What are the three fungicides commonly used for flowers?

Triadimefon is also known as powder rusting? It has preventive, eradicating, and fumigant effects on rust diseases and powdery mildew. It can control apple rust, Populus tomentosa rust, chrysanthemum rust, Carex rust, rose rust, rose powdery mildew, crabapple powdery mildew, cineraria powdery mildew, ivy powdery mildew, and more. For example, when spraying with 25% triadimefon wettable powder, the usual concentration is 3000-4000 times dilution; when spraying with 20% triadimefon emulsifiable concentrate, the usual concentration is 2000 times dilution. In addition, triadimefon also has a certain control effect on flower leaf blight, brown spot disease, leaf spot disease, and more.

Chlorothalonil has a preventive effect on many plant diseases. Chlorothalonil has good adhesion on plant surfaces and is not easily washed off by rain, so it has a relatively long effective period, generally 10 days. However, it has no systemic translocation effect and will not be absorbed from the sprayed parts or root system, so spraying should be uniform and thorough. Usually, spraying with 75% chlorothalonil wettable powder at 600-1000 times dilution can effectively control rose black spot, poplar black spot, chrysanthemum brown spot, peony brown spot, rubber tree anthracnose, clivia anthracnose, cherry brown spot shot hole disease, and more. Chlorothalonil is somewhat irritating to human skin and eyes, and corresponding protective measures should be taken during use.