Figure 18-1 5 Erosion Figure 18-2 6 How Water Erosion Occurs
Texture and structure
Figure 18-6 7 How Water Erosion Occurs
Types of water erosion
8 Predicting Soil Loss The Universal Soil Loss Equation
Tolerable soil loss
9 The Universal Soil Loss Equation Figure 18-12 10 The Universal Soil Loss Equation Figure 18-13 11 The Universal Soil Loss Equation Figure 18-14 12 The Universal Soil Loss Equation Figure 18-15 Figure 18-16 13 The Universal Soil Loss Equation
Three fifths of soil lost to erosion washes away in running water
Two thirds of soil erosion from wind
Ways to control erosion
Grow vigorous crops
Maintain organic matter
Avoiding overtillage and compaction
Contour tillage strip cropping and terraces
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