Wheat yield population response to variable rate N fertilization strategies using active NDVI sensors

G. J. Schwab, E. M. Pena-Yewtukhiw, O. Wendroth, L. W. Murdock, T. Stombaugh

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

The goal of precision agriculture is to vary inputs to match the spatial yield potential of a site, thus minimizing input cost while maximizing economic return to the producer. Historically, the scale of precision fertilization has been limited to the size of the applicator, but innovations have made it possible to variably apply fertilizer on a 0.56 m2 basis using field size equipment and active, realtime NDVI sensors. An experiment was conducted in Kentucky, USA to evaluate the effect of different nitrogen fertilization strategies on wheat (cv. Declaration) yield and yield population across a variable landscape. There were four treatments with four replications. Nitrogen fertilizer application was varied on a 0.56 m2 grid based on canopy NDVI for two of the treatments, while uniform applications of two rates were the other two treatments. Results indicated that the imposed treatments did not only affect the average yield, but also affected the characteristics of the yield populations and the spatial N use efficiency.

Original languageEnglish
Title of host publicationPrecision Agriculture 2005
Pages235-242
Number of pages8
StatePublished - 2005
Event5th European Conference on Precision Agriculture, ECPA 2005 - Uppsala, Sweden
Duration: Jun 9 2005Jun 12 2005

Publication series

NamePrecision Agriculture 2005, ECPA 2005

Conference

Conference5th European Conference on Precision Agriculture, ECPA 2005
Country/TerritorySweden
CityUppsala
Period6/9/056/12/05

Keywords

  • NDVI
  • Wheat nitrogen management
  • Yield population distribution

ASJC Scopus subject areas

  • Agronomy and Crop Science

Fingerprint

Dive into the research topics of 'Wheat yield population response to variable rate N fertilization strategies using active NDVI sensors'. Together they form a unique fingerprint.

Cite this