Several pictures and samples have been coming into the PIDC showing plants with curling of leaves and tips of growing points. Most of the samples have been tomato plants, but we’ve also seen symptoms on squash, bean, and trees. This kind of injury can be caused by exposure to growth regulator herbicides, such as 2,4-D and dicamba. Growth regulator herbicides are commonly used to control weeds in lawns and landscape areas.
Herbicide drift injury on tomato. Photo by: Jenny Pollard
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