Sulfate Of Potash 0-0-52 - 5#

(0-0-52) The most economical source of available potassium. Moderate to fast-release. If your soil has sufficient magnesium, this is the potassium fertilizer for you! Since it is water-soluble, it can even be mixed into drip irrigation systems.
Test your soil to determine the precise application rate you need. If your soil has a potassium deficiency, you will likely need to apply 200–500 lb per acre, or 5–10 lb per 1000 square feet.