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U.S. West: Foliar‐applied nitrogen fertilizers in spring wheat production
Author(s) -
Walsh Olga S.,
Christiaens Robin J.,
Pandey Arjun
Publication year - 2013
Publication title -
crops and soils
Language(s) - English
Resource type - Journals
eISSN - 2325-3606
pISSN - 0162-5098
DOI - 10.2134/cs2013-46-4-8
Subject(s) - state (computer science) , research center , agriculture , agricultural experiment station , library science , citation , center (category theory) , agricultural productivity , agricultural economics , political science , sociology , geography , mathematics , archaeology , computer science , law , economics , algorithm , chemistry , crystallography
The Northern Great Plains region is traditionally recognized worldwide for production of premium quality wheat. Spring wheat continues to be the key cereal crop for the region. While nitrogen (N) is considered the most common nutrient limiting yield of wheat and other cereal crops, N use efficiency (NUE) is currently only about 40 to 50% for most crop production systems (Gupta and Khosla, 2012). A substantial increase from the previously estimated 33% NUE in the late 1990s (Raun and Johnson, 1999) is primarily due to advances in precision nutrient management. Developing an effective N management system, improving N recommendations, and increasing NUE are central issues that should be addressed to maintain and increase the sustainability of wheat production in the future. Spring wheat’s primary value is its quality, represented by high grain protein content. Thus, when evaluating use efficiency for spring wheat, combining yield and protein into protein yield, as proposed by Jackson (2001), makes sense because N is vital to both yield and protein production. Continuous advances in novel fertilizer technologies, and the active promotion of liquid products as more efficient, have renewed growers’ interest in liquid fertilizers.