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I purchased a quart of "Hi-Yield" brand "Liquid Iron and Other Micro Plant
Nutrients" at the garden store for $4.99.
Guaranteed minimums are:
Sulfur total 2.000%
Water soluble Copper .125%
Water soluble Iron 2.500%
Water soluble Manganese .250%
Water soluble Zinc. .250%
Made from copper sulfate, ferrous sulfate, manganese sulfate, and zinc
The only thing missing is Molybdenum.
I have potassium nitrate for the nitrogen, and some of the potassium. I
also have some "Muriate of Potash" which might not be a good source of
potassium, as it appears to have a lot of chlorine in it (anyone know if it
is usable?). I have not been able to locate K2SO4 locally yet. I also
have some magnesium sulfate.
Does anyone know if this stuff can make a good substitute for TMG? If so,
does anyone have a suggestion on what else is needed?