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Phosphorus Leaching from Biosolids-Amended Sandy Soils

^a Agric. and Biol. Eng. Dep., Pennsylvania State Univ., University Park, PA 16802
^b Soil and Water Science Dep., Univ. of Florida, Gainesville, FL 32611

View larger version (17K): [in a new window]   Fig. 1. Cumulative P leached (percent of total applied) from Immokalee soil amended with various P sources applied at 224 kg P ha-1.

View larger version (11K): [in a new window]   Fig. 2. Phosphorus leached (percent of total applied) from Immokalee soil amended with biosolids and chicken manure as a function of KCl-P of the materials (P rate = 224 kg ha-1).

View larger version (13K): [in a new window]   Fig. 3. Phosphorus leached (percent of total applied) from Immokalee soil (P rate = 224 kg P ha-1) as a function of the biosolids phosphorus saturation index (PSI) (trendline and square data points). No P source exhibited significant leaching for the Candler soil, and only Largo materials are shown ("x" data points). The Myakka soil data is from a previous study.