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Plant Diseases/Peach Leaf Curl

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Question
What are the ramifications of applying dormant spray after the buds have opened? Is the fruit compromised or the pollinators killed?

Answer
Chris:
Since the Taphrina fungus can overwinter on bud scales, waiting until after the buds open can cause a reduction in the effectiveness of the fungicide.  Leaf infection can occur as the buds are opening and leaves begin emerging if no protection is present at that time.  The ideal time is just before opening.  I am not aware of any adverse effect to the fruit or insects by the fungicide application after bud opening.

Regards

Steve

Plant Diseases

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Dr Stephen Vann

Expertise

Plant Diseases and Disorders of Lawn Grasses, Trees, Vegetables,and Ornamentals

Experience

Plant Diseases Identification and Management

Education/Credentials
B.S. Botany --- Miss. State Univ. M.S. Plant Pathology --- Miss. State Univ. Ph.D. Plant Pathology --- Texas A & M Univ.

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