Publication Date
1985
Location
Kyoto Japan
Description
Soil physical limitations and climatic conditions in some countries make landspreading of manures a potential environmental hazard due to the danger of surface runoff to waterways. Pig slurry at two application rates was spread on sloped grassland plots at three sites with different soil drainage properties. All surface runoff water was collected and analysed after each significant rainfall. At Sites 1 and 2 where the first runoff event occurred within 48 hours of spreading, the runoff water contained very high concentrations of nitrogen (N), phosphorus (P), potassium (K) and BOD (Biochemical Oxygen Demand), which were related to the rate of application. In subsequent runoff events the BOD concentration dropped sharply, N and K more slowly and the P concentration remained relatively high. On the most impermeable soil (Site 3) rainfall causing the first runoff did not occur for 96 hours after spreading. The concentrations of N, P, and K were moderately high but the BOD concentration was relatively low indicating rapid dissipation of organic carbon.
Citation
Sherwood, M, "Loss of Nutrients in Surface Runoff from Grassland Treated with Pig Slurry" (1985). IGC Proceedings (1985-2023). 5.
(URL: https://uknowledge.uky.edu/igc/1985/ses13/5)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Loss of Nutrients in Surface Runoff from Grassland Treated with Pig Slurry
Kyoto Japan
Soil physical limitations and climatic conditions in some countries make landspreading of manures a potential environmental hazard due to the danger of surface runoff to waterways. Pig slurry at two application rates was spread on sloped grassland plots at three sites with different soil drainage properties. All surface runoff water was collected and analysed after each significant rainfall. At Sites 1 and 2 where the first runoff event occurred within 48 hours of spreading, the runoff water contained very high concentrations of nitrogen (N), phosphorus (P), potassium (K) and BOD (Biochemical Oxygen Demand), which were related to the rate of application. In subsequent runoff events the BOD concentration dropped sharply, N and K more slowly and the P concentration remained relatively high. On the most impermeable soil (Site 3) rainfall causing the first runoff did not occur for 96 hours after spreading. The concentrations of N, P, and K were moderately high but the BOD concentration was relatively low indicating rapid dissipation of organic carbon.
