Potassium sulfate (soluble powder)

Heavy Metals (PPM)

Arsenic       <.5

Cadmium     <.1

Mercury        <.002

Lead         0.2

Nickel         0.1


Source:   Data From Oregon Department of             Ag Organic Certification Database

Potassium sulfate is a highly soluble and plant-available source of potassium.

In powdered form, it can be used as a pre-plant amendment or mid-season feed.

The high solubility of Potassium sulfate makes it very easy to dissolve in water and fertigate or drench mid-season.