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Title: Stability of patterns of apparent electrical conductivity in dry versus wet soil conditions
Authors: Serrano, João
Peça, José
Shahidian, Shakib
Marques da Silva, José Rafael
Editors: Stafford, John
Keywords: apparent soil electrical conductivity
soil moisture
Issue Date: Jul-2011
Citation: Serrano, J.; Peça,, J.; Shahidian, S.; Marques da Silva, J. (2011). Stability of patterns of apparent electrical conductivity in dry versus wet soil conditions. In John V Stafford (ed.), Precision Agriculture 2011, Ampthill, UK, Papers presented at the 8th European Conference on Precision Agriculture 2011, Prague, Czech Republic, 11-14 July 2011: 31-42. (ISBN: 978-80-904830-5-7)
Abstract: The general objective of this study was to evaluate the stability of patterns of apparent electrical conductivity (ECa) in dry versus wet soil conditions in shallow soils, typically used for pastures in Mediterranean conditions of southern region of Portugal. The statistical analysis of apparent electrical conductivity resulted in a significant correlation coefficient (R = 0.88) between dry and wet soil conditions. A multi-variate regression was carried out using the parameters that show greater correlation with ECa: P, K, organic matter, pH, relative elevation and clay content. The results show, in dry and wet conditions, that the effect is significant (R=0.79 and R=0.82, respectively). This indicates the temporal stability of ECa patterns under different soil moisture contents, which is relevant with respect to the time when a field should be scanned and is important for using ECa as a decision support tool in precision agriculture.
Type: article
Appears in Collections:ERU - Artigos em Livros de Actas/Proceedings
MED - Artigos em Livros de Actas/Proceedings

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