Repeated annual applications of 2,4,5-T [(2,4,5-trichlorophenoxy) acetic acid] or silvex [2-(2,4,5-trichlorophenoxy) propionic acid] reduced the density of tall larkspur (Delphinium barbeyi (Huth) Huth) below a level that is potentially dangerous to grazing cattle. Killing tall larkspur and other forbs resulted in a plant community dominated by grasses. The dominant species of grass depended on whether the treated plot was grazed by cattle. Letterman needlegrass (Stipa lettermanii Vasey) dominated on grazed plots and mountain brome (Bromus carinatus Hook. & Arn.) dominated when plots were protected from grazing cattle. Reinvasion of treated areas by tall larkspur and the unpalatable weedy species occurred more rapidly on grazed plots than on ungrazed plots. This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries. The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information. Migrated from OJS platform August 2020
Scholarly peer-reviewed articles published by the Society for Range Management. Access articles on a rolling-window basis from vol. 1, 1948 up to 5 years from the current year. Formerly Journal of Range Management (JRM). More recent content is available by subscription from SRM.