Tomato Fasarium Wilt

Tomato Diseases

Fasarium Wilt

• Clearing of the veinlets and yellowing of the lower leaves.
• Younger leaves die in succession.
• Petiole and leaves droop and wilt.
• Browning of vascular system.
• Entire plant wilt and die.

• Causal Organism: Fusarium oxysporum f.sp. lycopersii (Sacc.) W.C. Snyder and H.N. Hansen

• Asexual spores: Microconidia, Macroconidia and Chlamydospore

• Macroconidia: Three to five cells with pointed or curved edges

• Chlamydospores: Single or in pairs

• Survival and Mode of Spread

> Survival: In soil as mycelium and chlamydospores> Primary spread: Infected debris> Secondary spread: Water and planting equipment

• Favourable conditions: Dry weather (high soil temperature) and low soil moisture.

• Soil solarization.
• Crop rotation.
• Removal of infected plant.
• Seed treatment with Trichoderma asperellum (viride) @ 4g/kg seeds.