Quadris Opti

According to the label From the product label

Quadris Opti is a broad-spectrum, preventative fungicide used for the control of plant diseases on potatoes, tomatoes, and vegetables. It contains two active ingredients: azoxystrobin (4.6%) and chlorothalonil (48.0%). It is formulated as a suspension concentrate (SC). This product is highly effective for preventative disease management but should be integrated into an overall IPM strategy. Note that Quadris Opti is extremely phototoxic to certain apple varieties; avoid using equipment previously used on apple trees. When applying, ensure adequate coverage and canopy penetration. For ground applications, use sufficient water volume; for aerial applications, use a minimum of five gallons of water per acre. Users must follow all Worker Protection Standard (WPS) requirements, including specific PPE and restricted-entry intervals. The product is toxic to freshwater and estuarine/marine fish and aquatic invertebrates. Always prevent drift toward non-target aquatic habitats or sensitive areas.

Application instructions from the label 1

Mixing instructions 1

Worker safety

Timing & weather

• Avoid spray drift. Extreme care must be used to prevent injury to apple trees. Avoid application when weather conditions favor drift toward non-target aquatic habitats.

Use restrictions 3

• Do not use for disease control in greenhouses.
• Extremely phototoxic to certain apple varieties; do not use equipment previously used to spray apple trees.
• Do not apply directly to water or to areas where surface water is present or to intertidal areas below the mean high water mark.