What is longan crown gall disease? Understanding this disease in one article
What is longan crown gall disease? How should it be prevented and controlled? Longan crown gall disease is a newly discovered disease on longan trees. When branches and trunks are affected, it causes premature tree decline. 1. Symptoms: In the early stage of infection, small protrusions appear on the affected branches and trunks, which gradually enlarge to form tumors with a rough or uneven surface and a suberized texture....
What is longan crown gall disease? How should it be prevented and controlled?
Longan crown gall disease is a newly discovered disease on longan trees. When branches and trunks are affected, it causes premature tree decline.
1. Symptoms
In the early stage of infection, small protrusions appear on the affected branches and trunks, which gradually enlarge to form tumors with a rough or uneven surface and a suberized texture.
2. The pathogen is still unknown.
3. Prevention and control methods
On the basis of good orchard sanitation, spray a full application of 1:2:200 Bordeaux mixture once before the spring flush emerges. After a typhoon passes and after fruit harvest, also spray Bordeaux mixture once to protect the tree and prevent the pathogen from invading.
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