Azimsulfuron is a selective sulfonylurea herbicide primarily used in rice crops to control broadleaf weeds, sedges, and certain grasses. It inhibits the enzyme acetolactate synthase (ALS), essential for branched-chain amino acid synthesis in plants, leading to halted cell division and plant death.

Applied pre- or post-emergence, it provides effective weed control with good soil residual activity, suitable for integrated weed management in paddy fields. Its systemic action enables uptake through roots and foliage, allowing translocation within the plant for control of submerged or emerged weeds.

Azimsulfuron degrades relatively quickly in soil under aerobic conditions, minimizing environmental accumulation and supporting sustainable weed control practices.