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