Metiram Fungicide

Product Overview

Active Ingredient: Metiram
CAS Number: 9006-42-2
Classification: Non-systemic contact fungicide belonging to the dithiocarbamate family (similar to Mancozeb)
Primary Use: Preventive control of fungal diseases in fruits, vegetables, cereals, and ornamentals by forming a protective barrier on plant surfaces.

Mode of Action

Mechanism: Inhibits fungal spore germination and disrupts cellular respiration by interfering with multiple enzyme systems in fungal cells.
Action Type: Protective (must be applied before infection occurs); remains on the plant surface without systemic movement.

Target Diseases & Crops

Crops	Target Diseases	Application Rate	Key Timing & Notes
Grapes	Downy mildew, black rot, anthracnose	2–3 kg/ha	Apply preventively; reapply every 7–10 days in high humidity.
Potatoes, Tomatoes	Late blight, early blight, downy mildew	2–3 kg/ha	Use at first sign of disease or as preventive in high-risk conditions.
Cereals (Wheat, Barley)	Leaf rust, powdery mildew, leaf spot	2–4 kg/ha	Apply during early growth stages; reapply based on disease pressure.
Ornamentals	Leaf spot, rust, downy mildew	2–4 kg/ha	Protect plants from infections; reapply as needed.

Formulations & Dosage

Common Formulations:
- Wettable Powder (WP): 70% WP
- Water Dispersible Granules (WG): 80% WG
Application Methods:
- Foliar spray (uniform coverage of plant surfaces).
- Tank mix compatible with other fungicides/insecticides (e.g., copper compounds for enhanced bacterial disease control).

Key Features & Benefits

Broad-Spectrum Efficacy: Controls downy mildew, blight, rust, anthracnose, and other fungal pathogens.
Protective Barrier: Forms a physical barrier on leaves/stems to block fungal entry.
Crop Safety: Non-systemic action reduces risk of phytotoxicity; safe for use across growth stages.
Versatility: Suitable for organic and conventional farming (check local regulations for organic compliance).
Long Residual Protection: Effective for 7–14 days; reapplication frequency depends on weather and disease pressure.

Safety & Handling

Pre-Harvest Interval (PHI): 7–14 days (varies by crop; follow label instructions).
Precautions:
- Wear protective clothing, gloves, and goggles during application.
- Avoid spraying in extreme weather (e.g., heavy rain, high winds).
- Store in cool, dry conditions away from food, water, and heat sources.
Environmental Impact: Low toxicity to mammals; moderate risk to aquatic life (avoid runoff into water bodies).

Packaging & Distribution

Small Packaging: 500g, 1kg, 5kg bags for small-scale users.
Bulk Packaging: 25kg bags, 200L drums, 1000L IBC containers for commercial agriculture.
Global Reach: Exported worldwide; supports OEM/ODM services for custom labeling and formulations.

Technical Specifications

Molecular Formula: C₄H₆N₂S₆Zn·x(C₂H₅NHCS₂)xMn (complex structure with zinc and manganese dithiocarbamate components).
Resistance Management: Rotate with systemic fungicides (e.g., triazoles) to prevent resistance development.

Applications in Agriculture

Grapes: Critical for managing downy mildew in vineyards, especially during humid seasons.
Potatoes & Tomatoes: Essential for blight prevention in cool, wet climates.
Ornamentals: Used in nurseries and gardens to protect flowers and shrubs from leaf spot diseases.

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