||Page updated/verified: Jun 19, 2012
Fertilizer Product Database
WSDA's fertilizer product database provides information on the total metal concentration of each of the nine heavy metals (arsenic, cadmium, cobalt, mercury, molybdenum, lead, nickel, selenium, and zinc) for which Washington State has developed soil loading standards. The registrants may list a higher value than actually found by the laboratory in order to build in a safety factor. All calculations are based on these values and either the state default application rates or company listed maximum application rates from the registration application. The metal concentration level for each registered product for each licensed company and all companies selling fertilizers will be accessible by the public at this website.
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