![]() ![]() ![]() Using a herbicide wick bar or wick tool is another way of applying nonselective herbicides in a controlled manner to minimize or eliminate application to non-target species. The herbicide applicator must be extremely careful not to contact non-target species with Roundup since this herbicide is nonselective and will kill most photosynthetically active plants when applied in July or August. Roundup can be applied to cut stumps either with a low pressure hand-held sprayer or else by wiping it on the stump with a sponge applicator (similar to paint applicators). While the Roundup label recommends a 50- to 100-percent concentration of Roundup for stump treatment, a 10- to 20-percent concentration has proven effective. Spot-treating cut stumps with Roundup (a formulation of glyphosate) will minimize resprouting. Stems should be cut with an axe, lopper or harp blade in July or shortly after flowering. It should not be eliminated totally from communities where it is a natural component, but should be controlled where it has invaded or spread to the detriment of other native vegetation. In general, sumac should be left in ravines and draws within prairie communities. ![]() Managers first must decide what part of the population should be removed. ![]()
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