Phosphites are highly mobile molecules, which can be readily absorbed by both leaves and roots, and are translocated throughout the plant. Prophet triggers molecular reactions within the plant cell to exert its fungistatic effect through activating plants own immune system and defence mechanisms. Phosphonates alter the fungal wall and inhibits its further proliferation by suppressing the spore formation. In this way it controls the disease and its further spread. Therefore, the phosphite molecule has dual mechanism of action. The phosphite induced phytoalexin accumulation in plant as the result of the reactions occurring at molecular level upon fungal infection. Potassium MODE OF ACTION These responses are called systemic acquired resistance (SAR), and induced resistance (IR). The functional potassium in Prophet also provides a certain level of disease protection by keeping the plant cell turgid and inducing growth. phosphite also walls off the pathogen by killing off surrounding plant cells, called hyper sens iti ve reac tion, somewhat like a fire line around a forest fire. This is commonly observed as the yellowing and development of dead necrotic tissue around a diseased area. But the plant responds further, releasing phytoalexins that alert the rest of the plant to start producing other compounds that increase the plant resistance to infection or attack of othe