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Producers are looking for ways to improve the quality and productivity of their soils. While this is important, keeping the existing soil quality and productivity from degrading due to soil erosion is just as important. This is especially true given the frequent and intense rain events we’ve experienced in recent years.
Well designed and maintained grassed waterways can be an important tool for maintaining soil quality and productivity.
There are two main complaints I hear about grassed waterways:
Both of these challenges can be overcome.
Michigan State University Extension advises that the best time to establish waterways is following wheat harvest. The wheat stubble stabilizes the surrounding soil and the grass will have good conditions for germination and adequate time to become established before the fall rains. There are two reasons why water runs around waterways rather than through them. First, sediment builds up in the waterway to the point that the waterway becomes higher than the surrounding soil. Proper design will eliminate this problem. Tillage and planting operations performed parallel to the waterways rather than perpendicular to them can also cause water to flow around waterways. All tillage and planting operations should be directed into grassed waterways and never around them.
General recommendations for establishing grassed waterways include:
The USDA Natural Resource Conservation Service (NRCS) is the best source of information regarding soil conservation practices including grassed waterways. In some situations, cost share funds and site-specific assistance will be provided to producers. However, due to existing workloads, there may be a waiting period for cost-shared waterways to be designed and installed. The NRCS has online resources available at www.mi.nrcs.usda.gov for producers who want to install waterways on their own. The following NRCS resources are recommended:
These materials cover waterway design, grass species selection and waterway maintenance. Producers should review these materials and contact their local NRCS office for a brief consultation before installing a grassed waterway.
Source: Mike Staton, Michigan State University Extension, and Bruce Van Den Bosch, NRCS district conservationist
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