Cultural

Symptoms

• Pre-emergence phase : Complete rotting of seedlings.
• Post-emergence phase: Infected tissues become soft and water soaked.
• Seedlings topple over or collapse.

Causal organism Pythium aphanidermatum (Edson) Fitzp.

Mycelium : Non septate, hyaline

Pathogen : Asexual : Zoospores bi-flagellated, thin walled. Resting spores : Oospore.

Survival and Mode of Spread

Primary Survival:

Secondary Spread:

Favourable Conditions

Integrated Disease Management

Chemical

Biological

Source of Information

Acknowledgement