Sorghum is an aridity resistant crop and it is suitable for summer grazing. The plant produces cyanide which can poison livestock under certain conditions, involving climate, fertility, stage of growth, and anything that retards plant growth and development, may increase cyanogenetic glycosides in the plants (Wheeler, 2002; Vogel et al., 1987; Osechas et al., 1996; Ramos et al., 1998). In this trial the development of dhurrin content in growing irrigated and dry crop was evaluated........