Paraquat Information Center

Paraquat controlling weeds only along the tree lineParaquat is one of the most widely used herbicides in the world, controlling weeds in a huge variety of crops. The Paraquat Information Centre provides comprehensive, factually based information about paraquat. News items, feature articles, case studies and videos cover all aspects of its use in agriculture, and its human and environmental safety profile. In-depth reviews and publications are held in the Knowledge Bank. Paraquat is only sold to farmers. The product is diluted typically 200 times with water to control weeds. Usually surfactant is added and the herbicide is sprayed on to weed foliage. It only works when in direct contact with photosynthesising green tissue. Paraquat is used to control weeds before and after planting in more than 100 crops, including major food crops: corn, rice, soya, wheat, potatoes; major fruits: apples, oranges, bananas; beverages: coffee, tea, cocoa; and processed crops: cotton, oil palm, sugarcane, and rubber. When used in accordance with manufacturers’ recommendations, paraquat can deliver safe, effective weed control, generating social and economic benefits, while protecting the land for future generations.

Paraquat is a unique herbicide because it is:

  • Broad spectrum
  • Very fast-acting
  • Rainfast
  • Inactivated and immobilised upon contact with soil
Paraquat is manufactured and marketed globally under the brand name Gramoxone by Syngenta. Syngenta operates paraquat manufacturing facilities in the UK and China. Several other companies also manufacture paraquat, primarily in China. These include Baofeng, CAC, Luba, Redsun, Sanonda, Sinon, Taoyuan, Xianlong and Yongnong. Numerous other companies trade in paraquat but are not primary manufacturers. A list of other brand names under which paraquat is available can be found here.   Syngenta is the only manufacturer producing paraquat tested and shown to be in compliance with the FAO specification. Please contact the Paraquat Information Center if you have a question not answered by the information contained in this site.