Informative Resources
King County Biosolids Recycling Program
King County Biosolids Recycling has developed an online biosolids library, fully stocked with educational handouts, informational brochures and posters, research documents and more. View the King County Biosolids Recycling Website.
Fertilizing with Biosolids
An exceptionally informative Pacific Northwest Extension Publication produced collaboratively by OregonState University, University of Idaho, and Washington State University
Highlights of this paper include: Biosolids as a Nutrient Source, Soil testing, Biosolids Nitrogen, Biosolids Phosphorus, Biosolids Sulfur, Soil pH; Fertilizer Replacement Value of Biosolids, Soil Quality; Crop Management Considerations; Forage Quality; Heavy Metals; Biosolids Quality and sources for more information.
NBMA Biosolids and Wheat Production: Summary of On-Farm Research at 11 Sites
Publication by Northwest Biosolids Management association; collaborated research by Craig Cogger, Andy Bary, Jim Kropf, liz Myhre, and Todd Shearin, Washington State University, Puyallup Research and Extension Center; Dan Sullivan, Dept. Crop and Soil Science, Oregon State University
This research compares biosolids and inorganic nitrogen in a range of dryland wheat conditions and concludes that biolosilds effectively and economically replaces inorganic nitrogen.