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Nutrient
Management

  Livestock Air Emissions Get a Hard Look
  On-Farm Sampling Targets More Accurate Book Values for Manure
  New Video Delves into Foaming Manure Pit Issues
  Researchers Convert Biowaste into Crude Oil
  Webcast Provides Details about Digested Manure
  North American Manure Expo Headed to Nebraska

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Livestock Air Emissions Get a Hard Look

Experts from six universities examine a large amount of data on the topic of air quality and focus information and conclusions around the key livestock areas of swine, poultry, dairy and beef in a recently released issue paper entitled, "Air Issues Associated with Animal Agriculture: A North American Perspective." The analyses contained in the paper look at a wide scope of issues ranging from greenhouse gas emissions to the logistics of manure storage facilities. The Council for Agricultural Science and Technology (CAST) created the issue paper in order to offer research-based information pertaining to an often-controversial topic.

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On-Farm Sampling Targets More Accurate Book Values for Manure

North Dakota State University (NDSU) nutrient management specialists have offered to make on-farm visits to help producers sample manure properly and determine agronomic manure application rates. The nutrient management specialists want their farm visits to be an educational opportunity for producers.

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New Video Delves into Foaming Manure Pit Issues

The Iowa Manure Management Action Group (IMMAG) has posted a video that provides insight into the causes of foaming in manure pits. Foaming pits have become more prevalent in recent years, causing explosions and flash fires in some cases. The new, 32-minute video features University of Minnesota Agricultural Engineer David Schmidt discussing the issues and theories about what may be causing the explosions and fires. The video provides an update about ongoing research into foaming manure pit challenges.

See the video at www.vimeo.com/.

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Now’s the Time to incorporate a Slurrystore System into your nutrient management program. Slurrystore is compatible for any system whether your goal is long term storage, nutrient retention, green containment, digesters or manure processing. Plus Slurrystore Systems include the added feature of agitation to help ensure nutrient consistency. Click here or contact your local Authorized Slurrystore Dealer for more information.

Researchers Convert Biowaste into Crude Oil

University of Illinois (UI) researchers have expanded research efforts devoted to converting swine manure into oil. Now human, animal and food processing waste are being used, along with algae, as part of a process called hydrothermal liquefaction (HTL). During this process, high-moisture biowaste is subjected to elevated temperatures and pressures in order to break down and reform the biowaste into a crude oil. The conversion mimics the natural geological processes that produced the world's current fossil fuel reserves. After the biowaste is converted, the resulting waste water still contains nitrogen and phosphorus that can be used to grow algae. The algae are then fed back into the HTL reactor, as a sole feedstock or as an additive, to be converted into additional crude oil.

"This synergistic process is extremely advantageous. We clean the waste water, capture the carbon, convert it into biomass and produce more crude oil. We can produce the energy and at the same time enhance the environment," says Yuanhui Zhang, professor in the UI Agricultural and Biological Engineering Department. The "grand goal" is to completely replace petroleum using biowaste and algae, he says. Learn more at www.aces.uiuc.edu/.

Webcast Provides Details about Digested Manure

An eXtension webcast scheduled for May 20, 2011, will address topics related to using anaerobically digested manure. Experts from Washington State University (WSU) and the U.S. Environmental Protection Agency (EPA) will talk about monitoring protocols, what happens to nitrogen after manure has been anaerobically digested (AD), the effect of AD manure on grass yield and nitrogen uptake, manure bacteria after AD, and the fate of bacteria after land application of AD manure. Speakers include John Gay, associate professor in the Agricultural Animal Health Program (AAHP) Field Disease Investigation Unit of the WSU Department of Veterinary Clinical Sciences, Joe Harrison, WSU animal science faculty member, and Liz Whitefield, WSU Livestock Nutrient Management Program project manager. Additional information will be provided by Allison Costa, national program manager for AgSTAR in the EPA Climate Change Division in Washington, DC. The webcast will begin at 2:30 p.m. (EST). Learn more about the webcast and find instructions to participate at www.extension.org/.

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North American Manure Expo Headed to Nebraska

The 2011 North American Manure Expo will be held July 20 at the Northeast Community College Ag Complex near Norfolk, NE. The event features approximately 50 exhibitors from throughout the United States and Canada, displaying and demonstrating manure handling equipment and technology. The event travels to a new venue each year and includes educational sessions in addition to commercial field demonstrations. A new display this year will demonstrate manure application through sprinkler systems. Ride-and-drive demonstrations will be available for those who want to get behind the wheel. All demonstrations will be held, rain or shine, on 40 acres next to the ag complex.

The University of Nebraska-Lincoln’s Mobile Computer Lab will be on-site to help producers with manure-related computer questions on topics such as the newly revised P-Index, the Purdue Manure Management Planner and the National Air Quality Site Assessment Tool.

The 2011 North American Manure Expo is sponsored by the University of Nebraska-Lincoln Extension Service and other land-grant colleges in partnership with Nebraska custom manure applicators and businesses, and the Iowa Commercial Nutrient Applicators’ Association. The Expo is free and open from 7 a.m. to 5 p.m. For more information, visit manureexpo.org.

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