Product Introduction

Diquat is a widely used herbicide that is substituted for paraquat, which is used to control aquatic weeds in public waters such as ponds, lakes, reservoirs, marshes, bayous, drainage ditches, canals, streams, rivers, and other slow-moving or quiescent bodies of water.

Mode of action

When acting as a herbicide, diquat inhibits photosynthesis. In light-exposed plants, it accepts an electron from photosystem I (more specifically ferredoxin), to form its green radical cation:

The electron is then transferred to molecular oxygen, producing destructive reactive oxygen species. In forming these, the diquat dication is regenerated and is again available to shunt electrons from photosystem I to restart the cycle.

Target crops

Potatoes; oilseed rape; fruit including apples, pears, peaches, plums, citrus, olive, grapes; tomatoes; sunflowers; vegetables including beans & peas, carrots, onions, chicory; sugarbeet.

Target weeds

Broad-leaved weeds and grasses

Application