Scale Insects
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关于这种疾病
Scale insects are sap-sucking pests with hard shells or waxy coverings that attach firmly to trunks, branches, and leaves. Late detection can severely weaken the tree and often leads to concurrent sooty mold.
主要症状
- White, brown, or black shell-like or cottony deposits are found on trunks, branches, and leaves
- Leaves yellow and leaf drop increases
- Branch dieback occurs and trunk growth stagnates
- Sooty mold may develop concurrently
主要原因
- Poorly ventilated and enclosed placement for the tree
- Overly dense foliage preventing air from reaching the interior
- Spread and dispersal facilitated by ants
- Establishment in hot and dry conditions
预防（栽培环境与日常管理）
Ensure good air circulation around the tree and keep foliage from becoming overly dense through regular pruning. Inspect trunk and branch undersides frequently. Persistent ant activity climbing the trunk may indicate scale insects.
相关图鉴
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建议几天内处理专卖店·园艺可做的处理？
Specialist bonsai nurseries and growers can help identify scale species, guide physical removal techniques, and advise on environmental corrections to prevent re-infestation.
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