Kristar-Gold Insecticide (Novaluron 5.25% + Emamectin Benzoate 0.9% SC)
The Ultimate "Double-Action" Solution for Resistant Caterpillars and Borers.
Kristar-Gold by Krishi Rasayan is a premium suspension concentrate (SC) insecticide designed to fight the toughest crop pests. It combines two powerful technologies: an Insect Growth Regulator (IGR) and a fast-acting Neurotoxin. This "binary" formula ensures that pests stop feeding immediately while preventing future generations from hatching.
⚠️ Important: Ensure you buy the Agricultural Insecticide (Novaluron + Emamectin) version. Do not confuse this with the wood preservative sold under a similar brand name.
Why Choose This Product? Key Benefits
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Rapid Knockdown: Pests stop feeding within hours due to the paralysis effect of Emamectin Benzoate.
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Long-Lasting Protection: Novaluron remains active on the leaf surface, protecting your crop for 14 to 21 days.
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Total Lifecycle Control: Kills active larvae (caterpillars) and sterilizes eggs so they never hatch.
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Excellent Rainfastness: Absorbs into the leaf within 2-3 hours, making it resistant to wash-off from rain.
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Crop Safety: The water-based SC formulation is gentle on tender leaves and reduces the risk of burning (phytotoxicity).
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Kristar-Gold |
| Technical Name | Novaluron 5.25% + Emamectin Benzoate 0.9% SC |
| IRAC MoA Code | Group 15 (IGR) + Group 6 (Neurotoxin) |
| Chemical Group | Benzoylurea + Avermectin |
| Formulation | Suspension Concentrate (SC) |
| Toxicity Label | Blue (Moderately Toxic) or Yellow (Highly Toxic) |
How It Works: Mode of Action
Kristar-Gold attacks the pest from two different angles to prevent resistance:
- Nerve Attack (Emamectin): It penetrates the leaf tissues (translaminar action). When larvae feed, it locks their nerve channels open, causing paralysis. The pest stops damaging the crop immediately.
- Growth Inhibition (Novaluron): It prevents the formation of Chitin (insect skin). If a larva tries to molt (shed skin), it dies.
- Ovicidal Action: It sterilizes adult female moths and prevents laid eggs from hatching, breaking the population cycle.
Result: Instant stop to damage + long-term population control.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Cabbage & Cauliflower | Diamondback Moth (DBM), Tobacco Caterpillar |
| Chilli & Red Gram | Fruit Borer (Helicoverpa), Pod Borer, Spodoptera |
| Rice (Paddy) | Stem Borer, Leaf Folder |
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 (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Vegetables (Cabbage, Chilli) | 350 - 400 ml | 150 - 200 L | 2 - 2.5 ml | 5 - 7 |
| Pulses (Red Gram) | 350 - 400 ml | 200 L | 2 ml | 14 |
| Rice (Paddy) | 600 ml | 200 L | 3 ml | 14 |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
- Timing: Spray in the late afternoon or evening. Emamectin is sensitive to sunlight (UV), so evening sprays allow the chemical to work overnight.
- Mixing: SHAKE THE BOTTLE VIGOROUSLY before use. SC formulations can settle; shaking ensures the medicine is mixed evenly.
- Coverage: Use a "Hollow Cone" nozzle for vegetables and cotton to ensure fine mist covers both the top and bottom of the leaves.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Do not use near fish ponds.
Frequently Asked Questions
1. Does Kristar-Gold kill eggs?
Yes. The Novaluron component has strong ovicidal action, meaning it kills eggs or prevents them from hatching, stopping the next generation of pests.
2. Is this safe for fish?
No. Emamectin Benzoate is highly toxic to fish and aquatic life. Do not spray in paddy fields where fish farming is practiced.
3. How long does it take to see results?
Pests stop feeding within a few hours (paralysis). Complete death usually occurs within 2-4 days.
4. Can I use this on wood termites?
No. There is another product called "Kristar" which is a wood preservative (Chlorpyriphos). This specific product (Novaluron + Emamectin) is strictly for crops.
5. What is the rainfast time?
The product generally becomes rainfast within 2 to 3 hours after spraying.
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.
