Biological Systems Engineering
Date of this Version
1986
Citation
Transactions of the ASAE, vol. 29, No. 3, pp. 761-766, 1986.
Abstract
A rainfall simulator was used to compare soil losses from tillage and planting systems used in residue from soybeans. The study was conducted on a silty clay loam soil in the Wymore Series with a 5% slope and on a silt loam soil in the Nora Series with a 10% slope. Tillage and planting treatments, ranging from a moldboard plow system to no-till planting, were evaluated both up and- down hill and on the contour using replicated plots.
For the first rainfall event after tillage and planting, the average soil loss for all systems on the contour was 3.0 t/ha which was a 74% reduction from the average soil loss of 11.5 t/ha for tillage and planting conducted up-and-down hill. Similarly, the average soil erosion rate for systems on the contour was 9.5 t/(ha·h), a 65% reduction from the 26.2 t/(ha·h) average soil erosion rate for up-and-down hill tillage systems. All tillage systems compared showed a significant reduction in soil erosion, soil erosion rate, and sediment concentration for row direction on the contour rather than with the slope.
Comments
Copyright 1986 The American Society of Agricultural Engineers.