Runoff, Erosion, and Crop Yield Simulation for Land Use Management
ABSTRACT THIS paper describes a system for combining hydrology, infiltration, moisture redistribution, crop growth, and rill-interrill erosion models. Data from a cotton field in the Mississippi Delta were used to test and refine the system. We present examples showing how the system can be used to evaluate alternative land-management schemes. The model showed that row spac-ing, land slope, and tillage operations affect runoff and sediment yields more than do factors such as plant population and fertilizer application rates. It also show-ed the responsiveness of cotton yields to changes in plant density, fertilizer application rates, and row spacing.