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Manure

See what farms are using for nutrient management, from anaerobic digesters and storage to field application and emissions.

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manure bedding

When designing a new building or retrofitting an existing facility, there are boundless questions that have to be thought through and answered. One of the many areas, and one that I would argue is the most crucial, is the manure management system.

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Sustainability is a core mission for the University of Wisconsin – Oshkosh. To demonstrate this objective, the university commissioned the building of three anaerobic digesters in the state.

The first was a dry fermentation digester in the city of Oshkosh. The second was a small, plug-flow system at a dairy with 130 head of cattle near Oshkosh, and the third was a large farm, complete-mix digester system at Rosendale Dairy in Pickett, Wisconsin.

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In the dairy industry, we know manure is valuable. But how valuable? Typically we look to nutrient composition as the major indicator of dollars and cents. However, examining when, where, how, how much and even how well manure is applied can help dairy farms of all sizes start to realize its real value.

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Livestock manure is a variable compound, both in the amount of solids and the amount of nutrients.Variation in manure can be caused by animal type, diet, additional byproducts, bedding material, storage and processing.

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technology test drive banner

After six months of using new web-based nutrient management tracking software, California dairyman Brian Medeiros is still trying to make the software his go-to record-keeping source, not just a digital, always-available electronic copy of his paper records.

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earthworm

Fresno State University dairy tests pilot system

You’ve probably heard the horror stories about drinking water and streams being contaminated by dairy wastewater.

Fortunately, while regulations have tightened, the technology to treat and re-use wastewater from dairy farms has expanded. The latest innovation is a sustainable, energy-efficient approach that uses worms and their castings (manure) to generate clean, re-usable water.

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