Iron oxides characterization of oxisol clay fraction in areas with different harvesting systems in Jaboticabal region, SP

Abstract

In order to evaluate the effects of sugarcane harvesting systems in the evolution of the mineralogical properties and their relations with the chemicals properties, the soil will be sampled at the intersection point of two georeferenced grid with dimensions of 100 x 100 m, and regular intervals of 10 m within samples points, for 121 points in each grid. The samples will be submitted to the laboratory standard tests and the data will be analized by the descriptive statistics and calculating the average, median, variance, standard deviation, skewness, kurtosis, maximum, minimum, coefficient of correlation, and distribution type. The spatial dependence analysis will be made with geostatistics methods, using the semivariograms. Interpolated values through kriging will be used, together with the measured values, for the maps construction of the properties studied. (AU)