What is it about?
We compared the effect of tillage on the susceptibility of soil to be eroded by wind and define soil critical values based on relationships between soil aggregation parameters with selected soil properties
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Why is it important?
Both, Erodible Fraction (EF) and Dry Aggregate Stability (DAS), showed interaction between management and soil type, especially with texture. EF and DAS were sensible to management only in medium texture soils exceeding tolerable levels in some cultivated soils. In medium textured soils (sand/clay between 5 and 10), clay, Al amorphous oxides and Organic Carbon (OC) contributed to form a stable and wind erosion resistant structure. We concluded that the control of wind erosion requires different technologies according to soil texture.
Perspectives
We developed empiric models to define the rate of soil resistance against wind erosion. Such relationships define critical DAS and EF values, below which the process becomes an irreversible soil degradation process.
Dr Juan Cruz Colazo
INTA
Read the Original
This page is a summary of: Soil dry aggregate stability and wind erodible fraction in a semiarid environment of Argentina, Geoderma, October 2010, Elsevier,
DOI: 10.1016/j.geoderma.2010.07.016.
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