Use of Industry by-Product Gypsum to Reduce Soluble P In Soil.

Phosphorus transport from land-applied manure could potentially threaten water quality. Flue gas desulfurization (FGD) gypsum use as soil amendment could potetentially minimize P loss. Thus, field studies were conducted to evaluate if FGD gypsum could reduce surface water runoff as well as the extractability of P from soil. The studies were conducted in bermudagrass pastures on fine sandy loam soils of the Southeastern USA. Results will be discussed on the impact that FGD gypsum application has on P retention in soil and the losses with surface water runoff.