Halosulfuron-methyl is a systemic herbicide used to control broadleaf weeds in various crops such as corn, soybeans, sugarcane, and rice. It belongs to the sulfonylurea herbicide group and works by inhibiting the enzyme acetolactate synthase (ALS), which is essential for the biosynthesis of branched-chain amino acids in susceptible weeds.
Without these amino acids, weeds cannot grow and eventually die. Halosulfuron-methyl is valued for its efficacy against tough-to-control weeds, its flexibility in different cropping systems, and its low application rates.
However, proper application techniques and stewardship practices are essential to minimize the risk of crop injury and environmental contamination.