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Spatial variability of physical attributes of a cohesive soil under conventional and no-tillage management systems

Abstract

The objective of this work was to evaluate the spatial variability of moisture content, bulk density, and porosity of a cohesive soil under conventional and no-tillage management systems. Two regular grids were installed, one for each management type. The soil was collected at the 0.00-0.20-m depth and the spatial variability of its attributes was analyzed by semivariogram parameters and ordinary kriging geostatistical interpolation. The soil showed greater bulk density and moisture conservation under no-tillage, and greater porosity under conventional tillage.

Index terms:
soil bulk density; ordinary kriging; soil porosity; soil physical quality; soil moisture

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