| Abstract: | Abstract Soil chemical and physical reactions involving phosphorus (P) must be understood to predict the risk of P being transported from agricultural land to streams and lakes. The kinetics of P sorption by an Ultisols from West Virginia, USA, receiving P from fertilizers were compared to soils amended with turkey litter. Addition of 6.6 and 13.2 Mg turkey litter ha?1 increased Bray 1P levels to about the same level as adding 53 and 115 kg P ha?1, respectively. Phosphorus binding capacity decreased to a greater extent when P was added as fertilizer as compared to turkey litter. For example, P binding maximum was 360 mg P kg?1 dry soil when soil was amended with 6.6 Mg turkey litter ha?1 as compared to 260 mg P kg?1 dry soil when amended with 53 kg P ha?1. This study demonstrates that the decrease in P‐binding capacity with increasing soil P is less when P is added as turkey litter. |
