A rainfall simulator was used on repacked Waukegan silt loam and Hubbard loamy sand soil columns to determine the combined effect of rainfall and livestock waste application on infiltration and runoff. Dairy and swine waste slurries were either surface-applied or incorporated. Livestock waste application noticeably reduced the amount of runoff during a series of artificial rainfall events for all cases with the exception of swine waste incorporated into the silt loam soil. Loamy sand exhibited short-term plugging when both wastes were surface-applied with no incorporation. Surface-application of dairy waste on the silt loam soil apparently prevented formation of a surface seal and improved the infiltration capacity of the soil. Less surface-sealing in waste-applied columns may be attributed to increased organic matter on the surface of the soil that aided aggregate stability. Also, the waste particles protected the surface from the energy of the impacting raindrops.
|Original language||English (US)|
|Number of pages||8|
|Journal||Transactions of the American Society of Agricultural Engineers|
|State||Published - Mar 1 1992|