CassavaHigh field risk
Cassava mosaic disease
Cassava mosaic begomoviruses
A viral disease spread mainly through infected cuttings and whiteflies. Early recognition helps protect nearby fields.
Pictorial field guide
Illustrative symptom pattern for physical comparison. Lighting, crop stage and cultivar can change appearance; never diagnose or treat from this picture alone.
Compare several physical signs
Use the diagram to orient a field inspection, then look across multiple plants and both sides of affected leaves before contacting an extension officer.
- Irregular pale green or yellow leaf patches
- Distorted or narrow leaf lobes
- Stunted plants and reduced root formation
Field checks before treatment
- 1Mark and isolate affected plants
- 2Ask a local extension officer whether removal is advised
- 3Use only certified, symptom-free stems for the next planting
Reduce future risk
- Choose locally recommended resistant varieties
- Inspect cuttings before planting
- Control volunteer cassava and monitor whitefly pressure
Irrigation note
Avoid unnecessary leaf wetting. Base irrigation on soil moisture and crop stage, not disease appearance alone.
Open irrigation guideAutomated decision support only. Confirm crop treatments with a qualified extension officer before applying a pesticide, fungicide, removing plants, or changing field treatment. Always follow the product label and local registration rules.