MySheen

What is the symptom of metasequoia red blight?

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, The symptom of red blight of Metasequoia glyptostroboides is that the disease usually starts from the lower branches and leaves of Metasequoia glyptostroboides, gradually develops and spreads upward, and finally leads to the death of the whole plant. The susceptible branches and leaves produce brown spots at the beginning, then expand into dark brown, and then the branchlets and withered branches turn brown and die. The disease can also spread to green branchlets, forming sunken brown ulcer spots that surround the main stem and cause the upper part to die; or do not surround the main stem, but cannot heal for a long time, with the growth of the main stem, the ulcer sinks deeply into the trunk, forming trench rot, and the young tree base cadres produce irregular grooves and become deformed. Under moist conditions, disease spots

The symptom of red blight of Metasequoia glyptostroboides is that the disease usually starts from the lower branches and leaves of Metasequoia glyptostroboides, gradually develops and spreads upward, and finally leads to the death of the whole plant. The susceptible branches and leaves produce brown spots at the beginning, then expand into dark brown, and then the branchlets and withered branches turn brown and die. The disease can also spread to green branchlets, forming sunken brown ulcer spots that surround the main stem and cause the upper part to die; or do not surround the main stem, but cannot heal for a long time, with the growth of the main stem, the ulcer sinks deeply into the trunk, forming trench rot, and the young tree base cadres produce irregular grooves and become deformed. Under moist conditions, the disease spot produces black dots. It is the fruiting body of the pathogen.

 
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