Omega 500F

Syngenta · EPA Reg 71512-1-100 · Fungicide Document last checked 2026-05-30

About this product

Active ingredient Pending extraction

Manufacturer Syngenta

Category Fungicide

Full details for Omega 500F

Source product label ↗ Open the catalog source label while the local copy is reviewed. Verify the product name, EPA registration number, and revision before use. Source safety data sheet ↗ Open the catalog source SDS while the local copy is reviewed. Verify the exact product and revision before relying on it. EPA registration data Reg. 71512-1-100 — registry reference, signal word and status.

Applicator discussion

Nothing here is label direction — the label is the law. These are notes from other applicators, moderated before they appear. Check the labeling accompanying the product and applicable state requirements.

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According to the label From the product label

These details were extracted from this product's label PDF. The label is the law. Confirm every rate, site, restriction and safety requirement against the label before mixing or applying. Check for a state supplemental label; a product may be restricted or prohibited in a state or site even when a rate appears below. · EPA registration data for Reg. 71512-1-100 →

Omega Top MP is an agricultural fungicide used for the control of various plant diseases. Its active ingredient is Fluazinam (40.0%). It is specifically labeled for use on crops such as potatoes to control diseases like Late Blight (Phytophthora infestans) and White Mold (Sclerotinia sclerotiorum). The product can be applied via various methods including sprayer, center pivot, motorized lateral move, traveling gun, solid set, or portable irrigation equipment. It can be used in dilute or concentrate sprays. For aerial applications, specific instructions apply. When using closed systems, handlers must have appropriate PPE available for emergencies. The product is a Group 29 fungicide. Handling requires significant personal protective equipment, including chemical-resistant clothing, gloves, and eye protection. Users should be aware of environmental hazards, particularly regarding aquatic invertebrates, and should avoid application near water bodies or in windy conditions that may cause drift.

Pests covered (2)

Late Blight (Phytophthora infestans)White Mold (Sclerotinia sclerotiorum)

Areas treatable (1)

Potato

How to treat each type of area 2

Potato

Target pest	Location	Rate	Unit	Label notes
Late Blight (Phytophthora infestans)	Outdoor	5.5 fl. oz.	per acre	Begin application when plants are 6 to 8 inches tall or when conditions favor disease development. Repeat applications at intervals of 7 to 10 days.
White Mold (Sclerotinia sclerotiorum)	Outdoor	5.5 to 8	fl. oz. per acre	When mold pressure is low, use 5 to 1/2 fluid ounces. When conditions favor moderate to high white mold pressure, increase the rate to 8 fluid ounces.

Mixing instructions 1

For pests	Label notes
General	Can be used in dilute or concentrate sprays. For aerial applications, use 5 to 10 gallons of water per acre.

Worker safety

Re-entry interval (REI) 17 hours

PPE required Coversalls worn over long-sleeved shirt and long pants; Socks and chemical-resistant footwear; Chemical-resistant gloves made of any waterproof material such as polyethylene or polyvinyl chloride; Protective eyewear.

Timing & weather

Apply when conditions favor disease development.
Do not apply when weather conditions favor drift to treated areas.

Use restrictions 4

Do not apply within 14 days of harvest.
Do not apply within 150 feet of marine/estuarine areas.
Do not apply via sprinkler irrigation systems connected to a public water system.
In New York, do not apply via aerial application within 150 feet of marine/estuarine areas.