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herbicide injury, growth regulator injury (phenoxy herbicide) on Sunflower (Helianthus sp.)


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5368835
Paul Bachi
University of Kentucky Research and Education Center

All the younger leaves in the sample showed symptoms of severe growth regulator (i.e. phenoxy herbicides, e.g. 2,4-d) injury; curling, cupping, elongated tips or margins, and scalloped margins.

5368836
Paul Bachi
University of Kentucky Research and Education Center

All the younger leaves in the sample showed symptoms of severe growth regulator (i.e. phenoxy herbicides, e.g. 2,4-d) injury; curling, cupping, elongated tips or margins, and scalloped margins.

5368837
Paul Bachi
University of Kentucky Research and Education Center

All the younger leaves in the sample showed symptoms of severe growth regulator (i.e. phenoxy herbicides, e.g. 2,4-d) injury; curling, cupping, elongated tips or margins, and scalloped margins.