Dursban Insecticide
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Crystal Dursban Insecticide (Chlorpyrifos 20% EC)
The trusted "Gold Standard" for Termite Control and powerful crop protection against tough worms.
Dursban 20% EC by Crystal Crop Protection is a broad-spectrum insecticide widely used in Indian agriculture and construction. It effectively targets soil insects like termites and hard-to-kill pests like stem borers and bollworms. Its triple-action formula attacks pests through contact, stomach ingestion, and vapor action, reaching hidden insects that other sprays miss.
Best For: Termite proofing (Pre & Post Construction), Cotton Bollworms, Paddy Stem Borers, and Soil Pests.
Why Choose Dursban? Key Benefits
- ⏱️Triple Action Power: Kills pests via Contact (touch), Stomach (eating), and Fumigation (vapor), ensuring no pest escapes.
- ?️Ultimate Termite Barrier: Creates a long-lasting chemical barrier in the soil that kills termites and prevents future attacks in buildings and fields.
- ⏳Residual Control: Binds tightly to soil particles, offering extended protection against root grubs and soil-dwelling pests without washing away easily.
- ?️Rainfast Formula: Penetrates insect skin and plant surfaces quickly, making it effective even in unpredictable weather conditions.
- ?Cost-Effective Solution: Provides professional-grade pest control at an affordable price per acre compared to newer synthetic alternatives.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Dursban |
| Technical Name | Chlorpyrifos 20% EC |
| IRAC MoA Code | Group 1B (Organophosphate) |
| Chemical Group | Organophosphorus |
| Formulation | Emulsifiable Concentrate (EC) |
| Toxicity Label | Yellow Label (Highly Toxic) |
How It Works: Mode of Action
Dursban works by targeting the nervous system of insects. It inhibits a crucial enzyme called Acetylcholinesterase (AChE).
- Nervous System Attack: Once the insect touches or eats the chemical, Dursban stops the enzyme responsible for calming nerve signals.
- Over-Stimulation: This causes rapid, uncontrolled firing of nerve impulses in the pest.
- Paralysis & Elimination: The insect suffers from tremors and paralysis, leading to death. The vapor action also kills pests hiding in crevices or stem tunnels.
Note: Because it attacks the nervous system, it provides a "Knockdown" effect on varied pests.
Target Crops & Pests
| Crop / Area | Target Pest(s) |
|---|---|
| Cotton | Bollworm Complex (Spotted, Pink), Whitefly, Aphids |
| Paddy (Rice) | Yellow Stem Borer, Leaf Folder, Hispa |
| Sugarcane | Termites, Early Shoot Borer, Black Bug |
| Buildings (Construction) | Subterranean Termites (White Ants) |
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) |
|---|---|---|---|---|
| Cotton | 500 - 1200 ml | 200 - 400 L | 2.5 - 3 ml | 30 |
| Paddy (Rice) | 500 - 750 ml | 200 - 300 L | 2.5 ml | 15 |
| Termite Control | N/A | N/A | 50ml / 1L Water | - |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. Note: Termite dosage is for construction use (1:19 ratio).
How to Apply: Best Practices
- Timing: Apply at the first sign of pest infestation. For termites, treat the soil before laying the foundation or flooring.
- Mixing: Prepare a fresh solution immediately before use. Do not let the mixture stand overnight as it may degrade.
- Coverage: Ensure thorough coverage of foliage. For stem borers, the spray must reach the leaf sheath.
- Safety: Always wear PPE (gloves, mask, goggles). This product contains solvents that can irritate the skin. Wash hands thoroughly after use.
Frequently Asked Questions
1. Is Dursban effective for termites in homes?
Yes, Dursban is a top choice for Anti-Termite Treatment (ATT). It binds to the soil to create a chemical barrier that kills termites on contact or repels them from entering the building structure.
2. Can I use Dursban on vegetables and fruits?
No. As of October 2023, the use of Chlorpyrifos is banned on crops like Citrus, Ber, and Tobacco in India. Avoid use on vegetables meant for immediate consumption due to residue risks.
3. What is the antidote for accidental poisoning?
The specific antidote is Atropine Sulphate (administered by a medical professional), followed by Pralidoxime (2-PAM) if treated early. Immediate medical attention is required.
4. Does it work on Pink Bollworm in Cotton?
Yes, its fumigation (vapor) action allows it to penetrate cotton bolls to some extent. However, for severe resistance, Crystal recommends "Predator" (50% EC) or mixing with other chemistries.
5. What is the difference between Dursban and Predator?
Dursban contains 20% Chlorpyrifos, making it ideal for general pests and termites. Predator contains 50% Chlorpyrifos, a higher concentration designed for severe infestations and tough-to-kill larvae.
Safety & Disclaimer
Always read and follow the instructions on the official product label. The information provided here is for guidance only. Dursban is a yellow-label (Highly Toxic) pesticide. Use personal protective equipment (PPE) during application. Do not use on crops prohibited by the Central Insecticides Board (e.g., Citrus, Ber, Tobacco).
