Söderström, Mats
- Department of Soil Sciences, Swedish University of Agricultural Sciences
Abstract
In order to describe the degree of within-field spatial variation of phosphorus, a spatial key indicator for P was developed. It was applied to data at two different geographical scales. In the first case, a general overview is given of the within-field phosphorus variability in central Sweden based on a very large number of soil analyses. In the second case, detailed data from nine project farms were compiled and specific examples are discussed in-depth. The economic potential of variable-rate P fertilisation is assessed. The examples show that the commonly used, traditional fertiliser recommendations lead to substantial over-application of phosphorus in parts of the fields. This, as well as the economic consequences, is visualised by the key indicator.
Keywords
economic model; phosphorus; spatial key indicator; within-field variability
Published in
Title: Precision agriculture '05
Publisher: Wageningen academic publishers
Conference
5th European Conference on Precision Agriculture/2nd European Conference Precision Livestock Farming
SLU Authors
Nyberg, Anna
- Department of Soil Sciences, Swedish University of Agricultural Sciences
- Department of Soil Sciences, Swedish University of Agricultural Sciences
Linden, Börje
- Department of Soil Sciences, Swedish University of Agricultural Sciences
- Department of Soil Sciences, Swedish University of Agricultural Sciences
UKÄ Subject classification
Agricultural Science
Publication identifier
- DOI: https://doi.org/10.3920/978-90-8686-549-9_119
- ISBN: 90-76998-69-8
Permanent link to this page (URI)
https://res.slu.se/id/publ/7304