Cyclopyridazine is a phenoxypyridazine herbicide with a new mechanism of action developed by Japan's Mitsui Chemicals. It can be used to control broadleaf weeds and resistant weeds in rice fields. According to the International Council for Action on Herbicide Resistance classification, it belongs to group 33, phenoxypyridazine structural type, and is the only active ingredient in this group. This product is now available in Japan and can effectively control broadleaf weeds and resistant weeds in rice fields.
Mechanism of action
Cyclopyridazine is an inhibitor of homogentisate solanyltransferase, and its target site is a completely new site among commercial herbicides. Cyclopyridazine can also be used to control weeds that are resistant to ALS inhibitor herbicides.
Cyclopyridazine mainly controls broadleaf weeds, sedges and other resistant weeds in cereals, rice fields. It can be used in a variety of rice fields such as direct-seeded rice and transplanted rice at the same time. It is highly safe for rice and has a long lasting effect. It is the first herbicide with a new mechanism of action in more than 20 years and will provide a new and effective tool for herbicide resistance management.
Patent status
The compound patents of cyclopyridazine, such as the European patent (EP1426365) and the U.S. patent (US2005037925), have expired in 2022.
Summarize
Weeds in rice fields have always been a headache for farmers in rice growing areas. In recent years, the resistance of weeds has further increased due to the single use of oxazofen, cyhalofop, propanil, bifenfen and other pesticides. As a new mechanism of action for managing resistant weeds in rice fields, cyclopyridazine is bound to become an effective means for farmers to deal with resistant weeds in the future. Proper rotation of medicines can greatly increase the effectiveness of the medicine and also extend the service life of the medicine.
