This collection contains publications by WSU Extension.

Recent Submissions

  • Assessing and managing cold damage in Washington vineyards 

    Moyer, Michelle, 1982-; Mills, Lynn J.; Hoheisel, Gwen-Alyn; Keller, Markus, (horticulturist) (Pullman, Washington : Washington State University Extension, 2019-10)
    During the winter, grapevine varieties require some degree and duration of low temperature exposure in order to fulfill plant chilling requirements. Adequate chilling is critical to uniform and timely budbreak the following ...
  • Hessian fly management in wheat 

    Whaley, Dale K. (Pullman, Washington : Washington State University Extension, 2019-09)
    The Hessian fly Mayetiola destructor, is considered one of the oldest and most damaging insect pests to wheat (Triticum spp. L.). Originally from Asia, it is believed to have been introduced in straw bedding used by Hessian ...
  • Modeling environmental change : scenarios in the Washington water supply and demand forecast 

    Allen, Elizabeth; Hall, Sonia A.; Adam, Jennifer C.; Brady, Michael P.; Barber, Michael E.; Stockle, Claudio O.; Barik, Muhammad; Yorgey, Georgine; Rajagopalan, Kirti; Kruger, Chad E. (Pullman, Washington : Washington State University Extension, 2019-09)
    This publication introduces policy makers and natural resource managers to the use of scenarios in environmental modeling. Managers increasingly recognize that the climate is changing and that those changes pose a threat ...
  • The efficacy and environmental consequences of kelp-based garden products 

    Chalker-Scott, Linda (Pullman, Washington : Washington State University Extension, 2019-09)
    Processed seaweeds, especially kelps, are heavily marketed to gardeners as biostimulants, fertilizers, soil conditioners, disease suppressants, and environmental stress reducers. This publication reviews the published ...
  • Using cereal straw bales in home gardens 

    Chalker-Scott, Linda (Pullman, Washington : Washington State University Extension, 2019-09)
    Once a popular commercial method of growing commercial crops, straw bale gardening is experiencing a resurgence among home gardeners. This publication addresses the scientific research behind straw bale gardening and ...
  • Growing wasabi in the Pacific Northwest 

    Miles, Carol A.; Daniels, Catherine H., 1957- (Pullman, Washington : Washington State University Extension, 2019-07)
    Wasabi (Wasabia japonica [Miq.] Matsum. syn. Eutrema japonicum) is a perennial plant native to Japan. It is a member of a plant family commonly known as mustards and, like them, is primarily used as a condiment. Scientifically, ...
  • Grazed cover cropping : Drew Leitch 

    Yorgey, Georgine; Borrelli, Kristy; Painter, Kathleen Marie, 1957-; Finkelnburg, Doug (Pullman, Washington : Washington State University Extension, 2019-07)
    Drew Leitch, whose farm in Nezperce, Idaho receives between 17 and 23 inches of precipitation annually, has been experimenting with using cover crops in his dryland wheat rotations and has achieved promising early results ...
  • Soil biota in orchards 

    DuPont, S. Tianna (Pullman, Washington : Washington State University Extension, 2019-04)
    The soil is alive. In just one acre of agricultural soil there can be 5,000 pounds of bacteria and fungi, 800 pounds of arthropods, 300 pounds of protozoa, and 100 pounds of nematodes. These organisms provide many ecosystem ...
  • Do black walnut trees have allelopathic effects on other plants? 

    Chalker-Scott, Linda (Pullman, Washington : Washington State University Extension, 2019-03)
    Gardeners have heard that black walnut trees (Juglans nigra) contain a toxic chemical called juglone that will kill any other plants growing nearby. This phenomenon is called allelopathy, and, in recent years, many other ...
  • Cornmeal and corn gluten meal applications in gardens and landscapes 

    Chalker-Scott, Linda (Pullman, Washington : Washington State University Extension, 2019-03)
    Cornmeal and corn gluten meal, both products from corn milling, are readily available to home gardeners. This fact sheet reviews the horticultural science behind each of these products and explains whether they have a legal ...
  • 2019 crop protection guide for tree fruits in Washington 

    DuPont, S. Tianna; Beers, Elizabeth H. (Elizabeth Hull), 1955-; Nottingham, Louis, 1972-; Grove, Gary G.; Amiri, Achour; Daniels, Catherine H., 1957-; Schmidt, Tory; Kangiser, Joel; Klaus, Michael; Taylor, Lagene F.; Steffen, Gerald R.; Jones, Wendy (Pullman, Washington : Washington State University Extension, 2019-03)
  • Unmanned aerial systems in agriculture. Part 3, Mid-sized UAS 

    Khot, Lav R.; Hoheisel, Gwen-Alyn; Zhou, Jianfeng, ǂd 1978- (Pullman, Washington : Washington State University Extension, 2019-03)
    In recent years, the agribusiness industry has been trying to keep pace with rapid developments, one of which is in the sector of small unmanned aerial systems (UASs). These systems have gained the attention of growers and ...
  • Silver scurf begins belowground on potatoes in Western Washington 

    Inglis, Debbie, 1953-; Gundersen, Babette (Pullman, Washington : Washington State University Extension, 2019-03)
    Photographs of multiple sporulation and infectioncycle events on decaying seed potato pieces, including the roots, stolons, and progeny tubers of potato plants, indicate that silver scurf caused by Helminthosporium solani ...
  • Chronic conditions and hospitalizations : findings from a rural hospital 

    Mandal, Bidisha (Pullman, Washington : Washington State University Extension, 2019-03)
    It is important to understand if current healthcare systems are utilizing hospital resources efficiently and cost-effectively, and whether patients are receiving appropriate care in a timely manner. One of the ways to ...
  • The dairy bio-refinery 

    Yorgey, Georgine; Frear, Craig, 1964-; Kennedy, Nicholas; Kruger, Chad E. (Pullman, Washington : Washington State University Extension, 2019-03)
    Anaerobic digestion is a notable waste management technology that produces renewable energy while improving livestock manure management. The process reduces the release of greenhouse gas emissions (GHGs), volatile organic ...
  • Use of protective netting in Washington State apple production 

    Mupambi, Giverson; Layne, Desmond R.; Kalcsits, Lee A.; Musacchi, Stefano; Serra, Sara; Schmidt, Tory; Hanrahan, Ines (Pullman, Washington : Washington State University Extension, 2019-02)
    Washington State (WA) is the largest producer of apples in the United States. The major apple growing regions in WA are located in the semi-arid eastern half of the state which experiences harsh environmental conditions ...
  • Apple replant disease 

    Hewavitharana, Shashika Shivanthi, 1985-; DuPont, S. Tianna; Mazzola, Mark, 1960- (Pullman, Washington : Washington State University Extension, 2019-02)
    Replant disease is a widespread problem in areas that grow tree fruit and nuts, greatly impacting intensive apple production. It is characterized by reduced productivity in fields repeatedly planted to the same or closely ...
  • Garden fertilizer calculator 

    Cogger, Craig George, 1950- (Pullman, Washington : Washington State University Extension, 2019-02)
    These worksheets calculate fertilizer application rates for gardens, garden beds, lawns, single plants, and short rows, based on fertilizer recommendations. It is a companion to A Home Gardener’s Guide to Soils and ...
  • Using biosolids in gardens and landscapes 

    Cogger, Craig George, 1950- (Pullman, Washington : Washington State University Extension, 2019-02)
    Closing the recycling loop means turning waste materials into useful products. We close the recycling loop in our gardens and landscapes when we use compost made from yard debris and food waste, and organic fertilizers ...
  • Phytophthora crown, collar, and root rot of apple and cherry 

    DuPont, S. Tianna; Hewavitharana, Shashika Shivanthi, 1985-; Mazzola, Mark, 1960- (Pullman, Washington : Washington State University Extension, 2019-02)
    Phytophthora rots can girdle the scion (collar rot), damage the rootstock just below the soil surface (crown rot), and cause necrosis and death of fine roots (root rot). While generally considered a larger problem in ...

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