Effect of phosphate fertilization on nitrogen use efficiency of forage pastures. 1. Tall fescue pastures. [abstract]
Nutrients deficiencies - mainly phosphorus (P) and nitrogen (N) - often depress forage productivity (FP) in pasture-based systems in the Pampas region (Argentina). Fertilizations are often used to attenuate these deficiencies, but it is necessary to increase the use efficiency of the applied nutrients.