Cell Membrane Disrupters

Family: Bipyridilium

Example: Diquat (Diquat) and paraquat (Gramoxone)

Crop Use: Potato vine desiccation

Movement: None, contact herbicide

Potato Injury: By diverting electrons from photosynthesis, these compounds cause the formation of hydrogen peroxide which disrupts cell membranes. Drift injury of these potato vine desiccants appears as leaf speckling or necrotic spots on leaves.