Astra-Pymetrozine 50% Wg
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Astra Insecticide (Pymetrozine 50% WG) – Expert BPH Control for Rice
Stop "Hopper Burn" instantly with Coromandel’s advanced selective chemistry.
Is your rice crop suffering from Brown Plant Hoppers (BPH) or White Backed Plant Hoppers (WBPH)? Astra Insecticide is the ultimate solution for modern paddy farming. Powered by Pymetrozine 50% WG, Astra doesn't just kill pests—it immediately stops them from feeding, protecting your yield from damage and viral diseases.
Best For: Farmers looking for a "Spider-Friendly" solution that breaks pest resistance and ensures a healthy, green harvest.
Why Choose This Product? Key Benefits
- ⏱️Immediate Feeding Stop: Pests stop sucking sap immediately after contact, preventing "Hopper Burn."
- ?️Long-Lasting Protection: Provides residual control for 14 to 21 days, reducing the need for frequent sprays.
- ⏳Systemic Action: Moves upward and downward in the plant to reach pests hiding at the base of the stem.
- ?️Excellent Rainfastness: Absorbs quickly and is safe from rain wash-off within just 2-3 hours.
- ?Eco-Friendly & Safe: Safe for beneficial insects like spiders and mirid bugs, supporting natural pest control.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Astra |
| Technical Name | Pymetrozine 50% WG |
| IRAC MoA Code | Group 9B (Chordotonal Organ Modulator) |
| Chemical Group | Pyridine Azomethines |
| Formulation | Water Dispersible Granules (WG) |
| Toxicity Label | Blue (Moderately Toxic) / Green (Slightly Toxic) |
How It Works: Mode of Action
Astra operates on a unique "Starvation Mechanism" that is completely different from older pesticides. It targets the nervous system responsible for feeding behavior.
- Feeding Blockage: Upon contact or ingestion, the chemical locks the insect's stylus (mouthpart).
- Immediate Cessation: The pest may still move alive, but it physically cannot feed on the plant anymore.
- Starvation: Within 1 to 4 days, the pest dies from starvation and dehydration, breaking the reproductive cycle.
Note: This unique action makes it highly effective against pests that have developed resistance to other chemicals like Imidacloprid.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Rice (Paddy) | Brown Plant Hopper (BPH), White Backed Plant Hopper (WBPH) |
| Cotton | Aphids, Whiteflies |
| Vegetables (Chilli/Tomato) | Aphids |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. The correct dosage ensures resistance management and crop safety.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (g / Acre) | Water (L / Acre) | Dose (g / Litre) | PHI (Days) |
|---|---|---|---|---|
| Rice (Paddy) | 120 g | 150 - 200 L | 0.6 - 0.8 g | 19 - 21 Days |
| Cotton | 120 - 150 g | 200 L | 0.75 g | - |
| Drone Spray (Paddy) | 120 g | 10 - 20 L | 6 - 12 g | 19 - 21 Days |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting to meet export standards.
How to Apply: Best Practices
- Timing: Apply at the tillering stage or when you see 10-15 hoppers per hill. It works best on early nymph stages (1st & 2nd instar).
- Mixing: Pre-dissolve the granules in a small mug of water to make a slurry before adding to the main tank. It has a built-in antifoaming agent.
- Coverage: BPH lives at the base of the plant. Direct the spray nozzle toward the water line/clumps, not just the top leaves.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Avoid spraying when honey bees are active (spray in late evening).
Frequently Asked Questions
1. Does Astra kill the pest immediately?
It stops the pest from feeding immediately (instant crop protection), but the pest may remain alive on the plant for 2-4 days before dying of starvation.
2. Is Astra safe for spiders in the rice field?
Yes, Astra is highly selective. It kills hoppers but is relatively safe for natural enemies like spiders and mirid bugs, which helps prevent pest resurgence.
3. Can I mix Astra with fungicides?
Yes, it is generally compatible with common rice fungicides like Hexaconazole (for Sheath Blight) and Tricyclazole (for Blast). Do not mix with highly alkaline products like Bordeaux mixture.
4. Can I use a drone to spray Astra?
Yes, Pymetrozine 50% WG is approved for drone application in India. Use the standard acre dose (120g) in reduced water volume (10-20 Liters).
5. Why is it a Granule (WG) instead of a powder?
The WG formulation is dust-free (safer for the user), measures easily, and dissolves instantly in water without clogging nozzles.
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. Astra is toxic to aquatic life; do not drain treated field water into fish ponds for at least 7 days.
