The possibility of increasing Roundup ® activity on striped maple was evaluated by tank mixing 1 qt/ac of Roundup with one of eight adjuvants or other herbicides and comparing each tank mix with Roundup alone. Control of striped maple was evaluated 1 and 2 years after treatment. Two years were required to obtain the full effect of the treatments. Spray distribution in tree crowns was an important factor in determining herbicide effectiveness. Trees 10 to 20 ft tall that received the main air blast of herbicide spray had the highest kill. None of the tank mixes resulted in control that was significantly better than Roundup alone. Tank mixes of Roundup with either Sorbicide Herbicide Adjuvant or 2,4-D significantly reduced control of striped maple. Thus, using both spray equipment that adequately covers tree crowns from the ground to a height of about 20 ft and compatible adjuvants are important for successful control of striped maple in Allegheny hardwood stands. North. J. Appl. For. 7(1):19-22, March 1990.
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 Northern Journal of Applied Forestry covers northeastern, midwestern, and boreal forests in the United States and Canada.