Heera -77
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HPM Heera-77 Herbicide (2,4-D Amine Salt 58% SL)
The "Diamond Standard" for Safe & Effective Broadleaf Weed Control.
HPM Heera-77 is a powerful, selective systemic herbicide designed to eliminate tough broadleaf weeds (dicots) in crops like Wheat, Maize, Sorghum, and Sugarcane. Formulated as a soluble liquid (Amine Salt), it offers a crucial advantage over older ester formulations: Low Volatility. This means it stays where you spray it, significantly reducing the risk of vapor drift damaging nearby sensitive crops like cotton or vegetables.
Best For: Farmers looking for a cost-effective solution to control weeds like Bathua, Chaulai, and Bindweed without clogging nozzles or risking crop safety.
Why Choose This Product? Key Benefits
- ⏱️Systemic Root Kill: Absorbed through leaves and moves to the roots, ensuring the weed is killed completely and does not grow back.
- ?️Maximum Safety (Low Volatility): Unlike 2,4-D Ester, this Amine formulation does not turn into vapor in heat, making it safer for mixed-cropping areas.
- ⏳Broad Spectrum Control: Effectively controls a wide variety of annual and perennial broadleaf weeds, including sedges (motha) and aquatic weeds.
- ?️High Solubility: Dissolves instantly in water to form a clear solution. No sediment, no nozzle clogging, and easy tank mixing.
- ?Crop Safe Selectivity: Advanced enzymes in crops like Wheat and Maize detoxify the chemical rapidly, keeping your crop safe while weeds perish.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Heera-77 |
| Technical Name | 2,4-D Amine Salt 58% SL |
| IRAC MoA Code | Group O (Synthetic Auxins) |
| Chemical Group | Phenoxycarboxylic Acid |
| Formulation | Soluble Liquid (SL) |
| Toxicity Label | Yellow / Blue (Moderately Hazardous) |
How It Works: Mode of Action
Heera-77 works by mimicking the plant's natural growth hormone (Auxin). When weeds absorb it, it triggers a "growth overdose."
- Absorption & Translocation: The liquid penetrates the leaves and travels through the phloem to the growing tips and roots.
- Uncontrolled Growth: It forces the weed cells to divide rapidly and chaotically, blocking the transport of food and water.
- System Collapse: The weed stems curl and twist (epinasty), the roots starve, and the plant dies within 2-3 weeks.
Note: Visual symptoms like curling appear within days, but total death takes time as the root system is destroyed.
Target Crops & Pests
[Image of Chenopodium album broadleaf weed]| Crop | Target Pest(s) |
|---|---|
| Wheat | Bathua (Chenopodium), Senji (Melilotus), Gajri (Fumaria), Hiran Khuri (Bindweed) |
| Maize & Sorghum | Chaulai (Amaranthus), Itsit (Trianthema), Gokhru (Tribulus), Nutgrass/Motha (Cyperus) |
| Sugarcane | Creepers like Morning Glory, Bindweed, and Nutgrass (Cyperus rotundus) |
| Non-Crop / Aquatic | Parthenium (Gajar Ghas), Lantana, Water Hyacinth |
Dosage & Application Guide
The Golden Rule: Always follow the "Dose per Acre" for accurate results. Using Flat Fan nozzles is mandatory for even coverage.
Dosage per Acre, Litre, & Pre-Harvest Interval (PHI)
| Crop | Dose (ml / Acre) | Water (L / Acre) | Dose (ml / Litre) | PHI (Days) |
|---|---|---|---|---|
| Wheat | 340 – 520 ml | 200 – 400 L | ~1.5 – 2.5 ml | 60+ |
| Maize / Sorghum | 344 – 1200 ml* | 200 – 300 L | ~1.5 – 4 ml | 60+ |
| Sugarcane | 2520 ml | 300 – 400 L | ~6 – 8 ml | 60+ |
| Non-Crop Area | 1800 ml | 400 L | ~4.5 ml | N/A |
*Note: Maize typically requires lower doses (approx 344ml) compared to Sorghum. Always conduct a directed spray in Maize/Sorghum to avoid spraying directly into the crop whorl.
How to Apply: Best Practices
- Timing (Wheat): Apply strictly between 30 to 35 Days After Sowing (DAS). Applying too early can deform leaves; applying too late (after jointing) can reduce grain yield.
- Mixing: This is an SL formulation. Fill the tank half with water, add the required dose of Heera-77, and then top up with water. Agitate slightly.
- Coverage: Use Flat Fan Nozzles or Flood Jet nozzles. Do NOT use hollow cone nozzles (fine mist) as they cause drift. Ensure the soil has good moisture at the time of spraying.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Do not mix with highly acidic chemicals.
Frequently Asked Questions
1. What is the difference between Heera-77 (Amine) and Heera-44 (Ester)?
Heera-77 (Amine) is water-soluble and has low volatility (low drift risk), making it safer for warm weather and mixed-cropping areas. Heera-44 (Ester) is oil-soluble and volatile, which penetrates weeds faster but poses a high risk of vapor drift to nearby sensitive crops.
2. Is Heera-77 rainfast?
Heera-77 is rainfast after approximately 6 hours. Since it is water-soluble, it needs time to be absorbed by the leaf. If rain is expected immediately, consider using a sticker/spreader adjuvant.
3. Can I use this on Cotton or Vegetables?
NO. Cotton, vegetables (like tomato, okra), and pulses are highly sensitive broadleaf crops. Even a small amount of drift will severely damage or kill them.
4. Can I mix Heera-77 with other herbicides?
Yes, it is often tank-mixed with Isoproturon or Metribuzin for wider weed control. However, always perform a small compatibility test first and avoid mixing with highly acidic products.
5. Why are my Maize leaves twisted after spraying?
This happens if the spray goes directly into the "whorl" (funnel) of the maize plant. Always use a "directed spray" towards the soil/weeds and avoid spraying over the top of the maize crop.
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 spraying on windy days to prevent drift.
