Design (short description):
12 treatments replicated in 3 blocks. Factorial arrangement of nutrient source (inorganic, poultry litter+inorganic, and poultry litter only) and forage utilization (unharvested, low grazing pressure, high grazing pressure, and hayed). Grazed treatments were 0.7 ha each, while unharvested and hayed exclosures were 100 m2 each.