Trifloxysulfuron is a sulfonylurea herbicide that can be absorbed by the roots, stems, and leaves of weeds after application. It is translocated both upward and downward within the plant, inhibiting the activity of acetolactate synthase (ALS), thereby disrupting the biosynthesis of branched-chain amino acids (e.g., leucine, isoleucine, valine, etc.). Affected plants exhibit symptoms such as necrosis of growing points, chlorosis of leaf veins, severe growth inhibition, stunting, and eventual death. The selectivity of trifloxysulfuron between weeds and crops is primarily due to differences in metabolic degradation. In crops such as cotton and sugarcane, it is rapidly metabolized into non-active compounds, thereby protecting the plants from herbicidal damage.
The herbicide Haloxyfop-P-Methyl is quickly absorbed by the leaves of grass weeds after application and is transported throughout the entire plant, inhibiting the growth of the plant's meristematic tissue, which ultimately kills the weeds. It has a long residual effect and provides excellent control of annual and perennial grass weeds from seedling emergence to the early stages of tillering and heading. Under normal usage conditions, it is highly safe for various broadleaf crops. It also demonstrates excellent weed control efficacy under low-temperature and drought conditions.