Product Introduction

Tembotrione is a triketone herbicide with a CAS number of 335104-84-2, a molecular formula of C17H16ClF3O6S, and a molecular weight of 440.82. Cyclosulfonone belongs to the HPPD (p-hydroxyphenylpyruvate dioxidase) inhibitor herbicides. It is mainly used in the middle and late post-emergence stages of corn fields to control grassy and broad-leaved weeds such as horse grass, Setaria viridis, convolvulus vulgaris, and panna cochinensis, and has a significant effect on weeds treated with glyphosate or ALS inhibitors.

Mechanism of action

Cyclosulfonone inhibits the HPPD enzyme in weeds, blocking the metabolic pathway of converting p-hydroxyphenylpyruvate to uromelanoic acid, which leads to the obstruction of the synthesis of plastiquinone and carotenoids. This process causes the weed meristem to lose its green color and turn white, and eventually die within two weeks. It has strong systemic properties and can be absorbed through stems and leaves and conducted throughout the entire plant. It is often combined with the safety agent dibenzoxazole acid to enhance the safety of crops.

Characteristics and Advantages

• Highly efficient and broad-spectrum: Its activity is 2 to 3 times that of mesotrione, and it has a control effect of over 90% on 56 types of weeds, especially showing remarkable results against difficult-to-control weeds such as resistant Mallow and Corynephrum.

• Environmentally friendly: Resistant to rain erosion, with a short half-life (56.3 days in water), no residual pesticide damage to subsequent crops, and meeting the standards of green pesticides.

• High safety: It can be used at the 3-9 leaf stage of corn and supports re-spraying. The acute oral LD50 for rats is greater than 2000 mg/kg, and it is of low toxicity to environmental organisms such as birds and fish.

Summary

Cyclosulfonone, with its unique HPPD inhibition mechanism and outstanding weed control performance, has become a core product for the management of resistant weeds in corn fields. With the expiration of patents, domestic enterprises are accelerating the layout of raw materials and compound preparations (such as the "Badou" series), which are expected to replace traditional herbicides like mesotrione in the future. It is recommended to apply 23.5% cyclosulfonone · atrazine suspension concentrate at 160-200 ml per mu during the 3-5 leaf stage of corn, which takes into account both economy and control efficacy.