Response of Sub-Irrigated Meadow Vegetation to Application of Nitrogen and Phosphorous Fertilizer

Abstract

Combinations of nitrogen and phosphorus fertilizer gave greater yield increases than either element applied alone. Yield response and chemical composition of forage appeared to be a result of botanical composition changes in the meadow. Phosphorus fertilizer tagged with P32 revealed that legumes used greater amounts of applied phosphorus than did grasses. Nitrogen fertilizer appeared to increase utilization of applied phosphorus by grasses.