Bigleaf maple (Acer macrophyllum) clumps were controlled using the herbicides glyphosate, imazapyr, metsulfuron methyl, triclopyr amine, triclopyr ester, and 2,4-DP + 2,4-D; by basal spray, thinline, foliage spray, and on cut surfaces; during early foliar, late foliar, and dormant periods on five sites across western Oregon and Washington. Three timings of manual cutting alone also were compared. Imazapyr foliage sprays, triclopyr ester thinline, dormant 3% triclopyr ester basal spray, late-foliar 2, 4-DP + 2,4-D basal spray, and manual cutting with triclopyr amine cut-surface application provided the best control among the treatments tested over the 3 yr of study. Imazapyr foliage sprays provided the best long-term control by killing most treated clumps. Triclopyr ester thinline treatments provided the most consistent and effective results among the basal applications. Stump applications of triclopyr amine were more effective than manual cutting alone or manual cutting with glyphosate cut-surface application. West. J. Appl. For. 9(4):118-124.
Document Type: Journal Article
Sault College of Applied Arts and Technology, 443 Northern Ave., Sault Ste. Marie, Ontario, Canada P6A 5L3
Publication date: October 1, 1994
More about this publication?
Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Western Journal of Applied Forestry covers the western United States, including Alaska, and western Canada; WJAF will also consider manuscripts reporting research in northern Mexico that has potential application in the southwestern United States.