Evaluation of Polymerized Herbicides for Brush Control

Abstract

Polymerized and conventional (2,4-dichlorophenoxy)-acetic acid (2,4-D), (2,4,5-trichlorophenoxy)acetic acid (2,4,5-T), 3,6-dichloro-o-anisic acid (dicamba), and 4-amino-3,5,6-trichloro-picolinic acid (picloram) were applied alone and in certain combinations to several brush species. Generally there were no significant differences in effectiveness between conventional and polymerized herbicides on honey mesquite(Prosopis juliflora(Swartz) DC. var.glandulosa(Torr.) Cockrell), huisache(Acacia farnesianaL. Willd.), Macartney rose(Rosa bracteataWendl.), live oak(Quercus virginianaMill.), whitebrush(Aloysia lycioidesCham.), and winged elm(Ulmus alataMichx.). Conventional granular picloram was more effective on yaupon(Ilex vomitoriaAit.) than polymerized formulations.