Quote:
Originally Posted by Jamie p
I have a product at work called potassium magnesium sulfate. Sulfur 22 percent potassium 18 percent and magnesium 11 percent. Would this be good for make part of a fertilizer?
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Yes, that is commonly called Sul-Po-Mag and used in the design of some "complete" commercial fertilizers. Here is a blurb I wrote a while back on care of fruit trees. Check the "Feeding" section for some hints on designing your own:
Fruit Tree Care & Feeding