Publication DetailsTitle : Research Note: Revision of Parameters of the Grain Sorghum Ethanol Pathway in GREET
Publication Date : November 21, 2014
Authors : H. Cai, M. Wang, J. Dunn
Abstract : We recently reviewed publications and data concerning sorghum farming to revise several grain sorghum ethanol pathway parameters in the Greenhouse gases, Regulated Emissions, and Energy use in Transportation (GREETTM) model. In this research note, we present our revision of sorghum grain yields, the grain sorghum harvested-to-planted acreage ratio, the grain sorghum stover nitrogen content, and nitrogen fertilizer application rates. The latter two parameters are very important because previous GREET life-cycle analysis concluded that nitrous oxide emissions from nitrogen fertilizer application and from decay of residual grain sorghum stover in the field are major contributors to the life-cycle greenhouse gas (GHG) emissions of grain sorghum ethanol (Cai et al., 2013).