IMMAG Updates

January 2013 (2)

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.

"I know I read about that issue in my IMMAG newsletter but now I can’t find it." Previous issues of the IMMAG newsletter are archived on the Current News tab of the IMMAG Web page. Once there, click on "IMMAG Updates" in the gray drop down box in the left navigation to find previous issues of the newsletter.

Winter Manure Application. Here is a general reminder about winter application of manure in Iowa.  The law is specific as to what types of livestock operations are affected by this law, but caution is urged to all when considering manure application in winter. It is not recommended and can pose a large risk of loss of nutrients to surface water. The law prohibits liquid manure application from confinement facilities (over 500 animal units) with liquid manure from Dec. 21 to April 1 if the ground is snow-covered. If manure can be properly injected or incorporated, it can be land applied during this time. Snow-covered ground is defined as soil having one inch or more of snow cover or one-half inch or more of ice cover. The law also limits manure application on frozen ground beginning February 1, annually. You can read more information about Iowa’s winter application law from DNR at:
Limits on Winter Manure Application for Confinements Start Late December.

Other things you need to consider if you are thinking about applying manure in the winter. First, if you have a NPDES permit, be sure to read the conditions of your permit. Generally speaking, winter application of manure is not allowed in a NPDES permit. Also, if you have a nutrient management plan or Comprehensive Nutrient Management Plan with USDA-NRCS please consult your plan or call NRCS to determine if winter application is allowed.

USDA-NRCS 590 Standard. The Iowa NRCS is in the process of making changes to the 590 Nutrient Management Standard.  Public comment is open until February 6, 2013. Read the press release here or access the draft standard and a list of changes to the standard by visiting:


If you have questions about Manure Applicator Certification, please contact your local County Extension office or refer to our earlier January newsletter for specific details:


This initiative is aimed at helping small feedlots and dairy operations (less than 1,000 animal units) better understand pollution potential of open feedlots. In the fall of 2012, Iowa State University Extension and Outreach in cooperation with initiative partners hosted a field day at the Bob Ziegmann farm near Wall Lake, Iowa. Manure Manager Magazine features this feedlot, the challenges faced, and the practices put in place and highlighted at the fall field day in their recent edition. You can access this success story on page14-17 in the January/February 2013 edition of Manure Manager.


Recently, two existing manure video segments produced by the Iowa Learning Farms with assistance from IMMAG, were translated into Spanish by the Livestock and Poultry Environmental Learning Center. Both videos focus on how to take manure samples.

You can access the entire Iowa Learning Farms video, Manure Management and Conservation, (in English) via the link or by visiting the Iowa Learning Farms or IMMAG Video Web page


Iowa State University Extension and Outreach recently revised PM 1872, Manure Management Resources for Beef and Dairy Operations to include updated links and new ISU personnel


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

Did you miss the January 25th LPELC Webinar, Manure Application Risk Management Tools and Advisory Systems? LPELC webinars are archived here. The next webinar is scheduled for February 15 at 1:30 p.m. (central) and will highlight the upcoming Waste To Worth Conference in Denver.

January-February 2013. Iowa Confinement Site Manure Applicator Certification Workshops. For a list of dates and locations please click here.

March 20. ISU Extension and Outreach and Iowa NRCS will sponsor an Introductory RUSLE2 and Iowa P-Index workshop at the Polk County Extension and Outreach Office in Altoona, IA. Registration will open in early February. Watch the IMMAG events page and the February IMMAG newsletter for more details. 

April 1-5, 2013. The Waste to Worth: Spreading Science and Solutions conference will be held in Denver, CO. Registration is currently open.


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

Copyright © 2013, Iowa State University. All rights reserved.


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