Effect of some organic residues on erodibility of soils
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The main purpose of this experimental work is to investigate the effects of some organic residues, such as, manure and vetch residues on the structural stability and erodibility of some surface soils. In this laboratory research, three soil samples collected from different region, two various kinds of organic residues and three application levels were used. At the end of the incubation period, structural stability and erodibility of controls and admixtures were determined by means of structural stability index, dispersion ratio, erosion ratio, permeability ratio, aggregate stability and erodibility factor of USLE. As a result, the organic residues applied into the soils, improved the structural stability and, to some extent, decreased the erodibility of soils studied. There were no significant differences between the application levels of 5% and 10%.