IMMAG - Iowa Manure Management Action Group

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(515) 294-9590 or e-mail

August 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.


CURRENT NEWS: The Current News page on the IMMAG site is updated weekly. Please check this site often for the latest news regarding animal feeding operations and manure management issues.

Fall is approaching quickly and the time to make preparations for manure application is now. Last year we put out a Top Ten List for fall application. This year we have updated the list and highly encourage everyone to read through it prior to manure application. "A Top Ten List: Preparing for Fall Manure Application". Some of the things listed seem really simple, but are often overlooked during this busy season. Some things are not so simple. ISU Extension field and campus staff continue to receive many questions and comments about foaming manure pits.  I wish we had the answer, but at this point in time we still have no answers as to what is causing the foaming or how best to control or manage the foam. If you have information regarding foaming pits you would like to share please contact me.  In the meantime, I urge caution when pumping from manure pits.  Be aware of safety concerns regarding manure gases, pit fires and explosions. Not all pit fires and explosions have happened in barns with foaming pits. See resources listed in this newsletter for additional information.

The EPA continues with enforcement actions against feedlots in northwest Iowa.  You can read the press release about recent EPA actions by clicking here.Producers are highly encouraged to study the resources below, determine how the issues may affect their farms, and take appropriate steps to manage manure and reduce runoff impacts on water quality. Here is a list of resources highlighting the issues:

Ten Tips to Prepare for EPA Concentrated Animal Feeding Operations Inspections
Update on EPA and DNR Activities in Regards to Large CAFOs, Medium-Sized CAFOs and other Issues regarding NPDES Permits
Implementation Guidance on CAFO Regulations- CAFOs that Discharge or are Proposing to Discharge
EPA Producers' Compliance Guide for CAFOs
Fact Sheet NPDES Permits - Determining if a Combination Open Feedlot and Animal Confinement Must Apply for an NPDES Permit
Fact Sheet - Dairies Act Now


While the world of manure mangagement may seem grim,  I tried to inject a little humor into it this summer when I asked my colleagues for creative names for our new manure video site on the IMMAG web page. Needless to say, my colleagues came up with some very interesting titles including "Fecal Flicks" and "Poopapalooza" and some which can not be shared publicly. The winning title was "PooTube" with very similar graphics to "YouTube". In the interest of not being sued, I wimped out and decided just to call the new link "manure videos". You can find this link on the left navigation bar of the IMMAG web page. At this point in time we have linked four video clips with plans to include more in the future. The titles you will find linked at this time are:

Wet Weather Management of Manure Storage
Hydrogen Sulfide Management in Deep-Pit Swine Housing

Hydrogen Sulfide Safety in Deep-Pit Housing

Update on Deep-Pit Fires and Foam Part 1: Swine Deep-Pit Barn Fires
Understanding the Causes  and

Part 2: Foam Formation

Pop the popcorn and take a view minutes to watch the videos. Also check out the link to the archived webcasts on the Livestock and Poultry Environmental Learning Center page.


August 20. The Livestock and Poultry Environmental Learning Center will be hosting the webcast "NAQSAT, a Tool for Determining Opportunities to Reduce Air Emissions from Beef and Dairy Farms". This webcast will take place at 1:30 p.m. central. To view this webcast click here for more information. If you are not able to watch the webcast on August 20, it will be archived to watch at a later date.

The National Air Quality Site Assessment Tool (NAQSAT) was developed for poultry and livestock producers to assist in determining the areas on their operations where opportunities exist to make changes that will result in reduced air emissions. The tool addresses eight concerns that relate to air emissions: animals and housing, feed and water, collection and transfer of manure, manure storage, land application, mortalities, on-farm records and public perception. NAQSAT can be used for swine, dairy, beef, broilers chickens, laying hens and turkeys operations. It is an on-line tool, developed for voluntary and educational use, available to the public at: This is the first of a two part series of webcasts. During the first webcast Natalie Rector will provide a tool overview; Crystal Powers will discuss case studies on beef farms; and Dr. Tamilee Nennich talk about the application of the tool on dairy farms. The second part in the series will discuss the use of the tool on poultry and swine farms and will be presented on October 15.

August 24. Coalition to Support Iowa’s Farmers "Doing Things Right: Farming for the Future" Conference will be held from 9 a.m. to 4 p.m. in Fort Dodge, IA. For more information please see:

August 25. ISU Extension in partnership with Iowa DNR, will be hosting a statewide commercial manure applicator training workshop on August 25 from 9 a.m. to noon. A list of County Extension offices hosting this training can be found here. Please contact the location where you plan to attend so adequate certification materials and handout materials can be made available. We encourage all commercial manure applicator businesses to take advantage of this workshop to get new or existing employees trained prior to the busy fall manure application season. If you can’t attend this workshop, please contact your County Extension Office to schedule an appointment to watch the video/dvd training or contact your local DNR field office to schedule an appointment to take the certification exam. More information about the manure applicator certification program can be found here.

September 7. The Iowa Pork Producers Association is hosting "Environmental Regulations and Program Assistance Update" conference. This event will be held at the Scheman Building on campus at Iowa State University from 1-4:30 p.m.  If you can’t attend in person, you can participate via a webinar. For more information please click here.

September 15. Iowa State University Extension and Eldon C. Stutsman, Inc. are sponsoring a manure injection field demonstration. The field day will begin at 10:30 a.m. and will be held at the Southeast Research and Demonstration Farm near Crawfordsville. The field day will highlight several different manure injectors operating in freshly harvested soybean residue, a look at residue levels before and after injection, a drag-hose system and current manure nitrogen issues. A free lunch will be served courtesy of Eldon C. Stutsman, Inc. Directions to the Research Farm: Go 1 ¾ miles south of Crawfordsville on Hwy 218, then 2 miles east on G-62, then ¾ mile north.  Watch for signs.



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.