Campus Units

Agronomy

Document Type

Conference Proceeding

Publication Version

Published Version

Publication Date

2010

Journal or Book Title

Proceedings of the 40th North Central Extension-Industry Soil Fertility Conference

Volume

26

First Page

97

Last Page

108

Conference Title

40th North Central Extension-Industry Soil Fertility Conference

Conference Date

November 17-18, 2010

City

Des Moines, IA

Abstract

Precision agriculture technologies are an integral part of many crop production operations. However, implementation for N application has lagged, primarily due to lack of a viable system for variable N rate decisions. Active canopy sensors have been developed as a tool to determine plant N stress deficiency and provide an on-the-go decision for implementing variable rate. Two general approaches could be implemented. One is to plan on conducting canopy sensing each year, with a reduced N rate applied preplant, at planting, or early sidedress and then sensing conducted at mid-vegetative growth to determine additional application need. A second is to conduct sensing only if conditions result in N loss from the primary N application, or other factors change expected crop requirements. Both approaches could address variable N fertilization and seasonal circumstances.

Comments

This is a proceeding from 40th North Central Extension-Industry Soil Fertility Conference 26 (2010): 97. Posted with permission.

Copyright Owner

International Plant Nutrition Institute

Language

en

File Format

application/pdf

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Article Location

 
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