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Thesis (M.S.)—University of Nebraska—Lincoln, 1968. Department of Agricultural Engineering.


Copyright 1968, the author. Used by permission.


The objectives of this study were: 1) To determine the effectiveness of different tillage systems for row crops in controlling soil and water losses from steep slopes on deep loessal soils, 2) To evaluate the quality of the runoff water from these systems with respect to sediment and nutrient content.

In the study rates of runoff and soil loss, sediment composition, and runoff water quality were measured using simulated rainfall.The tillage treatments studied were: till-planted, disked and till-planted, and plowed and disked on contour in preparation for surface planting.Three simulated rainstorms were used: Storm 1 had an intensity of 2.5 inches per hour and a duration of 1 hour; Storm 2 had an intensity of 2.5 inches per hour and a duration of 1 hour, applied 24 hours after storm 1; Storm 3 had an intensity of 5.0 inches per hour and a duration of 0.4 hours, applied immediately after storm 2.

Advisor: Howard D. Wittmuss