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vol.11 número1EFFECTS OF SALINE WATER ON TOMATO UNDER SUBSURFACE DRIP IRRIGATION: NUTRITIONAL AND FOLIAR ASPECTSHOW SOIL FORMING PROCESSES DETERMINE SOIL-BASED VITICULTURAL ZONING índice de autoresíndice de materiabúsqueda de artículos
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Journal of soil science and plant nutrition

versión On-line ISSN 0718-9516

Resumen

CUCUNUBA-MELO, J.L; ALVAREZ-HERRERA, J.G  y  CAMACHO-TAMAYO, J.H. IDENTIFICATION OF AGRONOMIC MANAGEMENT UNITS BASED ON PHYSICAL ATTRIBUTES OF SOIL. J. Soil Sci. Plant Nutr. [online]. 2011, vol.11, n.1, pp.87-99. ISSN 0718-9516.  http://dx.doi.org/10.4067/S0718-95162011000100008.

Oil palm (Elaeis guineensis Jacq) is an alternative for the development of productive systems in the tropics. By determining the spatial variability of physical characteristics of soil, specific recommendations for certain areas within a zone can be made. Geostatistical analysis can determine the existence and characteristics of the spatial distribution and is an appropriate tool for analyzing the spatial variability of soil properties. The aim of this study was to determine areas with homogeneous physical characteristics in order to establish agricultural management units, using geostatistical techniques. For this study, 62 samples were collected in 10.6 ha in the municipality of El Reten (Magdalena, Colombia). The properties analyzed were: content of sand, silt and clay, particle density, bulk density, total porosity, gravimetric and volumetric water content, hydraulic conductivity and infiltration rate. All properties showed spatial correlation, with adjustments to semivariograms theoretical models, mostly to the spherical model, with ranges between 84.87 and 218.60 m and moderate to strong spatial dependence. The contour maps obtained through ordinary kriging, allowed for the identification of the relationship between the different physical properties of the soil and subsequent classification to determine the Agronomic Management Units (AMU).

Palabras clave : geoestatistics; semivariogram; kriging; precision farming; Elaeis guineensis Jacq.

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