Compatibility Quick Reference for Common Orchard Fungicides (PPFS-FR-T-29)
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Nicole Gauthier, Plant Pathology Extension Specialist Kim Leonberger, Plant Pathology Extension Associate
Introduction
It is common practice to tank mix two or more products for a single application when spraying tree fruit with fungicides. This saves time and reduces input costs. However, compatibility of tank-mix partners is critical for effective disease management. Factors such as water pH and product formulation must be considered. Physical incompatibility results in products clumping in the tank or products failing to remain suspended. Chemical incompatibility, on the other hand, can lead to phytotoxicity or reduced efficacy of products. This quick reference table provides some common incompatibility issues with fungicides and tank-mix partners. However, because the information in this table may be incomplete, it is important to refer to product labels for further details.
NOTE: The above comments and compatibilities are per label recommendations, thus terminology and language may vary from one product to another.
May 2024
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