MySheen

Cotton boll red rot

Published: 2024-11-22 Author: mysheen
Last Updated: 2024/11/22, Symptoms of cotton boll infected with the initial amorphous disease spot, in wet weather or continuous rain, the disease spread rapidly, throughout the whole boll, some spread to the cotton fiber, producing a uniform pink or light red mildew layer, easy to stick together after rain, become a pink lump, resulting in the disease boll can not crack, cotton fiber rot into a rigid petal, seed infection, the germination rate decreased. The pathogen is the same as cotton seedling red rot. The route of transmission and the conditions of the disease are weak parasitic bacteria, which can not directly infect cotton boll, mainly caused by wound invasion, cotton boll corner spot.

Symptoms of cotton boll infected with the initial amorphous disease spot, in wet weather or continuous rain, the disease spread rapidly, throughout the whole boll, some spread to the cotton fiber, producing a uniform pink or light red mildew layer, easy to stick together after rain, become a pink lump, resulting in the disease boll can not crack, cotton fiber rot into a rigid petal, seed infection, the germination rate decreased.

The pathogen is the same as cotton seedling red rot.

The transmission route and disease conditions are weak parasitic bacteria, which can not directly infect cotton boll, but mainly caused by wound invasion. Cotton boll corner spot, boll blight, boll anthracnose and other disease spots can induce red rot. A large number of conidia on the diseased bolls were transmitted through wind and rain and re-infected many times.

For control methods, see red rot of cotton seedlings.

 
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