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7414. Walker, D.J.. 1990 Jan.. Soil Loss Damage Model. STEEP Annual Review, Moscow, ID.
A PC computer model for estimating soil loss damage over time was demonstrated. The model indicates at what point in time it becomes "profitable" to switch to a conservation tillage or management system. A penalty for lost productivity due to soil erosion is calculated and carried forward a specified number of years. Walker indicated that the yield penalty for peas under conservation tillage is 14%. A sample printout shows all the input data and the topsoil depth, current profit advantage, erosion cost, and net value for each year of the projection.