1. Dep. of Soil, Environmental and Atmospheric Sciences; Univ. of Missouri; 302 ABNR Building Columbia MO 65211
2. Center for Agroforestry; Univ. of Missouri; 203 ABNR Building Columbia MO 65211
3. USDA-ARS; Cropping Systems and Water Quality Research Unit; 269 Ag. Eng. Bldg. Columbia MO 65211