alstonia scholaris showing symptoms leaf gall psyllid pauropsylla tuberculata crawf |
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| navigate by keyword : agriculture alstonia apocynaceae bark blackboard crawf damage devil diseasedplant diseases dita gall homopteran india insect insecticide insects japanese leaf leaves pagoda pauropsylla pesticides plant psyllids scholaris tree tuberculata |
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| Alstonia scholaris showing symptoms of leaf gall psyllid `Pauropsylla tuberculata Crawf`. Plant diseases. Parasites. |
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