HAVON (ADAMA)
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Havon Herbicide (Bentazone 480 SL) - Complete Crop Protection Guide
Protect your yield and eliminate tough competition with Havon, a highly effective post-emergence herbicide manufactured by ADAMA India.
Specially formulated for transplanted rice (paddy) and soybean crops, Havon selectively targets and rapidly destroys broadleaf weeds and sedges that steal vital nutrients, sunlight, and moisture from your harvest.
Available in a convenient 800ml package perfectly calibrated for one acre of application, it is the ultimate tool for fast-acting, crop-safe field sanitation.
Why Choose Havon Herbicide? Key Benefits
- ⏱️Fast-Acting Results: Visibly destroys weed cellular structures in just a few days by blocking photosynthesis and causing rapid oxidative stress.
- 🛡️100% Crop Safety: Rice and soybean plants have natural enzymes that easily neutralize the formula, keeping your primary crops completely unharmed.
- ⏳Perfect for Early Intervention: Delivers maximum kill rates when applied at the critical 2-3 leaf stage before weeds can establish deep roots.
- 🌧️Soluble Liquid (SL) Superiority: Dissolves instantly and uniformly in water, preventing clogged spray nozzles and ensuring accurate dosage on every leaf.
- 🌿Excellent Tank-Mix Compatibility: Easily mixes with other herbicides to fight mixed weed populations and prevent herbicide resistance.
Havon Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Havon (by ADAMA India) |
| Technical Name | Bentazone 480 SL (71% Technical Content) |
| Herbicide MoA Classification | Photosystem II (PSII) Inhibitor |
| Chemical Group | Benzothiadiazinone / Thiazole derivative |
| Formulation | Soluble Liquid (SL) - Highly water soluble |
| Toxicity Label | Category 4 (Moderately Toxic - PPE required) |
How Havon Works: Advanced Mode of Action
Havon utilizes a highly targeted biochemical process to eliminate aggressive weeds while preserving your crops:
- Rapid Absorption: When sprayed onto actively growing weeds, the liquid formula penetrates the thin cuticular defense of young leaves.
- Photosynthesis Blockade: The active ingredient (Bentazone) migrates to the chloroplasts and aggressively blocks the weed's ability to turn sunlight into energy (electron transport blockade).
- Cellular Destruction: Because the sunlight energy cannot be processed, it turns into volatile Reactive Oxygen Species (ROS). These act like biological wrecking balls, rapidly destroying the weed's cell membranes, causing it to dry out, turn brown, and die.
Why do crops survive? Soybean and rice plants contain natural enzymes (cytochrome P450) that rapidly break down and safely neutralize the chemical before it can cause any damage.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Transplanted Rice (Paddy) | Broadleaf Weeds & Sedges |
| Soybean | Broadleaf Weeds & Sedges |
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 | 800 ml | 150 - 200 L | 4 - 5 ml | Refer to Local Label |
| Soybean | 800 ml | 150 - 200 L | 4 - 5 ml | Refer to Local Label |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. Note: 800 ml perfectly treats exactly 1 Acre of land.
How to Apply Havon: Agronomic Best Practices
- Timing is Everything: Apply exclusively at the 2-3 leaf stage of the weeds. Older weeds with deep roots and thick leaves may survive.
- Weather Conditions: Always spray on a bright, sunny day. Havon needs sunlight to trigger the chemical reaction that kills the weed. Do not spray in dry or heavily overcast weather.
- Soil Moisture & Water Management: For soybeans, ensure the soil is moist before spraying. For transplanted rice, you must completely remove standing water from the paddy before spraying so the chemical directly hits the weeds. You can restore water levels safely after the chemical has dried.
- Safety First: Always wear full PPE (chemical-resistant gloves, mask, goggles, protective clothing). Wash hands and face thoroughly with soap and water immediately after use.
Frequently Asked Questions (FAQs)
1. When is the exact right time to spray Havon?
For maximum kill rates, spray when the target sedges and broadleaf weeds are young—specifically at the 2 to 3 leaf stage.
2. Can I apply this herbicide in a flooded rice paddy?
No. You must drain the standing water out of the paddy field before spraying to ensure the liquid fully coats the weed leaves. Water can be reintroduced after the spray has dried.
3. How much Havon do I need for 1 Acre of land?
The standard recommended dose is 800 ml per acre (which equates to 2 Liters per hectare). The 800ml bottle size is perfectly engineered for single-acre applications.
4. Will this chemical damage my soybean crop?
No, it is highly selective. Soybean and rice plants naturally contain special enzymes that break down the herbicide safely, protecting your crop yield.
5. Is sunlight required for this herbicide to work?
Yes. The active ingredient (Bentazone) requires active sunlight to create the oxidative stress that ultimately destroys the weed cells. Always apply on sunny days.
Safety & Regulatory Disclaimer
Always read and strictly follow the instructions on the official product label before use. Havon contains bentazone, which is harmful to aquatic life and moderately toxic to humans. Never allow runoff into public waters or irrigation canals. The information provided here is for guidance only. Use full personal protective equipment (PPE) during mixing and application.