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	Provedor de dados REA (1) Autor Camacho-Tamayo,Jesús H. (1) Cortés,César A. (1) Medina,Cecilia (1) Palavra-chave Andisol (1) Cluster analysis (1) Compaction (1) Principal components (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2012 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Soil penetration resistance analysis by multivariate and geostatistical methods REA Medina,Cecilia; Camacho-Tamayo,Jesús H.; Cortés,César A.. The penetration resistance (PR) is a soil attribute that allows identifies areas with restrictions due to compaction, which results in mechanical impedance for root growth and reduced crop yield. The aim of this study was to characterize the PR of an agricultural soil by geostatistical and multivariate analysis. Sampling was done randomly in 90 points up to 0.60 m depth. It was determined spatial distribution models of PR, and defined areas with mechanical impedance for roots growth. The PR showed a random distribution to 0.55 and 0.60 m depth. PR in other depths analyzed showed spatial dependence, with adjustments to exponential and spherical models. The cluster analysis that considered sampling points allowed establishing areas with compaction problem... Tipo: Info:eu-repo/semantics/article Palavras-chave: Compaction; Cluster analysis; Principal components; Andisol. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000100010 Registros recuperados: 1 Primeira ... 1 ... Última

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