It is a specialty systemic fungicide. The product is rapidly absorbed by rice plant and translocated towards leaf tips. It is a protectant fungicide that prevents the fungus from penetrating the plant. Inhibition occurs when the fungus attempts to penetrate and establish an infection site inside the plant. In rice blast, the melanin pigment is needed for the hardening of the appressorium and inhibition of the pigment formation in appressorium makes it unable to mechanically penetrate the host plant.