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Crop Protection :: Turmeric and Ginger

Rhizome scale: Aspidiella hartii

Symptoms of damage:
  • Field infestation

    • Plants look devitalized, pale and withered before drying completely.
    • In such cases at the time of harvest minute yellowish crawlers can be seen moving in large numbers and this is the potential stage of dissemination.

Identification of pest:

Storage infestation

  • In Initial stage of infestation in, the white coloured scales are seen scattered on rhizomes and latter they congregate near the growing buds.
  • When the infestation is severe the rhizome and buds shrivel and ultimately the entire rhizome dries.


  • Female: scales are circular (about 1mm diameter) and light brown to gray and appear as encrustations on the rhizomes.
  • Male is orange coloured with transparent wings, distinct head, thorax and abdomen.
  • Discard and do not store severely infested rhizomes
  • Collect and destroy damaged leaves
  • Select healthy rhizomes free from scale infestation for seed materials
  • Treat seed material with quinalphos 0.075% (for 20-30 minutes) before storage and also before sowing in case the infestation persists.
  • Apply well rotten sheep manure @ 10 t/ ha in two splits or poultry  manure in 2 splits followed by drenching dimethoate 30 EC @ 2 ml or phosalone 35 EC @  2ml /lit of water

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