Abstract

PENA, Ricardo; RUBIANO, Yolanda; PENA, Andrés  and  CHAVES, Bernardo. Spatial variability of top soil attributes in an eastern range piedmont Inceptisol in Casanare, Colombia  . Agron. colomb. [online]. 2009, vol.27, n.1, pp.111-120. ISSN 0120-9965.

With the aim of optimizing future samplings in similar soils, the present work studied spatial variability of soil attributes in a 58 ha plot in the municipality of Tauramena, department of Casanare, in the Colombian Orinoquia. Located at an alluvial fan terrace of the Eastern Mountain Range, the studied soil is an Oxic Dystrudept with loamy sand to clay loam texture. The optimal sampling distance for each studied variable was calculated by means of a Semivariogram Analysis and a Nested Analysis of Variance. No difference between the calculated optimal distances was found with either method when the variance of the specified attribute was spatial dependent.

Keywords : Eastern plains; variogram; oxisol.

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