Field data from Florida and Georgia were combined with a simulation model to evaluate the effect of applied ? and split ? application on bahiagrass production. Seasonal dry matter distribution, total yield and ? removal were all analyzed. Early spring growth is enhanced by a single application in April, while split applications spread out the growth. Total yield and ? removal are nearly the same. Equations are given which relate total yield and ? concentration to applied N. This work quantitatively describes the relationship of forage production to ? fertilization.