Sulfentrazone is a sulfonamide-based systemic conductive and selective post-emergence herbicide for wheat fields developed and marketed by Corteva in the United States. It has a broad herbicidal spectrum, high herbicidal activity and fast efficacy.
Sulfentrazone is absorbed through weed leaves, sheaths, stems or roots and accumulates at the growing point. By inhibiting acetolactate synthase, branched-chain amino acids cannot be synthesized, which in turn affects protein synthesis and cell division of weeds, causing weeds to stop growing, turn yellow, and then wither and die. Sulfentrazone is mainly used to control annual grass weeds and some broadleaf weeds in wheat fields.
Mechanism of action
Sulfentrazone is a triazolopyrimidine-based acetolactate synthase (ALS) inhibitor. By inhibiting acetolactate synthase (ALS) in weeds, the target plants are unable to synthesize branched-chain amino acids, which in turn affects protein synthesis and cell division of weeds, causing weeds to stop growing, turn yellow, and eventually die. ALS inhibitors destroy the synthesis of valine, leucine and isoleucine in plants by inhibiting ALS and are present in plants, fungi and bacteria. Since ALS has not been found in humans or animals, saflufenac is not only effective in killing weeds, but is also very safe for humans and animals.
Sulfentrazone is a sulfonamide systemic and selective post-emergence herbicide for winter wheat fields. It has an extremely broad herbicidal spectrum, high herbicidal activity and fast pharmacological effect. It has good effects on common grass weeds in wheat fields and also has certain control effects on broadleaf weeds. The outstanding control effect of saflufenacil on malignant grass weeds such as Japanese wheatgrass, flowering ryegrass, wild oat, hard grass, etc. is the outstanding advantage of saflufenac. Moreover, this herbicide has no cross-resistance with etiofenpyr, clodinafop-propargyl, etc.
Application and herbicide spectrum
Sulfentrazone is mainly used to control grass weeds in wheat, barley and highland barley fields. It can also be combined with fluclopyridinate, difluorosulfenate, etc. to increase the control effect on broad-leaf grass. Sulfentrazone and its compound products are highly effective against weeds such as wheatgrass, wild oat, brome, pigweed, chickweed, shepherd's purse, etc., but are not effective against bluegrass, alfalfa and pigweed.
Apply pesticide at the 3- to 5-leaf stage of wheat when all the weeds have emerged. Use 4 to 6 grams of 10% water-dispersible granules per mu, mix with water and spray evenly. When the soil is too dry or low temperature, the dosage needs to be increased to 8 grams; for plots with too high organic matter content, the dosage needs to be increased appropriately.
prospect
Sulfentrazone is a sulfonamide systemic and selective post-emergence herbicide for winter wheat fields. It has an extremely broad herbicidal spectrum, high herbicidal activity and fast pharmacological effect. It has good effects on common grass weeds in wheat fields and also has certain control effects on broadleaf weeds. Sulfentrazone has excellent control effect on malignant grass weeds such as multiflora ryegrass, Japanese wheatgrass, hardgrass, and wild oat. At the same time, it also has a certain control effect on green foxtail, Polygonum curly, and broad-leaf weeds such as chickweed, weasel flower, pigweed, and amaranthus retroflexus. It is currently the only acetolactate synthase inhibitor with cross-prevention spectrum and no residue. Moreover, this herbicide has no cross-resistance with clodinafop-propargyl and fenfenprop-propyl. There is a lot of room for compound development in the future and it deserves attention!
