Check Plus Herbicide (Pretilachlor 37% EW) – Advanced Weed Control for Rice
The "Green Label" safety solution for transplanted paddy fields.
Check Plus by Nichino India is a premium pre-emergence herbicide designed specifically for the modern rice farmer. Unlike older solvent-heavy formulas, Check Plus uses advanced EW (Emulsion in Water) technology. This makes it safer for the applicator and gentler on your paddy crop while delivering powerful control against stubborn grasses, sedges, and broadleaf weeds.
Best For: Farmers seeking a safe, cost-effective alternative to manual weeding that protects yield potential from day one.
Why Choose This Product? Key Benefits
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Rapid Action Formula: Absorbs quickly through weed shoots to stop competition within the first 30 critical days.
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Green Label Safety: classified as "Slightly Toxic" (Green Triangle), making it safer for farmers compared to older Blue or Yellow label herbicides.
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Zero Crop Shock: The water-based EW formulation prevents the "stunting" or leaf burn often caused by petroleum solvents in older EC herbicides.
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Flexible Application: Can be sprayed or easily mixed with sand/fertilizer and broadcasted into standing water, saving labor costs.
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The "Greening Effect": By eliminating weed competition for nitrogen early, Check Plus helps rice seedlings establish faster and look greener.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Check Plus |
| Technical Name | Pretilachlor 37% EW |
| IRAC MoA Code | Group 15 (VLCFA Inhibitor) |
| Chemical Group | Chloroacetamide |
| Formulation | Emulsion in Water (EW) |
| Toxicity Label | Green Label (Slightly Toxic) |
How It Works: Mode of Action
Check Plus works by inhibiting Very Long Chain Fatty Acid (VLCFA) synthesis, which is essential for cell division.
- Absorption: The herbicide is absorbed primarily through the shoots (coleoptile) of germinating weeds and secondarily through the roots.
- Disruption: It halts cell division and elongation within the weed seedling before it can emerge from the water/soil.
- Termination: Weeds fail to develop cell membranes and die underground or emerge stunted and rot away.
Note: Rice seedlings are protected due to their advanced growth stage (transplanting) and physiological ability to metabolize the chemical.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Transplanted Rice (Paddy) | Grasses: Barnyard Grass (Echinochloa crus-galli), Jungle Rice (Echinochloa colonum). |
| Sedges: Smallflower Umbrella Sedge (Cyperus difformis), Rice Flatsedge (Cyperus iria). | |
| Broadleaf Weeds: Water Primrose (Ludwigia parviflora), False Daisy (Eclipta alba). |
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 Spraying) | 3 - 3.75 ml | 90-110 (Harvest) |
| (Method: Sand Mix) | 600 - 750 ml | N/A (Mix with 20kg Sand) | N/A | 90-110 |
*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 5 Days After Transplanting (DAT). If you wait longer, weeds will emerge, and the product will not work.
- Mixing: For sand mix, mix the dose with 20-25kg of dry sand or fertilizer. For spraying, use a Flat Fan or Flood Jet nozzle.
- Coverage: Maintain 1-2 inches of standing water in the field for 5-7 days after application. This "seals" the herbicide and prevents weed germination.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Do not use in fields where fish farming is practiced.
Frequently Asked Questions
1. What is the difference between Check (EC) and Check Plus (EW)?
Check Plus (EW) is a water-based "Green Label" formulation. It eliminates the smell and crop-shock risks associated with the solvents found in the older EC versions.
2. Can I apply this after weeds have already appeared?
No. Check Plus is a pre-emergence herbicide. It must be applied (0-5 DAT) before weeds start to germinate.
3. Is it safe for my paddy crop?
Yes, extremely safe. The EW formulation prevents the leaf yellowing or stunting sometimes seen with other chemical herbicides.
4. Do I need to drain the water before application?
No. Ensure there is a thin film or standing water. After application, do not drain or flood the field for 24 hours to prevent runoff.
5. Can I use this in fish farming (pisciculture)?
No. Pretilachlor is toxic to fish. Do not use in rice-fish farming systems.
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.
