Fertilizer Product Database

WSDA's fertilizer product database provides information on the reported metals levels 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 maximum application rate from the product label. The metal concentration levels for each registered product will be accessible by the public at this website.

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