Plenaris 200FS

Syngenta · EPA Reg 100-1590 · Fungicide ✓ Last verified 2026-05-30

Free practice questions on this product's label, use, and safety.

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. 100-1590. View this product's label on the EPA ↗ (EPA copy accepted October 29, 2024)

Active ingredient Pending extraction

Manufacturer Syngenta

EPA registration 100-1590

Category Fungicide

Application method Seed Treatment

Target pests Downy Mildew

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 →

Plenaris 200FS is a fungicide seed treatment product designed for early season protection in sunflowers. It contains the active ingredient oxathiapiprolin at a concentration of 18.7% by weight. This product is formulated as a flowable suspension and is specifically used to control Oomycete pathogens, most notably downy mildew caused by Plasmopara halstedii. It is intended for use by commercial seed treaters using standard, calibrated equipment such as hopper-boxes, planter-boxes, or slurry bars. The product works by inhibiting an oxysterol-binding protein (OSBP) modulator. When applying, ensure that an EPA-approved colorant is added to the seeds to provide a visual indicator of treatment. Users should be aware that this product is toxic to aquatic invertebrates and must not be applied directly to water or areas where surface water is present or imminent. For handling, technicians must wear long-sleeved shirts, long pants, shoes, and socks. If pesticide gets inside clothing, it must be removed immediately and the clothing washed thoroughly. Always follow manufacturer's instructions for cleaning and maintaining application equipment to prevent cross-contamination.

Application rates & sites 1

Target pest	Indoor / Outdoor	Where on site	Rate	Dilution	Infestation level	Notes
downy mildew (Plasmopara halstedii)	Outdoor	sunflower seeds	0.015 to 0.0299 fl oz/100 lb seed		early season protection	Use higher rate in areas with a history of high disease pressure or where early season protection is required.

Mixing & dilution 1

For	Where	Amount	Per	Finished strength	Notes
downy mildew (Plasmopara halstedii)		0.0094 to 0.0188	mg/ai/seed		Can be applied as a water-based slurry with other registered seed treatment products including fungicides, nematicides, or micronutrients. Check compatibility before mixing.

PPE required Long sleeved shirt, long pants, shoes and socks.

Timing & weather

early season protection

Use restrictions 3

Do not use treated seed for food or animal feed, mix with food or animal feed, or process for oil.
Do not use on agricultural establishments in hopper-box, planter-box, slurry box or other seed treatment applications at time of planting.
All other crops cannot be planted until 180 days after the planting of PLENARIS 200FS-treated seeds.

Documents

📄 Label 📋 SDS

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Label SDS

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Versions 2026-05-30 2026-05-30 2026-05-27 · default 2026-05-27

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.