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Injury on White Oak Seedlings from Herbicide Exposure Simulating Drift

Samtani, J. B., Masiunas, J. B., and Applyby, J. E. HortScience 43(7):2076-2080. 2008.

Herbicide drift to landscape and woodland trees is a particular concern in midwestern United States where the topography is relatively flat, large-scale agriculture relies on herbicides, and housing developments and woodlands are intermingled with agricultural fields. Recently, leaf abnormalities (called leaf tatters) have been reported on white oak (Quercus alba L.). We evaluated the effects of field corn herbicides on white oak at the swollen bud, leaf unfolding, and expanded leaf stages. Container-grown white oak seedlings were treated with 1%, 10%, and 25% standard field use rates of2,4-D isooctyl ester, glyphosate, 2,4-D isooctyl ester+ glyphosate, dicamba, acetochlor + atrazine, and metolachlor.


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Author(s): J. B. Samtani, J. B. Masiunas, J. E. Applyby

Section: Pesticides