Learn to Hunt
Report Your Harvest
Current Fishing Report
Taking Kids Fishing
Iowa's natural resources plates include the state bird and flower, pheasant, eagle, buck and a Brook trout. Support conservation in Iowa by buying a natural resource plate for your vehicle.
Natural Resource Plates
Experience Iowa's natural beauty and all the fun our state parks offer. Make your online reservation for state park cabins, camping sites, shelters and lodges.
Support conservation in Iowa by buying a natural resource plate for your vehicle.
Natural Resource Plates
Iowa DNR Customer Service
Mon - Fri, 8:00am - 4:30pm CST
Submit Online Inquiry
Information / Records Requests
Contact Information by County
Freezing temperatures following a wet fall and delayed harvest make this year’s manure application challenging. For many in northwest and north central Iowa, surface application has been the only viable option during the last few weeks.
Add to that, on Dec. 21 the limitation on applying liquid manure from confinements on snow-covered ground kicks in. Confinement sites are totally roofed facilities with more than 500 animal units, e.g., 1,250 finishers, 500 cattle, etc.
Ken Hessenius, supervisor of the Spencer DNR field office, recaps requirements to keep producers on the right side of Iowa’s manure application rules. All producers must follow some setbacks for surface application.
1. Snow-covered and frozen ground restrictions apply to application of liquid manure from confinements unless the liquid manure is injected or incorporated on the application date. They do not apply to small animal feeding operations (confinements with 500 or less animal units).
2. If you must switch from injection or incorporation to surface application:
3. Check your construction permit to see if your facility claimed points on the Master Matrix for injecting or incorporating manure. If covered by item 26e on the Master Matrix (footnote c), your operation must have a written waiver from a DNR field office before surface applying.
4. Check to see if you have a similar nutrient management plan under a federal NPDES permit or NRCS plan, and make sure it allows for surface application.
“Many producers are in a bind because of the weather this year,” Hessenius said. “One option is to surface apply just enough to get by until the weather breaks in the spring and manure storage can be emptied.”
To prevent surface application runoff during freeze/thaw cycles, Hessenius recommends picking the most appropriate fields:
And, remember to plug those tile intakes.
Find out more from a previous DNR news release or check out the latest Iowa Manure Management Action Group’s (IMMAG) update for 10 things to consider when winter manure application is necessary.