Optra FS Insecticide (Thiamethoxam 30% FS) by Coromandel
The Ultimate Seed Treatment for Early Season Pest Protection and Crop Vigor.
Optra FS is a specialized systemic insecticide designed exclusively for seed treatment. Manufactured by Coromandel International Limited, it provides your crop with a robust "safety shield" right from germination. By treating your seeds with Optra FS, you protect vulnerable seedlings from sucking pests and soil insects for up to 45 days. Beyond protection, it offers a unique "Vigor Effect" (Phytotonic effect), ensuring better root development, uniform germination, and healthier, greener plants even under stress.
Why Choose This Product? Key Benefits
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Long-Lasting Protection: Secures your crop against pests for the critical first 30 to 45 days after sowing.
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Systemic Action: The active ingredient is absorbed by the roots and spreads to the leaves, protecting the entire plant from the inside out.
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Early Plant Vigor: Promotes deeper rooting and stronger shoot growth, helping plants survive drought and heat stress better.
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Excellent Adhesion: Formulated as a Flowable Concentrate (FS) with special stickers that stay on the seed and do not "dust off" during sowing.
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Broad Spectrum Control: Effectively targets aphids, jassids, thrips, whiteflies, shoot flies, and termites in a single shot.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Optra FS (also marketed as Board Plus) |
| Technical Name | Thiamethoxam 30% FS |
| IRAC MoA Code | Group 4A (Neonicotinoids) |
| Chemical Group | Thianicotinyl / Neonicotinoid |
| Formulation | Flowable Concentrate for Seed Treatment (FS) |
| Toxicity Label | Blue Triangle (Moderately Hazardous) |
How It Works: Mode of Action
- Absorption: Upon sowing, the active ingredient is released into the moist soil and rapidly absorbed by the germinating root system.
- Translocation: The medicine travels upwards (systemically) through the xylem to the stem and leaves, creating a toxic barrier within the plant tissue.
- Target Inhibition: When pests try to suck sap or chew the plant, the chemical disrupts their nervous system (nAChRs), leading to paralysis and death.
Note: It acts on the Central Nervous System of insects, causing irreversible blockage of nerve signals.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Cotton | Aphids, Jassids, Whiteflies, Thrips |
| Maize & Sorghum | Shoot Fly, Stem Borer |
| Soybean & Wheat | Stem Fly, Termites |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Kg of Seed" for accurate results.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Cotton | 10 ml / Kg Seed | Slurry Mix | Add 20ml water/kg seed | NA (Seed Treat) |
| Maize & Sorghum | 8 - 10 ml / Kg Seed | Slurry Mix | Add 20ml water/kg seed | NA (Seed Treat) |
| Soybean & Wheat | 3.3 - 10 ml / Kg Seed | Slurry Mix | Add 10ml water/kg seed | NA (Seed Treat) |
*PHI = Pre-Harvest Interval: Not applicable for seed treatments as application is months before harvest. *Water Volume: Use just enough water to coat seeds uniformly (slurry method).
How to Apply: Best Practices
- Timing: Treat the seeds immediately before sowing or keep them dry in a cool place if treated earlier.
- Mixing: Prepare a slurry by mixing the required dose of Optra FS with a small amount of water (approx. 10-20ml water per kg seed). Shake well in a plastic bag or use a seed treating drum for uniform red/blue coating.
- Coverage: Ensure every seed is evenly coated. Do not over-wet the seeds. Dry the treated seeds in the shade.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Never dry treated seeds under direct sunlight.
Frequently Asked Questions
1. Can I use Optra FS as a spray on leaves?
No. Optra FS is a specialized "Flowable Concentrate" designed only for seed treatment. For foliar sprays, use Optra WG (Granules) or liquid formulations meant for spraying.
2. What is the benefit of the "Vigor Effect"?
Thiamethoxam improves the plant's physiology, leading to better root growth and greener leaves. This helps the crop withstand abiotic stress like low water or high heat during the seedling stage.
3. Can I mix Optra FS with fungicides?
Yes, it is compatible with common seed treatment fungicides like Carbendazim or Thiram. This provides a complete package against both insects and diseases.
4. Is this product harmful to honeybees?
Thiamethoxam is toxic to bees. However, seed treatment reduces risk compared to spraying. Avoid dust drift during sowing to protect pollinators.
5. What is the antidote for accidental poisoning?
There is no specific antidote. Treatment is symptomatic and supportive. In case of ingestion, seek medical help immediately.
Safety & Disclaimer
Always read and follow the instructions on the official product label. The information provided here is for guidance only. Use personal protective equipment (PPE) during application.
