Fig. 2. Effect of biosolids and poultry litter (PL) inorganic P distribution on runoff dissolved reactive phosphorus (DRP) losses from the amended (a) Elsinboro silty loam and (b) Woodstown sandy loam. Al-P, Ca-P, and Fe-P, aluminum-, calcium-, and iron-related phosphorus, respectively; LS-P, loosely soluble phosphorus; RS-P, reductant-soluble phosphorus.