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Full-Text Articles in Biological Engineering
Manure Impacts On Interrill Erosion, John E. Gilley, Bahman Eghball, J. M. Blumenthal, David D. Baltensperger
Manure Impacts On Interrill Erosion, John E. Gilley, Bahman Eghball, J. M. Blumenthal, David D. Baltensperger
Department of Biological Systems Engineering: Conference Presentations and White Papers
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 Tripp sandy loam soil located near Mitchell, Nebraska. Soil that had been removed from the top 0.1 m of the soil profile was placed in a 1 m2 soil pan. Rainfall was then applied to the soil pan during initial and wet simulation 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 …
Runoff And Soil Loss As Affected By The Application Of Manure, John E. Gilley, L. Mark Risse
Runoff And Soil Loss As Affected By The Application Of Manure, John E. Gilley, L. Mark Risse
Biological Systems Engineering: Papers and Publications
Manure has been used effectively to improve crop production and soil properties because it contains nutrients and organic matter. While it is generally accepted that the improved soil properties associated with manure application lead to changes in runoff and soil erosion, few studies have quantified these impacts. Water quality models used to assess watershed management and estimate total maximum daily load must accurately predict loading rates from fields where manure has been applied. This study was conducted to assemble and summarize information quantifying the effects of manure application on runoff and soil loss resulting from natural precipitation events, and to …
Narrow Grass Hedge Effects On Runoff And Soil Loss, John E. Gilley, B. Eghball, L. A. Kramer, T. B. Moorman
Narrow Grass Hedge Effects On Runoff And Soil Loss, John E. Gilley, B. Eghball, L. A. Kramer, T. B. Moorman
Biological Systems Engineering: Papers and Publications
This rainfall simulation study provided information on the effects of 0.72 m (2.4 ft) wide switchgrass hedges located at the bottom of plots on runoff an soil loss under both no-till and tilled conditions. The study area, which had slopes ranging from 8 to 16%, had produced corn for 33 years and the grass hedges had been established for 6 years. Simulated rainfall [64 mm hr-1)] was applied for two hours to plots [3.7 m (12 ft) wide by 10.7 m (35.1 ft) long] with corn residue and to plots where corn residue was removed. The narrow grass …
Sediment Movement Within A Strip Intercropping System, John E. Gilley, L. A. Kramer, R. M. Cruse, A. Hull
Sediment Movement Within A Strip Intercropping System, John E. Gilley, L. A. Kramer, R. M. Cruse, A. Hull
Biological Systems Engineering: Papers and Publications
This study was conducted to identify sediment movement within a strip intercropping system in southwestern Iowa during the third year of a three-year crop rotation. Soil loss, resulting from the application of simulated rainfall to a Monona silt loam soil, was measured from individual corn (Zea mays L.), soybean (Glycine max (L.) Merr), and winter wheat (Triticum aestivum L.) strips, and from multiple strips which included all three crops. Because of the crop rotation and residue management procedures, used at the study site, a substantial amount of surface cover and vegetative mass was present on each of …