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

Variable rate irrigation and nitrogen fertilization of maize across landscape positions

In: Precision agriculture '13

Authors:

R. Ferguson

R. Ferguson ¹Agronomy & Horticulture Dept., University of Nebraska-Lincoln, Lincoln, NE, USA; rferguson@unl.edu

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M. Schmer

M. Schmer ²USDA-ARS Agroecosystems Management Research Unit, Lincoln, NE, USA

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T. Shaver

T. Shaver ³West Central Research & Extension Center, University of Nebraska-Lincoln, North Platte, NE, USA

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B. Wienhold

B. Wienhold ²USDA-ARS Agroecosystems Management Research Unit, Lincoln, NE, USA

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S. Van Donk

S. Van Donk ³West Central Research & Extension Center, University of Nebraska-Lincoln, North Platte, NE, USA

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S. Irmak

S. Irmak ⁴Biological Systems Engineering Dept, University of Nebraska-Lincoln, Lincoln, NE, USA

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D. Rudnick

D. Rudnick ⁴Biological Systems Engineering Dept, University of Nebraska-Lincoln, Lincoln, NE, USA

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N. Ward

N. Ward ¹Agronomy & Horticulture Dept., University of Nebraska-Lincoln, Lincoln, NE, USA; rferguson@unl.edu

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V. Jin

V. Jin ²USDA-ARS Agroecosystems Management Research Unit, Lincoln, NE, USA

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D. Francis

D. Francis ²USDA-ARS Agroecosystems Management Research Unit, Lincoln, NE, USA

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A. Bereuter

A. Bereuter ²USDA-ARS Agroecosystems Management Research Unit, Lincoln, NE, USA

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, and

L. Hendrickson

L. Hendrickson ⁵John Deere Technology Innovation Center, Champaign, IL, USA

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Type:: Chapter

Pages:: 729–736

DOI:: https://doi.org/10.3920/9789086867783_092

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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.

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Precision agriculture '13

E-Book ISBN:: 9789086867783

Publisher:: Wageningen Academic

Print Publication Date:: 01 Nov 2013

Subjects
- Life Sciences
  - General
  - Agriculture & Environment

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Variable rate irrigation and nitrogen fertilization of maize across landscape positions

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Precision agriculture '13

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