Picloram alone and in combination with 2,4-D was evaluated for the control of aspen poplar (Populus tremuloides Michx.), balsam poplar (Populus balsamifera L.), and prickly rose (Rosa acicularis Lindl.) on rangeland in Saskatchewan which had alfalfa (Medicago sativa L.) as an important grazing component. The addition of picloram at 0.5 lb/acre to 2,4-D amine at 2 lb or less per acre did not improve the control of aspen poplar when compared to the presently recommended treatment in Saskatchewan of 2 lb/acre of 2,4-D ester. However, there was some evidence that the addition of 1 lb/acre of picloram to 2 lb/acre of 2,4-D amine may improve control. Picloram applied at 1 lb/acre alone or in combination with 2 lb/acre of 2,4-D amine provided effective control of balsam poplar. There was excellent control of prickly rose for 4 to 5 years following the application of 0.5 lb/acre of picloram with or without the addition of 2,4-D. The herbicide rates that were necessary for the control of any of the woody species, almost completely removed alfalfa from the rangeland. The significance of alfalfa on rangeland and the potential loss of grazing from using or not using herbicides is discussed. 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.