TY - JOUR
T1 - Separating nitrogen fertilizer and irrigation water application in an alternating furrow irrigation system for maize production
AU - Han, Kun
AU - Zhou, Chunju
AU - Li, Na
AU - Schmidt, John P.
AU - Dell, Curtis J.
AU - Wang, Linquan
N1 - Funding Information:
Acknowledgments This study was supported by the research grants from Chinese National Natural Science Fund (30571085, 2006), and by the program of innovation team (2010) of the Northwest A&F University, China. We specially thank Dr. Peter Kleinman in USDA-ARS for editing this manuscript.
Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013/5
Y1 - 2013/5
N2 - The efficient use of water and nitrogen represents a primary concern to agricultural production in Northwest China. A 2-year field experiment was conducted to assess the separation of nitrogen (N) fertilizer and irrigation water with alternating furrow irrigation (SNWAFI) in a maize (Zea mays L.) production system. Irrigation water use efficiency and nitrogen use efficiency with SNWAFI were generally greater than with conventional irrigation and fertilization (CIF). Response surfaces indicated that maximum maize yields were obtained with 238 kg urea-N ha-1 and 106 mm irrigation water in 2008 and 244 kg urea-N ha-1 and 95 mm of irrigation water in 2009. When the predicted yields were highest (6,384 and 6,549 kg ha-1), water use efficiency, N uptake, and N use efficiency were greater with SNWAFI than CIF. Conversely, soil NO3-N change during maize growing season decreased with SNWAFI compared CIF. With SNWAFI, optimizing irrigation water and N fertilizer rates can maximize yield, save irrigation water, and reduce N leaching.
AB - The efficient use of water and nitrogen represents a primary concern to agricultural production in Northwest China. A 2-year field experiment was conducted to assess the separation of nitrogen (N) fertilizer and irrigation water with alternating furrow irrigation (SNWAFI) in a maize (Zea mays L.) production system. Irrigation water use efficiency and nitrogen use efficiency with SNWAFI were generally greater than with conventional irrigation and fertilization (CIF). Response surfaces indicated that maximum maize yields were obtained with 238 kg urea-N ha-1 and 106 mm irrigation water in 2008 and 244 kg urea-N ha-1 and 95 mm of irrigation water in 2009. When the predicted yields were highest (6,384 and 6,549 kg ha-1), water use efficiency, N uptake, and N use efficiency were greater with SNWAFI than CIF. Conversely, soil NO3-N change during maize growing season decreased with SNWAFI compared CIF. With SNWAFI, optimizing irrigation water and N fertilizer rates can maximize yield, save irrigation water, and reduce N leaching.
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U2 - 10.1007/s10705-013-9580-y
DO - 10.1007/s10705-013-9580-y
M3 - Article
AN - SCOPUS:84883786341
SN - 1385-1314
VL - 96
SP - 107
EP - 122
JO - Nutrient Cycling in Agroecosystems
JF - Nutrient Cycling in Agroecosystems
IS - 1
ER -
