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 41. Understand the different types of soil erosion

There are four types of water erosion:

1. Inter-rill erosion: the movement of soil by rainsplash and its transport by thin surface flow whose erosive capacity is increased by turbulence generated by raindrop impact. The term sheet erosion is frequently used instead of inter-rill erosion, but it omits the concept of rain-splash and conveys the erroneous concept that runoff commonly occurs as a uniform sheet.
2. Rill erosion: erosion by concentrated flow in small rivulets.
3. Gully erosion
4. Streambank  erosion

Rill erosion

Photo courtesy of NRCS

http://photogallery.nrcs.usda.gov