The Iowa Manure Management Action Group has issued the following best management practices for applying all sources of manure. Those rules include:
- Do not apply manure in the winter.
- If you have to apply manure in the winter, apply on the flattest slopes as far from water sources as possible.
- Be sure to follow all separation distances. Even if you follow separation distances, a water quality violation may still occur.
- Avoid application on areas that drain to surface tile intakes.
- Do not apply manure in a grassed waterway
- Store or stockpile manure in a manner that does not cause runoff
- Do not apply manure immediately prior to a precipitation event, especially if the ground is frozen. This can cause the manure nutrients and pathogens to quickly move off-site and likely cause a water quality violation.
- Do not apply manure on deep snow cover when warmer temperatures are forecasted. Rapid snow melt can also cause manure nutrients to move off-site quickly.
For more information on manure application procedures and other manure-related issues, visit the Iowa Manure Management Action Group website at
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