2 4 6 8 10 12 14 16 2 4 6 B K) 12 14 16 



% ORGANIC MATTER 9b ORGANIC MATTER 



Figure 4. — Relative erodibility as influenced by variations in sand, clay, and organic matter content 

 of the surface inch of soil. Relative erodibility is the ratio of calculated erosion corrected for 

 sand, clay, and organic matter to calculated erosion at average sand, clay, and organic matter. 



8 



