IMMAG - Iowa Manure Management Action Group

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(515) 294-9590 or e-mail

September 2011 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.

A few reminders for Iowa manure applicators.  

Commercial Manure Applicators: You must be certified in the state of Iowa if you handle, haul or land-apply manure.  To meet certification requirements you must 1) attend 3 hours of annual training, OR 2) take and pass the exam yearly. You may meet your training requirements by contacting your county extension office to schedule an appointment for the training.  You may contact your local DNR field office to schedule an appointment to take the exam.  CMS applicator lettering

Please remember, as a commercial applicator business, you are required to display the following information on any vehicle transporting manure on a public road: certification number of the commercial applicator service or business; name of the business manager; and full business mailing address.  The lettering must be three-inches or larger in size.  See the photo for a good example (Thanks to Greg Elbert, Quality Nutrient Spreading for letting me take this photo.)  More information can be found at:

Confinement Site Manure Applicators:  Anyone with more than 500 animal units in a confinement building must meet manure applicator certification requirements.  This includes all new hoop or monoslope beef production facilities where the animals are confined.  Confinement site applicators are required to 1) take and pass an exam once every three years OR 2) attend two-hours of training each year of their 3-year license.  Exams are offered at DNR field offices, or contact your county extension office to schedule an appointment to watch the training video.   If you are a confinement site applicator and have not attended training yet this year, please make plans now to meet your training requirements.  Do not wait until the end of the year.  If you miss your training this year, you will be required to take the remedial certification exam to be eligible to renew your license when it expires.  More information can be found at:



TRENDS AND DEVELOPMENTS IN HOG MANURE MANAGEMENT: 1998-2009 In the past decade, hog production has increasingly become consolidated, with larger operations producing a greater volume of hog manure on smaller areas. With less cropland for spreading the manure, hog farmers may be compensating through more effective manure management. The authors use data from 1998 to 2009 collected in three national surveys of hog farmers Over this period, structural changes in the hog sector altered how manure is stored and handled. Changes to the Clean Water Act, State regulations, and local conflicts over air quality also affected manure management decisions. The findings further suggest that environmental policy has influenced conservation-compatible manure management practices. The authors examine how the use of nutrient management plans and of practices such as controlled manure application rates vary with scale of production and how these practices changed over the study period. This report is an update of an earlier report, Changes in Manure Management in the Hog Sector: 1998-2004.  Released Wednesday, September 14, 2011.  See



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

The Livestock and Poultry Environmental Learning Center is offering the webcast "Proper Closure of Earthen Manure Storage Structures." The webinar will be held on October 21 at 1:30 p.m. (central) You can find more information by clicking here.

The Heartland Regional Water Quality Coordination Initiative is hosting Conservation Planning, Part II, November 7-10 in Denison, IA.  This course enables TSPs to understand the NRCS conservation planning process.  For more information, click on the above link or contact Joe Lally at 515-294-1496.


Have a safe fall application season,


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.

The crowd at the 2009 Manure Expo watches a demonstration of “injecting” solid feedlot manure.  Click to enlarge

Plan to attend one of the many educational sessions at the 2011 Manure Expo.  CLICK TO ENLARGE