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Keep setback requirements in mind when applying manure this fall

Producers are required to call in prior to doing fall manure applications.

WORTHINGTON — As we get through fall and almost everyone is done combining beans and getting ready to do their fall manure application, I just want to remind everyone of the setbacks that need to be followed.

For example:

Lakes and protected wetlands

• 0 to 25 feet: No manure application is permitted within 25 feet of the ordinary high water level.

• 25 to 300 feet: Inject or incorporate within 24 hours and before rainfall. Manage phosphorus to

prevent long-term build-up of soil P. Do not apply manure to frozen or snow-covered soils in this zone, even if a buffer exists. Do not apply manure with irrigation equipment such as a center pivot or traveling gun.

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• An interim permit is needed if applying manure from feedlots with more than 300 animal units along lakes and protected wetlands where average soil phosphorus levels exceed 75 ppm Bray P1 (or 60 ppm Olsen) or where slopes exceed 6%. Exceptions to state requirements.

• Immediate incorporation and phosphorus management are recommended, but not required, if a 50-foot-wide permanent vegetative buffer (non-manured) is planted along the wetland or a 100-foot-wide vegetative buffer is planted along the lake.

• Manure applications are allowed on seasonally saturated soils that are seeded to annual farm crops or crop rotations of perennial grasses or legumes.

Open tile intakes

• Inject or incorporate manure within 24 hours.

• An interim permit is needed if applying manure from feedlots with more than 300 animal units within 300 feet of open tile intakes where average soil phosphorus levels exceed 75 ppm Bray P1 (or 60 ppm Olsen) or where slopes exceed six percent.

Drainage ditches

• 0 to 25 feet: No manure application is permitted.

• 25 to 300 feet: Inject or incorporate within 24 hours and before rainfall. Manage phosphorus to

prevent long-term buildup of soil P (see page 8: High phosphorus soils). Do not apply manure to frozen or snow-covered soils in this zone, even if a buffer exists. Do not apply manure through irrigation equipment such as a center pivot or traveling gun.

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• An interim permit is needed if applying manure from feedlots with more than 300 animal units along drainage ditches where average soil phosphorus levels exceed 75 ppm Bray P1 (or 60 ppm Olsen) or where slopes exceed 6%. Exceptions to state requirements

• These practices are not required if an earthen berm along the drainage ditch prevents runoff into the drainage ditch. If drainage water enters side inlets through the berm, the practices are required.

• Immediate incorporation and phosphorus management are recommended, but not required, if a permanent vegetative buffer (at least 50 feet wide and non-manured) is planted along the ditch.

Also, one other reminder is that producers are required to call in prior to applying manure and provide the following information; name, phone number, facility location, where you are applying manure and a start date and end date. You can reach me at (507) 295-5322.

I hope everyone continues to have a safe and plentiful 2021 harvest.

Related Topics: AGRICULTURE
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