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Tea mosquito bug destroys Cashew crop

  • Category
    Science & Technology
  • Published
    4th May, 2022

Context

Tea mosquito bugs have attacked acres of cashew crops in Odisha.

About

Tea Mosquito Bug:

  • Scientific Name: Helopeltis antonii
  • Tea mosquito bug is a major pest of cashew causing severe damage in several parts of the world.
  • Among the four species attacking cashew, H. antonii is the dominant species.
  • The pest has got potential to cause as high as cent per cent loss in yield.
  • Season of occurrence:
  • In general, TMB activity is very less during monsoon period (June- September) and the pest build up commences during October- November synchronizing with the emergence of new flushes after the cessation of monsoon rains.
  • The population reaches a peak during December-January, when the trees are in full bloom while, the pest activity is seen till May unitl harvest.
  • But, the pest incidence may be noticed throughout the year in young plantations.

Management

  • Undertake pruning to regulate the shade to facilitate proper penetration of sunlight inside the canopy.
  • Spray the following insecticides, thoroughly covering foliage and bark during early morning hours.
  • Monocrotophos at new flush formation.
  • Spray endosulfan or carbaryl in 1500-2000 L of water per ha and Urea 3% at flower initiation and again at fruiting time
  • Do not interplant cashew with crops that are host for Helopeltis bugs, such as cotton, tea, sweet potato, guava and mango.
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