Keefun Insecticide (Tolfenpyrad 15% EC): The Ultimate Solution for DBM & Thrips
Stop resistant pests instantly with PI Industries' "One Shot Solution" for sucking pests and caterpillars.
Farmers today face a tough battle against pests that no longer die with older sprays. Keefun Insecticide is a premium, broad-spectrum solution designed to handle these tough challenges. Powered by the active ingredient Tolfenpyrad, it works differently than other poisons, attacking the pest's energy system directly.
Keefun is highly effective against the Diamondback Moth (DBM) in cabbage and the sucking pest complex (Thrips, Aphids, Jassids) in Chilli, Cotton, and Vegetables. Plus, it offers a bonus benefit: it helps control certain fungal diseases like Powdery Mildew, saving you the cost of an extra fungicide spray.
Why Choose This Product? Key Benefits
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Immediate "Stop-Feed" Action: Pests stop eating your crop immediately after contact, preventing further damage even before they die.
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Dual Action Power: It kills insects AND suppresses fungal diseases like Powdery Mildew and Anthracnose.
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Complete Life Cycle Control: It is an effective Ovicidal. It kills eggs, larvae, and adult pests, breaking the reproduction cycle.
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Reliable Rainfastness: The product sticks effectively and requires a rain-free window of just 6 hours for full absorption.
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Breaks Resistance: Ideal for pests that have developed resistance to organophosphates and older chemistries.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Keefun (PI Industries) |
| Technical Name | Tolfenpyrad 15% EC |
| IRAC MoA Code | Group 21A (METI) |
| Chemical Group | Pyrazole |
| Formulation | Emulsifiable Concentrate (EC) |
| Toxicity Label | Yellow Triangle (Highly Toxic) |
How It Works: Mode of Action
Keefun works by shutting down the pest's internal power plant. It is a Mitochondrial Electron Transport Inhibitor (METI).
[Image of mitochondrial electron transport chain inhibition mechanism]- Entry: The chemical penetrates the insect's outer layer (cuticle) or is ingested while feeding.
- Energy Block: It binds to Complex I in the mitochondria, blocking the production of ATP (the insect's energy fuel).
- Paralysis & Death: Without energy, the insect becomes paralyzed, stops feeding instantly ("Functional Death"), and dies from energy starvation.
Note: This mechanism is different from nerve poisons, making it excellent for killing resistant pests.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Cabbage | Diamondback Moth (DBM), Aphids |
| Chilli, Onion, Garlic | Thrips, Aphids, Mites |
| Cotton, Okra, Mango, Cumin | Jassids, Whiteflies, Hoppers, Aphids |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Do not under-dose.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Cabbage | 400 ml | 200 L | 2 ml | 5 Days |
| Chilli & Onion | 400 ml | 200 L | 2 ml | 7 Days |
| Cotton | 400 ml | 200 L | 2 ml | 26 Days |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting to ensure food safety.
How to Apply: Best Practices
- Timing: Apply at the first sign of pest infestation (ETL level). Spray in the evening to avoid harming honeybees.
- Mixing: Use high water volume (200 Liters per acre) for best results. Keefun works by contact, so coverage is key.
- Coverage: Use a Hollow Cone nozzle to create a fine mist that reaches the undersides of leaves where Thrips and Whiteflies hide.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. This product is toxic to fish—do not use near ponds.
Frequently Asked Questions
1. Does Keefun kill pest eggs?
Yes, it has strong Ovicidal action, meaning it kills the eggs of pests like Diamondback Moth, preventing the next generation from hatching.
2. Can I mix Keefun with fungicides?
Yes, it is generally compatible with most fungicides. However, avoid mixing it with highly alkaline products like Bordeaux mixture.
3. What is the approximate cost per acre?
Using the recommended dose of 400ml/acre, the cost is approximately ₹900 - ₹1,000 per acre, making it a cost-effective choice for high-value crops.
4. Is it safe for honeybees?
Tolfenpyrad is toxic to bees. You must avoid spraying during active foraging hours (morning/afternoon). Spray only in the late evening.
5. What is the shelf life of the product?
When stored in a cool, dry place away from direct sunlight, the shelf life is 2 years (24 months) from the date of manufacture.
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. This product carries a Yellow Triangle (Highly Toxic) warning; handle with extreme care.
