Showing papers by "Maximiliano Bezada published in 2002"
TL;DR: Paleosols in northern Venezuela, which have formed in residual regoliths of metaargillite rock complexes, have been considered to have developed in tropical, humid climates at low elevation as discussed by the authors.
5 citations
01 Jan 2002
TL;DR: In this article, in situ field examination of twelve agricultural plots was conducted in the Pueblo Llano Valley in the Venezuelan Andes to assess the impact of soil erosion on potato yields.
Abstract: Over a period of five years, in situ field examination of twelve agricultural plots was conducted in the Pueblo Llano Valley in the Venezuelan Andes to assess the impact of soil erosion on potato yields. The objectives of the study were twofold: (1) To quantify the erosion rate by comparing uncultivated sites with natural vegetation with cultivated plots through stratigraphic analysis; (2) to estimate the link between erosion rate, certain soil properties and yield. In this paper various functional forms relating crop yield to depth of the A horizon and several physical and chemical soil properties are estimated using nonlinear and stepwise regression analysis.
1 citations