Laran Herbicide (Pyrithiobac Sodium 10% EC) by Parijat | Broadleaf Weed Control for Cotton
The trusted post-emergence solution for protecting Cotton crops against tough broadleaf weeds.
Laran (Pyrithiobac Sodium 10% EC) is a specialized selective herbicide manufactured by Parijat Industries. Designed specifically for Cotton farmers, it effectively eliminates aggressive broadleaf weeds like Carpet Weed and Pigweed without harming your crop. By stopping the production of essential amino acids in weeds, Laran ensures your cotton gets all the nutrients and sunlight it needs to thrive.
Best For: Controlling broadleaf weeds in Cotton fields during the early growth stages (20-25 days after sowing).
Why Choose This Product? Key Benefits
-
⏱️
Stops Growth Instantly:
Weed growth is arrested within hours of spraying, preventing them from competing with your cotton. -
🛡️
100% Cotton Safe:
Highly selective formula. Your cotton plants naturally break down the chemical, keeping them safe while weeds die. -
⏳
Double Action Protection:
Works through leaves (foliar) and roots, providing residual soil activity to suppress new weed germination. -
🌧️
Excellent Rainfastness:
The high-quality EC formulation penetrates waxy leaves quickly, making it effective even in variable weather. -
🌿
Broad Spectrum Control:
Specifically targets tough broadleaf weeds like Trianthema (Santha) and Amaranthus (Chaulai).
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Laran / Arado |
| Technical Name | Pyrithiobac Sodium 10% EC |
| IRAC MoA Code | Group 2 (ALS Inhibitor) |
| Chemical Group | Pyrimidinylthiobenzoate |
| Formulation | Emulsifiable Concentrate (EC) |
| Toxicity Label | Yellow (Moderately Toxic) |
How It Works: Mode of Action
Laran works by disrupting the internal "food factory" of the weed. It targets a specific enzyme system essential for plant life.
- Systemic Absorption: Upon spraying, the chemical is rapidly absorbed by the weed's leaves and roots.
- Translocation: It travels through the plant to the growing points (shoot and root tips).
- Enzyme Blockade: It inhibits the ALS enzyme, stopping the production of vital amino acids (Valine, Leucine, Isoleucine). The weed starves, turns yellow, and dies.
Result: Weeds stop growing immediately, turn yellow within 3-7 days, and completely die within 14-21 days.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Cotton | Carpet Weed (Trianthema portulacastrum) |
| Cotton | Pigweed (Amaranthus spp.) & Bathua (Chenopodium) |
| Cotton | Digera (Digera arvensis) & Silver Cockscomb |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Applying too little causes resistance; applying too much wastes money.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Cotton | 250 - 300 ml | 200 L | 1.25 - 1.5 ml | Per Label |
| Cotton (High Density) | 300 ml | 200 L | 1.5 ml | Per Label |
| Cotton (Tank Mix) | Consult Agronomist | 200 L | - | Per Label |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. Always check the bottle label for local PHI regulations.
How to Apply: Best Practices
- Timing: Spray when weeds are in the 2-4 leaf stage (usually 20-25 days after sowing). If weeds are too big, efficacy drops.
- Mixing: Use clean water. Shake the bottle well before mixing. If mixing with a grass-killer (graminicide), consult an expert first.
- Coverage: Ensure the spray covers the weeds completely. A flat-fan nozzle is recommended for even distribution.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Avoid eye contact as this product can cause irritation.
Frequently Asked Questions
1. Is Laran safe for my Cotton crop?
Yes, Laran is highly selective. It kills the weeds but your Cotton plants have a natural enzyme that breaks down the chemical, keeping them safe.
2. Does it kill grassy weeds?
No, Laran is primarily for broadleaf weeds. For grasses, you may need to mix it with a graminicide like Quizalofop Ethyl (check compatibility first).
3. When will I see results?
Weeds stop growing within hours. You will see yellowing (chlorosis) in 3-7 days, and complete death occurs in about 2 to 3 weeks.
4. What happens if it rains after spraying?
The EC formulation penetrates leaves quickly. However, it works best if there is no heavy rain for a few hours after application. Slight moisture later helps soil activity.
5. Can I plant other crops after Cotton?
Be careful. This herbicide has soil residue. Avoid planting sensitive crops like mustard or certain vegetables immediately after the cotton harvest.
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.
