August 8, 2017, Celina, OH – About 40 area developers, politicians, farmers and business leaders gathered July 29 for the Our Land, Our Water Tour to learn more about land and manure-management efforts that could help improve Grand Lake's water quality. The event was hosted at Schmitmeyer Farm near Coldwater and was the second annual tour and presentation meant to bring together local people from all walks of life and educate them on efforts to improve the lake. READ MORE
July 26, 2017, Des Moines, IA - As one of 12 legislators who drafted the bill in 2002 that created the Master Matrix, a current member of the Floyd County Board of Supervisors tasked with reviewing Master Matrix applications, and a lifelong Iowa farmer, I have a unique perspective on the Master Matrix, its failings and how it could be improved.I support the recent petition presented by the Iowa Citizens for Community Improvement and Food & Water Watch because it is needed to restore balance to a system that has failed to adequately protect the rights of all Iowans, and certain precious natural resources unique to different counties, such as Karst topography in northeast Iowa.The Master Matrix is a scoring system that awards points for livestock producers who adopt additional practices greater than the minimum required by state law. Points are awarded for increasing the minimum separated distances between concentrated animal feeding operations (CAFOs) and churches, residences, public-use areas, and bodies of water. More restrictive manure management practices score additional points. The Master Matrix has a total of 44 questions that could result in a perfect score of 880 points, but only 440 points are required to get a passing grade.The Department of Natural Resources' analysis of the Master Matrix shows that certain questions pertaining to separated distances are easy to score points on and nearly every application does. Points are also awarded for practices, such as concrete manure storage structures, that are the industry standard. Other questions requiring air-quality monitoring, the installation of filters to reduce odors, demonstrating community support, implementing a worker safety and protection plan, or adopting an approved comprehensive nutrient management plan are almost never answered. READ MORE
May 29, 2017, Kewaunee County, WI - Kewaunee County is working on a draft ordinance that would require farmers to use low-pressure methods when dropping liquid manure on their fields. It's an alternative to the more controversial method of spraying.For years now Kewaunee County has been battling soil and water issues. It is an area with many concentrated animal feeding operations, or CAFOs.Most of the county's 20,000 residents get their water from private wells, some of which have been contaminated with nitrates.The county is hoping a new ordinance will keep farmers and residents on the same page and solve some of these well issues. READ MORE
July 27, 2016, Nebraska City, NE – Otoe County zoning administrator Dave Schmitz recently told the county board that adjustments are proposed to livestock zoning regulations that a Nebraska court called the strictest in the state. The proposal would still require a mile separation between livestock operations and new houses, but the setbacks between houses and fields, where manure might be applied, may be scaled back. READ MORE
January 6, 2016, Guelph, Ont – Back by popular demand, the Ontario Soil and Crop Improvement Association recently announced the return of the Manure and Biosolids Management Program. Part of the Great Lakes Agricultural Stewardship Initiative (GLASI), the Manure and Biosolids Management Program is available to custom applicators in the Lake Erie and Lake St. Clair watersheds and the Lake Huron southeast shores watershed areas. “The unique advantage of a program designed for custom applicators lies in each business’ ability to impact a larger geography than funding individual on-farm projects,” expressed Andrew Graham, executive director of OSCIA. “It’s the multiplier effect that is so significant within the Manure and Biosolids Management Program.” With algal blooms threatening the quality of water in the Great Lakes, the Great Lakes Agricultural Stewardship Initiative aims to address water quality issues while improving soil health across southwestern Ontario. The Manure and Biosolids Management Program helps drive the GLASI objectives by facilitating the implementation of best management practices (BMPs) that protect soil, minimize the risk of spills, and improve application accuracy to reduce phosphorus loss from the field edge. The first generation of the GLASI Manure and Biosolids Management Program ran this past spring, funding over 75 projects and benefitting nearly 200,000 acres of farmland across the target geography in 2015. Bringing the program back for a second round this winter will further support proactive management by custom applicators and continue to make a positive impact on Lake Erie, Lake St. Clair, and the southeast shores of Lake Huron. Funding for the Manure and Biosolids Management Program is available on a first-come, first-served basis. In order to be eligible, applicants must have an up-to-date Nutrient Application Technician License and/or an up-to-date Prescribed Materials Application Business License and operate in the GLASI eligible area. Funding is provided through Growing Forward 2, a federal-provincial-territorial initiative. For more information on the Manure and Biosolids Management Program, visit the OSCIA website at ontariosoilcrop.org or contact OSCIA directly at 226-706-8669 or
December 22, 2015, Kewaunee County, WI — Officials in Kewaunee County are moving forward with a feasibility study designed to address the issue of farm runoff. County leaders say a bio-digester system could process manure from thousands and thousands of cows. READ MORE
September 18, 2017, Madison, WI – The Wisconsin Department of Natural Resources is considering adopting regional restrictions on manure spreading. If the proposal is accepted, it would mark the first time the agency has considered adopting rules that vary by geographic location. The targeted area currently being considered is comprised of 15 eastern Wisconsin counties. They include: Brown, Calumet, Dodge, Door, Fond du Lac, Kenosha, Kewaunee, Manitowoc, Milwaukee, Outagamie, Ozaukee, Racine, Walworth, Washington and Waukesha. READ MORE
September 18, 2017, Des Moines, IA – Iowa has about 5,000 more pig confinements and cattle lots across the state than originally believed, a report to the federal government last month shows. That's nearly 50 percent more animal feeding operations than the state initially inventoried. The Iowa Department of Natural Resources discovered the facilities through satellite imagery, used to complete a comprehensive survey required under a 2013 agreement with the U.S. Environmental Protection Agency. READ MORE
September 13, 2017, Lancaster, PA – The majority of farms got passing grades in Pennsylvania’s first year of expanded inspections in the Chesapeake Bay watershed. Sixty-five percent of farms inspected under the new program met the manure-management planning requirements, and 63 percent were compliant on erosion and sedimentation planning. READ MORE
September 13, 2017, Sioux Falls, SD – On paper, bigger is safer. South Dakota's regulations for large livestock operations are strict enough that even some water quality boosters believe larger, permitted feedlots are better for the state's waters than smaller, unregulated ones. But how strictly are the strict rules enforced? Critics worry the complaint-driven system falls short, with its announced inspections and what they see as plodding responses to reports of pollution. READ MORE
August 16, 2017, Des Moines, IA – The Natural Resources Conservation Service (NRCS) provides technical and financial assistance to eligible livestock producers to assist with manure and nutrient management from their operations. This article provides updates of interest to producers and technical service providers who may be interested in or are pursuing assistance from NRCS. Open feedlots are an inexpensive but potentially environmentally risky way to operate an animal feeding operation. IA NRCS offers potential incentives to producers to decommission/remove open lots and convert to a roofed, confinement operation. A recently published pamphlet: "Open Feedlot Management – Best Options" offers information regarding open lot to confinement conversion. IA NRCS is in the process of updating the Waste Facility Storage-313 standard. This standard provides technical guidance for planning, design, and installation of agricultural waste containments. Some of the changes include: modification of structural design requirements to account for changes in accepted concrete and timber design, improvements in safety criteria, changing requirement of staff gauge from optional to required, and the addition of criteria specific to solid manure stacking facilities. Specific proposed changes include the removal of the IDNR Open Feedlot Effluent Alternatives for Open Feedlot Operations as an acceptable design alternative to meet NRCS requirements. Also, a minimum design period is being considered for storage facilities to better integrate animal waste systems with current management and cropping systems. A recently published IA Instruction: "Requirements for Subsurface Geologic Investigations for Animal Waste Storage Facilities" provides requirements that apply to technical service providers and other non-NRCS engineers who are providing technical assistance for NRCS programs. Compliance with this instruction will help ensure geologic investigative requirements have been fulfilled as noted in the deliverables of the appropriate conservation practice statement of work. Another instruction of interest for technical service providers for NRCS programs is the "Technical and Financial Assistance for an Animal Feeding Operation and the Associated Land Application of Manure Through a Comprehensive Nutrient Management Plan (CNMP)." This document provides guidance for the specific procedures, roles and responsibilities, and administrative and technical checklists to be used when technical service providers are involved in the conservation planning process for animal feeding operations. For more information regarding NRCS technical and financial assistance visit your local NRCS field office or visit the NRCS website.
August 11, 2017, Olympia, WA – The Washington Department of Ecology has asked an appeals board to dismiss claims by the dairy industry that the agency vastly underestimated the cost of complying with new manure-control rules. A motion filed Aug. 3 with the Pollution Control Hearings Board argues that WDE met its duty to compare costs for small and large dairies. The analysis led WDE to exempt dairies with fewer than 200 cows from the rules, which are meant to keep manure out of water. READ MORE
July 10, 2017, Washington, D.C. - The American Biogas Council, the trade association for the U.S. biogas industry, praises the recent introduction of the Agriculture Environmental Stewardship Act (H.R. 2853), House companion legislation to Senate bill 988. The House bill was introduced by Congressmen Ron Kind (D-WI-3) and Tom Reed (R-NY-23) with 22 original bipartisan cosponsors. That list of supporters recently grew to 25 including Rep. Susan Delbene (D-WA-01), Jackie Walorski (R-IN-02), Elise Stafanik (R-NY-21), Mark Pocan (D-WI-02), Dan Newhouse (R-WA-4), Peter Welch (D-VT), Mike Simpson (R-ID-2), Kurt Schrader (D-OR-05), Glenn Thompson (R-PA-05), Joe Courtney (D-CT-2), David Valadao (R-CA-21), Bob Gibbs (R-OH-07), Todd Rokita (R-IN-04), Thomas Rooney (R-FL-17), Jodey Arrington (R-TX-19), Rod Blum (R-IA-01), Lloyd Smucker (R-PA-16), John Katko (R-NY-24), Steve Stivers (R-OH-15), Mac Thornberry (R-TX-13), Chris Collins (R-NY-27), Tim Walz (D-MN-01), Sean Duffy (R-WI-07), and John Faso (R-NY-19).This bill, along with the Senate companion bill, (S. 988) introduced in early May, will increase agricultural viability by helping to deploy new nutrient recovery and biogas systems that recycles organic material into baseload renewable energy and healthy soil products. The Act provides a 30 percent investment tax credit (ITC) for qualifying biogas and nutrient recovery systems."For a healthy economy, we need healthy soils and clean waterways. Biogas and nutrient recovery systems help us achieve cleaner, healthier soil and water and the Agriculture Environmental Stewardship Act will increase the deployment of these systems," said Patrick Serfass, Executive Director of the American Biogas Council. "We thank Congressmen Reed, Kind and the other co-sponsors of this bill for recognizing the far reaching benefits of sustainable farming where organic material and nutrients should be recycled to create beneficial soil products, baseload renewable energy and jobs."The introduction of H.R. 2853, and the significant bipartisan support it has already received, reflects the critical need to support economically and environmentally sustainable agricultural practices that protect waterways and enrich soils. At the present time, there are no tax incentives to encourage biogas or nutrient recovery systems. A previous production tax credit under section 45 of the federal tax code which promoted the use of renewable electricity expired at the end of 2016. This new credit would promote the production of pipeline quality natural gas and compressed renewable natural gas vehicle fuel as well as nutrients which are essential to agricultural production."By creating incentives to make biogas and manure resource recovery technologies more affordable the Agricultural Environmental Stewardship Act will encourage more widespread use of manure digesters. This benefits society by decreasing nutrient runoff in waterways, decreasing farm odors, and improving water quality," said Jim Mulhern, President and CEO of the National Milk Producers Federation.The Algae Biomass Organization's Executive Director, Dr. Matt Carr has also shared his organization's support. "By supporting investments in algae-based and other nutrient management systems, the Agriculture Environmental Stewardship Act will help farmers recycle valuable ag nutrients back into their operations and reduce the burden on taxpayers of recovering those nutrients downstream. It's a win-win for everyone."
June 28, 2017, Washington, D.C.– The National Pork Producers Council hailed today's announcement by the U.S. Environmental Protection Agency that it will propose a rule to rescind a controversial Clean Water Act regulation that gave the government broad jurisdiction over land and water.The proposal – expected to be published in the Federal Register in the coming days – will repeal the Waters of the United States (WOTUS) rule, which ostensibly was implemented to clarify EPA's authority over various waters.Based on several U.S. Supreme Court decisions, EPA's jurisdiction had included "navigable" waters and waters with a significant hydrologic connection to navigable waters. But the WOTUS rule broadened that to include, among other water bodies, upstream waters and intermittent and ephemeral streams such as the kind farmers use for drainage and irrigation. It also covered lands adjacent to such waters."This is great news for America's pork producers," said NPPC President Ken Maschhoff, a pork producer from Carlyle, Ill. "The WOTUS rule was a dramatic government overreach and an unprecedented expansion of federal authority over private lands."It was the product of a flawed regulatory process that lacked transparency and likely would have been used by trial lawyers and environmental activists to attack farmers," Maschhoff added. "We're extremely grateful to President Trump and EPA Administrator [Scott] Pruitt for recognizing the dire consequences this ill-advised Obama-era regulation would have had on pork producers and all of American agriculture."NPPC helped lead the agricultural community's opposition to the WOTUS rule, including producing maps showing the extent of the lands affected by the regulation. (EPA's jurisdiction in Missouri, for example, would have increased to cover 77 percent of the state under the rule.) The organization also led the legal efforts against the rule, filing suit in a U.S. District Court and presenting a brief to a U.S. Court of Appeals. The latter halted implementation of the WOTUS rule shortly after its Aug. 28, 2015, effective date.Once the proposed repeal rule is published, it will be subject to a public comment period.
June 12, 2017, Washington, D.C. - For the last several years, farmers have cited the increasing number of regulations as one of the biggest challenges facing their business.However, a new administration appears to be trying to change that. President Trump has already used his power by issuing executive orders to roll back some agricultural regulations, but more reform is on the way and may start at the USDA.Secretary of Agriculture Sonny Perdue is chairing an interagency task force with resetting the regulatory tone in agriculture. READ MORE
February 8, 2017, Olympia, WA – Western lawmakers have proposed an amendment to the federal Solid Waste Disposal Act to help farmers understand which manure management rules they’re supposed to follow. HR 848, the Farm Regulatory Certainty Act, would reaffirm and clarify Congress’ intention regarding manure management under the Resources Conservation and Recovery Act of 1976, also known as the Solid Waste Disposal Act. READ MORE
November 30, 2016, Washington, DC – The U.S.Department of Agriculture is seeking new proposals for cutting-edge projects to provide new conservation opportunities through its competitive Conservation Innovation Grants program. The department will invest up to $25 million for projects sparking the development and adoption of innovative conservation technologies and approaches in areas such as conservation finance, data analytics, and precision conservation. READ MORE
April 1, 2016, Washington, DC — The U.S. Environmental Protection Agency (EPA) recently announced the winners of Phase I of the Nutrient Recycling Challenge – a competition to develop affordable technologies to recycle nutrients from livestock manure. The winners received their awards at a ceremony at the White House Eisenhower Executive Office Building in Washington, DC, the first day of a two-day summit with innovators. Every year, livestock producers manage more than a billion tons of animal manure, which contains valuable nutrients – nitrogen and phosphorus – that plants need to grow. Manure can be a resource as a renewable fertilizer, but should be used properly to minimize water pollution and build healthy soils. In November 2015, EPA launched the Nutrient Recycling Challenge in partnership with pork and dairy producers, the U.S. Department of Agriculture, and environmental and scientific experts. The goal of the challenge is to find affordable technologies that can help farmers manage nutrients, create valuable products and protect the environment. “The Nutrient Recycling Challenge is a great example of EPA partnering with farmers to find solutions that benefit everyone,” said Ellen Gilinsky, senior policy advisor for the EPA’s Office of Water. “Through competition, together we are driving innovation to achieve environmental results.” EPA received 75 concept papers from around the world and selected 34 submissions to continue on to Phase II of the challenge. EPA is awarding a total of $30,000 in cash prizes to the top 10 submissions (four Winners and six Honorable Mentions). The following are descriptions of the winning concepts: Slurry Separation with Coanda Effect Separator (by Ahimbisibwe Micheal of Bravespec Systems Ltd.) – Using centrifuge technology to separate smaller nutrient particles from manure, with fewer energy inputs and lower costs. Manure Convertor (by Ilan Levy of Paulee Cleantec Ltd.) – Using chemical processes to rapidly turn manure into a non-toxic, fertile ash fertilizer. Producing Nutrients Concentrated Bio-solids via AnSBEARs (by Bo Hu, Hongjian Lin, and Xin Zhang of the University of Minnesota) – Creating a dry biosolids fertilizer by using a novel anaerobic digestion and solid-liquid separation system. Removal of Dissolved N and P from Livestock Manure by Air Stripping (by Hiroko Yoshida of Centrisys Corporation) – Using CO2 stripping and other processes to create a range of fertilizers from anaerobically digested manure. The 34 selected submissions were also invited to the Nutrient Recycling Challenge DC Summit, in Washington, DC on March 30-31, 2016. The summit will provide a forum for innovators to meet experts and other innovators, as well as learn about resources to develop their ideas into real-life technologies. EPA seeks to create a “brain trust” that can design nutrient recovery technologies that can achieve what both farmers and the environment need. Partners in the Nutrient Recycling Challenge are: American Biogas Council American Society of Agricultural and Biological Engineers Ben & Jerry’s Cabot Creamery Cooperative Cooper Farms CowPots Dairy Farmers of America Innovation Center for U.S. Dairy Iowa State University Marquette University National Milk Producers Federation National Pork Producers Council Newtrient, LLC Smithfield Foods Tyson Foods U.S. Department of Agriculture Washington State University Water Environment Research Federation World Wildlife Fund For more information, visit www.nutrientrecyclingchallenge.org.
August 12, 2016, Ontario, OH – The Ontario planning commission recently voted 4-0 to recommend that city council tweak its noxious odors ordinance, making it potentially a third-degree misdemeanor for farmers to fail to fix issues with strong manure smells from animals. Under the proposed language council will consider, either the zoning inspector or his designee (probably a police officer) would go to the farm to verify whether there is an odor issue that should be corrected. READ MORE
June 24, 2016, Tarboro, NC – A North Carolina Federal Court ruled that an air pollution lawsuit involving a pig farm can proceed. The lawsuit against the Hanor Company of Wisconsin was brought by the Humane Society of the United States (HSUS) plus Sound Rivers, Inc. and involves the farm’s failure to report its ammonia emissions. The court rejected Hanor’s argument that an 11-year-old agreement with the U.S. Environmental Protection Agency (EPA) exempts large farms from reporting emissions while the agency conducts air quality studies. According to the HSUS, the EPA has never completed the air studies at issue.
January 19, 2015 – In order to clean the air of pollutants, biotechnology expert Raul Pineda Olmedo, from the National University of Mexico (UNAM), designed a biofilter that uses microorganisms living in the shell of the peanut. The research from the department of Environmental Technology noted that microorganisms grow naturally on peanut shell, which can be used to clean the air. Furthermore, in Mexico this material is generated in large amounts and is considered a worthless agricultural residue. The idea is a prototype filter with peanut shells, which cultivates the microorganisms to degrade toxic pollutants into carbon dioxide and water, thereby achieving clean air. "The peanut shell is special for these applications because it is naturally hollow and has an area of contact with air, which favors the development of microorganisms," said Pineda Olmedo. He also said it has been observed that this organic material can be applied to biotechnology as biological filters similar to those used by cars, but instead of stopping dust it can degrade the contaminants. The prototype is similar to a bell or kitchen extractor, but it not only absorbs and stores polluting vapors, it degrades and purifies the air. The design consists of a filter made with peanut shells containing microorganisms, which purify the air. For optimum development it should be in a temperature-controlled environment. Olmedo Pineda explained that the filter takes on average 28 days to synthesize microorganisms such as Fusarium and Brevibacterium. Bacteria and fungi take the carbon from pollution to reproduce and breath. In Mexico this technology has not been exploited extensively. The researcher currently seeks to commercialize the innovation, which is a solution applicable to everyday life.
September 1, 2015 – The recent outbreak of avian influenza, a highly contagious viral disease that has infected about 48 million birds in the United States, resulted in a significant loss to the poultry industry. The initial response by the poultry industry to prevent widespread avian influenza was to more stringently enforce the U.S. Department of Agriculture biosecurity measures defined by the USDA Animal and Plant Health Inspection Service (APHIS). However, the continuous spread of the avian influenza made the industry wonder if the disease is airborne and transmitted through ventilation air of poultry facilities. We are looking at major air emissions — ammonia gas and dust particles — from poultry facilities and their potential effects on poultry health to explore the need of additional biosecurity measures to prevent transmission of infectious diseases among poultry in the future. READ MORE
September 1, 2015, Washburn, WI — The Large Scale Livestock Study Committee listened to a presentation from the Wisconsin Department of Health Services (DHS) Dr. Robert Thiboldeaux during its recent meeting. Thiboldeaux is the senior toxicologist of Wisconsin Bureau of Environmental and Occupational Health. His presentation was called Air Quality and Livestock Operations. READ MORE
Mar. 8, 2013 - Manure spills happen for a range of reasons—a manure spreader rolls over, a hose breaks, a storage pond overflows after a relentless downpour. Whatever the cause, these events are such a threat to the environment that states have emergency teams to deal with the hazard. Typically, the responders build dams to contain the spill and then pump out the contaminated water. Although cleanup efforts start as quickly as possible, a fish kill in a nearby stream is often the first evidence that a spill has taken place. Another problem is that sediments in the contaminated water channel can capture phosphorus from the manure and release the nutrient back into the water—sometimes for months on end—at levels exceeding U.S. Environmental Protection Agency (EPA) criteria. But there were few details available about the links between manure spills and phosphorus until Agricultural Research Service soil scientist Doug Smith and doctoral candidate Shalamar Armstrong began to study the issue. Smith, who works at the ARS National Soil Erosion Research Laboratory in West Lafayette, Indiana, was Armstrong's technical advisor throughout the study. ARS soil scientist Chi-hua Huang, also in West Lafayette, and soil scientist April Leytem, who works at the ARS Northwest Irrigation and Soils Research Laboratory in Kimberly, Idaho, were also part of the team. Sizing Up Sediments Armstrong collected sediments from two drainage ditches in the Cedar Creek subwatershed of the St. Joseph River Watershed in northeast Indiana. The land surrounding each ditch was primarily used for row cropping. Three sampling locations were selected so that the study would include sediments from drainage areas that ranged from 768 acres to 10,625 acres. This methodology also ensured that the scientists would be able to assess the effects of different particle size distributions and physiochemical properties on phosphorus absorption. The West Lafayette team added the sediments to an artificial water channel called a "fluvarium" and used swine manure minimally diluted with water to create their own worst-case manure "spill." Then, after 24 hours, they cleaned it up using standard operating protocols for remediating contaminated spill sites. The researchers found the spill simulation initially resulted in an average water column dissolved phosphorus concentration of 5.57 milligrams per liter. The concentrations dropped to between 0.19 and 0.21 milligrams per liter 24 hours later, but they still exceeded EPA standards for rivers, streams, and drainage ditches in the Cedar Creek subwatershed. The scientists also documented that after the spill, the channel sediments were able to capture significant amounts of phosphorus from the water, with adsorption rates ranging from 8.9 to 16.7 milligrams per square meter of sediment per hour. The finest clay loam sediments from the upstream channel sites adsorbed the greatest levels. "These clay loam sediments have a larger surface area available for the chemical reactions that bind the phosphorus to the sediments," Smith explains. "These sediments also have the highest levels of iron, aluminum, and organic carbon, all of which enhance the ability of the sediments to bind phosphorus." However, after the simulated spill cleanup, all the sediments released phosphorus back into the water at rates that caused the phosphorus level in the ditch water to exceed EPA's maximum level by at least 67 percent. Even though the fine-textured clay loam sediments adsorbed the highest levels of phosphorus, the course-textured sandy sediments from the largest drainage areas released the most phosphorus back into the water after cleanup was complete. "These results strongly suggested that the current approaches to remediating manure spills need improvement," Smith says. An Answer in Alum Fortunately, the team had some ideas about where to start looking for improvements. Earlier studies showed that adding alum to poultry litter, swine manure, and other agricultural byproducts substantially mitigates phosphorus release. So they ran a series of tests to see how well alum amendments could stop, or at least slow, the release of phosphorus deposited in channel sediments after manure spills. The researchers added different levels of an alum-calcium carbonate mix to the same sediments they tested in the first study. The calcium carbonate was included to prevent the acidic alum from significantly increasing the water's acidity. They observed that amending the contaminated sediments with 1.6 milligrams of alum-calcium carbonate per gram of sediment suppressed phosphorus release by 92 percent in sandy sediments and by 72 percent in clay loam and loamy sand sediments. Higher amendment levels suppressed phosphorus release in all three soil types by up to 100 percent. In general, greater rates of alum were needed to suppress phosphorus release from the clay loam sediments than from either the loamy sand or the sandy sediments. On average, clay loam sediments required 54 percent more alum to mitigate the release of phosphorus than sediments containing at least 60 percent sand. Adding calcium carbonate to the alum did not completely protect the water column from increased acidification. But water flowing over sediments amended with the alum-calcium carbonate mix was less acidic than water flowing over sediments amended solely with alum. Data from the study was used to develop models to predict the rate of alum application that would be needed to mitigate phosphorus release from contaminated sediments, based on sediment properties. "Our results demonstrated that alum can help sediments retain phosphorus after a manure spill," says Armstrong, who is now an assistant professor at Illinois State University. "We think it has potential for enhancing current manure spill remediation methods." Findings from both studies were published in the Journal of Environmental Quality in 2009 and the Journal of Environmental Monitoring in 2012. "These are the first studies that have examined in detail how manure spills affect in-stream phosphorus fate," adds Smith. This research is part of Water Availability and Watershed Management, an ARS national program (#211) described at www.nps.ars.usda.gov. "Measuring and Managing Impacts of Manure Spills" was published in the March 2013 issue of Agricultural Research magazine.
Researchers look for new ways to reduce nutrient runoffSeptember 12, 2017, Lancaster, PA – At the third Waste…
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INL releases new open-source manure softwareSeptember 7, 2017, Idaho Falls, ID – The Idaho National…
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World Dairy Expo 2017Tue Oct 03, 2017 @ 8:00AM - 05:00PM
American Biogas Council Annual Conference & BioCycle REFOR17Mon Oct 16, 2017 @ 8:00AM - 05:00PM
Sunbelt Ag Expo 2017Tue Oct 17, 2017 @ 8:00AM - 05:00PM
6th International Symposium on Animal Mortality ManagementSun Jun 03, 2018 @ 8:00AM - 05:00PM