What bactericide is good for brown spot disease?

Conventional fungicides such as ethylicin, triadimefon, chilblain+garlic oil, thiophanate-methyl and propiconazole emulsion in water can also be used to control brown spot.

1, ethylicin.

Ethylicin has a significant bactericidal effect, because it contains some chemical elements that can destroy the metabolism of germs, thus inhibiting germs.

2. Triadimefon.

The basic principle of triadimefon sterilization system is very complicated, which mainly inhibits the production of ergosterol by microorganisms, thus inhibiting or affecting the growth and development of attached spores and haustorium, the growth and development of fungi and the production of spores.

3, frost bell+garlic oil.

Mix the frost bell and garlic oil with proper amount of water and spray them, or spray them alternately with 25% diacetylbenzamide EC and other drugs.

4, thiophanate methyl.

Thiophanate-methyl is a low-toxic broad-spectrum systemic fungicide. Its name is thiophanate methyl, and people also call it methyl. Developed by Japan Kusada Co., Ltd., Methylene can control many plant diseases, and its internal absorption is stronger than carbendazim. According to its chemical structure, thiophanate-methyl belongs to substituted benzene preparation. Thiophanate-methyl was absorbed by plants and transformed into carbendazim, which mainly interfered with the hypha formation of pathogenic bacteria, affected the cell division of pathogenic bacteria, made the cell wall toxic and deformed the bud tube of spore germination, thus killing pathogenic bacteria.

5. Propiconazole emulsion in water.

The control effect of 25% propiconazole emulsion in water on apple brown spot was 8 1.49%.