Variable rate irrigation and nitrogen fertilization of maize across landscape positions

R. Ferguson, M. Schmer, T. Shaver, B. Wienhold, S. Van Donk, S. Irmak, D. Rudnick, N. Ward, V. Jin, D. Francis, A. Bereuter, L. Hendrickson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish (US)
Title of host publicationPrecision Agriculture 2013 - Papers Presented at the 9th European Conference on Precision Agriculture, ECPA 2013
Pages729-736
Number of pages8
StatePublished - 2013
Event9th European Conference on Precision Agriculture, ECPA 2013 - Lleida, Catalonia, Spain
Duration: Jul 7 2013Jul 11 2013

Publication series

NamePrecision Agriculture 2013 - Papers Presented at the 9th European Conference on Precision Agriculture, ECPA 2013

Conference

Conference9th European Conference on Precision Agriculture, ECPA 2013
Country/TerritorySpain
CityLleida, Catalonia
Period7/7/137/11/13

All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science

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