Potato White grubs

Potato White grubs: Holotrichia sp.

Symptoms of damage:

  • Grubs feed on roots and tubers
  • Grubs feed voraciously during night time

Identification of pest:

  • Larva:  “C” shaped grub
  • Adult: Brown beetle with pale prothorax


  • Summer ploughing to expose pupae
  • Dust Quinalphos 5% @25 kg/ha at 10 days after first summer rain
  • Set up light trap @1/ha between 7 PM and 9 PM
  • Handpick adult beetles in the morning



  • TamilNadu Agritech Portal
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