👉 What is Metalaxyl:
- Metalaxyl was first synthesized in 1979 in the United States and gradually became a popular effective fungicide to treat fungal diseases on plants.
- Metalaxyl belongs to the alanine (acylalanine) group has strong internal absorption and drainage properties, and is especially effective in preventing and treating fungal strains of the Oomycetes group (including Phytophthora and Pythium that cause root rot and upper stem rot diseases)
- According to statistics on the Pesticide list in Vietnam in 2023, more than 40 companies are registered to trade this active ingredient, including single ingredients and mixtures with Mancozeb, Chlorothalonil, Copper Oxychloride, etc.
👉 Mechanism of action:
- Metalaxyl is an active ingredient with powerful internal and circulatory properties, that can penetrate plant tissues in roots, leaves, and bark... and then be transported throughout all parts of the plants, creating enzymes that inhibit protein synthesis, and ribosomal RNA synthesis of fungal cells. Therefore, it is possible to prevent and treat fungal strains in the soil and air.
- In Vietnam, the active ingredient Metalaxy is registered to treat plant diseases such as Fruit rot, scabies, pus leaks on citrus trees (oranges, lemons, grapefruits); downy mildew, powdery mildew on vegetables, and peppers; branch tip rot on dragon fruit; pus leaks and fruit rot on durian and jackfruit trees; rubber scraping facial strip ulcers; dead pepper branch,...
👉 Advantages and disadvantages:
Advantage:
• It has internal absorption and drainage properties, so it can both prevent and treat diseases without direct contact with the fungus.
• Highly effective against the most common fungal strains that cause diseases Phytophthora and Pythium
• Belongs to the low toxicity group (group III) and is almost harmless to livestock, poultry, bees, and fish.
• Quickly absorbed by plants, limited leaching in humid environments or rain
• Short preharvest interval period (PHI): 7 days. Recommended for use in growing and exporting fruits and vegetables.
• Can be combined with many other fungicides, especially when combined with Mancozeb, it will be especially effective in preventing and eliminating fungal diseases.
Defect:
• If used for a long time or arbitrarily changes the recommended dosage, it can cause the formation of resistance (also known as drug resistance or drug tolerance) of fungal pathogens.
• Although it is less toxic, it can cause eye irritation, so you must be fully equipped with protective equipment when using the medicine, especially goggles.
