Variabilidade espacial da condutividade hidráulica no sistema plantio direto e plantio convencional irrigados por aspersão na cultura do feijão.

Abstract

The spatial variability of saturated hydraulic conductivity (Ko) was measured on field for non tillage and conventional tillage systems. The measurements had been carried out by means of a constant charge permeameter, on a two experimental plots of sampling with regular mesh of 3mx3m, totalizing 60 póints per plot. Spatial dependence was evaluated by geostatistics, also employing he semivariogram parameters to generate the ines by the kriging interpolation Surfer 8.0 software. Results show that despite variation coefficient value being larger for the non tillage system, its data spatial variability was observed to be lower and associated to larger area homogeneity, which demonstrate that values Ko were differently affected systems.