ABSTRACT:
Sediment losses were measured from a subsurface drainage-runoff-erosion experimental area near Baton Rouge, Louisiana, for the years 1981–1987. Subsurface drainage reduced soil loss 42%. An annual universal soil loss equation soil loss ratio of 0.11 for conventional tillage silage corn and an annual P value of 0.60 for subsurface drainage were calculated from the soil erosion data for this experiment. The experiment also showed that subsurface drainage is more effective in reducing soil erosion during the winter by controlling water tables caused by the cool weather and large amounts of precipitation during this season in Louisiana.
Footnotes
R. L. Bengtson is a professor and G. Sabbagh is a research associate in the Department of Agricultural Engineering, Louisiana State University Agricultural Center, Baton Rouge, 70803. This study was done in cooperation with the Southern Regional Research Project, S-174, Effects, Mechanisms, and Control of Erosion and Sediment from Agriculural and Forest Land, and approved for publication by the director of the Louisiana Agricultural Experiment Station as manuscript number 88-07-2355.
- Copyright 1990 by the Soil and Water Conservation Society
This article requires a subscription to view the full text. If you have a subscription you may use the login form below to view the article. Access to this article can also be purchased.