Symptom

• Initiallychlorotic yellow spot appear on the infected leaves
• Later spot turn into distinct necrotic purple spot with yellow halo.
• Necrotic streaks are produced on the petiole.
• Bud and flower productions are reduced.
• Severe infection resulted in drying of squares.

Survival and Mode of Spread

• Virus survives in alternate hosts.
• Primary spread is From infected plants.
• The virus is transmitted by Thrips (Thrips tabaci).

Favourable Conditions

• Minimum temperature, High relative humidity with leaf wetness.

Management

• Remove infected plants and other host plants.
• Periodical weeding should be done.
• Seed treatment with imidacloprid 70WS at 7g / kg .
• Spray Dinotefuran 20% SG 60 g/acre or Flonicamid 50% WG @ 60 g/acre or Imidacloprid 17.8%SL 40- 50 ml/acre for controlling thrips

• Online resources
• CPG 2020