Rainbow-Boscalid 25.2% + Pyraclostrobin 12.8% Wg
Nichino Rainbow (Boscalid 25.2% + Pyraclostrobin 12.8% WG) is a dual-action fungicide that provides long-lasting protection against major fungal diseases, improving crop quality and yield.
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Rainbow Fungicide (Boscalid 25.2% + Pyraclostrobin 12.8% WG)
Premium Dual-Action Protection for Grapes, Apples, and Vegetables
Rainbow Fungicide is a technologically advanced, broad-spectrum solution designed for modern Integrated Crop Management. By combining two powerful active ingredients—Boscalid and Pyraclostrobin—it offers a "double-lock" mechanism that stops fungal diseases inside and out.
Beyond just killing fungus, Rainbow is famous for its "AgCelence" effect. It improves plant health by reducing stress (ethylene) and boosting photosynthesis, resulting in greener leaves and higher quality produce at harvest.
Why Choose This Product? Key Benefits
- ⏱️Dual-Action Power: Combines Systemic (Boscalid) and Translaminar (Pyraclostrobin) action to kill spores and stop fungal growth simultaneously.
- ?️Broad Spectrum Control: Excellent efficacy against Downy Mildew, Powdery Mildew, Botrytis, Apple Scab, and Early Blight.
- ⏳Long-Lasting Protection: Stays active in the plant system for 10 to 14 days, reducing the number of sprays needed.
- ?️Superior Rainfastness: The high-quality WG formulation sticks to waxy leaves and becomes rainfast within 1 to 3 hours.
- ?The "Greening Effect": Delays aging and keeps leaves green longer, leading to better fruit finish and higher market value.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | Rainbow |
| Technical Name | Boscalid 25.2% + Pyraclostrobin 12.8% WG |
| IRAC MoA Code | Group 7 (Boscalid) + Group 11 (Pyraclostrobin) |
| Chemical Group | SDHI (Carboxamide) + QoI (Strobilurin) |
| Formulation | Water Dispersible Granules (WG) |
| Toxicity Label | Blue/Green (Slightly Toxic - Safe for Applicators) |
How It Works: Mode of Action
Rainbow works by attacking the fungal respiratory system at two different "checkpoints" (Complex II and Complex III), causing energy failure in the pathogen.
- Spore Germination Block (Protectant): Pyraclostrobin sits on the leaf surface and stops spores from germinating, acting as a shield against new infections.
- Mycelial Growth Arrest (Curative): Boscalid penetrates the leaf tissue (systemic action) and halts the growth of fungus that has already entered the plant.
- Stress Reduction (Plant Health): The formulation suppresses ethylene (stress hormone) production, allowing the plant to withstand heat and drought better while focusing on fruit development.
This combination creates a high barrier against resistance development, making it a reliable choice for professional growers.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Grapes | Downy Mildew, Powdery Mildew, Botrytis (Grey Mold) |
| Apple | Powdery Mildew, Apple Scab, Alternaria |
| Tomato, Chilli, Onion | Early Blight, Purple Blotch, Stemphylium Blight |
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 | 240 g | 400 L | 0.6 g | 34 |
| Apple | 300 g | 400 L | 0.75 g | 41 |
| Tomato / Chilli / Onion | 240 g | 200 L | 1.2 g | 10 - 24 |
*PHI = Pre-Harvest Interval: The minimum number of days to wait between the last spray and harvesting.
How to Apply: Best Practices
- Timing: Apply preventively or at the very early stages of disease appearance. For Grapes, the ideal window is Pre-bloom to Fruit Set. For Apples, apply during Pink Bud to Petal Fall.
- Mixing: Fill the spray tank 1/2 with water, add the required quantity of Rainbow granules, and mix well. The WG formulation disperses rapidly without dust.
- Coverage: Ensure thorough coverage of the canopy, especially the undersides of leaves where stomata are located.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Avoid spraying during peak bee foraging hours (mid-day).
Frequently Asked Questions
1. Does Rainbow help with fruit quality?
Yes. The "AgCelence" effect keeps leaves greener for longer, allowing for more food production for the fruit. This results in shinier skin, better size, and improved shelf life.
2. Can I mix Rainbow with other products?
Rainbow is compatible with most common insecticides and fungicides. However, avoid mixing with highly alkaline or acidic substances. Always perform a small jar test before tank mixing.
3. Is it safe for honey bees?
It is considered practically non-toxic to bees upon contact. However, as a precaution, it is recommended to spray in the early morning or late evening when bees are not actively foraging.
4. How many times can I use it in a season?
To prevent resistance, do not use Rainbow more than 2 times per crop season. Always rotate with fungicides from different chemical groups.
5. Does it work on stem blight in Onions?
Yes, Rainbow is highly effective against Purple Blotch and Stemphylium Blight in onions. For best results, use a silicon-based sticker/spreader as onion leaves are waxy.
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.
