Simulated N-leaching under site specific compared to uniform N application

Abstract

The difference in nitrate leaching between site-specific and homogenous N fertilization was estimated with a C, N, water and heat model for a loamy sand and a clay soil. The economic optimum fertilization rate for winter wheat was 175-200 kg N ha-1 on both soils. At this rate the nitrate leaching increased almost linearly with fertilization rate. The leaching from a field where all sites got optimal fertilization rates was only slightly smaller compared to if all sites would have been fertilized at a uniform rate

Published in

Title: Book of abstracts 5 ECPA-2 ECPLF

Conference

5th European Conference on Precision Agriculture

SLU Authors

• Delin, Sofia

  • Department of Soil and Environment, Swedish University of Agricultural Sciences
    

• Eckersten, Henrik

  • Department of Crop Production Ecology, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Agricultural Science
Environmental Sciences and Nature Conservation

Permanent link to this page (URI)

https://res.slu.se/id/publ/20815