Preet Herbicide by Rallis India (Pretilachlor 50% EC)
The Ultimate Pre-Emergence Solution for Weed-Free Transplanted Rice.
Stop worrying about labor shortages and weeds stealing your crop's nutrition. Preet Herbicide (Pretilachlor 50% EC) is a trusted broad-spectrum solution from Rallis India Limited (A Tata Enterprise). Designed specifically for transplanted rice, it acts as a chemical barrier, preventing weeds from germinating so your paddy gets 100% of the nutrients.
Best For: Farmers seeking a cost-effective alternative to manual weeding in the first 30-40 days of crop growth.
Why Choose This Product? Key Benefits
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Massive Cost Savings: One bottle replaces 10-15 manual laborers, saving you approximately ₹3000 - ₹4000 per acre in weeding costs.
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Broad-Spectrum Protection: Kills the toughest grasses (Barnyard grass), sedges, and broad-leaf weeds before they even appear.
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Early Action: Applied within 0-5 days of transplanting, it secures the critical "weed-free" window for early crop establishment.
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Water Compatible: Works excellently in standing water conditions, utilizing the water to spread the chemical evenly across the field.
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Tata Trust & Quality: Manufactured by Rallis India, ensuring high purity, correct dosing, and reliable results unlike generic adulterated products.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Preet Herbicide |
| Technical Name | Pretilachlor 50% EC |
| IRAC MoA Code | Group 15 (Inhibition of VLCFA) |
| Chemical Group | Chloroacetamide |
| Formulation | Emulsifiable Concentrate (Liquid) |
| Toxicity Label | Blue Triangle (Moderately Toxic) |
How It Works: Mode of Action
Preet works by stopping the weed before it can grow. It is a systemic herbicide absorbed by the roots and shoots of germinating seeds.
- VLCFA Inhibition: It blocks the production of Very Long Chain Fatty Acids, which are essential for building cell walls.
- Stops Cell Division: Without these fatty acids, the weed seedling cannot divide cells or grow new leaves.
- Buggy-Whipping: If a weed tries to emerge, it twists and deforms (a symptom called "buggy-whipping") and dies shortly after.
Note: Transplanted rice is safe because it can break down the chemical naturally, while weeds cannot.
Target Crops & Pests
[Image of Echinochloa crus-galli barnyard grass]| Crop | Target Pest(s) |
|---|---|
| Transplanted Rice (Paddy) | Barnyard Grass (Echinochloa crus-galli) |
| Transplanted Rice (Paddy) | Small-flower Umbrella Sedge (Cyperus difformis) |
| Transplanted Rice (Paddy) | Water Primrose (Ludwigia parviflora) & Jungle Rice |
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) |
|---|---|---|---|---|
| Transplanted Rice | 500 ml - 750 ml | Broadcasting (Standing Water) or 200L Spray | 2.5 - 3.75 ml | 75 - 90 Days |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. Use higher dose (750ml) for heavy clay soils; lower dose (500ml) for sandy soils.
How to Apply: Best Practices
- Timing: Apply strictly between 0 to 5 Days After Transplanting (DAT). If you wait longer, weeds may emerge, and the product will not work.
- Mixing (Sand Method): Mix the recommended dose (500-750ml) with 20-25 kg of dry sand or fertilizer. Broadcast uniformly across the field.
- Coverage (Water Management): Ensure the field has 2-3 inches of standing water. Maintain this water level for 3-5 days after application. Do not drain the field.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Avoid inhalation.
Frequently Asked Questions
1. Can I use Preet if weeds have already appeared?
No. Preet is a pre-emergence herbicide. It only works before weeds sprout. If you see green weeds (2-3 leaves), this product will not kill them.
2. Is it better to spray or use the sand-mix method?
Both work well. The sand-mix method is popular because it is easier and faster. Just ensure there is standing water in the field to help the chemical spread.
3. What happens if it rains after application?
Moderate rain is fine. However, heavy flooding that causes water to run off the field immediately can wash the chemical away, reducing effectiveness.
4. Is there an antidote for accidental poisoning?
No, there is no specific antidote. Treatment is symptomatic. If ingested, seek medical help immediately. Note: Symptoms may look like OP poisoning, but treatment differs.
5. Can I mix Preet with other herbicides?
Yes, for resistant broad-leaf weeds or sedges, farmers often tank-mix Preet with Almix or Bensulfuron Methyl. Always check compatibility labels first.
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. Toxic to fish; do not use near aquaculture.
