Phosphorus placement for forages key to success
By Dr. Adrian M. Johnston, Potash & Phosphate Institute
Farm and Ranch Guide
Forage crops have a big demand for phosphorus. This ranges from almost 10 pounds of P2O5 per ton of grass to 15 pounds per ton of alfalfa. Forages need phosphorus for photosynthesis, energy, cell division, carbohydrate production, protein synthesis, root development and early growth, winter hardiness, and nitrogen fixation in the case of legumes.