Manure and the Environment

Because of a growing concern about manure irrigation, the University of Wisconsin Extension assembled a workgroup to research the concerns. The workgroup included scientists, public health specialists, state agency experts, farmers, conservationists and others. Over the course of two years, the group gathered and studied the science of manure irrigation, which culminated in a report that contains findings, responses and recommendations. This article will review a few of their findings related to bacterial transport as well as highlight some of the reasons why a farmer might opt to apply manure via irrigation rather than other ways.

Management is the key to keeping dust under control. By using some basic dust control techniques, open feedlots can prevent or minimize the problem.

A Nebraska Extension pilot project is assisting pork producers in calculating their swine farm environmental sustainability footprints in a joint effort with the University of Minnesota Extension.

Iowa State University researchers concluded from a long-term field study that poultry manure, when applied at a rate to meet the crop nitrogen (N) requirements, can reduce nitrate loss and achieve equal or better yields in corn soybean production systems. While this research focused on nitrate (NO­3-N) loss by field-tile drains (typically placed 3 to 6 feet deep), similar trends would be anticipated in Nebraska for nitrate leaching below the crop root zone and the eventual impacts on surface and ground water quality.

Growth in Nebraska’s livestock and poultry industries is greatly influenced by county zoning and local decision-making. Variation in policies among counties and in decisions made by county officials creates significant challenges for current and prospective livestock operations and for rural communities looking to remain vibrant and create new revenue to support local resources. The Nebraska Livestock Siting Assessment Matrix is approved for use and recently updated for continued dissemination by the Nebraska Department of Agriculture.

An undesirable combination of precipitation events and freeze/thaw cycles has contributed to some very muddy feedlot surfaces in the winter and spring of 2019 in Nebraska. Preventative design and management options exist for minimizing the occurrence and extent of muddy open feedlot conditions, but very few ‘fixes’ exist for addressing muddy conditions once they are in place. Additional information on your options follows...

It is important that farmers and agriculturalists to implement practices to reduce the runoff of antibiotics. This article helps recognize existing conservation practices one has already implemented that are limiting these risks and additional options that may be considered.

Agriculture in the United States provides a contribution to greenhouse gases, accounting for 9% of total emissions (US EPA). Animal agriculture is a large contributor. In beef production, both cow-calf operations and feedlots produce these gases. By implementing simple changes in cattle’s diet, though, there are several ways to reduce the number of these greenhouse gas emissions.

On a brisk April day, I was traveling with a group of adventurers through the wilds of the Minnesota country side. We came upon a steep embankment and climbed it so that we might see what lay beyond. When I reached the top, and the crowd around me had parted, I thought for a moment I might suddenly have traded places with Samwise Gamgee, hobbit, because I was gazing out onto a field of what reminded me very much of the steaming slag pits of Mordor.  However, rather than an apocalyptic hell-scape I was instead looking at a premier example of sustainable agriculture.

Animal agriculture often endures criticism from neighbors and consumers relative to sustainability. But when it comes to management of carbon and nutrients, animal agriculture has a positive story to share. Many environmental and sustainability organizations promote the importance of a “circular economy” for increasing sustainability. Those engaged with Nebraska agriculture should help our neighbors and consumers recognize agriculture’s long term practice of implementing this circular economy. This article will help introduce agriculture’s circular economy for nitrogen (N), phosphorus (P), carbon (C), and other nutrients and messages you might share with neighbors and consumers about the Nebraska Advantage for sustainability.

Manure storage and its application on crop land may contribute a form of environmental contamination: antimicrobial resistant bacteria. These bacteria in manure are perceived to cause diseases in humans through environmental contamination. However, a recent study in University of Nebraska-Lincoln feedlots near Mead, Nebraska concluded that long-term manure storage as static stockpiles has the advantage of inactivating antimicrobial resistant bacteria, and it has potential to reduce antimicrobial resistance genes.

Algal blooms may occur in bodies of water with excess amounts of nitrogen and phosphorus. These algal blooms are detrimental to fish populations, other animal populations, and possibly human health.