by: Kanika SohaneyPosted on:

Stem borer

Stem borer: Chilo partellus

Symptom of damage:

  • Withering and drying of central shoot -“dead heart”
  • Red mining in the midrib
  • Bore holes visible on the stem near the nodes.
  • Tender folded leaves have parallel “shot hole”
  • Affected parts of the stem may show internally tunnelling caterpillars.

 

Identification of the pest:

  • Egg: Scale-like flat oval eggs in batches on the under surface of leaves near the midribs
  • Larva: Yellowish brown with a brown head and prothoracic shield
  • Adult: Moth is medium size, straw coloured

Management:

  • Collect the stubbles after harvest and burn to destroy diapausing borers
  • Set up light trap till midnight to attract and kill the stem borer moth
  • Mix any one of the following insecticides with sand (total quantity of 50 kg)
    • Phorate 10G@ 8 kg
    • Carbofuran 3G@ 17 kg
    • Carbaryl 50 WP@ 1 kg (500 lit spray fluid/ha).

 

 

Source-

  • TNAU Agritech Portal
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