Establishing management zones using soil electrical conductivity and other soil properties by the fuzzy clustering technique

Authors

  • José Paulo Molin USP; ESALQ; Depto. de Engenharia Rural
  • Cesar Nunes de Castro USP; ESALQ; Programa de Pós-Graduação em Máquinas Agrícolas

DOI:

https://doi.org/10.1590/S0103-90162008000600001

Keywords:

precision agriculture, soil physical properties, fuzziness

Abstract

The design of site-specific management zones that can successfully define uniform regions of soil fertility attributes that are of importance to crop growth is one of the most challenging steps in precision agriculture. One important method of so proceeding is based solely on crop yield stability using information from yield maps; however, it is possible to accomplish this using soil information. In this study the soil was sampled for electrical conductivity and eleven other soil properties, aiming to define uniform site-specific management zones in relation to these variables. Principal component analysis was used to group variables and fuzzy logic classification was used for clustering the transformed variables. The importance of electrical conductivity in this process was evaluated based on its correlation with soil fertility and physical attributes. The results confirmed the utility of electrical conductivity in the definition of management zones and the feasibility of the proposed method.

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Published

2008-12-01

Issue

Section

Agricultural Engineering

How to Cite

Establishing management zones using soil electrical conductivity and other soil properties by the fuzzy clustering technique . (2008). Scientia Agricola, 65(6), 567-573. https://doi.org/10.1590/S0103-90162008000600001