Soybean Aphid

Soybean Aphid: Aphis spp.

Symptoms of damage

  • They suck the plant sap from the stem, leaves and pods which cause a reduction in yield.
  • The infested leaves are wilted or curled.
  • Plant stunting, reduced pod and seed counts, puckering and yellowing of leaves.

Identification of the pest

  • Winged adults: Have a black head and thorax.
  • Aphids:  Excrete honeydew on the surface of lower leaves.


  • Dusting  of cow dung ash and spraying of  clay suspension as asphyxiants (in small area and low incidence of sucking insects)
  • Spray 0.05 % quinalphos 25 EC, oxydemeton methyl 25 EC, or dimethoate 30 EC @ 2ml /lit at the crop age of 35-40 days and repeat after 15 days if needed.



  • TamilNadu Agritech Portal
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