
The classification of fungicide development are in categorized in three major group. The most common is SDHI (succinate dehydrogenase inhibitors) or those considered to be SDHI due to their chemical structure characteristics.
SDHIs are considered as one of the largest groups of agricultural fungicides, as well as DMI (demethylation inhibitors) and inhibitors of the mitochondrial electron transport chain complex III, i.e., QoI (quinone outside inhibitors) and QiI (qui- none inside inhibitors).
Post- SDHIs fungicides are now desired as a result of successive reports of resistance of fungal pathogens to existing SDHIs.
DMIs, sterol biosynthesis inhibitors characterized by triazole fungicide, perform a significant role in the plant diseases control because of their wide spectrum, high therapeutic impact and relatively slow development of resistance.
The second global trend is the development of fungicides with a novel mode of action and a special chemical arrangement. Other approach are based plant defense activators as a fungicide with the nutritional effect.