Mango (Mangifera indica)

Mango fruit fly (Bactrocera (Dacus) dorsalis)

Symptoms

  • The female punctures outer wall of mature fruits with the help of its pointed ovipositor and insert eggs in small clusters inside mesocarp of mature fruits.
  • Brown spots are seen on outer surface of fruit
  • On hatching, the maggots feed on fruit pulp and the infested fruits start rotting due to further secondary infection.

Management

  • Prior to harvest (30-40 days) collect and dispose off infested and fallen fruits to prevent further, multiplication and carry over of population.
  • Ploughing of orchard during November-December to expose pupae to sun’s heat which kills them.
  • Traps baited with basil can be hanged at branches @ 4 no/tree
  • Hot water treatment of fruit at 48 ± 10oC for 60 min.
  • Soil application of beauveria bassiana 2% (20g/litre of water)
  • If infestation is heavy, prepare the solution of mlathion 2 ml in 1 litre of water + 20 gram jaggery and spray @ monthly intervals.