2,4-D Injury on Grape
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2,4-D (2,4 dichlorophenoxyacetic acid) herbicide injury symptoms include leaf twisting, malformation, and curling. Injury results when grapevines are exposed to the herbicide by spray drift, volatilization, or sprayer contamination. Grapes are extremely sensitive to 2,4-D, especially ester formulations.
Leaf distortion caused by 2, 4-D herbicide.
(Photo: John Strang, University of Kentucky)
Management:
- Avoid using 2,4-D in or near vineyards.
- Communicate with vineyard neighbors to request their cooperation when they are applying 2,4-D.
