In our two -year field experiment, white clover pure stand resulted in higher biomass yield compared to its respective mixtures with grasses and as well as with the mixture of red clover with grasses. Although other legumes such as alfalfa and red clover pure stands resulted in lower biomass yield compared to their respective mixtures. However, overall alfalfa and red clover mixtures were more productive than that of mixture of white clover. What are the possible reasons for white clover to produce more biomass yield in pure stand but when it mixed with grasses its mixture produce lower biomass yield compared to the mixtures of alfalfa with grasses or red clover with grasses.