Injury to Landscape and Vegetable Plants by Volatile Turf Herbicides

in HortTechnology
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  • 1 Fort Lauderdale Research and Education Center, University of Florida, 3205 College Ave., Fort Lauderdale, FL 33314.

Phenoxy and related herbicides used in turfgrass have the potential for volatilization and movement from treated areas. Three studies assessed potential injury to subtropical landscape plants caused by volatile turf herbicides in polyethylene enclosures. Phenoxy herbicide mixtures were emphasized. There were significant differences among the seven landscape species tested. The most sensitive species were african marigold (Tagetes erecta), joseph's coat (Alternanthera ficoidea), and tomato (Lycopersicon esculentum). Severe injury was caused by exposure to herbicides containing 2,4-D isooctyl ester and MCPA isooctyl ester. Exposure to individual active ingredients 2,4-D dimethylamine, dicamba acid, atrazine, and metsulfuron resulted in no injury to the species tested.

Contributor Notes

corresponding author; e-mail turf@ufl.edu.
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