MySheen

Codonopsis rust

Published: 2024-11-22 Author: mysheen
Last Updated: 2024/11/22, To harm the leaves. The leaf back of the diseased part is slightly raised, that is, the heap of summer spores, which breaks and spreads orange summer spores in the later stage. The disease was the most serious from June to July. Control method: ① removes litter in winter. During the onset of ②, 50% dinitrate powder was sprayed with 200x solution or 97% dichlorodium sodium 400x solution, once every 7 days, for 2 times in a row.

To harm the leaves. The leaf back of the diseased part is slightly raised, that is, the heap of summer spores, which breaks and spreads orange summer spores in the later stage. The disease was the most serious from June to July.

Control method: ① removes litter in winter. During the onset of ②, 50% dinitrate powder was sprayed with 200x solution or 97% dichlorodium sodium 400x solution, once every 7 days, for 2 times in a row.

 
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