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Herbicide Damage

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Authors: Aaron Bergdahl and Joseph Zeleznik

Symptoms

• Abnormal growth, necrosis, blistering and discoloration occurs in plant tissues.

Figure 1. Leaf cupping on hybrid elm from growth regulator herbicides, similar to damage on apple leaves.
Photo Credit:
Aaron Bergdahl, ND Forest Service
Figure 1 – Leaf cupping of hybrid elm due to exposure to growth regulator-type herbicides. Damage would be similar on apple leaves.
Figure 2 – Strapping and distortion of apples leaves due to exposure to growth regulator-type herbicides
Photo Credit:
Joseph Zeleznik, NDSU
Figure 2 – Strapping and distortion of apples leaves due to exposure to growth regulator-type herbicides

Management and other important facts

• Always read and follow the product label when applying herbicides.
• Avoid applying herbicides during windy conditions to prevent herbicide drift.
• Avoid applying broadleaf herbicides on warm days.
• The use of farm-grade chemicals for broadleaf weed control on lawns has killed even mature trees.

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This website was supported by the U.S. Department of Agriculture’s (USDA) Agricultural Marketing Service through grant 14-SCBGP-ND-0038.
Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the USDA.