Cokriging to estimate levels of calcium and magnesium in a Rhodic Hapludox
Authors
Eduardo Bottega
Universidade Federal de Viçosa
Samuel Silva
Universidade Federal de Viçosa
Marcelo Costa
Universidade Federal de Viçosa
Simone Bottega
Universidade Federal da Grande Dourados
Keywords:
Geostatistics, Cross-variogram, Correlation, Calcium and Magnesium content
Abstract
Sought, with this study, estimating, through the use of cokriging, values of calcium and magnesium, using as covariate pH. In a Rhodic Hapludox, sampled the layer of 0-0.2 m, using the grid of 25 x 25 m, totaling 60 points from 5.02 ha. Was held, initially, descriptive analysis and correlation, and subsequently, geostatistical analysis to identify the spatial dependence of variables. Using the technique of cokriging pH values were efficient in the estimation of Ca and Mg, due to the high correlation between this covariate and the variables to be estimated.
