IMMAG - Iowa Manure Management Action Group

Contact us

(515) 294-9590 or e-mail

December IMMAG Update

Welcome to the monthly update for the Iowa Manure Management Action Group (IMMAG) Web site. This update is provided as a service to inform you about changes made to the IMMAG Web Page or items of interest dealing with manure management and air quality from animal feeding operations. If you wish to subscribe to this mailing please click here. You may also view this update with direct links on the CURRENT NEWS site on IMMAG.



Follow iowamanure on Twitter The Current News page on the IMMAG site is updated weekly. Follow the Iowa Manure Management Action Group on Twitter at @iowamanure.

The latest in proposed rule changes finds DNR seeking to upgrade parts of Chapters 60, 63, 64, and 65. This rule package will bring Iowa rules into compliance with federal rules as related to NPDES permits for both confinement feeding operations and open feedlots.  A copy of this rule package can be found in the December 15 edition of the Iowa Administrative Bulletin at this link. Once there, you will find the rule package on page 881 of the Bulletin or for printing purpose print pages 17-33. Written comments must be submitted by January 11, 2011 to Gene Tinker, Iowa Department of Natural Resources, Wallace State Office Building, 502 E. 9th St., Des Moines, IA 50319-0034, fax: 515-281-8895 or email to Gene Tinker at:

Public hearings on this rule package are scheduled as follows:
January 4, 2011 at 6 p.m. at Northeast Iowa Community College, Dairy Center, Calmar
January 5, 2011 at 6 p.m. at Lime Creek Nature Center, Mason City
January 6, 2011 at 6 p.m. at Washington County Conservation Board, Education Center at Marr Park, Ainsworth
January 10, 2011 at 6.p.m. at Clay County Administration Building Boardroom, Spencer
January 11, 2011 at 11 a.m. at the Wallace State Office Bldg., Fourth Floor Conference Room, Des Moines.

And this reminder from DNR: Dry Bedded Confinements Some livestock producers are constructing hoop style or monoslope confinement barns for livestock production. Senate File 432 was adopted by the legislature during the 2009 session and signed by the Governor on May 26, 2009 to describe the requirements for these "Dry Bedded Confinement Feeding Operations". Some of these requirements are lessened when compared to other confinements, such the 200 foot separation distance to a water source that is not a major water source (500 feet for other confinements) and the ability of the person renting crop ground to sign land application agreements for manure application with the owner of the confinement for their Manure Management Plan (other confinements must have the landowner of the manure application fields sign the agreement). Senate File 432 also defines a dry bedded confinement feeding operation as a confinement feeding operation in which animals are confined to areas which are totally roofed and in which all manure is stored as dry bedded manure. However some producers are not operating structures in this manner, as they frequently scrape non bedded manure from the feed apron. This manure does not contain bedding and normally has a consistency much more like liquid manure than solid manure. Facilities operated in such a manner would not meet the definition of a dry bedded confinement and would need to meet requirements of a standard confinement operation rather than the requirements of a dry bedded confinement.

Winter Application of Manure: The winter application law for applying liquid manure from confinement feeding operations starts on December 21. See the article "Winter Application of Manure: Regulations and Common Sense" for more information. Regardless of whether this law applies to your operation, application of manure on snow-covered or frozen ground is not a recommended practice.


Confinement site manure applicators are reminded they need to attend 2 hours of training each year if they choose training to meet certification requirements and don’t want to take the remedial certification exam. If you have not attended training yet this year, make arrangements now to do so. Do not wait until the last week of December. Contact your county Extension office to schedule an appointment to view the training video. If you received a letter in the mail from DNR stating that you had not met all of your certification training requirements for your current license, it will only pay to attend training yet in 2010, if you missed earlier 2010 training. If you missed training in 2009, you will be required to take the remedial exam in order to be eligible to renew your license in 2011.

Additional information can be found on the ISU Manure Applicator Certification Web Page at: or on the DNR’s Web page at:

Commercial Manure Applicator Certification Training Workshop, January 6, 2011 from 9 a.m. to noon, please click here for a list of locations.

2011 Confinement Site Manure Applicator Certification Training Workshops are scheduled for January and February 2011. Please click here for a list of dates, times and locations.


The IMMAG Events page is a compilation of manure management related events. Please check the events page often for new listings.

On December 17 the Livestock and Poultry Environmental Learning Center will host the webcast "Controlling Ammonia and Air Emissions in Poultry Facilities. The webcast begin at 1:30 p.m. Please see this link for more information:

Feb 16-17, 2011 ISU Soil Fertility Short Course. Principles of soils, soil fertility, and nutrient management are reviewed in this 2-day course. For more information please see:


Angela Rieck-Hinz
2104 Agronomy Hall
Iowa State University
Ames, IA 50011
(515) 294-9590
Iowa Manure Management Action Group

Manure sampling - Click on photo to enlarge

Manure sampling.


Newest IMMAG update available.