Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Wallace Wilhelm"'
Autor:
Wallace Wilhelm, Gary E. Varvel
Publikováno v:
Soil and Tillage Research. 114:28-36
Emphasis and interest in carbon (C) and nitrogen (N) storage (sequestration) in soils has greatly increased in the last few years, especially C with its’ potential to help alleviate or offset some of the negative effects of the increase in greenhou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::857a5d8953a86d770af2e7f597ecd2f9
https://doi.org/10.1016/j.still.2011.03.005
https://doi.org/10.1016/j.still.2011.03.005
Autor:
Ronald F. Follett, R. W. Rickman, Hero T. Gollany, Jeffrey M. Novak, Yi Liang, S. L. Albrecht, Wallace Wilhelm, Patrick G. Hunt
Publikováno v:
Soil Science Society of America Journal. 74:372-383
Concerns about CO 2 emissions and fossil fuel supplies have enhanced interest in using crop residues for biofuel production; however, maintaining soil organic C (SOC) through residue return is vital for maintaining soil productivity. Our objectives w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72f22ea6bc66b8677c34b5161ee80695
https://doi.org/10.2136/sssaj2009.0086
https://doi.org/10.2136/sssaj2009.0086
Publikováno v:
Communications in Soil Science and Plant Analysis. 40:2044-2057
Mineralization contributes significantly to agronomic nitrogen (N) budgets and is difficult to accurately predict. Models for predicting N‐mineralization contributions are needed, and development of these models will require field‐based data. In
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3745a73a6ec817f7d71779f359632872
https://doi.org/10.1080/00103620902960575
https://doi.org/10.1080/00103620902960575
Autor:
Wallace Wilhelm, Gary E. Varvel
Publikováno v:
BioEnergy Research. 1:223-228
Corn residue is viewed as an abundant, inexpensive source of biomass that can be removed from fields for ethanol production without deleterious production or environmental effects if proper management is used according to some recent publications. Ot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c75cefa184f9b5c00a186f48d102aa86
https://doi.org/10.1007/s12155-008-9026-6
https://doi.org/10.1007/s12155-008-9026-6
Autor:
Gary E. Varvel, Wallace Wilhelm
Publikováno v:
Agronomy Journal. 100:1180-1184
Proposals promoting the use of massive amounts of crop residues and other lignocellulosic biomass for biofuel production have increased the need for evaluation of the sustainability of cropping practices and their effect on environment quality. Our o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::52052e987d74a14d246b86130120fced
https://doi.org/10.2134/agronj2007.0383
https://doi.org/10.2134/agronj2007.0383
Publikováno v:
Soil and Tillage Research. 97:60-70
Data from a field experiment conducted in eastern Nebraska over 16 years (1986–2001) were used to determine the energy balance of corn (Zea mays L.) and soybean (Glycine max L.) as affected by tillage treatments and rotation. Tillage treatments inc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6aa2ce74e88ca2a5c8b723f8a9964426
https://doi.org/10.1016/j.still.2007.08.008
https://doi.org/10.1016/j.still.2007.08.008
Publikováno v:
Field Crops Research. 90:133-143
Plant parameters are critical inputs in crop simulation models and allow a general set of algorithms to represent features of specific cultivars. A subset of plant parameters is often referred to as ‘‘genetic coefficients’’. However, these ge
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e892f0ca9bd58d515f0ed714c6355146
https://doi.org/10.1016/j.fcr.2004.07.022
https://doi.org/10.1016/j.fcr.2004.07.022
Publikováno v:
Scopus-Elsevier
Society is facing three related issues: overreliance on imported fuel, increasing levels of greenhouse gases in the atmosphere, and producing sufficient food for a growing world population. The U.S. Department of Energy and private enterprise are dev
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::797776730b4658a5642abe4846ec716a
https://doi.org/10.2134/agronj2004.1000a
https://doi.org/10.2134/agronj2004.1000a
Autor:
Wallace Wilhelm, Gary E. Varvel
Publikováno v:
Agronomy Journal. 95:1220-1225
Increased N availability is often associated with the beneficial effects of rotating grain and legume crops. Our objective was to utilize yield response data from two long-term studies to determine the amount of N supplied by soybean [Glycine max (L.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03f4e324d3c759029a801dc4e2cd070e
https://doi.org/10.2134/agronj2003.1220
https://doi.org/10.2134/agronj2003.1220
Publikováno v:
European Journal of Agronomy. 19:495-507
Improving current cultural practices often involves more precise timing of the management activity based on crop development. Using crop simulation models to predict crop development and phenology has several problems. First, most existing models do
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24b1dcbca44108e353f405cccec9ef12
https://doi.org/10.1016/s1161-0301(02)00186-7
https://doi.org/10.1016/s1161-0301(02)00186-7