Kri-Stop Herbicide (Pendimethalin 30% EC): The Ultimate Pre-Emergence Weed Controller
Stop weeds before they steal your crop's nutrition. Kri-Stop is the definitive solution for Wheat, Rice, Cotton, and Soybean farmers.
Weeds are the biggest enemy of your yield, stealing sunlight, water, and nutrients from day one. Kri-Stop (Pendimethalin 30% EC) by Krishi Rasayan acts as a powerful shield for your soil. Unlike herbicides that kill weeds after they grow, Kri-Stop creates a chemical barrier that prevents weed seeds from ever germinating.
Best For: Farmers looking to control Phalaris minor (Gulli Danda), Barnyard grass, and broadleaf weeds without manual labor.
Why Choose This Product? Key Benefits
-
⏱️
Early Action Protection: Applied within 0-3 days of sowing, it kills weeds before they emerge, giving your crop a 100% stress-free start.
-
🛡️
Broad Spectrum Control: Effectively eliminates tough grasses like Phalaris minor and Echinochloa, as well as broadleaf weeds like Bathua and Pigweed.
-
⏳
Long-Lasting Residual Effect: Stays active in the topsoil for 30 to 90 days, keeping your fields clean during the crop's most critical growth phase.
-
🌧️
Resistant Weeds Solution: Works on weeds that have developed resistance to other common herbicides (like Isoproturon), making it a smart choice for crop rotation.
-
🌿
Cost-Effective: One spray costs roughly 15-20% of what you would pay for manual weeding labor, saving you thousands of Rupees per acre.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Kri-Stop |
| Technical Name | Pendimethalin 30% EC |
| IRAC MoA Code | K1 (Microtubule Assembly Inhibitor) |
| Chemical Group | Dinitroaniline |
| Formulation | Emulsifiable Concentrate (EC) |
| Toxicity Label | Blue / Slightly Toxic (Caution Required) |
How It Works: Mode of Action
Kri-Stop acts as a "Mitosis Inhibitor." It works at the microscopic level to stop weeds before you even see them.
- Stops Cell Division: The active ingredient binds to the weed's tubulin protein, preventing cells from dividing.
- Root Stunting: As the weed seed tries to germinate, its root tips swell into a "club" shape and fail to grow deeper.
- Starvation & Death: Without a functional root system, the weed seedling cannot drink water or nutrients and dies immediately—often before breaking the soil surface.
Note: Your crop seeds are safe because they are planted deeper (4-5 cm) below the chemical layer.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Wheat | Phalaris minor (Gulli Danda), Chenopodium (Bathua), Melilotus |
| Rice (Transplanted & DSR) | Echinochloa spp. (Barnyard grass), Sedges, Marsilea (Water Clover) |
| Cotton & Soybean | Trianthema (Carpet weed), Amaranthus, Goosegrass |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Soil texture matters—use higher doses for heavy clay soils and lower doses for sandy soils.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Wheat | 1300 - 2000 ml | 200 - 280 L | ~ 7 ml/L | 110 |
| Rice / Cotton | 1000 - 1500 ml | 200 - 250 L | ~ 6 ml/L | 90 |
| Soybean | 1000 - 1500 ml | 200 - 250 L | ~ 6 ml/L | 90 |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
- Timing (0-3 DAS): Apply strictly within 0 to 3 days after sowing. Do not wait for weeds to appear; once they germinate, this product is less effective.
- Reverse Walking Technique: This is mandatory. Spray while walking backward so you do not step on the treated soil. Footprints break the chemical film, allowing weeds to grow in your steps.
- Mixing & Nozzles: Use a Flat Fan or Flood Jet nozzle to create a uniform "carpet" over the soil. Do not use cone nozzles. High water volume (200 L/acre) is essential for coverage.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Toxic to fish—do not use near ponds.
Frequently Asked Questions
1. Can I use Kri-Stop on crops that have already sprouted?
No. Kri-Stop is a pre-emergence herbicide. It must be applied before weeds and crops emerge (0-3 days after sowing).
2. Does it require soil moisture to work?
Yes. The soil must have adequate moisture for the herbicide to activate and kill weed seeds. If the soil is bone dry, light irrigation may be needed.
3. Can I mix Kri-Stop with other herbicides?
Yes. It is often tank-mixed with Metribuzin (for Wheat) or Imazethapyr (for Soybean) to broaden the weed control spectrum.
4. What if I walk on the sprayed area?
Walking on treated soil breaks the chemical barrier. Weeds will likely grow in your footprints. Always use the "reverse walking" method.
5. Is it safe for the crop seeds?
Yes, provided the crop is sown at a depth of 4-5 cm. The herbicide stays in the top layer, while crop roots grow safely below it.
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. Avoid inhalation of spray mist and contact with skin/eyes.
