Rallis Master Fungicide (Metalaxyl 8% + Mancozeb 64% WP)
The Ultimate Dual-Action Shield Against Late Blight, Downy Mildew, and Damping Off.
Rallis Master is a premium fungicide from the trusted house of Tata Rallis. It combines the power of two active ingredients—Metalaxyl (Systemic) and Mancozeb (Contact)—to provide complete protection for your crops. Whether you are fighting Late Blight in potatoes or Downy Mildew in grapes, Master works from the inside out to cure infections and prevent new spread.
Why Choose This Product? Key Benefits
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Rapid Curative Action: Absorbs quickly to stop active fungal growth within 24-48 hours of infection.
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Double-Lock Protection: Mancozeb kills spores on the surface, while Metalaxyl enters the plant to kill hidden fungus.
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Protects New Growth: Systemic action moves upwards, protecting new leaves that emerge after spraying.
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Rainfast Formula: Absorbs within 30-60 minutes, ensuring effectiveness even if it rains shortly after application.
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Phytotonic Effect: Rich in Zinc and Manganese, it makes leaves greener and boosts overall plant health.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Rallis Master |
| Technical Name | Metalaxyl 8% + Mancozeb 64% WP |
| IRAC MoA Code | 4 (Metalaxyl) + M03 (Mancozeb) |
| Chemical Group | Phenylamide + Dithiocarbamate |
| Formulation | Wettable Powder (WP) |
| Toxicity Label | Blue Triangle (Moderately Toxic) |
How It Works: Mode of Action
Rallis Master uses a synergistic approach to defeat fungi locally and systemically.
- Systemic Entry (Metalaxyl): It penetrates the leaf tissue and travels upwards (acropetally). It stops the fungus from producing proteins, halting growth from the inside.
- Contact Shield (Mancozeb): It remains on the leaf surface, forming a toxic barrier that kills fungal spores before they can germinate.
- Resistance Management: By attacking the fungus at multiple sites, it prevents the pathogen from developing resistance, ensuring long-term results.
Note: This dual action acts as "insurance" against bad weather or minor spraying errors.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Grapes | Downy Mildew |
| Potato & Tomato | Late Blight |
| Tobacco & Pepper | Damping Off, Leaf Blight, Foot Rot |
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 (g / Acre) | Water (L / Acre) | Dose (g / Litre) | PHI (Days) |
|---|---|---|---|---|
| Grapes | 1000g (1 kg) | 400 Liters | 2.5g / Liter | 49 |
| Potato / Tomato | 1000g (1 kg) | 300 - 400 Liters | 2.5g / Liter | 49 |
| Mustard | 1000g (1 kg) | 400 Liters | 2.5g / Liter | 56 |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting. Note: Black Pepper requires vine drenching (2.5-5g per vine).
How to Apply: Best Practices
- Timing: Apply protectively (before disease appears) or at the very first sign of "oil spots" or blight. Do not apply late in the season near harvest.
- Mixing (Crucial): This is a Wettable Powder (WP). First, mix the powder with a little water to make a smooth paste (slurry), then add this paste to your spray tank.
- Coverage: Ensure full coverage of the foliage. Agitate (shake/stir) the spray tank frequently to prevent the powder from settling at the bottom.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Do not spray near fish ponds.
Frequently Asked Questions
1. Is Rallis Master curative or preventive?
It is both! Metalaxyl provides curative action (stops existing infection) while Mancozeb provides preventive action (stops new infection).
2. Does it help with plant greenness?
Yes. The Mancozeb component contains Zinc and Manganese, which act as micronutrients, making crops visibly greener and healthier.
3. What happens if it rains after spraying?
Master is rainfast within 30-60 minutes. The systemic part (Metalaxyl) is absorbed into the leaf, so it won't wash off easily.
4. Can I use it on Black Pepper?
Yes, it is excellent for Phytophthora Foot Rot in pepper. Apply as a soil drench (around the roots) and foliar spray before and after the monsoon.
5. How often should I spray?
Do not spray more than 2-3 times per season to prevent resistance. Rotate with other fungicides like Ergon or Captaf.
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.
