IMMAG Updates

February 2013

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.

Click here to see a list of counties in Iowa that have adopted the use of the Master Matrix for 2013 to evaluate confinement livestock construction applications. You can learn more about the Master Matrix by visiting the Iowa DNR Master Matrix web page or by reading the DNR press release.

Lately the day to day weather in Iowa has left us wondering if it is winter or spring. However, winter application rules for manure are currently in place for snow-covered and frozen ground, so if those conditions exist where you farm, please consider how that may affect your manure application practices. You can read more about these rules at "Manure Management: Preparing for Winter Part 2". Even if your livestock operation is not regulated for winter application, you should consider implementing all best management practices if you must apply manure in the winter. The best practice is to avoid manure application this time of year. Best management practices include but are not limited to:

    • Apply manure on the flattest slopes possible
    • Apply manure as far from water sources as possible
    • Be sure to follow all separation distance requirements for land application. See DNR 113 Land Application Separation Distances. Pay attention to Table 2 in this document. These separation distances apply to ALL livestock operations, regardless of size.
    • Avoid application on areas that drain to surface tile inlets.
    • Do not apply manure in a grassed waterway.
    • Wait until after the snow melts.
    • Avoid application prior to predicted rainfall, snow or warming conditions that could cause snow to melt or runoff.

The rain, snowmelt and general sloppiness of this time of year also creates an opportunity for producers with open lots to assess outdoor animal areas for runoff. Take some time to walk below open lots; dairy yards and other outdoor areas where animal congregate to determine where runoff goes. If it goes to a water source, you should take immediate corrective action. There are several resources available for producers to do their own assessments. The first is the Feedlot EMS Assessment worksheet developed by the Iowa Beef Center. A second resource is the Iowa Farm*A*Syst manual, Assessing Your Open Feedlot Manure Management.


If you are a commercial manure applicator or a confinement site manure applicator that will be renewing your manure applicator certification by March 1, 2013, time is running short to meet your certification requirements to either attend training or take and pass the certification exam to avoid paying the late fees. Commercial applicators please contact your ISU Extension and Outreach County Office to schedule an appointment to watch the DVD training or contact your local DNR Field Office to schedule an appointment to take the certification exam.

Confinement site applicators may choose to attend a workshop at the County Extension Office, click here for list, schedule time to watch the training DVD at the ISU Extension and Outreach Office, or schedule an appointment to take the certification exam at the local DNR Field Office.

Commercial manure applicators and confinement site manure applicators that handle, haul or apply dry manure may be interested in attending one of the five remaining dry manure applicator certification workshops.


Several years ago IMMAG published a series of publications related to manure topics called the Iowa Manure Manager Series. Recently, IMMS Vol. 5, Financial Resources for Livestock Producers, was updated. We acknowledge our partners at IDALS and NRCS for updating this fact sheet. Other fact sheets in the series are scheduled to be updated throughout 2013.


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

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

2013 Iowa Pork Regional Conferences sponsored by the Iowa Pork Producers Association and Iowa State University Extension and Outreach will be held at four locations throughout Iowa at the end of February, more information at

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. This workshop will teach attendees how to use the RUSLE2 and P Index software for implementation in a manure management plan. On-line registration is currently open; however it is limited to 30 people. The cost is $200 if you register prior to March 18. Please click on the link to find a list of workshop requirements and additional registration information.

April 1-5, 2013. The Waste to Worth: Spreading Science and Solutions conference will be held in Denver, CO. This 4 day conference has tours, poster, and talks on nutrient management, anaerobic digestion, air quality, manure treatment technologies, water quality, manure storage, handling and mortalities as well as a plethora of other subjects. Registration is currently open. The deadline for early registration and reduced registration fee is March 1. You will find several ISU Extension and Outreach staff members giving talks as well as many of our colleagues from around the upper Midwest. I hope to see you in Denver.


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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