Chemical Control of Wild Allium Species1
- W. S. Hardcastle2
Wild Allium sp. often occur in pastures, lawns, and small grain fields in the Southeastern U.S. They are on the noxious weeds lists of several states in this area. Commonly two or more applications of 2,4-D [(2,4-dichlorophenoxy) acetic acid] per year for up to 3 years are the current recommendepdr actice for their control. Single applications of glyphosate [N-(phosphonomethyl) glycine] and 2,4-D were made in February or April on wild garlic (Allium vineale L.) and wild onion (Allium canadense L.) growing in fields in the Piedmont and Limestone Valley regions of Georgia. Scape counts, 6 and 14 weeks after treatment, indicated that excellent control was obtained from treatments of 4.48 and 6.72 kg/ha glyphosate especially when a surfactant was used. The 2.24 kg/ha treatment rate usually equalled or surpassed the 2,4-D treatments in control.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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