Gharda Chamatkar Plant Growth Regulator (Mepiquat Chloride 5% AS)
Stop Unwanted Growth & Boost Your Harvest Yield
Are your crops growing too tall with fewer fruits? Gharda Chamatkar is a specialized Plant Growth Regulator (PGR) designed to solve the problem of "rank growth" (excessive height). By containing the unwanted vegetative growth of your plants, it redirects vital energy toward developing fruits, bolls, and tubers.
Perfect for Cotton, Potato, and Groundnut farming, Chamatkar ensures your crop stays compact, green, and highly productive.
Why Choose This Product? Key Benefits
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Controls Excessive Height: Stops unnecessary stem elongation instantly, keeping plants sturdy and manageable.
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Prevents Flower & Fruit Drop: Strengthens the plant system to retain more flowers, bolls, and pods for a bigger harvest.
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Increases Yield & Size: Boosts the size and weight of Potato tubers and Cotton bolls by channeling nutrition where it matters.
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Dark Green, Healthy Leaves: Increases chlorophyll content within days, leading to darker leaves and better photosynthesis.
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Prevents Lodging (Falling Over): Thickens stems, making crops resistant to falling down during high winds or heavy rains.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Chamatkar |
| Technical Name | Mepiquat Chloride 5% AS |
| IRAC MoA Code | Plant Growth Regulator (PGR) |
| Chemical Group | Quaternary Ammonium Compound |
| Formulation | Aqueous Solution (Liquid) |
| Toxicity Label | Moderately Toxic (Adhere to Safety Precautions) |
How It Works: Mode of Action
Chamatkar works by altering the plant's internal "traffic system" for nutrients. Instead of sending all energy to grow tall stems and new leaves (Sources), it forces the plant to send energy to the fruit and tubers (Sinks).
- Stops Hormone Production: It inhibits the biosynthesis of Gibberellic Acid (GA), the hormone responsible for tall, lanky stem growth.
- Cellular Compaction: It does not stop cell division but restricts cell elongation. This results in shorter distance between leaves (internodes) and a sturdier plant.
- Energy Redirection: By stopping vertical growth, the plant's sugar and energy are redirected to reproductive parts—making cotton bolls heavier and potato tubers larger.
Result: A compact crop with darker green leaves and higher harvestable yield.
Target Crops & Benefits
| Crop | Target Benefits |
|---|---|
| Cotton | Controls height, prevents boll rotting, improves boll retention, eases harvesting. |
| Potato | Increases tuber size and weight, ensures uniform shape, controls haulm (leaf) growth. |
| Groundnut | Controls excessive vine growth, improves pod filling and kernel weight. |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Overdosing can lead to stunted plants.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Cotton | 400 – 500 ml | 200 – 400 L | 2 – 2.5 ml | Refer to Label |
| Potato | 500 – 600 ml | 200 – 240 L | 2.5 – 3 ml | Refer to Label |
| Groundnut | 500 ml | 200 L | 2.5 ml | Refer to Label |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. Always check the bottle leaflet for specific local harvest wait times.
How to Apply: Best Practices
- Timing: For Cotton, apply at the start of flowering or when you see the crop growing too tall. For Potato, apply during early vegetative stage or tuber initiation.
- Mixing: If tank-mixing, add Chamatkar last after other powders or granules are dissolved. Maintain water pH between 5.5 and 6.5.
- Coverage: Ensure thorough coverage of the foliage. The product contains a red dye (Acid Red 52) to help you see where you have sprayed to avoid double-dosing.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Re-entry into the field should be avoided for 24 hours after spraying.
Frequently Asked Questions
1. Can I mix Chamatkar with insecticides?
Yes, it is generally compatible. It works very well in synergy with Hamla 550 (Chlorpyriphos + Cypermethrin) to control pests like Bollworms while managing plant height. Always perform a small jar test first.
2. What happens if I use too much (overdose)?
Overdosing can lead to excessive stunting, where the plant stops growing almost entirely. Always stick to the recommended dosage of 400-600ml per acre depending on the crop.
3. How long does it take to see results?
You will typically notice the leaves turning a deeper, darker green color within 3 to 6 days after application.
4. Is there an antidote for accidental poisoning?
No, there is no specific antidote for Mepiquat Chloride. In case of ingestion or severe exposure, treatment is symptomatic. Prevention and safety gear are critical.
5. Why is the liquid colored?
The formulation includes a dye called Acid Red 52. This is a safety marker to help farmers see exactly where they have sprayed, preventing skips or double-spraying.
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.

