What are the symptoms of diseases and insect pests of Petunia?

Common diseases and insect pests of Petunia include white mold, leaf spot and virus disease, and the control methods are as follows:

1, white mold: at the initial stage of the disease, the diseased leaves should be removed and 75% chlorothalonil should be sprayed 600 ~ 800 times.

2. Leaf spot disease: Be sure to take off the diseased leaves and burn them to prevent damage from strong wind, sun exposure and low temperature. Spray 50% mancozeb 1000 times.

3. Viral diseases: Insecticide should be sprayed in the early stage, and 40% omethoate 1000 times solution should be sprayed. Pay attention to disinfection when you come into contact with diseased plants during planting.