Lara-909 - Chlorpyrifos 50% + Cypermethrin 5% EC - Crystal
Item description
Lara 909 Insecticide (Chlorpyriphos 50% + Cypermethrin 5% EC)
The "505" Formulation: A Dual-Action Powerhouse for Cotton and Paddy.
Lara 909 by Crystal Crop Protection is a broad-spectrum insecticide designed to tackle the toughest pest complexes in Indian agriculture. Known popularly as the "505" mixture, it combines the heavy-hitting power of Chlorpyriphos (Organophosphate) with the rapid knockdown speed of Cypermethrin (Synthetic Pyrethroid). This synergistic blend ensures that pests are stopped immediately upon contact and eliminated through stomach poison action.
Best for: Farmers looking for a cost-effective, single-spray solution to control both chewing pests (like Bollworms) and sucking pests (like Aphids and Jassids) simultaneously.
Why Choose This Product? Key Benefits
- ⏱️ Instant Knockdown: Cypermethrin acts immediately upon contact, stopping pests from feeding and preventing further crop damage within minutes.
- ?️ Double Protection: Offers a dual mode of action—Systemic (Stomach) poison to kill internal borers and Contact poison to kill surface pests.
- ⏳ Long-Lasting Control: The formulation adheres to waxy leaf surfaces, providing residual protection for 10 to 14 days against re-infestation.
- ?️ Vapor Action (Fumigant): Chlorpyriphos creates a vapor that penetrates dense canopies, reaching pests hidden in curled leaves, cotton bolls, or soil crevices.
- ? Broad Spectrum: A true "All-in-One" solution that controls the Bollworm complex, Stem Borers, Leaf Folders, and sucking pests in a single spray.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Lara 909 |
| Technical Name | Chlorpyriphos 50% + Cypermethrin 5% EC |
| IRAC MoA Code | 1B (Organophosphate) + 3A (Pyrethroid) |
| Chemical Group | Organophosphates + Synthetic Pyrethroids |
| Formulation | EC (Emulsifiable Concentrate) |
| Toxicity Label | ? Yellow Triangle (Highly Toxic) |
How It Works: Mode of Action
Lara 909 attacks the insect nervous system from two angles, making it nearly impossible for the pest to survive.
- Nerve Inhibition (Chlorpyriphos): It inhibits the enzyme Acetylcholinesterase (AChE). This causes a buildup of acetylcholine, leading to continuous nerve firing, tremors, and eventual paralysis.
- Sodium Channel Lock (Cypermethrin): It keeps the sodium channels in the nerve cells open. This creates a "shock" effect, causing immediate hyperexcitation and rapid knockdown.
- Synergy: The vapor action flushes pests out of hiding, while the contact action kills them instantly.
This dual mechanism helps manage pests that may have developed resistance to single-molecule insecticides.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Cotton | Bollworm Complex (American, Spotted, Pink), Aphids, Jassids, Thrips, Whitefly. |
| Paddy (Rice) | Yellow Stem Borer, Leaf Folder. |
| Vegetables (Brinjal/Okra) | Shoot & Fruit Borer, Aphids, Jassids (Check PHI before use). |
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) |
|---|---|---|---|---|
| Cotton | 200 – 400 ml | 200 – 400 L | 1.5 – 2 ml | 15 Days |
| Paddy (Rice) | 300 – 375 ml | 300 – 400 L | 1.5 – 2 ml | 21 Days |
| Vegetables | 300 – 400 ml | 300 – 400 L | 1.5 – 2 ml | 15-21 Days |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
- Timing: Apply at the "Initial Instar" stage (egg hatching) or when pest population reaches the Economic Threshold Level (ETL). For bollworms, 5% damage is the trigger.
- Mixing: Lara 909 is compatible with most neutral fungicides (like Mancozeb). WARNING: Do NOT mix with alkaline products like Bordeaux mixture or Lime Sulphur, as this reduces efficacy.
- Coverage: Ensure full coverage of the foliage. For Stem Borers in paddy, direct the nozzle toward the base of the plant.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Avoid spraying during bee foraging hours (mid-day).
Frequently Asked Questions
1. Does Lara 909 kill Whiteflies?
Yes, it is effective against Whiteflies in Cotton, but it is
best used as a corrective spray rather than a preventive
one. For heavy infestations, ensure thorough under-leaf coverage.
2. Can I mix Lara 909 with fungicides?
Yes, it is physically compatible with fungicides like
Carbendazim and Mancozeb. Do not mix it with copper-based or
alkaline fungicides.
3. How long does the result last?
Under normal weather conditions, Lara 909 provides residual
protection for 10 to 14 days. Rain immediately after
spraying may reduce this duration.
4. Is Lara 909 safe for home gardens?
This is a Class II (Highly Toxic) pesticide. It is
generally not recommended for small home gardens
or indoor plants due to its strong smell and toxicity. It is
intended for field crops.
5. What is the antidote for accidental
poisoning?
In case of ingestion or
severe exposure, Atropine Sulphate is the physiological
antidote. Immediate medical attention is required.
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.
Quick Facts
Watering
Twice a week
Sunlight
Indirect light
Humidity
High 60-80%
Temperature
18-27°C