1. Soil Conservation Agriscience II

2. Performance Objectives 1) Explain how the major types of soil erosion affect the environment and agricultural production. 2) Describe factors that influence soil erosion. 3) Evaluate the effectiveness of erosion prevention procedures

3. Soil Erosion Movement of soil particles from one place to another under the influence of water or wind

4. Types of Soil Erosion Water Erosion Wind Erosion

5. Water Erosion Raindrops Surface flow Gully flow

6. Wind Erosion Organic matter is blown away Sand and coarse materials left behind

7. Factors Influencing Erosion Plowing unsuitable land Too little rainfall Braking up land susceptible to erosion No crop residues Exposing soil on slopes Removing vegetation from forests Overgrazing

8. Results of Soil Erosion Loss of topsoil Reduction of yields Greater need for fertilizers Production of lower nutrient crops Formation of gullies Covering of rich bottomlands by poorer highlands

9. Results of Soil Erosion continued Destruction of roadbanks Erosion of bottomlands Silt accumulation in ditches and waterways Increased flood hazard Waste of water Greater costs of production

10. Water Erosion Prevention Procedures Cover Crops Crop Rotation Strip Cropping Grassed Waterways Conservation Tillage Contour Farming Terraces

11. Windbreaks and Shelterbreaks Conservation Tillage Contour Farming Wind Erosion Prevention Procedures