Application: Imazamox is a member of the imidazolinone class of herbicides. It is registered for post-emergence control of broadleaf weeds and grass in alfalfa, edible legumes and soybeans. It is a systemic herbicide that moves throughout the plant tissue and prevents plants from producing an essential enzyme, acetolactate synthase (ALS). This enzyme is key for the biosynthesis of branched chain amino acids. Susceptible plants will stop growing soon after treatment, but plant death and decomposition will occur over several weeks.