Zobrazeno 1 - 10 of 199 pro vyhledávání: '"John E Sawyer"'
1
Akademický článek
Maximum soil organic carbon storage in Midwest U.S. cropping systems when crops are optimally nitrogen-fertilized.
Autor: Hanna J Poffenbarger, Daniel W Barker, Matthew J Helmers, Fernando E Miguez, Daniel C Olk, John E Sawyer, Johan Six, Michael J Castellano
Publikováno v: PLoS ONE, Vol 12, Iss 3, p e0172293 (2017)
Nitrogen fertilization is critical to optimize short-term crop yield, but its long-term effect on soil organic C (SOC) is uncertain. Here, we clarify the impact of N fertilization on SOC in typical maize-based (Zea mays L.) Midwest U.S. cropping syst
Externí odkaz: https://doaj.org/article/ed8f7bba504c4cd5b4e40b8fd5400f9e
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2
Akademický článek
Root and shoot biomass and nutrient composition of winter rye cover crop following corn and soybean
Autor: Swetabh Patel, Arshdeep Singh, John E. Sawyer, John P. Lundvall
Publikováno v: Agrosystems, Geosciences & Environment, Vol 7, Iss 4, Pp n/a-n/a (2024)
Abstract Winter cereal rye (Secale cereale L.), a commonly used cover crop in corn (Zea mays L.) systems, has potential to scavenge soil NO3–N through a fibrous root system. This study aimed to quantify root and shoot biomass, carbon (C), and nitro
Externí odkaz: https://doaj.org/article/55d187ad32a04e5d8309dee5d156d584
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3
Akademický článek
U.S. cereal rye winter cover crop growth database
Autor: Alexandra M. Huddell, Resham Thapa, Guillermo S. Marcillo, Lori J. Abendroth, Victoria J. Ackroyd, Shalamar D. Armstrong, Gautam Asmita, Muthukumar V. Bagavathiannan, Kipling S. Balkcom, Andrea Basche, Shawn Beam, Kevin Bradley, Lucas Pecci Canisares, Heather Darby, Adam S. Davis, Pratap Devkota, Warren A. Dick, Jeffery A. Evans, Wesley J. Everman, Tauana Ferreira de Almeida, Michael L. Flessner, Lisa M. Fultz, Stefan Gailans, Masoud Hashemi, Joseph Haymaker, Matthew J. Helmers, Nicholas Jordan, Thomas C. Kaspar, Quirine M. Ketterings, Eileen Kladivko, Alexandra Kravchenko, Eugene P. Law, Lauren Lazaro, Ramon G. Leon, Jeffrey Liebert, John Lindquist, Kristen Loria, Jodie M. McVane, Jarrod O. Miller, Michael J. Mulvaney, Nsalambi V. Nkongolo, Jason K. Norsworthy, Binaya Parajuli, Christopher Pelzer, Cara Peterson, Hanna Poffenbarger, Pratima Poudel, Mark S. Reiter, Matt Ruark, Matthew R. Ryan, Spencer Samuelson, John E. Sawyer, Sarah Seehaver, Lovreet S. Shergill, Yogendra Raj Upadhyaya, Mark VanGessel, Ashley L. Waggoner, John M. Wallace, Samantha Wells, Charles White, Bethany Wolters, Alex Woodley, Rongzhong Ye, Eric Youngerman, Brian A. Needelman, Steven B. Mirsky
Publikováno v: Scientific Data, Vol 11, Iss 1, Pp 1-7 (2024)
Abstract Winter cover crop performance metrics (i.e., vegetative biomass quantity and quality) affect ecosystem services provisions, but they vary widely due to differences in agronomic practices, soil properties, and climate. Cereal rye (Secale cere
Externí odkaz: https://doaj.org/article/62cb317bc7a74b2d8c8ac3c1ef32f1d0
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4
Akademický článek
Evaluating Critical Nitrogen Dilution Curves for Assessing Maize Nitrogen Status across the US Midwest
Autor: Hui Shao, Yuxin Miao, Fabián G. Fernández, Newell R. Kitchen, Curtis J. Ransom, James J. Camberato, Paul R. Carter, Richard B. Ferguson, David W. Franzen, Carrie A. M. Laboski, Emerson D. Nafziger, John E. Sawyer, John F. Shanahan
Publikováno v: Agronomy, Vol 13, Iss 7, p 1948 (2023)
Plant N concentration (PNC) has been commonly used to guide farmers in assessing maize (Zea mays L.) N status and making in-season N fertilization decisions. However, PNC varies based on the development stage. Therefore, a relationship between biomas
Externí odkaz: https://doaj.org/article/dd0564f1b50741e79acd12a212e58ec8
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5
Akademický článek
Corn Nitrogen Nutrition Index Prediction Improved by Integrating Genetic, Environmental, and Management Factors with Active Canopy Sensing Using Machine Learning
Autor: Dan Li, Yuxin Miao, Curtis J. Ransom, Gregory Mac Bean, Newell R. Kitchen, Fabián G. Fernández, John E. Sawyer, James J. Camberato, Paul R. Carter, Richard B. Ferguson, David W. Franzen, Carrie A. M. Laboski, Emerson D. Nafziger, John F. Shanahan
Publikováno v: Remote Sensing, Vol 14, Iss 2, p 394 (2022)
Accurate nitrogen (N) diagnosis early in the growing season across diverse soil, weather, and management conditions is challenging. Strategies using multi-source data are hypothesized to perform significantly better than approaches using crop sensing
Externí odkaz: https://doaj.org/article/e02d778071434c8b8b9a5ae8d79759e2
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