Thread blight

This disease is seen in monsoon season usually in fields under heavy shade. There are two types of thread blight;

White thread blight(Maramius pulcherima)

 Symptoms

• Fine white fungal threads traverse along the underneath of leaves in a fan shaped or irregular manner causing blight.
• The dried up leaves with mycelium form a major source of inoculum for the spread of the disease.

Horse hair blight (Marasmius equicrinus)

 Symptoms

• Fine black silky threads of the fungus form a loose network on the stem and leaves.
• These strands cause blight of leaves and stem.
• These threads hold up detached leaves giving bird’s nest like appearance when viewed from a distance

Management

• Strict phytosanitation
• Adopt proper shade regulation
• Adopt proper cultural practices
• In severely affected gardens spray 1% Bourdeaux mixture

Chemical Control

Extremely Toxic

Highly Toxic

Moderately Toxic

Slightly Toxic