Northeast Region Certified Crop Adviser (NRCCA) Study Resources

In This Section

• PO 39 Erosion
• PO 40 Consequences of erosion & sedimentation
• PO 41.1-2 Inter-rill & rill erosion
• PO 41.3-4 Gully & streambank erosion
• PO 42 Erodibility
• PO 43 Climatic effects on erosion
• PO 44 Slope effects on erosion
• PO 45 RUSLE
• PO 46 Erosion reduction with agronomy
• PO 47.1-2 Structural conservation 1
• PO 47.3-4 Structural conservation 2
• PO 47.5-6 Structural conservation 3
• PO 48 Tillage
• PO 49.0 Tillage systems
• PO 49.1-2 Plow-till / no-till
• PO 49.3-5 Mulch-till / ridge-till / zone tillage
• PO 51.1-2 Adaptability of tillage systems 1
• PO 51.3-4 Adaptability of tillage systems 2
• PO 52 Tillage practices
• PO 53 Tillage systems
• PO 54 Soil Tilth
• PO 55. Tillage conditions
• Summary

Competency Area 5: Soil conservation AEM

PO 42. Understand how soil types differ in soil erodibility.

Soil texture, organic matter, and soil structure all affect erodibility. Silt particles are most easily removed in erosion, because sand particles are big, while clay particles are typically better aggregated than silt particles in macro-aggregates. Greater organic matter causes soils to become less erodible. Improved soil aggregate stability causes soils to be less erodible.