Reniform Nematodes on fiddle leaf fig
What's Happening
Ficus lyrata is identified as a good host for reniform nematodes (Rotylenchulus reniformis), supporting population densities equal to or greater than Rutgers tomato with reproduction factors exceeding 1.0. Two primary inoculum sources for greenhouse infestation are canal water and rooted cuttings from external sources. The nematode infects through the root system, compromising the plant's ability to uptake water and nutrients, leading to decline symptoms that mimic overwatering or root rot.
How to Fix It
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1. Inspect roots: Gently unpot and examine for galls, swellings, or root deformation—healthy roots are white/cream and uniform
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2. Confirm diagnosis: Submit soil/root sample to diagnostic lab for nematode extraction and identification
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3. Isolate infected plants: Remove from collection immediately to prevent spread via shared water sources
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4. Disposal: Destroy severely infected plants—do not compost or propagate
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5. Soil treatment: For valuable specimens, apply approved nematicides according to label instructions; repot in sterile soil
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6. Preventive care: Apply beneficial nematodes (Steinernema feltiae) as biological control in high-risk greenhouse settings
How to Prevent It
Quarantine all new plants for 30 days. Inspect root systems before introducing to collection—look for nematode galls or unusual swellings. Source plants only from certified nematode-free growers. Never use canal water or unfiltered water sources for irrigation. Use sterile potting media and sanitize all propagation tools between plants.
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