Control of Aspen and Prickly Rose in Recently Developed Pastures in Saskatchewan

Abstract

Two consecutive yearly applications of 2,4-D and 2,4-D plus 2,4,5-T (2:1) at 2 lb/acre gave good control of aspen (Populus tremuloides Michx.) for 5 years in Saskatchewan. There was virtually no regeneration of new shoots from parental root stocks by the third year after the initial treatment. Control of prickly rose (Rosa acicularis Lindl.) was erratic with 2,4-D plus 2,4,5-T at 2 lb/acre, but the mixture was needed when both woody plants were present.