Prudent® 40PLUS highly concentrated phosphate fertilizer (40% PO3, expressed as P2O5), is formulated with patented urea phosphate and Pennamin® Driver-P amino acids. The amino acids aid in building tolerance against environmental stresses, help move nutrients into the plant, and, play important roles in almost every plant function. And, since they are free amino acids they are readily plant- available. This saved energy can then be used for other plant functions.