Heritage Fungicide is a systemic strobilurin fungicide formulated for the preventive and curative control of a broad spectrum of fungal diseases in turfgrass and ornamental plants. The active ingredient is azoxystrobin, which is classified under FRAC Group 11, and provides translaminar and acropetal systemic movement within plant tissues.
Product Configuration and Specifications
The product is defined by its active ingredient, formulation type, and commercial packaging. The active ingredient is azoxystrobin. It is formulated as a water-dispersible granule (WDG). The standard commercial unit is a 1-pound bag. These bags are packaged 36 per case, with 648 cases (23,328 bags) comprising a standard pallet.
Functional Mechanism and Design
Azoxystrobin inhibits mitochondrial respiration in fungi by binding to the Qo site of cytochrome b, disrupting electron transport and energy production (ATP synthesis). This mode of action provides both preventative and early curative activity. The fungicide is absorbed by leaves and stems, exhibiting translaminar movement, and is also absorbed by roots with acropetal systemic movement upward through the xylem. This dual movement provides comprehensive plant protection.
Target Applications and Performance
The product is labeled for use on turfgrass and a wide range of ornamental plants. It controls major diseases including dollar spot, brown patch, gray leaf spot, anthracnose, rust, Pythium blight, and snow molds. Performance is characterized by long-lasting residual control and the ability to suppress disease development after infection has begun, provided applications are made in the early stages.
Application Specifications and Protocol
The product is applied as a foliar spray or as a soil drench for ornamental crops.
Standard Application Protocol:
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Mixing: The water-dispersible granules should be added to the spray tank under constant agitation to ensure complete dispersion and suspension.
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Coverage: For foliar applications, thorough coverage is required for optimal absorption and translaminar movement.
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Timing: Apply preventatively at the first sign of disease pressure or according to a scheduled program. For curative use, apply at the earliest symptoms.
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Tank Mixing: It is often tank-mixed with contact fungicides like chlorothalonil to broaden the spectrum of control and provide both systemic and protectant activity, which also aids in resistance management.
Handling and Safety
Azoxystrobin requires careful handling. Applicators should wear appropriate personal protective equipment including long sleeves, long pants, chemical-resistant gloves, and eye protection. Avoid contact with skin, eyes, and clothing. Observe all re-entry intervals specified on the product label. Store in a secure, dry location away from foodstuffs and out of reach of children.
