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handle: 10261/61530
[ES] La relación entre el desarrollo del cultivo y las características del suelo puede dar criterios de manejo diferenciado de la parcela de cultivo, paso inicial para la agricultura de precisión. En este trabajo se estudia la variabilidad del desarrollo del maíz en una parcela comercial de regadío de 60 ha y su relación con varios rasgos edáficos. La información sobre el cultivo proviene de estimaciones del índice de área foliar a partir de imágenes Quickbird de 2004 y 2005. La de suelos, georreferenciada, consta de medidas de elevación y de sensor electromagnético, así como de determinaciones de conductividad eléctrica en extracto 1:5, granulometría y contenido de K, Na, P y Mg en muestras superficiales. Con la ayuda de un SIG se ha analizado conjuntamente la información procedente de las imágenes de satélite, la cartografía de los rasgos del suelo prospectados en campo, y datos de rendimiento. Ello ha permitido establecer zonas donde interesa intensificar el estudio de suelos y determinar la relación entre variabilidad del cultivo, rasgos edáficos y rendimiento.
[EN] The links between crop development and soil parameters constitute a key criterion to plan a distinct management within field crops, what involves the basis to apply precision agriculture techniques. In the present work, the within field variability of crop development is studied in a commercial pivot of about 60 ha of maize, and its relation with different soil parameters and characteristics. Information about crop growth has been extracted estimating leaf area index from Quickbird imagery of 2004 and 2005 years. Information abut soil parameters were retrieved from field sampling and georeferenced measurements of elevation, electrical conductivity, granulometry, and the presence of given elements (K, Na, P, Mg). Using an GIS a joint analysis of spatial information provided by satellite imagery, soil maps derived form field measurements and crop yield. This allowed establishing areas within the field to study soil properties more in depth and to determine the links existing between variability in crop development, soil properties and yield.
Este trabajo es un resultado del proyecto INIA RTA2005-00230. El primer autor disfrutó de una beca predoctoral INIA.
8 Pags., 5 Figs.
Peer reviewed
precision farming, Agricultura de precisión, Quickbird, Precision farming, sensor electromagnético, electromagnetic sensor, LAI, maíz
precision farming, Agricultura de precisión, Quickbird, Precision farming, sensor electromagnético, electromagnetic sensor, LAI, maíz
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