Agriculture Reference
In-Depth Information
Potassium Sulfate 0-0-50
(50% Potassium and 17% Sulfur)
Potassium sulfate is white salt. It's expensive, but you only need two pounds per 1,000
square feet when potassium is low on a soil test, unless you're growing a big crop of plants
with high potassium needs, like potatoes or pumpkins, in which case you might double or
triple that. A 50 pound bag costs $40-$50, but you might be able to find five pounds for
$15 or less.
I don't recommend the chemical potassium sulfate that's made by reacting potassium
chloride with sulfuric acid. Also, don't get this confused with muriate of potash (potassium
chloride, 0-0-60) which is mostly potassium and chlorine, and is one of the most detriment-
al fertilizers in use today. We don't ever want to be adding this much chlorine to our soil
because it kills soil life.
