Boll, Jan - Soil and Water Conservation Society

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Load reduction efficiency: by area 100% Cumulative Percent of 30 Year Average Load 90% 80% 70% 60% 50% 40% 30% 20% 10% 0% Grass NT WW-B-P NT WW-P NT WW-B MT WW-B MT WW-B-P MT WW-P CT WW-B CT WW-B-P CT WW-P 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Cumulative Percent Area
Optimization Model • To evaluate various options to achieve sediment reduction goals while optimizing the farm income • The objective function is to maximize the net returns subjected to constraints of l<strong>and</strong> availability <strong>and</strong> soil loss reduction: Max Π = ( PC * Y − C, F CC, F ) X C, F C, F Subject to the constraints: Σ X C , F = C Σ eC , F X C , F L ≤ F E
Page 1 and 2: Evaluation of Conservation Practice
Page 3 and 4: Research & Objectives Our research
Page 5 and 6: Saturated areas
Page 7: Elevation map Slope map
Page 10 and 11: 5 crops: • winter wheat • sprin
Page 12 and 13: Rock Chute Filter Strip Diversion R
Page 14 and 15: Historic Data Points 2006 points
Page 16 and 17: Observed versus Simulated Streamflo
Page 18 and 19: Grass Direct Seed Mulch Till Conven
Page 20 and 21: Gully Plugs Severely eroded spots -
Page 22 and 23: 30 Year WEPP Simulated Sediment Loa
Page 24 and 25: Sediment Load: Average and Median 1
Page 28 and 29: Data • Operators provided crop/ti
Page 30 and 31: Optimization results Net returns ($
Page 32 and 33: 0% Reduction 10% Reduction 30% Redu

Boll, Jan - Soil and Water Conservation Society

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