones
    • Authors: Rulon R. Spear; Zach J. Holden; C. F. Ross; B. J. Weddell; Mark J. Pavek
      Pages: 92 - 100
      Abstract: Six hundred untrained panelists evaluated the baked sensory appeal of up to six varieties, three clones, and two Russet Norkotah (RN) strains. Panelists consumed small samples of plain baked potato and recorded their preference for aroma, flavor, texture, aftertaste and acceptance. After viewing photographs of two unidentified baked potatoes (RN and Classic Russet) sliced in half, they selected the photo that best described their visual preference of a baked potato; each potato was stored at 6.7 °C for 6 months prior to cooking. Eighty percent of panelists shown the photographs of the unidentified baked potatoes preferred the visual appearance of Classic R (white/cream - colored  flesh) to that of RN (yellow/Gy - colored flesh). Mean scores for all culinary traits averaged > 5.0 on the 1-9 scale, which indicated that panelists generally liked the culinary attributes of all trialed varieties, however, panelists were able to detect differences among varieties. Flavor and texture were addressed in written comments from panelists more frequently than other attributes. On a texture scale of 1–7, with 1 = moist/dense and 7 = dry/crumbly, most panelists preferred baked potatoes with a texture of 3 (creamy/smooth).
      PubDate: 2018-02-01
      DOI: 10.1007/s12230-017-9607-z
      Issue No: Vol. 95, No. 1 (2018)
       
  • Potato Black Dot – The Elusive Pathogen, Disease Development and
           Management
    • Authors: Dennis A. Johnson; Brad Geary; Leah (Lahkim) Tsror
      Abstract: Black dot caused by Colletotrichum coccodes was initially considered a mild disease of potato, mainly infecting weakened plants. In the past two decades the fungus has been reported to infect roots and stems relatively early in the growing season, be prevalent on potato and in field soil in major potato production regions of the world, cause early death of foliage by itself and in association with other pathogens, reduce plant and root growth, and to reduce potato yields. Furthermore, the tuber phase of the disease is recognized as a major problem in that unsightly blemishes reduce value of fresh market potatoes. C. coccodes has been dubbed an elusive pathogen because infections are latent, disease symptoms on foliage are often non-descript and can be confused with other potential causes, disease effects on potato yield have not been consistent, and the disease is not satisfactorily managed. Sources of variation on yield likely arise from genetic variation within the pathogen population; the host population such as potato cultivar, maturity class, and plant organs infected; environmental variables; cultural and management practices such as timing of fungicide application; crop duration; post-harvest conditions; and interactions of C. coccodes with other microbes and with potato cultivars. Considerable research has been done on potato black dot during the last two decades, the scope of this paper is to define our current understanding on the disease and summarize disease management strategies.
      PubDate: 2018-02-06
      DOI: 10.1007/s12230-018-9633-5
       
  • “Periderm Disorder Syndrome”: a New Name for the Syndrome Formerly
           Referred to as Pink Eye
    • Authors: Edward C. Lulai; Robert P. Sabba; Philip Nolte; Neil C. Gudmestad; Gary A. Secor
      Abstract: The “periderm disorder syndrome” (PDS), colloquially referred to previously as “pink eye”, is a physiological disorder caused by the death of the meristematically active layer of periderm cells (phellogen) and subsequent degeneration of the associated native periderm. This disorder occurs at a time when phellogen cell division is essential in the production of new periderm to cover and protect the expanding tuber surface and replace sloughed cells during later stages of rapid tuber growth. The characteristic degeneration and loss of periderm integrity, including the barrier provided by the suberized phellem, results in the aberrant induction of internal suberization. These aberrations often include accumulations of suberin polyphenolics (SPP) on neighboring cortical parenchyma cell walls as part of an erratic regenerative response to protect the vulnerable underlying tissues. Autofluorescence of the excessive accumulation of SPPs in cortical tissues located beneath the dysfunctional, or absent, periderm of afflicted tubers is a durable characteristic of extreme PDS. Conversely, the pinkish coloration sometimes associated with the PDS often is not present, and if present it is frequently barely discernable and ephemeral. Therefore, the pinkish coloration is not a reliable diagnostic nor does it lend itself to an appropriate name. Rather the syndrome is characterized by degeneration of the periderm and induction of erratic regenerative responses (mainly SPP accumulations) that are diagnostic and indicative of PDS. As such, “Periderm Disorder Syndrome” is a more accurate and descriptive name for this erratic and costly problem.
      PubDate: 2018-01-25
      DOI: 10.1007/s12230-018-9634-4
       
  • Economic Impacts of Zebra Chip in Idaho, Oregon, and Washington
    • Authors: Gina A. Greenway; Silvia Rondon
      Abstract: Zebra Chip disease vectored by the potato psyllid Bactericera cockerelli (Šulc) was first reported in Idaho and the Columbia Basin of Oregon and Washington in 2011. Since then growers have incurred significant costs for managing the disease. Thus, we conducted an expert opinion survey to estimate expenditure on insecticides dedicated to controlling potato psyllids in the largest potato producing regions of Idaho, Oregon, and Washington. Results highlight a total of about 9 million US dollars spent on active ingredients targeted at psyllid control. When application costs are added to the cost of insecticides, expenditures total about 11 million US dollars.
      PubDate: 2018-01-22
      DOI: 10.1007/s12230-018-9636-2
       
  • Losses during Storage of Potato Varieties in Relation to Weather
           Conditions during the Vegetation Period and Temperatures during Long-Term
           Storage
    • Authors: Grudzińska Magdalena; Mańkowski Dariusz
      Abstract: Degradation of harvested tubers due to water loss, sprouting, and disease can cause severe economic difficulties in the cultivation of potatoes (Solanum tuberosum). This study evaluated the storage losses of new varieties of potato and determined the sprouting dates of potatoes stored at different temperatures. Additionally, this study evaluated the influence of weather conditions during the vegetative growth period on the date of sprouting in storage. After storage at three different temperatures (3, 5, and 8 °C), we estimated natural losses and losses caused by sprouting or the development of disease. The potato varieties stored at 3 °C, and 5 °C had similar weight losses (8.8% and 9.3%, respectively), but the potatoes stored at 8 °C had higher losses (10.8%). The average potato losses caused by disease ranged from 0.6% to 10%. The onset of sprouting of potatoes stored at 8 °C depended on the variety and began in the 20 day of December. Storage at 5 °C delayed sprouting by about 50 days compared with storage at 8 °C. Weather conditions (hot and rainy) during vegetative growth of the plants also influenced sprouting date, natural losses, and the amount of disease during storage. Our data showed a significant correlation between the hydrothermal coefficient during the vegetative period and the date of sprouting of potatoes during storage.
      PubDate: 2018-01-19
      DOI: 10.1007/s12230-017-9617-x
       
  • Proceedings from the 2014 Symposium: Bringing New Potato Products to
           Market
    • Authors: Robert M. Gareau
      PubDate: 2018-01-19
      DOI: 10.1007/s12230-017-9608-y
       
  • Exceptional Potato Clones Selected by Filipino Farmers from True Potato
           Seed: Status after 30 Years
    • Authors: Victoria E. Demonteverde; Joseph M. Brillo; Jose Regie Demonteverde; Peter VanderZaag
      Abstract: In a remote mountainous region of the Philippines, farmers selected their own clones from hybrid True Potato Seed (TPS) populations and have maintained them for 30 years without public support. In 1985, the International Potato Center (CIP) initiated on-farm TPS research in the Mount Kanlaon area to help farmers control or reduce the rates of bacterial wilt caused by Ralstonia solanacearum. Seedlings were either grown in nursery beds or as transplants in the field. At harvest, farmers not only harvested their crop for either food or for sale but also selected their preferred clones. A survey conducted in 2016 showed that farmers are still growing potato clones selected from TPS and that these clones had spread to numerous areas within and around Mount Kanlaon. Farmers kept these clones because it was profitable because they required minimum inputs and their resistance to various pests and diseases and adverse weather conditions. ELISA tests showed that these clones have excellent virus resistance which partially explains why these clones have been growing for 30 years without a formal seed production program or any government support. Parents used to develop the TPS hybrids included those with virus and R. solanacearum resistance.
      PubDate: 2018-01-17
      DOI: 10.1007/s12230-018-9631-7
       
  • An Effect of Weather and Soil Conditions and Their Interaction on
           Infection of Leaves and Tubers of Potato with Bacteria Clavibacter
           michiganensis subsp. sepedonicus
    • Authors: Milena Pietraszko; Grzegorz Gryń; Włodzimierz Przewodowski
      Abstract: The aim of research was to evaluate an effect of weather conditions in the years of study considering the air temperature and precipitation as well as granulometric distribution of soil, taking into account the temperature and moisture content, on asymptomatic infection caused by Clavibacter michiganensis subsp. sepedonicus (Cms) in leaves and tubers. The level of infection of leaves and tubers with Cms was differentiated by the thermal and humidity conditions occurring in the years of research. The granulometric distribution of soil (soil profile) had a significant effect on the level of leaf infection. In the year 2014, with moderate temperature and humidity, the highest intensity of leaves and tubers infection was observed on soil of the highest moisture content – sandy loam. In the years with extreme weather conditions, i.e. the drought in 2015 or the abundant rainfall in 2016, the most intensive infection was observed in leaves and tubers grown on soil of low humidity – slightly loamy sand and loamy sand. The degree of infection was found to decrease with increasing air temperature and precipitation level as well as with the increase of soil moisture. On the other hand, increasing soil temperature favoured infection in tubers.
      PubDate: 2018-01-17
      DOI: 10.1007/s12230-017-9629-6
       
  • Differential Spread of Potato virus Y (PVY) Strains O, N:O and NTN in the
           Field: Implications for the Rise of Recombinant PVY Strains in New
           Brunswick, Canada
    • Authors: Tyler D. B. MacKenzie; Jacques Lavoie; Xianzhou Nie; Mathuresh Singh
      Abstract: Potato virus Y (PVY) is a major cause of yield and quality loss in potato crops worldwide. Recently, populations of PVY strains have shifted dramatically toward recombinant strains such as PVYNTN and PVYN:O. A 2010 to 2016 survey of PVY strains in commercial fields of New Brunswick (NB), Canada, and five field trials tracking PVY spread in NB and Manitoba, were conducted to study the current status of PVY strains and their relative rates of spread. In NB, PVYO dropped from 82% of infections in 2010 to 14% in 2016, replaced mostly by PVYNTN (64%) and PVYN:O (22%).In field trials with Russet Burbank and Gold rush varieties, PVYNTN spread most effectively compared to PVYN:O and PVYO. Strain-specific PVY spread varied with the potato variety, possibly due to selective PVYO resistance in Goldrush, mostly expressed at the plant-to-plant transmission level with little difference in transduction to tubers in infected plants. Relevance of in-field differences in spread of strains to changes in regional PVY populations, and potential mechanisms responsible, are discussed.
      PubDate: 2018-01-16
      DOI: 10.1007/s12230-018-9632-6
       
  • Potato Cultivar and Seed Type Affect the Development of Systemic Potato
           virus Y (PVY N-Wi ) Infection
    • Authors: Elisa Boyd; Eileen Carpenter; Brian T. Ross; Nina Zidack; Michelle L. Flenniken
      Abstract: Potato virus Y (PVY) infection is one of the greatest challenges to seed potato production in the United States. To determine how cultivar and seed type affect the development of systemic PVY infection, Russet Burbank and Russet Norkotah Colorado 3 cultivars were grown from two types of pre-nuclear seed (i.e., plantlets and minitubers) and Generation 3 (G3) tubers and challenged with PVY strain Wilga (PVYN-Wi). Systemic PVY infection was measured by assaying spread of virus from the inoculation site to upper non-inoculated leaves. The Burbank cultivar had a lower incidence of systemic PVY infection compared to the incidence of systemic PVY that developed in the Colorado 3 cultivar. Furthermore, Burbank plants grown from G3 tubers had a lower incidence of systemic PVY infection, as compared to Burbank plants grown from plantlets. Together our results indicate that both cultivar and seed type affect the development of systemic PVYN-Wi infections post-inoculation.
      PubDate: 2018-01-10
      DOI: 10.1007/s12230-017-9625-x
       
  • Reveille Russet: An Early, Widely Adapted, High-Count-Carton Russet for
           the Fresh Market
    • Authors: J. C. Miller; D. C. Scheuring; J. W. Koym; D. G. Holm; J. J. Pavek; R. G. Novy; J. L. Whitworth; J. C. Stark; B. A. Charlton; S. Yilma; N. R. Knowles; M. J. Pavek; J. J. Nunez; R. Wilson; C. R. Brown; C. C. Shock; C. M. Long
      Abstract: Reveille Russet (ATX91137-1Ru) is a uniform, medium-early, high yielding, high pack-out, fresh market russet cultivar, with wide adaptability, released by Texas A&M AgriLife Research in 2015. It resulted from a cross of Bannock Russet(♀) and breeding clone A8343–12(♂). Reveille Russet produces attractive, oblong tubers, with medium russeting, white flesh and excellent culinary qualities. It has a lower incidence of internal defects and a higher percentage of marketable tubers in the 170 to 284 g and 284 to 510 g (6 to 10 oz. and 10 to 18 oz.) size classes than Russet Norkotah. Reveille Russet is resistant to hollow heart, second growth and blackspot bruise. It also stores longer and tends to wound-heal to a lighter brown color upon skinning during harvest and/or handling than Russet Norkotah.
      PubDate: 2017-12-12
      DOI: 10.1007/s12230-017-9620-2
       
  • Impact of Canopy Destruction from Simulated Hail on Potato Yield and
           Economic Return
    • Authors: M. J. Pavek; Seth Shelton; Z. J. Holden; B. J. Weddell
      Abstract: Insurance against hailstorm-inflicted losses to potato crops is crucial for producer risk management. Insurance providers need regionally specific information on which to base estimates of hail damage. The objective of the research reported here was to determine the effects of a range of simulated hail defoliation treatments, low (33%), medium (66%), and high (99%), relative to an untreated control (0%) on yield and grower economic returns from one medium- and one late-maturing potato variety (‘Russet Norkotah TX278’ and ‘Ranger Russet,’ respectively) at three growth stages (tuber initiation, early bulking, and late bulking) in the Columbia Basin of Washington. Plants within the 33% and 66% treatments were defoliated by sweeping a garden rake with 16 solid, curved tines through the canopy of each treatment row several times until plants exhibited the desired defoliation level. Tuber initiation and early bulk plants within the 99% treatment were essentially mowed to ground level. Intensity of defoliation and stage of growth had significant, interacting effects on grower returns. Gross return and yield for both varieties at each growth stage were significantly reduced by 99% defoliation; these effects were mediated by the effects of defoliation on tuber size distribution. Total yield and gross return experienced the largest declines at early bulk compared with tuber initiation and late bulk defoliation in both varieties. When 99% of the early bulk foliage was removed, Russet Norkotah TX278 gross return and yield were reduced to 14% and 38%, respectively, of the values for the non-treated control, and Ranger Russet gross return and yield were reduced to 30% and 51% of control values, respectively. Defoliation of 99% at all growth stages significantly reduced overall market yield compared to controls for both varieties. However, tuber size distribution was most affected by 99% defoliation at early bulk. Severe defoliation (99%) at tuber initiation significantly delayed vine senescence in both varieties. The results of this study suggest that insurance adjusters should take into account the combined influence of growth stage and defoliation level when hail damage occurs.
      PubDate: 2017-12-12
      DOI: 10.1007/s12230-017-9612-2
       
  • Potato Plants Grown from Minitubers are Delayed in Maturity and Lower in
           Yield, but are not at a Higher Risk of Potato virus Y Infection than
           Plants Grown from Conventional Seed
    • Authors: Ana C. Fulladolsa; Kyle E. LaPlant; Russell L. Groves; Amy O. Charkowski
      Abstract: Potato virus Y (PVY) is the most important virus in North American seed potato (Solanum tuberosum L.) production. Planting virus-free minitubers in place of field-grown seed, which usually has a low PVY incidence, reduces initial PVY inoculum in the field. However, plants grown from minitubers are smaller and emerge later than those grown from conventional seed, which could make them more likely to become infected with PVY. We tested the effects of seed type of three potato cultivars (Dark Red Norland, Goldrush, and Red La Soda) on PVY incidence, tuber yield, and flowering time. The incidence of PVY in plants grown from minitubers did not differ from that of plants grown from conventional seed. Minituber-grown plants produced lower tuber yields than plants grown from conventional seed. Plants from minitubers also emerged and flowered later, but this did not increase their incidence of PVY. Cultivar-specific differences were observed in tuber yield and flowering times, suggesting that this variation may influence PVY incidence more than seed type.
      PubDate: 2017-12-07
      DOI: 10.1007/s12230-017-9613-1
       
 
 
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