Control of honey mesquite with herbicides: influence of stem number.

Following aerial application of herbicides, stands of honey meaquite (Prosoph #lwuii&sa vu. gwbsa) were evaluated to determine the influence of individual plant stem number on herbicide efficacy. A highly algnifiant (PCO.01) relationship was found between stem number and plant mortality, with berbidde resist8nce increasing dmrply in plants with greatest numbers of stems. This relationship wan consistent among all herbiddcs and plant heights, wbicb suggests that atem number may be usdul in selecting the type of control method employed on spedfic sites.