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Spatial Influence of Topographical Factors on Yield of Potato (Solanum Tuberosum L.) in Central Sweden

Author:
  • Andreas Persson
  • Petter Pilesjö
  • Lars Eklundh
Publishing year: 2005
Language: English
Pages: 341-357
Publication/Series: Precision Agriculture
Volume: 6
Issue: 4
Document type: Journal article
Publisher: Springer

Abstract english

This study has evaluated the sampling density for creation of high-resolution digital elevation models (DEMs) for precision agriculture purposes. The relationships between yield and topographical factors were investigated in a study area located in the central Sweden province of Dalarna. The DEM data sampling was carried out with a RTK-GPS system. A dense sampling scheme was employed and data was divided into two for both interpolation and validation. Kriging interpolation was used for DEM generation. From the DEM, topographical parameters were extracted and topographical indices were estimated. The indices were calculated with slope length and its vertical and horizontal components. The drainage area for a point of interest and the relationship of this area to the total drainage area were also estimated. The relationship of yield and the topographical parameters and indices was investigated using
both circular and spatial statistics. A spatial regression was used to calculate a model for the relationship. Up to 20% of the yield could be explained in the final model for one of the fields.

Keywords

  • Physical Geography
  • Potato
  • Yield
  • Topographical indices
  • DEM
  • Spatial regression
  • Drainage area

Other

Published
  • ISSN: 1385-2256
E-mail: andreas [dot] persson [at] nateko [dot] lu [dot] se

Senior lecturer

Dept of Physical Geography and Ecosystem Science

+46 46 222 42 62

GIS-centrum 103

16

Senior lecturer

Centre for Geographical Information Systems (GIS Centre)

+46 46 222 42 62

16

Teaching staff

Dept of Physical Geography and Ecosystem Science

16

Department of Physical Geography and Ecosystem Science
Lund University
Sölvegatan 12
S-223 62 Lund
Sweden

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