Pagel’s Ponderosa Dairy – Background  – Brochure
Wayside Dairy – Background


Dr. Mark Borchardt
Soil Microbiologist, USDA-ARS, US Dairy Forage Research Center

Manure Irrigation in Wisconsin and the Human Health Risk

Manure irrigation offers several potential benefits to dairy producers; however, manure often contains pathogens that could be transmitted by airborne routes to people living downwind from the irrigation site. This presentation will report pathogen transport distances during manure irrigation by traveling gun and center pivot. Setback distances to reduce infection risks, as estimated by quantitative microbial risk assessment, will also be reported.

Richard Castelnuovo
Resource Management and Engineering Section Chief , Dept. of Agriculture, Trade and Consumer Protection

Wisconsin’s Livestock Facility Siting Law

Dr. John Chastain
Associate Professor, Agricultural Waste Management, Clemson University

Planning a Solid-Liquid Separation System to Meet Manure Treatment and Management Goals

There are many reasons to add solid-liquid separation to the manure management system on a particular farm. One of the critical steps in the planning process is to clearly define the immediate and future treatment and management goals. For example, one goal may be to use solid-liquid separation to consolidate valuable plant nutrients from flush manure so that they can be better utilized for crop production. Another may be to reduce the loading rate for a biological treatment process. Yet another may be to reduce the size of an anaerobic digester. Not every technology will meet these diverse requirements.  The goal of this presentation is to provide a decision framework that will assist in the selection and implementation of solid-liquid separation technologies that will meet farm-specific manure treatment and management goals.

Stephen Dvorak
DVO, Inc

Nitrogen Capture

Stephen Dvorak designed DVO’s patented digester in 1999, and built the first of this unique new design in 2001. DVO has since installed almost 100 digesters at over 70 sites in 16 states within the USA


Jerry Halverson
Department Director, Manitowoc County Soil & Water Conservation

Wisconsin’s Livestock Facility Siting Law

Dr. Kevin Janni
Professor, Dept of Bioproducts and Biosystems Engineering, University of Minnesota

Manure Odor Management

Odors can evoke strong emotions and stimulate physiological responses. Animal feeding operation owners and managers need to be aware of their emissions and the impact they have on their neighbors and community. Good neighbor relations and effective communications help identify odor problems and communicate actions to manage them. When considering mitigation practices weigh the costs, expected effectiveness, and how the practice fits into the overall operation while being mindful of neighbor and community concerns.

Dr. Becky Larson
Assistant Professor, Dept of Biosystems Engineering, University of Wisconsin-Madison

Manure Irrigation Practices and Recommendations for Use

Manure irrigation has benefits and drawbacks depending upon the design of the system and the environmental conditions when in use.  This presentation will cover the design and use of irrigation systems and practices to limit environmental impact.  This includes information from the 2015 report from the Wisconsin Manure Irrigation Workgroup.  This information covers an in-depth evaluation of manure irrigation design and operational practices and their impact to air quality, water quality, droplet drift, and odor when compared to other land application practices.

Dr. Mark Powell
Soil Scientist, USDA-ARS, US Dairy Forage Research Center

The Rations We Feed Dairy Cattle Impact Manure Chemistry and Nutrient Dynamics in Soil, Water and Air

The purpose of this paper is to illustrate how different types and amounts of forages, concentrates, protein supplements and phosphorus (P) fed to dairy cows impact carbon, nitrogen and P in manure and their transformation in soil water and air. Our results demonstrate that profitable rations can be fed to satisfy the nutritional demands of healthy, high production dairy cows, reduce manure nutrient excretion, and therefore the environmental impacts of milk production.

Doug Renk
Biological Commissioning Engineer, BIOFerm USA

Compact, Containerized Anaerobic Digester: On-Farm Energy Creation for Small-Medium Dairies

This presentation on small-scale digestion reveals the feasibility, inputs, processing, function, and outputs of the compact digester currently being utilized at a 136 head Wisconsin dairy. Attendees will learn the installation of site components, feedstock amount and energy production, as well as biogas end use, farm logistics and the overall impact for dairies in the US.

Dr. Ariel Szogi
Soil Scientist, USDA-ARS, Coastal Plains Soil, Water, and Plant Research Center

Nutrient Recovery Technologies from Animal Manure

Nutrient pollution, caused by too much nitrogen and phosphorus in the environment, is one of America’s most widespread, costly and challenging environmental problems, impacting many sectors of the U.S. economy that depend on clean water. The presentation will feature new ARS technology developed for recovery of nitrogen and phosphorus from animal manure and their potential use in dairy manure management systems.

Gordon Speirs
Owner, Shiloh Dairy, LLC

On-Farm Advanced Manure Treatment – Experiences From the Farm

Gordon Speirs from Shiloh Dairy LLC, a 2000 cow family dairy in Brillion WI, will share his experience with treating manure and using Reverse Osmosis (RO).  Shiloh Dairy, LLC uses Livestock Water Recycling technologies to concentrate the manure stream.  The farm reuses the liquid recovered from the RO on the farm.

Dr. Mark Stephenson
Director of Dairy Policy Analysis, University of Wisconsin-Madison

Mark Stephenson is the Director of the Center for Dairy Profitability.  Mark works on economic issues related to the dairy industry, including policy and market outlook.  He also works at the firm level where major efforts are focused on costs of production. Mark has built an online application that helps producers evaluate the cost of waste handling on their operations.  The traditional approach of enterprise accounting is difficult at best and inaccurate at worst.  The application utilizes an economic engineering approach to build up the costs of systems used on a farm and requires fairly simple inputs from the user.

Aaron Wunderlin
Research Specialist, University of Wisconsin-Discovery Farms

Evaluation of Feed Storage Leachate and Runoff System Design and Operation

As the use of bunker silos, stacking pads, silo bags, and commodity sheds are used more extensively for feed storage, concerns have arisen regarding the potential of leachate and runoff moving from these storage systems to waters of the state. Leachate and runoff collection systems have been designed to capture the leachate considered to have the most risk and store it for land application, while the rest overflows to a vegetated treatment area.  UW-Discovery Farms and members from the UW-Madison Biological Systems Engineering department have combined on-farm research efforts to evaluate the effectiveness of current leachate system designs and provide new optimized design recommendations to maximize nutrient collection and minimize volume collection.