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Moisture content effect in the relationship between apparent electrical conductivity and soil attributes Agronomy
Costa, Marcelo Marques; Queiroz, Daniel Marçal de; Pinto, Francisco de Assis de Carvalho; Reis, Elton Fialho dos; Santos, Nerilson Terra.
To map the spatial variability of a field to define the variable rate application, an intensive sampling of the soil-plant system is necessary. The apparent soil electrical conductivity (ECa) has been used for soil mapping because it correlates well with soil attributes, allows for dense sampling and can be obtained at low cost. However, ECa is influenced by soil moisture content, and the variability of this attribute can reduce the reliability of the ECa maps to explain the physical and chemical soil attributes. The objective of this study was to identify conditions that maximize the correlations between the ECa and the soil attributes. The results show that the mean soil moisture content of soil sampled on different dates was correlated with the mean of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 5.03.00.00-8 precision agriculture; Temporal variability; Soil moisture content.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/18342
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