Abstract
ABSTRACT THE influence of rainfall and over-land flow on interrill erosion and associated nutrient losses was studied for flatland conditions. Interrill ero-sion rates were substantially large. However, amounts of eroded soil reaching actual stream systems may be greatly reduced, depending on the severity of storms. Interrill erosion rates can be decreased substantially by improved tilth. In soils with excellent tilth, the silt fraction in the eroded soil was higher than in the original soil and the clay and sand fractions were lower. Although N and P concentrAtions in the soils with excellent tilth were quite high, losses of these nutrients in sediment runoff were low because of increased infiltration.
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