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Ali from San Jose , California writes

Is Propiconazole 14.3 Fungicide recommended for the treatment of powdery mildew, black spot, and fungus on a grapes? What is the recommended mix rate per gallon?


Propiconazole 14.3 Fungicide is not labeled for use on grapes, or on anything grown with intention to be eaten.  You may consider using Eagle 20EW Specialty Fungicide, which does treat certain diseases on grapes, such as black rot and powdery mildew as listed on page 9 of the product label.  You can also contact your local county extension office for advice from agricultural experts on how to treat for diseases on grapes, and then let us know so we can assist in placing your order.

Answer last updated on: 04/29/2021

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