Chemicalssyngentaamistar-top

Amistar Top

Syngenta · Azoxystrobin · EPA Reg 100-1313 · Fungicide ✓ Last verified 2026-05-30

Key facts From the EPA

Registration, signal word, restricted-use status and approved use sites are sourced from the U.S. EPA pesticide registry. EPA Reg. No. 100-1313. View this product's label on the EPA ↗ (EPA copy accepted December 16, 2019)

Active ingredient Azoxystrobin
Manufacturer Syngenta
EPA registration 100-1313
Category Fungicide
Application method Suspension Concentrate
Safety & handling WARNING; H302: Harmful if swallowed; H332: Harmful if inhaled; H317: May cause allergic skin reaction; H373: May cause damage to organs through prolonged/repeated exposure

According to the label From the product label

These application details were read from this product's label by our system to help you in the field. The label is the law — always confirm rates, sites and restrictions against the actual product label before mixing or applying. View the full label →

Quadris Top is a broad-spectrum fungicide designed for the control of many important plant diseases, specifically targeting leaf spots and powdery mildew. It is a suspension concentrate (SC) formulation containing two active ingredients: Azoxystrobin (18.2%) and Difenoconazole (11.4%). This product provides preventative, systemic, and curative properties. It is applied as a foliar spray and can be used in block, alternating, or tank-mix applications, though specific instructions must be followed for each. When handling, be aware that this product is extremely phytotoxic to certain apple varieties; avoid spraying apple trees or apple fruit. It is also highly toxic to fish, mammals, and aquatic invertebrates, and can be persistent in the environment. To prevent environmental impact, do not apply directly to water or areas where surface water is present. For safe application, technicians must wear long-sleeved shirts, long pants, shoes plus socks, and waterproof gloves. If the product is accidentally inhaled, swallowed, or comes into contact with skin or eyes, follow the specific First Aid instructions provided, which include calling a poison control center or doctor immediately. Always manage spray drift by avoiding windy conditions and high temperatures to protect non-target areas and prevent crop damage.

Application rates & sites 1

Target pestIndoor / OutdoorWhere on site RateDilutionInfestation levelNotes
leaf spots and powdery mildew Outdoor foliar Extremely phytotoxic to certain apple varieties; avoid spraying apple trees or apple fruit.

Mixing & dilution 1

ForWhereAmountPerFinished strengthNotes
suspension concentrate (SC) Prepare no more spray mixture than is required for immediate operation. Agitate spray solution before and during application.
Re-entry interval (REI) 12
PPE required Long-sleeved shirt and long pants, shoes plus socks, and waterproof gloves.

Timing & weather

Use restrictions 1

Documents

Previous versions (1)

Superseded: superseded (label_prev)

Label SDS
Active ingredient Azoxystrobin
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Label text

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Reference only. Always read and follow the most current EPA-approved label on the product container. State and local restrictions may apply that are not reflected in this digitised copy. Verify the EPA registration number and revision date before use.