Scale Insects
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关于这种疾病
Shell-like insects that attach to stems and leaves and feed by sucking plant sap. Their honeydew secretions can trigger sooty mold, causing both aesthetic damage and plant weakening.
主要症状
- Brown, white, or gray shell-like bumps may be found fixed to stems and leaves
- Leaves and stems may feel sticky to the touch from honeydew secretions
- A black sooty coating (sooty mold) may appear on leaf surfaces
- Leaves may yellow and fall, and the plant may gradually weaken
主要原因
- Introduction of adults or crawlers on newly purchased plants or soil
- Proliferation in poorly ventilated indoor environments
- Crowded planting with no natural predators present
- Late detection due to infrequent inspection of stems and leaf undersides
预防（栽培环境与日常管理）
Regularly inspect stems and leaf undersides for early detection. Newly purchased plants should be quarantined before placing them near others. Avoid crowding and ensure good airflow around plants.
相关图鉴
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Specialist nurseries and growers can help identify the scale species, assess the severity of infestation, and advise on corrective environmental measures such as reducing plant density and improving air circulation.
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