Matt from Richmond, Va writes
This product says it is derived from potassium phosphite.
Phostrol Fungicide is a systemic fungicide that provides both preventive and curative control of diseases for sensitive crops. TurfGrassPro Phite 0 - 0 - 26 is a potassium phosphite fertilizer that has been formulated to help turfgrass battle stress resistance, certain diseases, and maximize overall performance.
Answer last updated on: 08/27/2020