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Dimethomorph is a highly effective selective systemic fungicide with a specific control spectrum, primarily targeting Oomycete diseases (such as downy mildew, late blight, etc.). Its core mechanism of action is to inhibit the biosynthesis of pathogen cell walls, thereby blocking spore germination and mycelial growth.
CAS Number:
Ingredient Content:Dimethomorph 50% WP/96% TC
Product Appearance:Grayish-white powder
Visit Volume:133
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Dimethomorph is a highly effective, selective systemic fungicide specifically designed to combat Oomycete diseases such as downy mildew and late blight. It works by disrupting the formation of pathogen cell walls, effectively preventing spore germination and fungal growth. Its unique mode of action ensures a very low risk of resistance, making it ideal for long-term disease management. Suitable for cucumbers, grapes, potatoes, and other high-value crops, Dimethomorph offers reliable and sustainable crop protection.

Appearance: Grayish-white powder
pH (1% aqueous solution): 6.0–8.0
Fineness (50% WP): ≥98% passes through 325-mesh sieve
Suspensibility (50% WP, 25℃): ≥70%
Moisture Content (50% WP): ≤5%
Thermal Stability: ≤5% decomposition at 54℃ ± 2℃ for 14 days
Storage Stability: Over 2 years when kept in a cool, dry, well-ventilated place
| Crop | Target Disease | Dilution Ratio | Application Method |
|---|---|---|---|
| Cucumber | Downy mildew | 800× | Foliar spraying |
| Potato | Late blight | 600–800× | Foliar spraying |
| Grape | Downy mildew | 800× | Foliar spraying |
Tips: Apply at the first sign of disease or as a preventive treatment. Ensure even coverage for optimal results.
| Product | Active Ingredient | Formulation | Packaging |
|---|---|---|---|
| Dimethomorph 50% WP | 50% | Wettable Powder | 100g / 500g bag |
| Dimethomorph 96% TC | 96% | Technical Concentrate | Custom packaging |
Targeted Disease Control: Highly effective against downy mildew, late blight, and other Oomycete pathogens
Low Resistance Risk: Unique mode of action minimizes the likelihood of pathogen resistance even with long-term use
Long Residual Effect: Protects crops for 10–14 days, reducing application frequency and labor costs
Strong Systemic Translocation: Absorbed via leaves and transported throughout the plant for uniform protection
Good Formulation Compatibility: Can be mixed with most non-alkaline pesticides for immediate use
High Crop Safety: Safe for cucumbers, grapes, potatoes, and other treated crops at recommended doses
Harmful to aquatic organisms; avoid contamination of water sources
Wear protective gloves, masks, and clothing during application
Store in a cool, dry, ventilated area away from food, feed, and children
Follow local regulations for transportation, handling, and disposal