The model has several components:
The model requires input from GRASS GIS layers. These include soil series and weather data, although the model can generate the necessary weather parameters. The model also requires management information that can be input from a text file. Currently, there are many management files that exist for EPIC and an effort is underway to catalogue these files and provide them to users. The model provides output on crop yields, economics of fertilizer use and crop values.
Jones, C.A., C.V. Cole, A.N. Sharpley, and J.R. Williams. 1984. A simplified soil and plantphosphorus model. I. Documentation. Soil Sci. Soc. Am. J. 48(4):800-805.
Williams, J.R., C.A. Jones, and P.T. Dyke. 1984. A modeling approach to determining therelationship between erosion and soil productivity. Trans. ASAE 27:129-144.
Full list of References