THOR PLUS: The One-Shot Weed Solution for Transplanted Rice
Parijat's THOR PLUS (Pretilachlor 37% EW) is your advanced partner for a weed-free start.
This powerful pre-emergence herbicide is designed to control the toughest annual grasses, sedges, and broadleaf weeds in your paddy field before they even start. Its modern "Emulsion in Water" (EW) formulation ensures maximum efficacy against weeds and superior safety for your rice crop.
Product Name: THOR PLUS
Why Farmers Trust THOR PLUS: Key Benefits
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Fast-Acting "One-Shot" Solution: Stops weeds before they emerge. Its broad-spectrum power controls grasses, sedges, and broadleaf weeds all at once.
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Superior Crop Safety: The advanced EW (Emulsion in Water) formulation is water-based. Unlike harsh EC formulas, it has no strong smell and is much safer for your young rice plants, preventing "crop burn" or phytotoxicity.
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Long-Duration Control: Forms a reliable chemical barrier on the soil that provides residual control, protecting your crop during its critical establishment phase.
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Excellent Spreading: Spreads quickly and uniformly across the paddy water to ensure complete coverage, leaving no gaps for weeds to escape.
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User & Equipment Friendly: Being water-based, it's safer for the applicator, has no fire hazard (no flash point), and is less harmful to sprayer equipment (hoses, seals) than old solvent-based products.
THOR PLUS: Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | THOR PLUS (Parijat Industries) |
| Technical Name | Pretilachlor 37% EW |
| IRAC MoA Code | Group K3 |
| Chemical Group | Chloroacetamide |
| Formulation | EW (Emulsion in Water) |
| Toxicity Label | Blue Label (Caution) |
How THOR PLUS Works: The Mode of Action
THOR PLUS is a selective, pre-emergence herbicide that works by inhibiting weed growth at the very beginning.
- Forms a Barrier: When sprayed on the paddy water (2-3 cm), it spreads out and binds to the topsoil, creating a "chemical barrier."
- Absorbed by Shoots: As weed seeds germinate, their new shoots (coleoptiles) grow through this barrier and absorb the herbicide.
- Stops Cell Division: Inside the weed, it inhibits a key enzyme (VLCFA), which stops the production of new cells and membranes. The weed cannot grow and dies before it ever breaks the surface.
This process is highly selective, controlling the weeds while your transplanted rice remains safe and healthy.
Target Weeds & Crops
| Crop | Target Pest(s) |
|---|---|
| Transplanted Rice | Controls a broad spectrum of Annual Grasses, Sedges, and Broadleaf Weeds. |
| Transplanted Rice | Grasses: Barnyard grass (*Echinochloa crus-galli*), Jungle rice (*Echinochloa colonum*), Chinese sprangletop (*Leptochloa chinensis*) |
| Transplanted Rice | Sedges & Broadleaves: Smallflower umbrella sedge (*Cyperus difformis*), Rice flatsedge (*Cyperus iria*), Water primrose (*Ludwigia parviflora*) |
THOR PLUS: 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) |
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| Transplanted Rice | 600 - 750 ml | 80 - 120 Litres | 6.0 - 7.5 ml | 90 |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply THOR PLUS: Best Practices
- Timing: CRITICAL. Apply only in the "Golden Window" of 0 to 5 Days After Transplanting (DAT). It will not work on weeds that have already emerged.
- Mixing: For spraying, mix the required dose in a few litres of water, then add to the full spray tank (80-120 L/acre). Can also be mixed with 20-50 kg of sand or urea per acre and broadcast evenly, but spraying is more effective.
- Coverage: Ensure the field has 2-3 cm of standing water at the time of application. This water is essential for the herbicide to spread. Do not drain the field for 2-3 days after spraying.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use.
Frequently Asked Questions (FAQs)
1. When is the best time to apply THOR PLUS?
The best and only time is 0 to 5 days after transplanting your rice. It is a pre-emergence
herbicide and must be applied before weeds germinate.
2. What is the difference between this EW formula and an EC formula?
EW (Emulsion in Water) is a modern, water-based formula. It's safer for your rice crop (less burn), safer for
you (no strong chemical smell, no fire hazard), and better for your sprayer. EC (Emulsifiable Concentrate)
is an older, solvent-based formula.
3. Can I use THOR PLUS if I already see weeds in my field?
No. THOR PLUS is a pre-emergence herbicide. It is designed to stop weeds from ever coming
up. It will not control weeds that have already emerged (e.g., at the 2-3 leaf stage).
4. How much water should be in the field during application?
This is very important. You must have a uniform level of 2-3 cm of standing water in the
field. This water acts as the carrier to spread the herbicide evenly. Do not drain this water for at least
2-3 days.
5. What weeds does THOR PLUS control?
It is a "one-shot" solution that controls all three major weed types in rice: annual grasses
(like Barnyard grass), sedges (like Cyperus), and broadleaf weeds (like
Water primrose).
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.
