Herbage Production Following Brush Control with Herbicides in Texas

Abstract

The herbicides, 4-amino-3,5,6-trichloropicolinic acid (picloram), 5-bromo-3-sec-butyl-6-methyluracil (bromacil), (2,4,5-trichlorophenoxy)acetic acid (2,4,5-T), 3,6-dichloro-o-anisic acid (dicamba) applied alone and in certain combinations caused significant increases in grass production for several months to several years at three locations in Texas, depending upon the degree of brush control obtained. Native grasses usually tolerated picloram, 2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine (atrazine), 2-chloro-4,6-bis(ethylamino)-s-triazine (simazine) and (2,4-dichlorophenoxy)acetic acid (2,4-D) as granules and sprays at rates up to 2 lb./acre without reduction in yield on pasturelands at three locations in Texas.