1. Dep. of Plant, Soils, and Climate; Utah State Univ.; Logan UT 84322-4820
2. USDA-ARS, Forage and Range Research Unit; Utah State Univ.; Logan UT 84322-6300
3. Dep. of Animal, Dairy, and Veterinary Science; Utah State Univ.; Logan UT 84322-4815
4. Dep. of Applied Sciences, Technology and Education; Utah State Univ.; Logan UT 84322-4002
5. Dep. of Applied Economics; Utah State Univ.; Logan UT 84322-4810