Chemical Control of Mesquite, Creosote Bush, and Catclaw Mimosa with Tebuthiuron and Subsequent Grass Production

Abstract

Mortality of mesquite, catclaw mimosa and creosotebush treated with 1.5 lbs. ailac of tebuthiuron in April of 1984, and resulting grass production was determined on a draw site and a gravelly site in south Brewster County, Texas. Brush mortality 3 years post-treatment on the draw site was 10% for mesquite, 55% for creosotebush (Larrea tridentata DC.) and 75% for catclaw mimosa (Mimosa biuncifera Benth.], Mortality on the gravelly site was 0% for mesquite (Prosopis glandulosa Torr.), 94% for creosotebush and 1000/0for catclaw mimosa. Grass production was increased more on the gravelly site (960 lbs/ac on the treated area vs. 161 lbslac on the untreated) than on the draw site (509 Ibslac on the treated area vs. 133 lbs/ac on the untreated control). Forb production was decreased on both treated sites. The lesser degree of grass response on the draw site was attributed to lack of mesquite control on that site.