Kripon (Ethephon 39% SL) – Expert Plant Growth Regulator for Ripening & Yield
Unlock the full potential of your harvest with Krishi Rasayan's premium growth booster.
Kripon is a high-performance Plant Growth Regulator (PGR) containing Ethephon 39% SL. Unlike messy gases or dangerous chemicals like carbide, Kripon is a safe, liquid formulation that plants absorb easily. Once inside the plant, it releases "Ethylene"—nature's own ripening signal. Whether you need to ripen mangoes uniformly, boost rubber latex flow, or induce pineapple flowering on demand, Kripon puts you in control of your crop's biological clock.
Manufactured by Krishi Rasayan Exports Pvt. Ltd. (KREPL), a leader in agrochemicals since 1966, this product meets global export standards and GLP (Good Laboratory Practice) certifications.
Why Choose Kripon? Key Benefits
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Synchronized Harvests: Triggers uniform flowering and ripening, allowing for efficient "strip harvesting" in coffee and "block harvesting" in pineapples.
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Safe & Certified: A safer, legal alternative to banned calcium carbide for fruit ripening. Manufactured in GLP-certified facilities.
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High Stability: Formulated with a specific acidic pH (1.5–2.0) to ensure the active ingredient stays potent for up to two years on the shelf.
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Systemic Action: Quickly absorbed by plant tissues, working from the inside out to regulate growth, color, and maturity.
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Multi-Crop Versatility: Proven effective for Mango, Coffee, Rubber, Pineapple, Tomato, Pomegranate, and Cucumber.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Kripon |
| Technical Name | Ethephon 39% SL |
| Mode of Action | Systemic Ethylene Releaser |
| Chemical Group | Organophosphonate |
| Formulation | Soluble Liquid (SL) |
| Toxicity Label | Bright Blue (Moderately Toxic) |
How It Works: Mode of Action
Kripon acts as a "latent" source of ethylene. While it is stable in the acidic environment of the bottle, it transforms once it enters the plant.
- Absorption & pH Change: After spraying, the liquid is absorbed into the plant cells. The plant's cytoplasm has a neutral pH (around 7.0–7.4).
- Ethylene Release: This neutral pH triggers a chemical reaction in the Ethephon molecule, causing it to decompose and release Ethylene gas ($C_2H_4$) directly inside the tissue.
- Physiological Trigger: This internal ethylene signals the plant to start ripening, detach fruit (abscission), change color (degreening), or initiate flowering, depending on the crop and timing.
Note: Because this reaction depends on pH, never mix Kripon with alkaline water or pesticides, as the gas will escape before entering the plant.
Target Crops & Benefits
[Image of mango ripening stages]| Crop | Key Benefit / Target |
|---|---|
| Mango | Induces flowering in "off" years; Post-harvest uniform ripening (carbide replacement). |
| Pineapple | Forces uniform flowering for synchronized harvest. |
| Coffee (Arabica/Robusta) | Ensures uniform berry ripening for efficient strip harvesting. |
| Rubber | Increases latex yield by preventing coagulation (clogging) at the cut. |
| Tomato | Post-harvest treatment for uniform red color development. |
| Pomegranate | Defoliation (Leaf dropping) to induce flowering (Bahar treatment). |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Do not overdose, as this can cause plant damage (phytotoxicity).
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop / Use | Dose (ml / Acre) | Water (L / Acre) | Approx. Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Mango (Flower Induction) | 1538 – 2051 ml | 600 – 800 L | 2.5 ml / L | - |
| Pineapple (Flowering) | 154 – 205 ml | 600 – 800 L | 0.25 ml / L | Rapid Degradation |
| Coffee (Arabica) | 295 – 395 ml | Standard | Check Label | Rapid Degradation |
| Pomegranate (Defoliation) | - | - | 2.0 – 2.5 ml / L | 135 Days |
| Rubber (Latex Stimulant) | Bark Swab | - | 2.6 ml / L (Swab) | - |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. Always consult the official leaflet for crop-specific water volumes.
How to Apply: Best Practices
- Timing (Coffee): Apply at the "fly picking" stage when 10-15% of berries have naturally ripened.
- Mixing: Use neutral water. Do not mix with Bordeaux mixture or alkaline pesticides. Use plastic or stainless steel tanks (corrosive to iron/copper).
- Coverage: For waxy leaves (like Mango/Pineapple), adding a non-ionic surfactant is recommended for better absorption.
- Safety: Always wear PPE (gloves, mask, goggles). Kripon is acidic and can cause eye damage or skin burns. Wash hands thoroughly after use.
Frequently Asked Questions
1. Is Kripon better than Carbide for ripening?
Yes. Calcium Carbide is banned and hazardous. Kripon (Ethephon) is a legal, regulated plant growth regulator that releases natural ethylene gas, ensuring safe and uniform fruit ripening.
2. What happens if it rains after spraying?
Kripon requires 4 to 6 hours to be fully absorbed by the plant. If it rains immediately after spraying, efficacy will be reduced, and re-application might be necessary.
3. Can I mix Kripon with fungicides?
Avoid mixing with alkaline substances (pH > 8), such as Bordeaux mixture or Lime Sulphur. The high pH causes the ethylene to release instantly in the tank, rendering the spray useless.
4. How do I use it on Rubber trees?
For rubber, do not spray the leaves. Dissolve 26ml in 10 liters of water and lightly brush/swab the bark below the tapping cut. This prevents latex clotting and increases flow.
5. What is the shelf life of the product?
When stored in its original container under ambient conditions, Kripon remains stable for up to two years due to its specialized acidic formulation.
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. Ethephon is corrosive; avoid contact with eyes and skin. Do not induce vomiting if swallowed.
