Asulam is primarily used as a selective herbicide in agriculture and forestry. It controls a wide range of broadleaf weeds and bracken ferns, making it valuable in crop protection and land management. It is commonly applied in forestry areas and non-crop lands where selective weed control is needed without harming grasses and certain woody plants. Asulam works by inhibiting plant cell division, specifically targeting the growth of susceptible weed species. Its systemic action allows it to be absorbed through leaves and translocated to the roots, providing effective control over persistent weeds like bracken. Due to its selectivity and mode of action, it is also used in integrated weed management programs, especially in areas where mechanical control is difficult.