Studies on the Grassland Development in the Forest XIII. Effect of potassium fertilization on grass production, nutritive value and nitrate nitrogen concentration by growing senson and growth stage under shading condition
To determine the effects of potassium() fertilization level(0, 100, 200 and 300 kg/ha/year) on the growth, dry matter(DM) yield, nutritive value and nitrate nitrogen(-N) concentration of grasses grown under shading condition, this experiment was carried o