Mango hoppers

Mango hoppers: Idioscopus niveoparsus,I. clypealis, Amirtodus atkinsoni

Symptoms of damage:

  • Nymphs and adults suck the sap of inflorescence
  • Withering
  • Shedding of flower buds and flowers
  • The presence of honeydew secrecation on lower leaves and development of sooty mould.
  • Clicking sound – movement of jassids amidst leaves.
  • Hoppers provide shelter in the cracks and crevices of the barks on the tree

Identification of pest:

  • Nymph – Nymphs pale yellow, very active and hide in lower shoots or in cracks in the barks.
  • The insect appears in February when mango trees come to flowering.
  • Adult
    • a. Idioscopus niveoparsus; Adults: dark with wavy lines on wings and three spots on scutellum.
    • b. I. clypealis; Adults: small, light brown with dark spots on the vertex and two spots on scutellum.
    • c. Amirtodus atkinsoni; Adults: large, light brown with two spots on scutellum.

Management:

  • Avoid close planting, as the incidence very severe in overcrowded orchards.
  • Orchards must be kept clean by ploughing and removal of weeds.
  • Spray two rounds of acephate 75 SP@ 1g/lit or phosalone 35 EC@ 1.5 ml/li

OR

  • First spray at the time of panicle emergence, the second spray two weeks after the first spray.
  • Wettable sulphur @ 2 g/lit may be sprayed after spraying carbaryl to avoid mite resurgence.
  • The mixture toxaphene with sulphur (1:1) has been reported to be effective against the pest.
  • Neem oil 5 ml/lit of water can be mixed with any insecticides.
  • Spray 3 percent neem oil or neem seed kernel powder extract 5 per cent.

 

Source-

  • TamilNadu Agritech Portal
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