String Fungicide (Mancozeb 75% WP) - Nichino India
The Ultimate Broad-Spectrum Contact Fungicide for Disease Protection and Greener Crops.
String is a premium contact fungicide formulated by Nichino India, a subsidiary of Japan's Nihon Nohyaku Co. Ltd. It features high-quality Mancozeb 75% WP utilizing Japanese technology to provide a powerful shield against a wide range of fungal diseases.
Why farmers trust String: Unlike generic options, String offers superior particle size for better coverage. It not only stops fungus but also acts as a source of Zinc and Manganese, giving your crop a "Phytotonic" boost—making leaves greener and plants healthier. It is an essential partner for resistance management in Paddy, Potato, Vegetables, and Fruits.
Why Choose This Product? Key Benefits
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Broad-Spectrum Protection: Effectively controls Blast, Blights, Rusts, Leaf Spots, and Mildews across multiple crop types.
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The "Phytotonic" Effect: Provides essential micronutrients (Zinc & Manganese) that correct deficiencies and result in visibly greener, healthier leaves.
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Resistance Manager: Ideal tank-mix partner for systemic fungicides. It prevents fungus from developing resistance to high-cost chemicals.
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Superior Rainfastness: The high-quality WP formulation sticks firmly to the leaf surface, resisting wash-off from light rains or irrigation.
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Green Label Safety: Classified as "Slightly Toxic" (Green Label), making it safer for the applicator and beneficial insects compared to harsher chemicals.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand Name | String |
| Technical Name | Mancozeb 75% WP |
| IRAC MoA Code | M3 (Multi-Site Contact Activity) |
| Chemical Group | Dithiocarbamate |
| Formulation | Wettable Powder (WP) |
| Toxicity Label | Green Label (Slightly Toxic) |
How It Works: Mode of Action
String acts as a multi-site contact fungicide. It remains on the leaf surface and releases Isothiocyanates, which are toxic to fungi.
- Inhibits Respiration: It blocks the enzyme activity in the Krebs cycle, effectively shutting down the fungus's energy production (ATP).
- Halts Germination: It forms a protective coating on the leaf. When fungal spores land, String prevents them from germinating and penetrating the plant tissue.
- Disrupts Cell Structure: It interferes with lipid metabolism and amino acid production, destroying the fungal cell membrane integrity.
Because it attacks multiple sites, it is very difficult for fungi to develop resistance against String.
Target Crops & Pests
| Crop | Target Pest(s) |
|---|---|
| Paddy (Rice) | Blast (Leaf & Neck Blast) |
| Potato & Tomato | Late Blight, Early Blight, Buckeye Rot |
| Chilli | Fruit Rot (Anthracnose), Leaf Spot |
| Wheat | Brown Rust, Black Rust, Leaf Blight |
| Grapes & Apple | Downy Mildew (Grape), Scab (Apple) |
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 (gm / Acre) | Water (L / Acre) | Dose (gm / Litre) | PHI (Days) |
|---|---|---|---|---|
| Paddy / Wheat | 600 - 800 g | 200 L | 3 - 4 g | 25 - 30 |
| Vegetables (Potato, Tomato, Chilli) | 600 - 800 g | 200 L | 3 - 4 g | 7 - 10 |
| Fruit Crops (Apple, Grape) | 600 - 800 g | 300 - 400 L | 2 - 3 g | 30 - 60 |
*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 (before disease appears) or at the very first sign of disease. String is a protectant, not a cure for established deep infections.
- Mixing: Use the "WALES" method. Pre-mix the powder with a little water to make a slurry before adding it to the main tank. It mixes well with most insecticides.
- Coverage: Ensure complete coverage of the upper and lower leaf surfaces. The disease cannot be controlled if the spray doesn't touch the fungus.
- Safety: Always wear PPE (gloves, mask, goggles). Wash hands thoroughly after use. Do not use on water bodies or aquaculture ponds.
Frequently Asked Questions
1. Is String a systemic fungicide?
No, String is a contact fungicide. It stays on the leaf surface and prevents fungal spores from entering the plant. It is best used as a preventive shield.
2. Can I mix String with other chemicals?
Yes, String is compatible with most common insecticides and systemic fungicides (like Carbendazim or Metalaxyl). However, DO NOT mix with alkaline products like Bordeaux mixture or Lime Sulphur.
3. Why do my plants look greener after spraying String?
This is the "Phytotonic Effect." String contains Zinc and Manganese, which are essential micronutrients. The plant absorbs these through the leaves, leading to greener foliage and better photosynthesis.
4. Can I use String on Guava or Jowar?
No. According to recent Government of India regulations (S.O. 4294 E), the use of Mancozeb is prohibited on Jowar, Guava, and Tapioca. Please strictly follow these guidelines.
5. What is the rainfastness of String?
String has excellent sticking properties. However, for best results, allow at least 3-4 hours of dry weather after spraying. If it rains immediately, re-application may be necessary.
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. Compliance Note: Ensure you are not applying this product on prohibited crops (Jowar, Guava, Tapioca) as per the latest CIB&RC regulations.
