Check Herbicide (Pretilachlor 50% EC) by Nichino | Premium Paddy Weed Control
Stop weeds before they start with Check, the expert solution for Transplanted Rice.
Nichino Check (Pretilachlor 50% EC) is a broad-spectrum, pre-emergence herbicide designed specifically for Indian paddy fields. It eliminates the need for expensive manual weeding by forming a protective chemical barrier over the water surface.
Best For: Controlling grasses, sedges, and broadleaf weeds in the first critical month of crop growth.
Why Choose This Product? Key Benefits
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Perfect Timing: Apply within 0 to 4 days of transplanting to stop weeds before they emerge.
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Broad Spectrum Defense: Effectively kills tough weeds like Barnyard Grass, Sedges, and Broadleaf varieties in one shot.
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Long-Lasting Control: Provides residual control that keeps your field weed-free during the critical early crop stages.
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Water Compatible: Formulated specially to work in the standing water environment of transplanted paddy.
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Crop Safety (Green Label): Highly selective to rice plants with a "Green Label" safety rating when used as directed.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Check |
| Technical Name | Pretilachlor 50% EC |
| IRAC MoA Code | Group 15 (VLCFA Inhibitor) |
| Chemical Group | Chloroacetamide |
| Formulation | Emulsifiable Concentrate (EC) |
| Toxicity Label | Green Label (Environmentally Safer) |
How It Works: Mode of Action
Check works by targeting the weed's ability to divide cells. It is absorbed rapidly by the shoots (coleoptiles) of germinating weeds.
- Absorption: As the weed seed germinates and tries to push through the treated water/soil surface, it absorbs the chemical.
- Inhibition: The active ingredient blocks the synthesis of Very Long Chain Fatty Acids (VLCFA), which are essential for cell membrane formation.
- Termination: Without these fatty acids, cell division stops. The weed seedling dies before it can emerge above the water level.
Note: Rice plants are safe because their roots are deeper in the soil and they can naturally metabolize the chemical.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Transplanted Rice (Paddy) | Barnyard Grass (Echinochloa crus-galli), Jungle Rice |
| Transplanted Rice (Paddy) | Smallflower Umbrella Sedge, Rice Flat Sedge |
| Transplanted Rice (Paddy) | False Daisy (Eclipta alba), Water Primrose (Ludwigia) |
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) |
|---|---|---|---|---|
| Rice (Light Soil) | 400 - 500 ml | Apply via Sand Mix (25kg) | -- | Safe |
| Rice (Heavy Soil) | 500 - 600 ml | Apply via Sand Mix (25kg) | -- | Safe |
| Rice (Spray Method) | 500 ml | 200 - 250 Litres | 2.5 ml | Safe |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. (Residues are generally below detectable limits at harvest).
How to Apply: Best Practices
- Timing: Apply strictly between 0 to 4 days after transplanting. Do not delay.
- Mixing: Shake the bottle well. Mix the required dose with 20-25 kg of dry sand or fertilizer and broadcast uniformly. Alternatively, mix with water for spraying.
- Coverage: Ensure the field has 2-3 cm of standing water. Maintain this water level for 5-7 days after application. Do not drain the water.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use.
Frequently Asked Questions
1. Can I use Check for Direct Seeded Rice (DSR)?
No. Check (Pretilachlor 50% EC) acts on germinating seeds. In DSR, it can damage the rice seed itself. Use only for transplanted rice where seedlings are already 20+ days old.
2. Is there an antidote for accidental poisoning?
There is no specific antidote. Treatment is symptomatic. In case of ingestion or severe exposure, seek medical help immediately and show the bottle/leaflet.
3. What happens if the field dries up after application?
The chemical film will break, and weeds may germinate in the cracks. It is critical to maintain standing water for 5-7 days to ensure the herbicide works effectively.
4. Will it kill weeds that have already grown?
No. Check is a pre-emergence herbicide. It stops weeds *before* they appear. For existing weeds, a post-emergence herbicide is required.
5. Is it safe for fish farming in paddy fields?
No. Pretilachlor is toxic to fish. Do not use in fields used for aquaculture or where water runoff enters fish ponds.
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.
