1. Crop, Soil and Environmental Sciences, Division of Agriculture; Univ. of Arkansas; Fayetteville AR
2. USDA-ARS, Pasture Systems and Watershed Management Research Unit; University Park PA
3. USDA-ARS, Cropping Systems and Water Quality Research Unit; Columbia MO
4. Plant Sciences; The Pennsylvania State Univ.; University Park PA
5. USDA-ARS, Food Animal Environmental Systems Research Unit; Bowling Green KY
6. Dep. of Agriculture, Food and Resource Sciences; Univ. of Maryland- Eastern Shores; Princess Anne MD
7. Biological Systems Engineering, Virginia Tech; Blacksburg VA
8. Plant Science Division; Univ. of Missouri; Columbia MO
9. Agronomy; Kansas State Univ.; Manhattan KS
10. Crop and Soil Sciences; North Carolina State Univ.; Raleigh NC
11. Crop and Soil Sciences; Univ. of Georgia; Athens GA
12. Ecosystem and Science Management; The Pennsylvania State Univ.; University Park PA