Zobrazeno 1 - 10
of 231
pro vyhledávání: '"William R. Raun"'
Autor:
Whoi Cho, Dayton M. Lambert, B. Wade Brorsen, Chellie H. Maples, Alimamy Fornah, William R. Raun
Publikováno v:
Agrosystems, Geosciences & Environment, Vol 6, Iss 2, Pp n/a-n/a (2023)
Abstract This paper proposes a Bayesian multilevel modeling approach to incorporate response parameters from published studies into crop yield response estimation procedures when nonlimiting or limiting treatment levels are omitted or limited in agro
Externí odkaz:
https://doaj.org/article/7533be68e02c4c79a346822f0ec5cceb
Publikováno v:
Agrosystems, Geosciences & Environment, Vol 2, Iss 1, Pp 1-7 (2019)
Core Ideas Break‐even corn yield increase for a US$50 Greenseeder hand planter is 1.12%. A US$50 Greenseeder hand planter needs to use 12.19% fewer seeds, and reduces labor man‐days by 38.66%. If used for fertilization, the Greenseeder hand plant
Externí odkaz:
https://doaj.org/article/0ed887f4dd6340acb6b0dd9671c8296f
Publikováno v:
Agrosystems, Geosciences & Environment, Vol 2, Iss 1, Pp 1-8 (2019)
Core Ideas Cereal N use efficiency was estimated at 35, 41, 30, and 21% for the world, the United States, China, and India, respectively. There was a trend for increased N fertilizer consumption for agricultural use. Best N fertilizer management prac
Externí odkaz:
https://doaj.org/article/7ec696e9814242f0aa8e886b15d4ec9f
Autor:
Lawrence Aula, Peter Omara, Fikayo B. Oyebiyi, Elizabeth Eickhoff, Jonathan Carpenter, Eva Nambi, Alimamy Fornah, William R. Raun
Publikováno v:
Agrosystems, Geosciences & Environment, Vol 4, Iss 1, Pp n/a-n/a (2021)
Abstract Preplant nitrogen (N) application, which involves placing nutrients in the soil before seeding, has been an integral part of crop production systems for decades. Some producers are known to apply N at least 21 d before planting. This may inc
Externí odkaz:
https://doaj.org/article/0f8d56943de24d518aee1170b3985b0c
Autor:
Lawrence Aula, Peter Omara, Elizabeth Eickhoff, Fikayo Oyebiyi, Jagmandeep S. Dhillon, William R. Raun
Publikováno v:
Agrosystems, Geosciences & Environment, Vol 3, Iss 1, Pp n/a-n/a (2020)
Abstract In many developing countries, crop production is achieved with little or no application of fertilizer N. Understanding grain yield trends as new winter wheat cultivars (Triticum aestivum L.) are released and grown under different N managemen
Externí odkaz:
https://doaj.org/article/9da71cf1680f43738a0f610411b1a814
Publikováno v:
Agrosystems, Geosciences & Environment, Vol 3, Iss 1, Pp n/a-n/a (2020)
Abstract Global nitrogen use efficiency (NUE) for cereal production is estimated to be only 33%. Providing producers with efficient methods to increase the effectiveness of their N applications is integral to agricultural sustainability and environme
Externí odkaz:
https://doaj.org/article/99bd7f2175b84bb49d17eeb133ecfa21
Publikováno v:
International Journal of Agronomy, Vol 2019 (2019)
Livestock manure is a common soil amendment for crop-livestock production systems. However, the efficiency of crop nitrogen (N) uptake from the manure-amended soil may not equate with that from inorganic N sources. The objective of this paper was to
Externí odkaz:
https://doaj.org/article/c4a7c3ac4f71425992789d983ef27a49
Publikováno v:
Agronomy, Vol 10, Iss 10, p 1497 (2020)
Fertilization is one of the most common agricultural practices to achieve high yield. Although microbes play a critical role in nutrient cycling and organic matter decomposition, knowledge of the long-term responses of the soil bacterial community to
Externí odkaz:
https://doaj.org/article/2fa7e689a4934aff884a99a3e0666315
Publikováno v:
Agronomy, Vol 10, Iss 8, p 1157 (2020)
Improvement of nitrogen use efficiency (NUE) via active optical sensors has gained attention in recent decades, with the focus of optimizing nitrogen (N) input while simultaneously sustaining crop yields. To the authors’ knowledge, a comprehensive
Externí odkaz:
https://doaj.org/article/75eab4c51370447caa20aab9e7dbc90b
Autor:
Peter Omara, Lawrence Aula, Fikayo B. Oyebiyi, Elizabeth M. Eickhoff, Jonathan Carpenter, William R. Raun
Publikováno v:
Agronomy, Vol 10, Iss 9, p 1241 (2020)
Biochar (B) has shown promise in improving crop productivity. However, its interaction with inorganic nitrogen (N) in temperate soils is not well-studied. The objective of this paper was to compare the effect of fertilizer N-biochar-combinations (NBC
Externí odkaz:
https://doaj.org/article/a3f78a3624c245e5b0d42eeedce6d172