MySheen

Brown spot disease of primrose and its control

Published: 2024-11-22 Author: mysheen
Last Updated: 2024/11/22, The symptom of primrose brown spot disease: it often occurs in the four seasons. It is caused by Alternaria of the subphylum Alternaria. There are brown spots on the leaves of infected plants. The route of transmission is that conidia are transmitted by wind and rain. Prevention and treatment: spray 70% chlorothalonil wettable powder 1000 times liquid and other fungicides at the initial stage of the disease.

Brown spot of primrose

Symptoms: most of them occur in the spring of the four seasons. It is caused by Alternaria of the subphylum Alternaria. There are brown spots on the leaves of infected plants. The route of transmission is that conidia are transmitted by wind and rain.

Prevention and treatment: spray 70% chlorothalonil wettable powder 1000 times liquid and other fungicides at the initial stage of the disease.

 
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