Fluazinam

Fluazinam is a fungicide used in agriculture to control a wide range of plant pathogens. It is a member of the uncoupler class of fungicides, which work by disrupting the energy production within the fungal cell. Fluazinam is unique among fungicides as it also exhibits nematicidal activity, meaning it can kill nematodes.

Chemistry

Fluazinam is a chloronitrile compound. It is a white crystalline solid with a slight odour. It is not soluble in water and is moderately soluble in most organic solvents. It has a low vapour pressure, indicating that it is not likely to volatilise from dry soil surfaces.

Mode of Action

Fluazinam works by uncoupling oxidative phosphorylation, a process that is essential for energy production in fungal cells. This disruption leads to a rapid depletion of adenosine triphosphate (ATP), the main energy source for most cellular processes. Without ATP, the fungal cell cannot function and eventually dies.

Uses

Fluazinam is used to control a wide range of fungal diseases in a variety of crops, including potatoes, grapes, peanuts, and soybeans. It is particularly effective against late blight and white mold. In addition to its fungicidal activity, fluazinam also has nematicidal properties, making it useful for controlling nematodes in certain crops.

Safety

Fluazinam is classified as a Category III pesticide by the Environmental Protection Agency (EPA), indicating a low level of toxicity. However, it can cause irritation to the eyes and skin, and may be harmful if swallowed or inhaled. Appropriate safety measures should be taken when handling this chemical.

Environmental Impact

Fluazinam is not likely to volatilise from dry soil surfaces due to its low vapour pressure. It is moderately persistent in soil, with a half-life of 30 to 60 days. It has a low potential for bioaccumulation, but its impact on non-target organisms is not well understood.

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