Contans WG is a biological fungicide that controls Sclerotinia
diseases by attacking the disease-causing fungus in the soil before
it can infect a susceptible plant. Contans contains the spores of the
naturally occurring soil fungus Coniothyrium minitans. Once
applied into the soil, C. minitans attacks the black sclerotia (the
resting survival structures of S. sclerotiorum) and destroys them
within two months. This action breaks the "cycle of disease" by
reducing or eliminating the disease-causing fungus from
treated soil.
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