Prince Drt Herbicide (Pretilachlor 37% EW) for Rice
The advanced "Safety First" weed solution for modern paddy farming.
Prince Drt by Krishi Rasayan is a specialized pre-emergence herbicide designed to protect transplanted rice during its most critical growth stage. Unlike older, harsh chemical formulas, Prince Drt uses advanced EW (Emulsion-in-Water) technology. This means it is powerful against weeds but gentle on your paddy, preventing the "crop burn" often caused by traditional solvent-based herbicides.
Best For: Controlling annual grasses, sedges, and broadleaf weeds before they emerge.
Why Choose This Product? Key Benefits
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Stops Weeds Early: Kills weeds at the moment of germination (0-3 days), ensuring your rice has zero competition for nutrients.
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Zero Crop Shock: The water-based EW formula eliminates the risk of "phytotoxicity" (leaf burning/stunting) common with older EC herbicides.
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Long-Lasting Barrier: Forms a chemical layer on the soil surface that prevents weed emergence for weeks.
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Water Compatible: Specifically designed to work effectively in standing water conditions typical of transplanted paddy.
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Broad Spectrum Control: One shot controls grasses, tough sedges, and broad-leaved weeds simultaneously.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Prince Drt (or Prince D2T) |
| Technical Name | Pretilachlor 37% EW |
| IRAC MoA Code | Group K3 (VLCFA Inhibition) |
| Chemical Group | Chloroacetanilide |
| Formulation | Emulsion in Water (EW) |
| Toxicity Label | Blue Triangle (Moderately Toxic) |
How It Works: Mode of Action
Prince Drt works by targeting the weed's ability to grow at the cellular level. It is a systemic herbicide that is absorbed by the shoots and roots of germinating weeds.
- Absorption: As the weed seedling tries to emerge from the soil, it absorbs the chemical through its shoot (coleoptile).
- Inhibition: The chemical blocks the production of Very Long Chain Fatty Acids (VLCFAs), which are essential for building cell membranes.
- Elimination: Without these fatty acids, cell division stops. The weed seedling dies before it can even break the soil surface.
Note: Rice plants are safe because they have natural enzymes that break down the chemical quickly, unlike weeds.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Transplanted Rice (Paddy) | Barnyard Grass (Echinochloa crus-galli) |
| Transplanted Rice (Paddy) | Smallflower Umbrella Sedge (Cyperus difformis) |
| Transplanted Rice (Paddy) | False Daisy (Eclipta alba) & Purple Nutsedge |
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 | 600 - 750 ml | 200 L (for spray) | 3.0 - 3.75 ml | 90 |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
- Timing: Apply strictly between 0 to 3 Days After Transplanting (DAT). It must be applied before weeds emerge.
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Mixing:
- Method A (Spray): Mix 600-750ml in 200 Liters of water and spray uniformly.
- Method B (Shaker/Sand): Mix the dose with 20-25kg of dry sand or fertilizer and broadcast evenly into standing water.
- Coverage: Maintain a standing water level of 2-3 inches in the field for 5-7 days after application. This "seals" the herbicide in the soil.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use.
Frequently Asked Questions
1. What is the difference between Prince Drt and standard Pretilachlor 50% EC?
Prince Drt uses 37% EW (Emulsion in Water) technology. It is safer for the crop, has less smell, is non-flammable, and does not cause the "leaf burn" often seen with the solvent-based 50% EC formulas.
2. Can I use Prince Drt if weeds have already grown (2-3 leaves)?
No. Prince Drt is a pre-emergence herbicide. It works by stopping weed seeds from germinating. It will not kill weeds that have already established roots and leaves.
3. Is there an antidote for accidental poisoning?
No, there is no specific antidote for Pretilachlor. Treatment is symptomatic and supportive. Immediate medical attention is required.
4. Can I mix this with other herbicides?
It is generally applied alone as a foundation spray. Consult an agronomist before tank-mixing with other chemicals to avoid crop reaction.
5. Why is standing water important?
Water acts as the vehicle to spread the herbicide evenly across the field. If the field is dry, the chemical won't spread, leading to poor weed control.
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. This product is toxic to aquatic life; do not use near fish ponds.
