HPM Heera-77 Herbicide – 2,4-D Amine Salt 58% SL for Broadleaf Weed Control in Wheat, Maize, Sugarcane

HPM Heera-77 is a selective, systemic post-emergence herbicide containing 2,4-D Amine Salt 58% SL (Soluble Liquid). It is designed to control a wide range of annual and perennial broadleaf weeds in major crops like wheat, maize, sorghum, sugarcane, and potato, as well as in non-crop areas and aquatic environments. The amine salt formulation offers low volatility, making it safer to use in mixed-cropping areas compared to ester-based 2,4-D products, as it significantly reduces the risk of vapor drift damaging nearby sensitive crops.

Heera-77 works by mimicking the natural plant growth hormone (auxin), causing uncontrolled and chaotic cell division in susceptible broadleaf weeds. This leads to stem curling (epinasty), leaf withering, vascular system collapse, and eventually the complete death of the weed within 2–3 weeks. The systemic action ensures the herbicide moves from the leaves to the roots, providing thorough control and preventing regrowth. It is absorbed through both foliage and roots, making it effective against established weeds.

This herbicide is a trusted choice for farmers looking for a cost-effective, easy-to-apply solution to reduce weed competition and improve crop yields. It is compatible with flat fan or flood jet nozzles for uniform coverage and dissolves readily in water without clogging equipment.

Key Benefits

• Selective weed control: Targets broadleaf weeds effectively while being safe for grass crops like wheat, maize, and sorghum when used as directed.
• Systemic root kill: Absorbed by leaves and moves to the roots, ensuring complete weed elimination and preventing regrowth.
• Low volatility for safety: The amine salt formulation has low vapor drift risk, making it safer for use near sensitive broadleaf crops like cotton and vegetables.
• Broad spectrum control: Effective against a wide variety of tough annual and perennial broadleaf weeds, including sedges and aquatic weeds like water hyacinth.
• High solubility & easy mixing: The SL formulation dissolves instantly in water, forming a clear solution with no sediment, preventing nozzle clogging.
• Versatile application: Suitable for use in crop fields, non-crop areas (fence lines, industrial sites), and aquatic environments (irrigation channels, ponds).
• Cost-effective: Provides effective weed management at a low cost per acre, helping maximize returns on investment.

How It Works

HPM Heera-77 contains 2,4-D Amine Salt, which belongs to the phenoxycarboxylic acid group of herbicides. Its mode of action is classified as a synthetic auxin (Group O). When applied to the foliage of susceptible broadleaf weeds, the active ingredient is absorbed through the leaves and roots. Once inside the plant, it moves systemically through the phloem to the growing points (meristems) and roots.

The herbicide mimics the plant's natural auxin hormone but at levels the weed cannot regulate. This triggers a "growth overdose" — uncontrolled and rapid cell division in the vascular tissue. This abnormal growth blocks the transport of food and water within the weed. Visible symptoms like stem twisting, curling (epinasty), and leaf drooping appear within days. Over the next 2–3 weeks, the vascular system collapses, roots starve, and the weed dies completely. Because the chemical reaches the root system, the weed is killed thoroughly and does not grow back.

Technical Specifications

Parameter	Details
Brand	HPM Heera-77
Active Ingredient	2,4-D Amine Salt 58% SL
Chemical Group	Phenoxycarboxylic Acid
Mode of Action	Systemic growth regulator (Auxin mimic) – Group O (Synthetic Auxins)
Formulation Type	Soluble Liquid (SL)
Application Stage	Post-emergence
Selectivity	Selective (safe for grass crops)
Toxicity Label	Moderately Hazardous (Yellow/Blue Triangle)
Shelf Life	24 Months
Country of Origin	India

Recommended Dosage & Application

The dosage of HPM Heera-77 varies by crop, target weed, and infestation level. Always follow the dose per acre for accurate results. Use flat fan or flood jet nozzles for even coverage. Do not use hollow cone nozzles as they create fine mist that can cause drift.

Crop	Target Weeds	Dosage (ml/acre)	Water (L/acre)	Dosage (ml/L water)
Wheat	Chenopodium album (Bathua), Asphodelus tenuifolius, Fumaria parviflora (Gajri), Vicia sativa, Melilotus alba (Senji), Spergula arvensis	340–520 ml	200–240 L	~1.5–2.5 ml
Maize	Amaranthus sp. (Chaulai), Trianthema monogyna (Itsit), Tribulus terrestris (Gokhru), Boerhaavia diffusa, Portulaca oleracea, Cyperus sp.	344 ml	160–200 L	~1.5–2 ml
Sorghum	Cyperus iria, Striga sp., Trianthema sp., Tridax procumbens, Digera arvensis, Convolvulus arvensis, Euphorbia hirta, Phyllanthus niruri	400–1200 ml	200–240 L	~2–5 ml
Sugarcane	Trianthema sp., Commelina benghalensis, Striga sp., Cyperus iria, Digitaria sp., Convolvulus arvensis, Amaranthus sp.	500–2520 ml	200–400 L	~2.5–6.3 ml
Potato	Convolvulus arvensis, Portulaca oleracea, Chenopodium album, Anagallis arvensis, Cyperus iria	400–1400 ml	160 L	~2.5–4 ml
Non-Crop Area	Parthenium hysterophorus (Gajar Ghas), Cyperus rotundus (Motha), Tridax procumbens, Euphorbia hirta	500–1800 ml	120–400 L	~4.5 ml
Aquatic Weeds	Eichhornia crassipes (Water Hyacinth), Cyperus iria, Dactyloctenium aegyptium, Portulaca oleracea	340–680 ml	240–280 L	~2–5 ml

General dilution guideline: 2 to 5 ml per litre of water for foliar application, depending on weed type and infestation intensity.

When to Use

HPM Heera-77 is a post-emergence herbicide, meaning it should be applied after the weeds have emerged and are actively growing. For best results, apply during the early stages of weed growth when weeds are small and actively growing (2–4 leaf stage). Weeds are most susceptible at this stage, and the herbicide can be absorbed and translocated more effectively.

For wheat: Apply strictly between 30 to 35 Days After Sowing (DAS). Applying too early can deform crop leaves, while applying too late (after the jointing stage) can reduce grain yield.

For maize and sorghum: Apply during early post-emergence. Use a directed spray towards the soil and weeds, avoiding spraying directly into the crop whorl (funnel) to prevent leaf twisting.

General conditions: Ensure the soil has good moisture at the time of spraying for optimal uptake. Avoid spraying when rain is expected within 6 hours, when wind speeds are high (above 10 km/h), or during extreme heat, as these conditions can reduce effectiveness or cause drift.

Step by Step Usage Instructions

1. Prepare the spray solution: Fill the spray tank half-full with clean water. Add the required dose of HPM Heera-77 based on the crop and weed type. Top up with water and agitate slightly to ensure a uniform solution.
2. Select the right nozzle: Use flat fan nozzles or flood jet nozzles for even coverage. Do NOT use hollow cone nozzles, as they produce a fine mist that increases drift risk.
3. Spray evenly: Apply the solution as a blanket spray, ensuring thorough coverage of weed foliage. For maize and sorghum, use a directed spray towards the base of the crop to avoid spraying into the crop whorl.
4. Apply at the right time: Spray during early post-emergence when weeds are small and actively growing. Follow the recommended timing for each crop (e.g., 30–35 DAS for wheat).
5. Post-application care: Allow at least 6 hours of dry weather after spraying for the herbicide to be absorbed. Avoid entering the sprayed area until the spray has dried completely.
6. Clean equipment: After spraying, thoroughly clean all spray equipment with water to prevent residue buildup.

Precautions & Safety

• Personal Protective Equipment (PPE): Always wear gloves, mask, and goggles while handling and spraying the herbicide. Wear protective clothing to avoid skin contact.
• Handling: Wash hands and exposed skin thoroughly with soap and water after use. Do not eat, drink, or smoke while handling the product.
• Storage: Store in a cool, dry, and well-ventilated area away from food, animal feed, and children. Keep the container tightly closed when not in use.
• Environmental safety: Avoid spray drift onto sensitive broadleaf crops like cotton, vegetables (tomato, okra), and pulses, as even small amounts can cause severe damage. Do not spray near water bodies unless targeting aquatic weeds as per label directions.
• Disposal: Dispose of empty containers as per local regulations. Do not reuse containers for any other purpose.
• First aid: In case of contact with eyes, rinse thoroughly with clean water for 15 minutes. If swallowed, seek immediate medical attention and show the product label to the doctor.

Side Effects & Phytotoxicity

• Potato is a broadleaf crop and is highly sensitive to 2,4-D. Foliar application can damage or kill the crop. Use only as per recommended dosage and method.
• In maize, if the spray enters the crop whorl (funnel), it can cause temporary leaf twisting or deformity. Use a directed spray to avoid this.
• High concentrations or application during extreme heat may cause leaf burn and poor translocation, leading to reduced weed control.
• This herbicide is specific to broadleaf weeds (dicots) and will not control grassy weeds like Phalaris minor (Gulli Danda) or wild oats.

Compatibility

HPM Heera-77 is often tank-mixed with herbicides like Isoproturon or Metsulfuron for broader weed control in wheat. However, always perform a small jar test before mixing to check compatibility. Do not mix with highly acidic chemicals or alkaline solutions. Avoid mixing with products containing sulfur. When tank-mixing, follow the correct mixing order: fill the tank halfway with water, add the adjuvant or compatibility agent first (if needed), then add Heera-77, then add the partner herbicide, and finally top up with water while agitating.

PHI / REI & Storage

Parameter	Details
Pre-Harvest Interval (PHI) – Wheat	60+ days
Pre-Harvest Interval (PHI) – Maize	50–60 days
Pre-Harvest Interval (PHI) – Sugarcane	60+ days
Shelf Life	24 months from date of manufacture
Storage Conditions	Store in a cool, dry, ventilated area away from direct sunlight and moisture

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