Western Research and Demonstration Farm
Pastures in Iowa consist mostly of cool-season grasses. A combination of warm-season grass and cool-season grass would improve overall efficiency of forage growth available for livestock production. The addition of legumes can improve the overall efficiency of pastures because the legumes in the warm-season grass mixtures can help to improve forage quality and reduce the nitrogen fertilizer needed.
Iowa State University
Braden, I. S.; Moore, Kenneth J.; Hoffman, M. Peter; and Gertsma, James, "Warm-Season Grass Pasture Improvements with Legume Mixtures" (2003). Iowa State Research Farm Progress Reports. 1556.