Crystal M-45 Fungicide – Mancozeb 75% WP, Broad-Spectrum Contact Fungicide for Multiple Crops

Crystal M-45 is a trusted broad-spectrum contact fungicide from Crystal Crop Protection Ltd. containing Mancozeb 75% WP (Wettable Powder). It belongs to the Dithiocarbamate chemical group and works through a multi-site contact action that inhibits spore germination in fungal pathogens. This fungicide is widely used by Indian farmers for preventive disease management across a large number of crops including wheat, paddy, maize, jowar, potato, tomato, chilli, beans, cucurbits, groundnut, soybean, sunflower, and grapes.

Crystal M-45 is effective against a wide range of fungal diseases such as black rust, yellow rust, downy mildew, early blight, late blight, buck eye rot, leaf spot, and tikka disease. Because of its multi-site mode of action, the risk of fungal resistance development is very low, making it a reliable choice for regular preventive sprays. Additionally, Mancozeb supplies essential micronutrients like manganese and zinc to the crop, which helps keep plants greener and more resilient. It can be used as a foliar spray, seed treatment, and nursery drench, and it works well in tank mixes with many systemic fungicides for enhanced disease control.

Key Benefits

• Multi-site contact action – Inhibits spore germination at multiple sites, making it very difficult for fungi to develop resistance.
• Broad-spectrum disease control – Effective against rusts, blights, downy mildew, leaf spots, tikka, and buck eye rot across many crops.
• Preventive protection – Best used before disease onset to create a protective barrier on leaves, stems, and fruits.
• Supplies micronutrients – Contains manganese and zinc that support greener, healthier plants and better crop vigour.
• Low resistance risk – Multi-site action ensures long-term effectiveness even with repeated use.
• Versatile application – Suitable for foliar spray, seed treatment, and nursery drenching.
• Compatible with systemic fungicides – Can be tank-mixed for improved curative and protective control.

How It Works

Crystal M-45 contains Mancozeb, a multi-site contact fungicide from the Dithiocarbamate group. When sprayed on the crop, it forms a protective layer on the plant surface. The active ingredient works by inactivating sulphydryl (SH) groups present in fungal enzymes. These enzymes are essential for the fungus's metabolic processes and energy production. By disrupting these enzymes, Mancozeb stops the fungus from germinating and growing further. Since it acts at multiple sites within the fungal cell, the pathogen finds it extremely difficult to develop resistance. This makes Crystal M-45 an excellent choice for preventive disease management programs. It does not move inside the plant (non-systemic), so thorough and uniform coverage of all plant parts is important for best results.

Technical Specifications

Parameter	Detail
Brand	Crystal M-45
Manufacturer	Crystal Crop Protection Ltd.
Technical Name	Mancozeb 75% WP
Chemical Group	Dithiocarbamates
Mode of Action	Contact, multi-site action – inhibits spore germination
Formulation	Wettable Powder (WP)
Available Packing	500 gm, 1 Kg

Recommended Dosage & Application

Crop	Target Disease	Dosage per Acre	Dilution
Wheat	Black Rust, Yellow Rust	600–800 gm	200–400 L water per acre
Paddy	Blast	600–800 gm	200–400 L water per acre
Maize	Leaf Spot	600–800 gm	200–400 L water per acre
Jowar	Rust, Leaf Spot	600–800 gm	200–400 L water per acre
Potato	Early Blight, Late Blight	600–800 gm	200–400 L water per acre
Tomato	Late Blight, Leaf Spot, Buck Eye Rot	600–800 gm	200–400 L water per acre
Chilli	Leaf Spot, Die-back	600–800 gm	200–400 L water per acre
Beans	Rust, Leaf Spot	600–800 gm	200–400 L water per acre
Cucurbits	Downy Mildew, Leaf Spot	600–800 gm	200–400 L water per acre
Groundnut	Tikka Leaf Spot, Rust	600–800 gm	200–400 L water per acre
Soybean	Rust, Leaf Spot	600–800 gm	200–400 L water per acre
Sunflower	Rust, Leaf Spot	600–800 gm	200–400 L water per acre
Grapes	Downy Mildew, Anthracnose	600–800 gm	200–400 L water per acre

Seed treatment: Mix 3 g of Crystal M-45 per kg of seed. Coat evenly and sow.

When to Use

Crystal M-45 is a preventive fungicide, so it works best when applied before disease symptoms appear or at the very first signs of infection. For most crops, the first spray should be timed during the active vegetative growth stage or before the onset of favourable conditions for disease (such as high humidity, rainfall, or fog). For crops like potato and tomato, apply before the appearance of blight symptoms. For grapes, apply during the active growth phase to protect against downy mildew and anthracnose. For groundnut, apply during pre-flowering to pod filling stages to manage tikka leaf spot and rust. Repeat applications at 10–15 day intervals if disease pressure is high or weather conditions remain favourable for disease development.

Step by Step Usage Instructions

1. Prepare: Wear protective gloves, mask, and clothing before handling the product.
2. Measure: Take the correct dose (600–800 gm per acre) based on your crop and area.
3. Mix: Fill the spray tank halfway with clean water. Add the required amount of Crystal M-45 powder and stir well to make a uniform slurry. Then fill the tank with the remaining water and mix thoroughly.
4. Spray: Apply the mixture uniformly on the crop using a knapsack or power sprayer. Ensure complete coverage of all plant parts, especially the undersides of leaves.
5. Water volume: Use 200–400 litres of water per acre depending on crop canopy size and growth stage.
6. Timing: Spray during early morning or late evening when wind is low and temperature is moderate. Avoid spraying in strong wind, rain, or extreme heat.
7. Clean up: Wash spray equipment thoroughly after use. Do not empty leftover mixture into water bodies.

Compatibility

Crystal M-45 (Mancozeb 75% WP) is compatible with most commonly used systemic fungicides and insecticides. It is often tank-mixed with systemic fungicides for better curative and protective disease control. However, do not mix with strongly alkaline substances or sulfur-based products. Always perform a small jar test before mixing with new products to check for physical compatibility.

Precautions & Safety

• Wear gloves, mask, and protective clothing while handling and spraying.
• Avoid inhaling the dust or spray mist.
• Do not eat, drink, or smoke during application.
• Store in a cool, dry place away from children, food, and animal feed.
• Prevent spray drift to water bodies, ponds, and non-target areas.
• Avoid application during strong wind or rain.
• Wash hands and exposed skin thoroughly with soap and water after use.
• In case of accidental ingestion, seek immediate medical attention. There is no specific antidote – treat symptomatically.