Now showing items 1-17 of 17

  • Advances in dryland farming in the Inland Pacific Northwest 

    Yorgey, Georgine; Kruger, Chad E. (Pullman, Washington : Washington State University Extension, 2017-07)
    The Pacific Northwest is an important wheat production region. In 2015, the National Agricultural Statistics Service indicated that Washington, Idaho, and Oregon harvested more than 240 million bushels of wheat, worth an ...
  • Anaerobic co-digestion on dairies in Washington State : the solid waste handling permit exemption 

    Yorgey, Georgine; Kruger, Chad E.; Steward, Kara; Frear, Craig, 1964-; Mena, Nora (Pullman, Washington : Washington State University Extension, 2011-11)
    This factsheet briefly reviews the role of co-digestion within anaerobic digestion (AD), explains the potential regulatory concerns, and details the solid waste handling permit exemption conditions. An overview of other ...
  • Anaerobic digestion effluents and processes : the basics 

    Mitchell, Shannon M.; Kennedy, Nicholas; Ma, Jingwei; Yorgey, Georgine; Kruger, Chad E.; Ullman, Jeffrey L.; Frear, Craig, 1964- (Pullman, Washington : Washington State University. Extension., 2015-09)
    Anaerobic digesters are used worldwide to produce bioenergy and sustainably treat organic waste from municipal, industrial, and agricultural operations. This fact sheet reviews the basic elements of anaerobic digestion and ...
  • Approaches to nutrient recovery from dairy manure 

    Frear, Craig, 1964-; Yorgey, Georgine; Ma, Jingwei (Pullman, Washington : Washington State University Extension, 2018-02)
    To support dairy, dairy-allied industry, and agency knowledge and decision-making, this paper provides an overview of the major nutrient recovery (NR) approaches now emerging or in use for recovery or removal of P, N, K, ...
  • Biogas upgrading on dairy digesters 

    Kennedy, Nicholas; Yorgey, Georgine; Frear, Craig, 1964-; Evans, Daniel A.; Jensen, Jim; Kruger, Chad E. (Pullman, Washington : Washington State University. Extension., 2015-09)
    Recently the prices for electricity production have fallen in many parts of the US, reducing the profitability of digesters. As received electrical rates have continued to decrease, interest in other higher value end-uses ...
  • Completing a successful feasibility study for an anaerobic digestion project 

    Jensen, Jim; Frear, Craig, 1964-; Kruger, Chad E.; Yorgey, Georgine (Pullman, Washington : Washington State University Extension, 2018-01)
    Today, anaerobic digesters require significant up-front expenditures. As the cost and complexity of anaerobic digesters has grown, so has the demand for analysis of the technical systems and the financial costs and benefits. ...
  • Considerations for incorporating co-digestion on dairy farms 

    Kennedy, Nicholas; Yorgey, Georgine; Frear, Craig, 1964-; Kruger, Chad E. (Pullman, Washington : Washington State University. Extension., 2016-07)
    This publication discusses the impacts of incorporating co-digestion at dairy-based anaerobic digesters. That is, mixing manure with non-manure waste in anaerobic digesters. This information is based on stakeholder ...
  • Digested fiber solids : methods for adding value 

    Jensen, Jim; Frear, Craig, 1964-; Ma, Jingwei; Kruger, Chad E.; Hummel, Rita L. (Rita Lynn); Yorgey, Georgine (Pullman, Washington : Washington State University. Extension., 2016-11)
    Anaerobic digestion (AD) of dairy manure and other organic residuals produces biogas, a source of renewable power and fuel, while also benefitting the environment by capturing and converting methane, destroying pathogens ...
  • Enhancing crop diversity : Steve and Becky Camp 

    Yorgey, Georgine; Kantor, Sylvia; Painter, Kathleen Marie, 1957-; Bernacchi, Leigh; Davis, Hilary; Roe, Dennis (Pullman, Washington : Washington State University. Extension., 2016-10)
    Steve and Becky Camp farm near LaCrosse, Washington, in an area receiving about 12-14 inches of annual precipitation. In this publication, the Camps discuss their strategy for diversifying and intensifying their rotations ...
  • Flex Cropping and Precision Agriculture Technologies : Bill Jepsen : Farmer to Farmer Case Study 

    Yorgey, Georgine; Kantor, Sylvia; Painter, Kathleen Marie, 1957-; Roe, Dennis; Davis, Hilary; Bernacchi, Leigh (Pullman, Washington : Washington State University. Extension., 2016-03)
    Bill Jepson farms in northeastern Oregon, in an area receiving 12 inches or less of annual precipitation. In this publication, Bill Jepson discusses his operation's strategy for flex cropping to make his farm as profitable ...
  • Guide to biosolids quality 

    Mitchell, Shannon M.; Yorgey, Georgine; Kruger, Chad E. (Pullman, Washington : Washington State University. Extension., 2016-05)
    Biosolids are the material produced from digestion of sewage at city wastewater treatment plants. Biosolids may be spread over land for plant fertilization and soil conditioning. This publication summarizes the benefits ...
  • Modeling environmental change : a guide to understanding model results that explore the impacts of climate change on regional environmental systems 

    Allen, Elizabeth; Yorgey, Georgine; Rajagopalan, Kirti; Kruger, Chad E. (Pullman, Washington : Washington State University. Extension., 2015-07)
    This guide focuses on process-based environmental models, particularly those used to model climate change impacts. This type of environmental modeling plays an increasingly important role in understanding the potential ...
  • Nutrient recovery : products from dairy manure to improve soil fertility 

    Benedict, Chris; Harrison, Joe; Hall, Sonia A.; Yorgey, Georgine (Pullman, Washington : Washington State University Extension, 2018-09)
    The purpose of this publication is to increase awareness of nutrient recovery products in the early stages of commercialization. We aim to provide a summary of the status of nutrient recovery products’ research and application ...
  • On-farm co-digestion of dairy manure with high energy organics : stakeholder interviews and literature review 

    Kennedy, Nicholas; Yorgey, Georgine; Frear, Craig, 1964-; Kruger, Chad E. (Pullman, Washington : Washington State University. Extension., 2015-09)
    The Anaerobic Digestion Systems Series provides research-based information to improve decision-making for incorporating, augmenting, and maintaining anaerobic digestion systems for manures and food by-products. This ...
  • Strip-tilled and direct-seeded vegetables integrated with cattle grazing : Eric Williamson : Farmer-to-Farmer Case Study Series : Increasing Resilience Among Farmers in the Pacific Northwest 

    Yorgey, Georgine; Borrelli, Kristy; McGuire, Andrew; Painter, Kathleen Marie, ?d 1957- (Pullman, Washington : Washington State University Extension, 2018-05)
    Eric Williamson raises cattle, vegetables for processing, and grain crops near George, Washington. In this publication, Williamson discusses how strip-tillage and direct-seeding have greatly reduced erosion, lowered costs, ...
  • The rationale for recovery of phosphorus and nitrogen from dairy manure 

    Yorgey, Georgine; Frear, Craig, 1964-; Kruger, Chad E.; Zimmerman, Tara (Pullman, Washington : Washington State University. Extension., 2014-06)
    This publication explains the rationale for implementing emerging phosphorus and nitrogen recovery technologies on dairies, with a particular focus on the Western United States.
  • Variable rate nitrogen application : Eric Odberg : farmer-to-farmer case study series : increasing resilience among cereal-based farmers in the Inland Pacific Northwest 

    Yorgey, Georgine; Kantor, Sylvia; Painter, Kathleen Marie, 1957-; Davis, Hilary; Bernacchi, Leigh (Pullman, Washington : Washington State University. Extension., 2016-10)
    Eric Odberg farms near Genesee, Idaho, in an area receiving about 22 inches of precipitation annually. In this publication, Odberg discusses his experiences with variable rate nitrogen application and direct seeding. This ...