Zobrazeno 1 - 10 of 212 pro vyhledávání: '"Ashok K. Alva"'
2
Mobility and fractionation of copper in sandy soils
Autor: Yuncong Li, Qian Sun, Ashok K. Alva, Tiantian Li
Publikováno v: Environmental Pollutants & Bioavailability, Vol 31, Iss 1, Pp 18-23 (2019)
The transport and fractionation of copper (Cu) were investigated in three soils which were under continuous citrus production for over 30 years. The above soils received 50 kg Cu ha−1, and were leached with eight pore volumes of water (equivalent t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4c321d46bc3828c47e5655af25889c03
https://doi.org/10.1080/09542299.2018.1558114
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3
Global field experiments for potato simulations
Autor: Maria I. Travasso, Ashok K. Alva, Rishi Prasad, Lincoln Zotarelli, V.K. Arora, Jørgen E. Olesen, Qiaoxue Dong, Joost Wolf, Walter Bowen, Ulrich Kleinwechter, Manuel Gastelo, Bruno Condori, Rubi Raymundo, Senthold Asseng
Publikováno v: ODjAR : open data journal for agricultural research 4 (2018)
ODjAR : open data journal for agricultural research, 4, 35-44
Raymundo, R, Asseng, S, Prasad, R, Kleinwechter, U, Condori, B, Bowen, W, Wolf, J, Olesen, J E, Dong, Q, Zotarelli, L, Gastelo, M, Alva, A, Travasso, M & Arora, V 2018, ' Global field experiments for potato simulations ', Open Data Journal for Agricultural Research, vol. 4, pp. 35-44 . < http://library.wur.nl/ojs/index.php/ODJAR/article/view/15813 >
A large field potato experimental data set has been assembled for simulation modeling. The data are from temperate, subtropical, and tropical regions across the world and include 87 experiments with 204 treatments. Treatments include nitrogen fertili
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05876299759798ed7808c6beeea882a4
https://doi.org/10.18174/odjar.v4i0.15813
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4
Identification of Factors Most Important for Ammonia Emission from Fertilized Soils for Potato Production Using Principal Component Analysis
Autor: Ashok K. Alva, Yuncong Li, Ying Ouyang, Guodoong Liu, Kati W. Migliaccio
Publikováno v: Journal of Sustainable Watershed Science and Management. 1:21-30
Ammonia (NH3) emissions from fertilized soils are a costly problem that is undermining agricultural and ecological sustainability worldwide. Ammonia emissions from crop production have been reliably documented in recent years. However, insufficient e
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0ef3c4682e6c87e54d8327e16df4f8cf
https://doi.org/10.5147/jswsm.v1i1.130
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5
Estimation of Sugar Beet Aboveground Biomass by Band Depth Optimization of Hyperspectral Canopy Reflectance
Autor: Fei Li, Haiqing Tian, Ashok K. Alva, Hui Wang, Ziyi Zhang, Shude Shi, Li Zhe
Publikováno v: Journal of the Indian Society of Remote Sensing. 45:795-803
Aboveground biomass of sugar beet influences tuber growth and sugar accumulation. Thus, accurate, rapid, and non-destructive technique of biomass estimation is important to optimize the crop management practices to attain the required aboveground bio
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d6a534f5abb454e6584aada0cc2f6298
https://doi.org/10.1007/s12524-016-0632-z
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6
Biochar and manure effluent effects on soil biochemical properties under corn production
Autor: Harold P. Collins, Ashok K. Alva, Tanumoy Bera, T.J. Purakayastha, Ashok K. Patra
Publikováno v: Applied Soil Ecology. 107:360-367
Biochar (BC), an aromatic carbon (C) rich compound has been used to sequester C in terrestrial ecosystems. Biochar has also been shown to improve soil fertility and crop productivity when applied to soil. Biochemical properties of soil are sensitive
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::97c3ea724e81e0ac1f2980b6f53ba415
https://doi.org/10.1016/j.apsoil.2016.07.011
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7
A potato model intercomparison across varying climates and productivity levels
Autor: D. Harahagazwe, Angelinus C. Franke, Iwan Supit, Soora Naresh Kumar, Alex C. Ruane, Roberto Ferrise, Paolo Merante, Ashok K. Alva, Gerrit Hoogenboom, Claudio O. Stöckle, Carolina Barreda, Marco Bindi, Prem Woli, Kenneth J. Boote, Joost Wolf, Jørgen E. Olesen, David H. Fleisher, Panamanna M. Govindakrishnan, Rubi Raymundo, Senthold Asseng, Phillip S. Parker, Dirk Raes, Bruno Condori, Roberto Quiroz, Eline Vanuytrecht, Claas Nendel
Publikováno v: H. Fleisher, D, Condori, B, Quiroz, R, Alva, A, Asseng, S, Barreda, C, Bindi, M, Boote, K J, Ferrise, R, C. Franke, A, Govindakrishnan, P M, Harahagazwe, D, Hoogenboom, G, Kumar, S N, Merante, P, Nendel, C, Olesen, J E, Parker, P S, Raes, D, Raymundo, R, Ruane, A C, Stöckle, C O, Supit, I, Vanuytrecht, E, Wolf, J & Woli, P 2017, ' A potato model intercomparison across varying climates and productivity levels ', Global Change Biology, vol. 23, no. 3, pp. 1258-1281 . https://doi.org/10.1111/gcb.13411
Global Change Biology, 23(3), 1258-1281
Global Change Biology 23 (2017) 3
A potato crop multi-model assessment was conducted to quantify variation among models and evaluate responses to climate change. Nine modeling groups simulated agronomic and climatic responses at low- (Chinoli, Bolivia and Gisozi, Burundi) and high- (
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c82c300989f1854261f1fd8de0973743
https://doi.org/10.1111/gcb.13411
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8
Manure and nitrogen application enhances soil phosphorus mobility in calcareous soil in greenhouses
Autor: Qing Chen, Zhengjuan Yan, Junliang Li, Ashok K. Alva, Shuo Chen
Publikováno v: Journal of Environmental Management. 181:26-35
Over many years, high phosphorus (P) loading for intensive vegetable cropping in greenhouses of North China has contributed to excessive P accumulation, resulting in environmental risk. In this study, the influences of manure and nitrogen (N) applica
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88a5b6764f0dedd3f9f9f21e6b08f017
https://doi.org/10.1016/j.jenvman.2016.05.081
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9
Potato Response to Different Irrigation Regimes Using Saline Water
Autor: F. El Mokh, Kamel Nagaz, M.M. Masmoudi, Ashok K. Alva, N. Ben Mechlia
Publikováno v: Irrigation and Drainage. 65:654-663
Field experiments were performed to study potato response to irrigation regimes using saline water on a sandy soil in southern Tunisia during the years 2011–2014. Irrigation regimes consisted in the replenishment of cumulated ETc when 35% of the ro
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0b75680f134c5945fd3158b1e7815ffd
https://doi.org/10.1002/ird.1987
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10
Petiole N, P, K Concentrations and Yield of the Potato Cultivar Molli from Certified Organic Amendments and Fertilizer Formulations
Autor: Rick A. Boydston, Lyndon D. Porter, B. Chaves Cordoba, Harold P. Collins, Ashok K. Alva
Publikováno v: Communications in Soil Science and Plant Analysis. 47:1227-1238
This study evaluated the petiole uptake of nitrogen, phosphorus, potassium, and sulfur (N, P, K, and S) by the potato from two seed meals, mint compost, and five commercially available organic fertilizers under an irrigated certified organic producti
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::673e3d366458618c1b1e1eef77a53f15
https://doi.org/10.1080/00103624.2016.1166247
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