Rallis Clasto Insecticide (Pyrifluquinazon 20% WG) - The Ultimate Whitefly & Virus Stopper
Stop Resistant Whiteflies and Protect Your Cotton & Chilli from Leaf Curl Virus.
Clasto Insecticide by Rallis India (a Tata Enterprise) is a premium, next-generation solution designed specifically for farmers struggling with sucking pests that no longer die with ordinary sprays. Powered by the novel Japanese chemistry Pyrifluquinazon, Clasto doesn't just kill pests—it immediately stops them from feeding, saving your crop from devastating viral diseases like CLCuV and Chilli Leaf Curl.
Best For: Breaking resistance in Cotton, Chilli, and Vegetables against Whitefly, Aphids, and Jassids.
Why Choose This Product? Key Benefits
-
⏱️
Stops Feeding Instantly: Unlike older poisons, Clasto paralyzes the pest's mouth immediately. They stop damaging your plant within minutes of spraying.
-
🛡️
Blocks Viral Diseases: By stopping the "bite," it prevents Whiteflies from injecting the deadly Leaf Curl Virus into your Cotton and Chilli crops.
-
⏳
Long-Lasting Protection: One spray provides extended control for 14 to 21 days, reducing the need for frequent spraying.
-
🌧️
Deep Leaf Penetration: It has excellent "Translaminar" action. It enters the leaf and reaches the undersides where pests hide, making it rainfast and hard to wash off.
-
🌿
Safe for Friendly Insects: It is safe for beneficial insects (like mites and wasps), making it perfect for Integrated Pest Management (IPM) farming.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Clasto (Rallis India / Tata) |
| Technical Name | Pyrifluquinazon 20% WG |
| IRAC MoA Code | Group 9B (Novel Chemistry) |
| Chemical Group | Quinazolinone |
| Formulation | WG (Water Dispersible Granules) |
| Toxicity Label | Blue Triangle (Moderately Toxic) |
How It Works: Mode of Action
Clasto works on the insect's "Sense of Balance" (Chordotonal Organs). It does not rely on simple paralysis; it creates a "Stop, Drop, and Starve" effect.
- The "STOP" Effect: Immediately upon contact, the pest's mouthpart is paralyzed. It cannot suck sap or transmit viruses.
- Loss of Coordination: The insect feels dizzy and disoriented. It cannot fly or hold onto the leaf surface.
- Starvation: Unable to eat, the pest dies of starvation within 1-3 days. (Note: You may see the pest on the leaf, but it is harmless/dead).
This unique action makes it effective even against pests that have developed resistance to Imidacloprid or Acetamiprid.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Cotton | Resistant Whitefly (Bemisia tabaci), Aphids, Jassids |
| Chilli & Tomato | Whitefly (Leaf Curl Vector), Aphids, Thrips (Suppression) |
| Okra & Brinjal | Jassids, Whitefly |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (g / Acre) | Water (L / Acre) | Dose (g / Litre) | PHI (Days) |
|---|---|---|---|---|
| Cotton | 200 g | 200 L | 1 g | 21 Days |
| Chilli | 200 g | 200 L | 1 g | 14-21 Days |
| Vegetables | 200 g | 200 L | 1 g | 7-10 Days |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. Note: Product is granular, so dosage is in Grams (g).
How to Apply: Best Practices
- Timing: Spray at the very first sign of Whitefly (ETL 6-8 adults/leaf) or when leaves start curling. Best sprayed in the evening.
- Mixing: Premix the granules in a small bucket of water first, then add to the main tank. It disperses easily (no dust).
- Coverage: Use a Hollow Cone Nozzle. Ensure the underside of the leaves is covered, as that is where whiteflies hide.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Avoid spraying if bees are actively foraging.
Frequently Asked Questions
1. Is Clasto effective against Whiteflies that don't die with Imidacloprid?
Yes. Clasto uses a novel Mode of Action (Group 9B) that works specifically on pests resistant to older chemicals like Imidacloprid and Acetamiprid.
2. Can I mix Clasto with fungicides?
Yes, Clasto is compatible with most neutral insecticides and fungicides. However, do NOT mix it with alkaline products like Bordeaux mixture.
3. Does it kill the pest immediately?
It stops them from feeding immediately (saving your crop), but the pest may remain visible on the leaf for 1-3 days before dying of starvation.
4. What is the dose for a 15-liter spray pump?
The recommended dose is 1 gram per liter. For a 15-liter knapsack sprayer, use 15 grams of Clasto.
5. Why is it more expensive than other poisons?
Clasto is a "Rescue Chemistry." It is a premium product designed to save high-value crops when cheaper alternatives fail. It protects yields worth lakhs, offering a high return on investment.
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. Clasto is moderately toxic to aquatic life; do not wash spray equipment in ponds.
