Runoff and erosion from interrill areas as affected by the application of manure

This study was conducted to measure runoff and erosion from interrill areas as affected by the long-term application of manure and fertilizer to a Tri pp sandy loam soil located near Mitchell, Nebraska. Soil which had been rem oved from the top 0.1 m of the soil profile was placed in a 1 m(2) soil pan . Rainfall was then applied to the soil pan during initial and wet simulati on events. Total runoff was similar on the manure and no-manure treatments. The long-term application of manure (55 years) at a rate of 27 Mg ha(-1) ( wet basis) per year did not significantly influence interrill erosion on th is sandy loam soil. Interrill erosion was also unaffected by the addition o f manure immediately before the rainfall simulation tests to soils on which manure had been applied in previous years. No significant differences in r unoff and erosion were found among plots receiving varying amounts of ferti lizer. Selected soil properties and erodibility factors were generally unaf fected by the varying manure and fertilizer treatments.