Subsurface Drainage Effectiveness on Alluvial Soil
ABSTRACT A sub surface drainage-runoff-erosion experiment on clay loam soil near Baton Rouge, Louisiana was conducted in 1980 and 1981. The experiment consisted of four plots, of which two were subsurface drained. Corn silage was grown each year. Average yields from the surface and subsurface drained plots were 82% higher than those from the surface only drained plots. From August 1, 1980, to July 31, 1981, surface runoff and soil loss were decreased 16.9% and 17.8%, respectively, by subsurface drainage.