2003/05/01 by Muhammad Tariq Siddique, J. Stephen Robinson, J.S. Robinson · 180 citations
Agricultural and Biological Sciences · Chemistry · Environmental Science · #Adsorption #Agronomy #Biology #Chemistry #Environmental chemistry #Environmental engineering #Environmental science #Litter #Manure #Manure management #Nutrient #Organic matter #Phosphorus #Phosphorus and nutrient management #Poultry litter #Sewage #Sewage sludge #Slurry #Soil Carbon and Nitrogen Dynamics #Soil and Water Nutrient Dynamics #Soil science #Soil water #Sorption
paper · doi:10.2134/jeq2003.1114
published in Journal of Environmental Quality 32(3), 1114-1121 (Wiley)
openalex publication_date 2003/05/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/27
Soils that receive large applications of animal wastes and sewage sludge are vulnerable to releasing environmentally significant concentrations of dissolved P available to subsurface flow owing to the gradual saturation of the soil's P sorption capacity. This study evaluated P sorption (calculated from Langmuir isotherms) and availability of P (as CaCl2-P and resin P) in soils incubated for 20 d with poultry litter, poultry manure, cattle slurry, municipal sewage sludge, or KH2PO4, added on a P-equivalent basis (100 mg P kg(-1)). All the P sources had a marked negative effect on P sorption and a positive effect on P availability in all soils. In the cattle slurry- and KH2PO4-treated soils, the decreases in P sorption maximum (19-66%) and binding energy (25-89%) were consistently larger than the corresponding decreases (7-41% and 11-30%) in poultry litter-, poultry manure-, and sewage sludge-treated soils. The effects of cattle slurry and KH2PO4 on P availability were, in most cases, larger than those of the other P sources. In the poultry litter, poultry manure, and sewage sludge treatments, the increase in soil solution P was inversely related (R2 = 0.75) to the input of Ca from these relatively high Ca (13.5-42 g kg(-1)) sources. Correlation analyses implied that the magnitude of the changes in P sorption and availability was not related to the water-extractable P content of the P sources. Future research on the sustainable application of organic wastes to agricultural soils needs to consider the non-P- as well as P-containing components of the waste.