Comparison of Chemical Site Preparation Treatments in the Georgia Piedmont

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Abstract
Chemical site preparation treatments were compared against each other and against mechanical treatments in a randomized complete block design. Two studies were conducted with spring (June) and late summer (September) treatment dates. Efficacy was measured 2 years after treatment as percent control on individually identified stems and as percent change per acre from subplot data. Combinations of Tordon K®, Tordon 101® mixture, Garlon 4®, Galon 3A®, Velpar L®, and Roundup® herbicides were tested.* For the spring study, combinations of Tordon + Garlon 4 herbicides effectively controlled red maple, dogwood, and red oaks. Tordon 101 + Garlon 4 was the most effective treatment on water/willow oaks. Among the treatment on sweetgum. Velpar L was the most effective treatment on water/willow oaks. Among the late summer applied treatments, Roundup provided the best overall control of the hardwood species examined. A shear, rake, and disk treatment provided comparable control to chemical treatments in the spring study, but at a higher cost. Double chopping was not an effective treatment in the late summer study. South. J. Appl. For. 14(1):24-32.

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