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 premium systemic herbicide containing 2,4-D Amine Salt 58% SL. Unlike volatile ester formulations, this Amine salt variant offers low volatility, making it the safest choice for mixed-cropping zones where drift must be minimized. It effectively eliminates stubborn broadleaf weeds in Wheat, Maize, Sorghum, and Sugarcane without harming the crop.
Best For: Farmers seeking a cost-effective, non-volatile solution for broadleaf weeds like Bathua, Chaulai, and Bindweed.
Why Choose This Product? Key Benefits
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Systemic Action: Absorbed through leaves and roots, it travels to the growing tips to kill weeds from the inside out.
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Low Volatility (Safety): As an Amine Salt, it does not turn into vapor in high heat, protecting nearby sensitive crops (like cotton/vegetables) from vapor drift.
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Broad Spectrum Control: Effectively targets a wide range of tough annual and perennial broadleaf weeds, including sedges.
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High Solubility: The SL formulation mixes effortlessly with water, preventing nozzle clogging and ensuring uniform coverage.
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Economical: Provides high-concentration weed control at a low cost per acre, maximizing your return on investment.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | HPM 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 | Moderately Hazardous (Yellow/Blue Triangle) |
How It Works: Mode of Action
Heera-77 works by mimicking the plant's natural growth hormone (Auxin). However, weeds cannot regulate this "synthetic auxin," leading to a fatal overdose.
- Absorption: The hydrophilic amine salt penetrates the weed leaves and roots, moving into the phloem.
- Translocation: It travels rapidly to the growing points (meristems) of the weed.
- Disruption: It triggers uncontrolled cell division, causing the stem to curl (epinasty) and the vascular system to collapse, starving the weed to death.
Note: Visual symptoms like curling appear within 24 hours, but complete death may take 2-3 weeks.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Wheat | Bathua (Chenopodium), Senji, Gajri, Hiran Khuri |
| Maize & Sorghum | Trianthema (Itsit), Chaulai, Tribulus, Nutgrass |
| Sugarcane | Bindweed (Creeper), Nutgrass (Motha), Morning Glory |
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) |
|---|---|---|---|---|
| Wheat | 340 - 520 ml | 200 - 300 L | ~1.7 ml | 60+ |
| Maize | 344 ml | 200 - 300 L | ~1.5 ml | -- |
| Sugarcane | 2520 ml | 400 L | ~6.3 ml | -- |
| Aquatic / Non-Crop | 1800 - 2900 ml | To Runoff | -- | -- |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
- Timing (Wheat): Apply strictly between 30-35 Days After Sowing (DAS). Earlier sprays can deform ears; later sprays can cause sterility.
- Nozzles: Use Flat Fan or Flood Jet nozzles only. Do not use Hollow Cone nozzles to prevent fine mist drift.
- Weather: Ensure there is no rain forecast for at least 6 hours after application (Amine needs time to absorb). Avoid spraying in high winds (>10 km/h).
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use.
Frequently Asked Questions
1. Can I use Heera-77 on Potato?
No. Potato is a broadleaf crop and extremely sensitive to 2,4-D. Foliar application will kill the crop.
2. What is the difference between Heera-77 and Heera-44?
Heera-77 is an Amine Salt (low volatility, safer for mixed crops). Heera-44 is an Ester (high volatility, risk of vapor drift, but faster action). Use Heera-77 in warmer weather or near sensitive areas.
3. How long until it is rainfast?
Heera-77 requires about 6 hours without rain to be fully effective. If rain is expected sooner, consider adding a sticker/spreader adjuvant.
4. Can I mix it with other herbicides?
Yes, it is often compatible with Isoproturon or Metsulfuron for wheat. However, always perform a small "jar test" first and never mix with highly acidic solutions.
5. Will it kill grassy weeds?
No. Heera-77 is specific to broadleaf weeds (dicots) and sedges. It will not control grasses like Phalaris (Gulli Danda) or Wild Oats.
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.
