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Herbicide Damage

Authors: Aaron Bergdahl and Joseph Zeleznik

Symptoms

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

Herbicide damage
Figure 1 –
Leaf cupping of hybrid elm due to exposure to growth regulator-type herbicides. Damage would be similar on apple leaves. (Aaron Bergdahl, ND Forest Service)

Herbicide Damage
Figure 2 –
Strapping and distortion of apples leaves due to exposure to growth regulator-type herbicides (Joseph Zeleznik, NDSU)


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.

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.

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