Bisulflufen is a trifluoroethyl sulfide acaricide, and there are currently no commercial varieties of this type.
At present, the mechanism of action of bisulflufen is not clear, but what is known is that bisulflufen is a systemic acaricide that mainly kills by contact and has the following characteristics.
(1) Safe for mammals and non-target organisms. The original drug of Bisulflufen has low oral, transdermal and inhalation toxicity, no irritation to the skin, no sensitization, and low toxicity to fish and daphnia.
(2) Kills all egg mites and is effective on eggs, young nymphs and adult mites. Indoor acaricidal activity research results show that bisulflufen's ovicidal activity is better than ethofenfenil and fenpyrfenpyr, and is equivalent to ethofenazole. The nymphalicide activity is equivalent to that of etoxazole, but better than that of fenpyrfen, spirofenib, and etoxazole. The activity of killing adult mites is lower than that of ethofenacet, and better than that of spirodiclofen, ethofenazole and fenpyrfen.
(3) It has a positive temperature effect, good leaf penetration activity and transverse conduction activity. Applying pesticides from the front can kill harmful mites on the underside of leaves. Its ability to withstand rain erosion is equivalent to that of ethofenil, and artificial rainfall occurs 6 hours after application (rainfall rate is 15 mm/h). The mortality rate of adult mites reached 80% within 24 hours, the hatching rate of surviving adult mites was 76.47%, and the mortality rate of hatched young mites was 100%.
(4) It has a broad spectrum of action, good quick-acting effect, and long-lasting effect. It can prevent and control many common agricultural pests such as citrus spider mites, apple spider mites, two-spotted spider mites, and cinnabar spider mites. Field efficacy test results show that bisulflufen has excellent control effect on citrus Panonychus mites. It is effective 1 to 3 days after treatment and has a lasting effect of more than 21 days. When controlling citrus spider mites, when the average temperature is 25°C, the peak of dead mites will be reached in 1 to 3 days. The peak value is reached 7 days after treatment, which can solve the current pain point of "uncertain removal" of red spider mites. It has a long-lasting effect of 20 to 30 days, meeting farmers' needs for "long-term control". It has a stable control effect against two-spotted spider mites and is better than commonly used pharmaceuticals such as bifenazine.
(5) It has a brand-new structure and a unique mechanism of action. It has no cross-resistance with existing acaricides (including acetonitrile) and has excellent performance against harmful mites. Field test results show that bisulflufen has good control effect on resistant populations of two-spotted spider mites in roses (potted plants and greenhouses), and is significantly better than the comparative chemicals bifenexate and abamectin.
(6) It is safe for the main target crops, relatively sensitive to some melon crops, and has phytotoxicity to some rose varieties. In addition, bisulflufen is safe against beneficial organisms such as predatory mites.
The main crops used for acaricides include citrus (60%), apples/pear (16%), solanaceous vegetables (11%), flowers (5%), cotton (4%), strawberry (4%), etc. With the rapid development of the citrus industry, the acaricide market has grown rapidly.
Bisulflufen has outstanding advantages and is effective against mite eggs, young nymphs and adult mites. It has excellent foliar penetration activity and no cross-resistance with conventional acaricides. It also has root absorption properties and is safe for mainstream crop targets such as citrus, apple and cotton, and is not prone to resistance. This product can meet farmers' increasing needs for pest mite control.
