2011 Annual Report 1a.Objectives (from AD-416) 1) Develop best management practices (BMPs) for sustainable large-scale establishment and production of feedstocks. 2) Enhance diversity, productivity, and resiliency through development of mixed species bioenergy production systems. 1b.Approach (from AD-416) Field-scale research plots will be established at Woodward, OK, to evaluate best warm-season grass establishment method and nitrogen requirements. Monocultures as well as mixed-cultures of grasses will be studied with commercial and legume nitrogen management methods. 3.Progress Report Field-scale plots of switchgrass and smaller-scale plots of mixed plantings of warm-season grasses were harvested during the spring and summer of 2011. Periodic telephone and face-to-face conversations were conducted to monitor research progress. The cooperative agreement facilitated accomplishment of the planned goals.