1. USDA-ARS; National Soil Erosion Research Lab.; 275 South Russell St. West Lafayette IN 47907
2. Dep. of Agronomy; Purdue Univ.; 915 West State St. West Lafayette IN 47907-2054
3. USDA-ARS; Northwest Irrigation and Soil Research Lab.; 3793 North 3900 East Kimberly Kimberly ID 83341
4. Dep. of Animal Science; Purdue Univ.; 915 West State St. West Lafayette IN 47907-2054