Leaf Spot Disease on Mulberry Leaves

Leaf spot is a common fungal disease affecting mulberry leaves, which are vital for silkworm feeding. Left untreated, it can seriously reduce leaf quality and silk production.

Causes

• Fungal pathogens like Cercospora moricola or Phyllosticta moricola
• Warm and humid climatic conditions
• Contaminated soil or water splashes spreading spores

Symptoms

• Small dark brown to black spots on the leaves
• Spots may enlarge and merge, forming blotches
• Premature leaf yellowing and shedding

Impact on Silk Production

Infected leaves lose their nutritional value and palatability, leading to reduced feeding and growth in silkworms. This results in lower cocoon weight and poor silk yield.

Prevention & Management

• Use well-drained, clean planting areas
• Remove and destroy affected leaves regularly
• Spray fungicides (e.g., Mancozeb, Carbendazim) as per local agricultural advice
• Maintain good field hygiene and avoid overcrowding

Regular monitoring and early action are essential to protect mulberry crops from leaf spot disease.