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The symptoms on the leaf are related to powdery mildew symptoms that are caused by a fungus. The pathogen is favored by high humidity and low sunlight.
Remove the infected parts and dispose of them properly. Avoid irritating the trees by sprinkler and provide proper nutrition to trees to withstand powdery mildew infection. If the disease is severe, apply suitable fungicides.
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Posted by: Rimnoma Serge Ouedraogo
Posted: September 3, 2020