Brush Control on Forest-Rangelands in East Texas

Abstract

Herbicides were applied by a truck-mounted sprayer and airplane to stands of mixed brush in East Texas. Mixtures of 2,4,5-T + picloram gave the best brush control. Picloram was the best individual chemical but failed to kill white ash (Fraxinus americana L.), saw greenbriar (Smilax bona-nox L.) and redbay (Persea borbonia (L.) Spreng.) Picoloram only partially controlled American holly (Ilex opaca Ait.), blackgum (Nyssa sylvatica Marsh.), flowering dogwood (Cornus florida L.), red maple (Acer rubrum L.), oaks (Quercus spp.), and yaupon (Ilex vomitoria Ait.). Dicamba, isocil, bromacil, and mixtures of 2,4,5-T had intermediate activity. Paraquat and diquat were least effective for killing woody species. Dense grass stands occurred within 2 years after treatment where the brush had been controlled.