Resistance Risk and Current Status
Dicarboximides were originally introduced for control of Botrytis cinerea, primarily on vines where they were welcomed due to the occurrence at the time of resistance to MBC fungicides. Resistance management strategies were poorly understood at the time and this inevitably led to overuse of the products such that resistance developed very quickly. Botrytis remains the main fungus at risk although resistance in other genera can easily be found (Table 1).
Table 1. Fungi resistant to dicarboximides (based on Pommer & Lorenz 1987)
Pommer, E-H., Lorenz, G. (1987) Dicarboximide fungicides. In: Modern Selective Fungicides. Ed H Lyr, Gustav Fischer 1987, pp99 – 118.