Product overview
Deliver concentrated phosphite nutrition
Defender K is a concentrated liquid fertilizer derived from potassium phosphite. Every gallon of Defender K contains 3.35 pounds of phosphorous acid.
Potassium phosphite
Provides a concentrated liquid source derived from potassium phosphite.
Phosphorous acid
Contains 3.35 pounds of phosphorous acid per gallon.
Targeted use
Designed for fungal suppression, clean roots, and vascular tissue.