Determinación de zonas de manejo agrícola basadas en el rendimiento de maíz y su relación con atributos edáficos en la altillanura plana
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Alarcón Jiménez, Milton Freddy
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El objetivo de este estudio fue determinar zonas de manejo agrícola basadas en el rendimiento de maíz y su relación con atributos edáficos (químicos y físicos) en la altillanura plana. Se diseñaron mallas rectangulares de 70 * 70 m y dos profundidades de muestreo (0 a 10 cm y 10 a 20 cm) en un lote de 37 ha. El análisis descriptivo mostró alta acidez y contenidos de Al, valores de RP (1.32 MPa) a valores altos de RP (1.98 MPa), confirmando la existencia de una capa dura en la segunda profundidad. La zona presento bajos contenidos de elementos menores. La mayoría de los atributos estudiados presentaron dependencia espacial. Las zonas de manejo se determinaron por análisis clúster, índice de suelo por coeficiente de variación e índice de suelo por componentes principales para generar recomendaciones de manejo sitio específico para el cultivo del maíz.
Abstract. The objective of this study was to determine agricultural management zones based on corn yield and its relationship with soil attributes (chemical and physical) in the flat high plains. Were designed rectangular mesh 70 * 70 m and two sampling depths (0-10 cm and 10-20 cm) in a batch of 37 hectares. Descriptive analysis showed high acidity and content of Al, RP values of (1.32 MPa) and high values of RP (1.98 MPa), confirming the existence of a hard coating on the second depth. Low content of minor elements, most of the attributes studied showed spatial dependence, the management zones were determined by cluster analysis, soil index by coefficient of variation and soil index by principal components to generate site-specific management recommendations for the crop corn.
Abstract. The objective of this study was to determine agricultural management zones based on corn yield and its relationship with soil attributes (chemical and physical) in the flat high plains. Were designed rectangular mesh 70 * 70 m and two sampling depths (0-10 cm and 10-20 cm) in a batch of 37 hectares. Descriptive analysis showed high acidity and content of Al, RP values of (1.32 MPa) and high values of RP (1.98 MPa), confirming the existence of a hard coating on the second depth. Low content of minor elements, most of the attributes studied showed spatial dependence, the management zones were determined by cluster analysis, soil index by coefficient of variation and soil index by principal components to generate site-specific management recommendations for the crop corn.