Flumetralin is primarily used as a plant growth regulator in agriculture. It helps control the height of crops by inhibiting excessive stem elongation, which improves mechanical harvesting and reduces lodging in plants such as peanuts and soybeans. It is commonly applied pre-emergence or early post-emergence to manage vegetative growth without significantly affecting root development. Its growth-regulating properties make it useful in producing more compact and sturdier plants, enhancing yield and crop uniformity. Flumetralin is especially valued in peanut cultivation, where it promotes better pod set and easier harvest operations.