Northeast Region Certified Crop Adviser (NRCCA) Study Resources

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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 47. Understand the basic approaches to structural soil conservation practices.

1. Filter strips
2. Grassed waterways
3. Diversions
4. Ponds
5. Terraces
6. Drop structures

Diversions

Diversions are cross-slope channels used to intercept surface runoff and divert it to a safe or convenient discharge point. They are usually placed above the area to be protected and are permanently vegetated with grass. They are often used on steeper slopes where a terrace would be too expensive or difficult to build, maintain, or farm. They can also be used to protect barnyards or farmsteads from runoff. 

Diversion terrace

Photo courtesy of NRCS

http://photogallery.nrcs.usda.gov 

Ponds

Ponds can act as sedimentation basins. Surface (open tile) inlets allow movement of surface runoff water into underground tile drains and safely direct discharge into surface waters. WASCOBs (water and sediment control basins) are short earthen dams built across a drainage way that trap sediment and water.

Conservation pond

Photo courtesy of NRCS

http://photogallery.nrcs.usda.gov