Past attempts using herbicides to control larkspur (Delphinium barbeyi), one of the most serious poisonous plant problems to cattle in the Western United States, have been less than satisfactory. Preliminary research reported herein suggests that 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) plus ammonium sulfate placed around the base of the plant or urea and 2,4,5-T sprayed on the plant may give good control of larkspur with a single treatment during any stage of growth. Some results also indicate that nitrogen fertilizer alone may be an effective control for larkspur. 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.