Pest:Green Leaf Hopper

Nephotettix virescens and N. nigropictus Cicadellidae

The biology and habits of both these species are similar.The female thrust its eggs in to the tissues of rice leaves, laying 24 -34 eggs. The egg and larval period lasts for 4-6 days and 13-21 days respectively. The nymphs attain adult stage molting 5 times.They breed on some of the common grasses during off- season.

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  • Pest 1
  • Pest 2
  • Pest 3
  • Pest 4
  • Pest 5
  • Pest 6
  • Pest 7
  • Pest 8
  • Pest 9
  • Pest 10
  • Pest 11
  • Pest 13
  • Pest 14
  • Pest 15
  • Pest 16
  • Pest 17
  • Pest 18
  • Pest 19
  • Pest 12

Symptoms

  • Leaf hoppers suck up the plant sap causing withering of the plants
  • In cases of severe attack the growth get stunted and the plants wither away ultimately.
  • Green leaf hoppers transmit tungro, virus and transitory yellowing virus diseases.

Procedure for Observation

Randomly mark 4 one sq.meter plots per 0.4 Ha. Select five hills at random per m.sq. and take quick count of adult and nymphs without disturbing the plants.

ETL

  • Planting to pre tillering: 10 insects per hills (In RTV endemic area 2 insects per hill).
  • Mid tillering: 10- 20 insects per hill.
  • Panicle initiation to booting : 20 insects per hill.

    • Control Measures

  • Sweep with hand nets and destroy the hoppers in kerosenated water.
  • Sweep with sticky trap to trap hoppers
  • Spray carbaryl (carbaryl 50 WP,or sevin 50 WP @ 2 kg/Ha),Imidacloprid (Confidor 200 SL @150 ml/Ha,Tatamida 200 SL@ 150 ml/Ha) Flubendiamide: (Takumi 20 WDG @120 g/ha;Fame 480 SC @ 50 ml/Ha).