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Tobacco caterpillar: Spodoptera litura

Symptoms of damage

  • Scrapping of the leaves by freshly hatched larvae.
  • Grown up larvae feed the entire leaf leaving petioles alone looks the field grazed by cattle.

Identification of the pest

  • Egg: Golden brown eggs laid in masses covered with hairs.
  • Larva: Stout, cylindrical, greenish brown larvae with dark markings \.
  • Pupa: Pupate in earthen cocoon inside the soil.
  • Adult: Stout moth with wavy white markings on the brown forewings and a brown patch along the margin in white hindwings.
  • Nocturnal habit, larvae hide under the plants, cracks and crevices of soil and debris during day time.
  • Faecal pellets found on the leaves and ground is the indication of the pest incidence
  • Management ETL: 8 egg masses /100 m row Follow summer ploughing to expose pupae to sunlight and bird. Grow castor as a border (or) intercrop to serve as an indicator (or) trap crop. Install light trap @ 1 /ha to monitor moths activity. Install pheromone traps (Pherodin SL) @ 5 nos. / ac to monitor and kill male moths. Collect and destroy egg masses, early stage larvae with lace-like leaves. Avoid larvae migration by digging a trench of 30 cm deep and 25 cm wide with perpendicular sides around the infested fields. Spray SlNPV at 1.5 x 1012 POB per ha @ 250 LE during evening hours. Spray any one of the following insecticides either in the early morning or in the evening Spray BSKE 5 % Flubendiamide 20 WG 120 g/ac

Adult

  • Follow summer ploughing to expose pupae to sunlight and bird.
  • Grow castor as a border (or) intercrop to serve as an indicator (or) trap crop.
  • Install light trap @ 1 /ha to monitor moths activity.
  • Install pheromone traps (Pherodin SL) @ 5 nos. / ac to monitor and kill male moths.
  • Collect and destroy egg masses, early stage larvae with lace-like leaves.
  • Avoid larvae migration by digging a trench of 30 cm deep and 25 cm wide with perpendicular sides around the infested fields.
  • Spray SlNPV at 1.5 x 1012 POB per ha @ 250 LE during evening hours.
  • Spray any one of the following insecticides either in the early morning or in the evening
  • Spray BSKE 5 %
  • Flubendiamide 20 WG 120 g/ac
LarvaLeaf damage
Egg massAdult
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