TOPRA-1TM
Topramezone 33.6% SC
Technical Content
Complete formulation specifications for Heranba TOPRA-1
| Product Name | TOPRA-1 |
| Brand | Heranba |
| Category | Herbicide |
| Technical Content | Topramezone 33.6% |
| Formulation Type | SC |
| Available Pack Sizes (SKUs) | 15 ML, 30 ML, 60 ML, 75 ML |
Product Description
TOPRA-1 is a highly effective post-emergence herbicide containing Topramezone 33.6% SC, designed for the control of broadleaf weeds and selected grassy weeds in maize. Its advanced HPPD-inhibiting action provides rapid weed bleaching, excellent crop selectivity, and long-lasting weed suppression, helping maize crops grow without early-season weed competition.
Features
Discover what makes TOPRA-1 a trusted choice for farmers across India
- Advanced HPPD-inhibiting herbicide.
- Selective post-emergence weed control in maize.
- Controls broadleaf weeds and selected grassy weeds.
- Rapid visible bleaching symptoms on susceptible weeds.
- SC formulation for accurate and convenient application.
- Excellent crop safety when used as recommended.
- Delivers fast and visible weed control.
- Reduces weed competition during critical crop growth stages.
- Supports healthier maize growth and improved yield potential.
- Effective against difficult broadleaf weeds and grassy weeds.
- Provides reliable weed management in intensive maize cultivation.
- Enhances crop establishment and nutrient utilization.
Uses & Recommended Dosage
Application guidelines for various crops and target pests
| Crop | Target Pest | Recommended Dosage |
|---|---|---|
| CropMaize | Target PestEleusine indica, Digitaria sanguinalis, Dactyloctenium aegyptium, Echinochloa spp., Chloris barbata, Parthenium hysterophorus, Digera arvensis | Recommended Dosage30–40 ml/acre |
Mode of Action
Understanding the mechanism of TOPRA-1
Topramezone inhibits the enzyme 4-hydroxyphenylpyruvate dioxygenase (HPPD), disrupting carotenoid biosynthesis in susceptible weeds. As carotenoids are essential for protecting chlorophyll from photooxidation, treated weeds exhibit characteristic bleaching symptoms followed by chlorophyll destruction, growth arrest, and eventual death.
Frequently Asked Questions
Common queries about TOPRA-1 insecticide
Heranba TOPRA-1 contains Topramezone 33.6% SC, which inhibits the HPPD enzyme in susceptible weeds. This blocks carotenoid formation, leading to rapid bleaching, chlorophyll degradation, and complete weed control.
TOPRA-1 is recommended for maize and effectively controls broadleaf weeds and selected grassy weeds, including Eleusine indica, Digitaria sanguinalis, Dactyloctenium aegyptium, Echinochloa spp., Chloris barbata, Parthenium hysterophorus, and Digera arvensis.
Apply 30–40 ml per acre mixed in 150 litres of water as a post-emergence spray when weeds are young and actively growing.
Topramezone 33.6% SC is used for post-emergence control of broadleaf and grassy weeds in maize, ensuring a weed-free environment during critical crop growth stages.
Yes. Heranba TOPRA-1 is highly selective to maize and provides excellent crop safety when applied according to label recommendations.
The whitening or bleaching effect occurs because Topramezone blocks carotenoid production. Without carotenoids, chlorophyll breaks down in sunlight, causing visible bleaching before weed death.
Farmers can buy Heranba TOPRA-1 online India through authorised Heranba distributors, agri-input retailers, and approved agricultural e-commerce platforms.
TOPRA-1 belongs to the HPPD inhibitors group, offering a unique mode of action, rapid visible weed control, and excellent performance against difficult maize weeds.
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