Mn sulfate (32%)

Heavy Metals (PPM)

Arsenic       9.8

Cadmium     0.62

Mercury        <0.01

Lead         37.49

Nickel         66.13

Source:   Data From Oregon Department of             Ag Organic Certification Database

Manganese sulfate is used to provide fast-acting available Manganese to your soil. It is allowed in organic farming and is the choice product when manganese is low on a soil test or tissue test.

Zinc sulfate should always be dissolved in water and drenched, sprayed, or fertigated for even distribution. Dry application is risky because the quantities required are too small to apply evenly.