Sulfonylureas exhibit a wide range in crop and weed sensitivities. Plant-back restrictions that vary with region and crop species. Lack of herbicide rotation or tank-mixing can encourage resistant weeds. Plant injury symptoms. Affected plants exhibit chlorosis, necrosis, stunting, epinasty and shortening of internodes.
Sulfonylureas kill germinating seedlings.
They also exhibit foliar activity. Herbicide symptoms develop slowly. Some deformation of new growth can occur. Imidazolinones Key performance features. The aromatic amino acid inhibitors Pursuit and Assert are applied pre-emergence or postemergence.