Sapota Stem borer

Sapota Stem borer: Plocaederus ferrugineus

Symptoms of damage:

  • Presence of small holes at the collar region
  • Gummosis
  • Extrusion of frass through the bore holes at the collar region
  • Yellowing and shedding of leaves
  • Drying up of twigs and gradual death of the tree.

Identification of pest:

  • Adult – medium sized reddish brown beetle.
  • Head and thorax – dark brown or almost black.


  • Collect and destroy the damaged plants
  • Field sanitation
  • Swab Coal tar + Kerosene @ 1:2 or Carbaryl 50 WP 20 g / l on the basal portion of the trunk ( 3 feet height)
  • After scraping the loose bark to prevent oviposition by adult beetles.
  • Padding with monocrotophos 36 WSC 10 ml in 2.5 cm /tree soaked in absorbent cotton.
  • If infestations are severe then apply the copper oxychloride paste on the trunk of the tree.
  • Hook out the grub from the bore hole and apply monocrotophos 10 to 20 ml/ hole (or)
  • One celphos tablet (3 g aluminum phosphide) per hole
  • Apply carbofuran 3G 5 g per hole and plug with mud.
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