Abstract

ALVAREZ HERRERA, Javier Giovanni; RUIZ BERRIO, Hernán David  and  ACOSTA TOVA, Darwin Fernando. Geostatistical Evaluation of Hydro-Physical Soil Properties at the Tunguavita Farm, Paipa, Colombia. Cienc. Ing. Neogranad. [online]. 2021, vol.31, n.1, pp.127-140.  Epub July 23, 2021. ISSN 0124-8170.  https://doi.org/10.18359/rcin.5396.

Given the influence on the agricultural exploitation of the physical properties of soils, it is necessary to study its geo-statistics to know their distribution, variability, and their effect on the remaining soil properties. 80 points were measured in a transect of a farm belonging to the Universidad Pedagógica de Colombia. True density (Td), apparent density (Ad), total porosity (Tp), organic carbon content (OC), particle size and basic infiltration (Bi) were analyzed using a descriptive, geostatistical, and multivariate analysis. The physical properties with the lowest coefficients of variation (cv) were Td (7.50 %) and Ad (4.33 %). All variables showed a low cv, saved the Bi. OC farm values are very low (1.97 %). Td, OC and TP were adjusted to linear semi-variograms and showed the highest ranges (75 m). Clay correlated negatively with sand and lime; while the TP correlated directly with Td, and inversely with Ad. Porosity and particle size have a large influence on the variance of the physical properties of the farm soils, as per the analysis of the main components. It is possible that intensive cattle farming affect the porosity and Td, which decreases the Bi and increases soil compaction.

Keywords : Alflsol; organic carbon; apparent density; geo-statistics; soil infiltration; organic matter; particle size.

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