Variable rate application of side-dress nitrogen on cotton in Georgia, USA

V. Liakos; G. Vellidis; G. Harris; R. Hill; H. Henry

Variable rate application of side-dress nitrogen on cotton in Georgia, USA

In: Precision agriculture '13

Authors:

V. Liakos

V. Liakos ¹Laboratory of Farm Mechanisation, University of Thessaly, Greece; bill.406@hotmail.com

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G. Vellidis

G. Vellidis ²Crop & Soil Science Department, University of Georgia, USA

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G. Harris

G. Harris ²Crop & Soil Science Department, University of Georgia, USA

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R. Hill

R. Hill ²Crop & Soil Science Department, University of Georgia, USA

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H. Henry

H. Henry ²Crop & Soil Science Department, University of Georgia, USA

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Type:: Chapter

Pages:: 435–442

DOI:: https://doi.org/10.3920/9789086867783_055

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Uniform application of fertilizers is inefficient as it does not consider field variability. During the last decade, variable rate application (VRA) has become increasingly popular. The goal of this study was to asses VRA strategies for applying side-dress nitrogen on cotton. The experiment was done in two cotton fields in southern Georgia, USA. The experimental design consisted of two variable rate application strategies and a control. Before cotton planting, the apparent electrical conductivity (ECa) was measured. Plant vigor was estimated by measuring NDVI with an optical sensor. The results showed that the high yield is correlated with high nitrogen rates and the ECa of the soil and that profitability increases by using VRA.

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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 application of side-dress nitrogen on cotton in Georgia, USA

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Precision agriculture '13

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