The samples of all regrowth ages were ground through a 1-mm screen in a Wiley mill. The dry matter (DM) of all regrowth samples was analyzed for grass DM yield determination. The crude protein (CP) concentration and neutral- (NDF) and acid- (ADF) detergent fiber of 6 weeks of regrowth samples were analyzed as described by the AOAC., 1980 and Van Soest et al., 1991, respectively. CP concentration was calculated as the percentage of N content in the sample multiplied by a factor of 6.25. Sulfur concentration in plant and soil were analyzed by Turbidimetric method(Van Lagen,1996)