TY - GEN
T1 - Variable rate irrigation and nitrogen fertilization of maize across landscape positions
AU - Ferguson, R.
AU - Schmer, M.
AU - Shaver, T.
AU - Wienhold, B.
AU - Van Donk, S.
AU - Irmak, S.
AU - Rudnick, D.
AU - Ward, N.
AU - Jin, V.
AU - Francis, D.
AU - Bereuter, A.
AU - Hendrickson, L.
PY - 2013
Y1 - 2013
N2 - Interactions of water and nitrogen (N) supply for crop production can be quite complex across field landscapes. The availability of variable rate fertilization systems, and now variable rate irrigation systems, gives crop producers the opportunity to adjust inputs of water and N according to variation in soil properties. A study conducted across Nebraska, USA, evaluated interactions of water and N supply with landscape features for irrigated maize in 2011 and 2012. Crop yield response to treatments varied with year, as 2012 experienced severe drought conditions. There was evidence from one site/year that irrigation water use efficiency and agronomic efficiency were correlated, with lower productivity areas of fields requiring different levels of water and N than more productive areas.
AB - Interactions of water and nitrogen (N) supply for crop production can be quite complex across field landscapes. The availability of variable rate fertilization systems, and now variable rate irrigation systems, gives crop producers the opportunity to adjust inputs of water and N according to variation in soil properties. A study conducted across Nebraska, USA, evaluated interactions of water and N supply with landscape features for irrigated maize in 2011 and 2012. Crop yield response to treatments varied with year, as 2012 experienced severe drought conditions. There was evidence from one site/year that irrigation water use efficiency and agronomic efficiency were correlated, with lower productivity areas of fields requiring different levels of water and N than more productive areas.
KW - Landscape position
KW - Variable rate irrigation
KW - Variable rate nitrogen
UR - http://www.scopus.com/inward/record.url?scp=84893399623&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84893399623&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84893399623
SN - 9789086862245
T3 - Precision Agriculture 2013 - Papers Presented at the 9th European Conference on Precision Agriculture, ECPA 2013
SP - 729
EP - 736
BT - Precision Agriculture 2013 - Papers Presented at the 9th European Conference on Precision Agriculture, ECPA 2013
T2 - 9th European Conference on Precision Agriculture, ECPA 2013
Y2 - 7 July 2013 through 11 July 2013
ER -