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PEST MANAGEMENT DECISION GUIDE: GREEN AND YELLOW LIST

Groundnut thrips

Scirtothirps dorsalis Nilakadalai ilai pen
India
  • Raise five rows of maize densely as border crop.
  • Use of resistant varieties such as kadiri 3 and ICGS 86031.
  • Avoid planting rows closer than 2 m to reduce pest movement.
  • Maintain weed free field and field santation.
  • Use F20:F26 mulching sheet in between rows.
  • Monitor crops for pest activity on a weekly basis during growing season.
  • Symptoms include white patches on the upper surface of the leaves, nectrotic patches on the lower leaf surface and leaf crinkling.
  • Pest activity and presence increases during high temperatures with low rainfall.
  • The pest is known to transmit the virus for bud necrosis, hence monitor for symptoms of bud necrosis.
  • Consider direct control actions when 3-5 thrips are found per plant.
  • Removal and destruction of severly affected plants.
  • Set F20:F26up blue sticky trap at a rate of 5 traps per acre.
  • Spray neem oil (3 litres per acre) or pungam oil (6 litres per acre).
  • Soil application of neem cake at a rate of 50 kg per acre.
  • Forceful water spray once in 15 days.
  • Spraying of 1% azadiractin (trade name: Neemole,Neemten, Azatin) at a rate of 400 ml per acre.
  • Spraying of verticillium lecani at a rate of 1 litre per acre.
  • Avoid resurgence pesticides.
  • Always wear protective clothing when handling pesticides, follow product label instructions.
  • Spray Thiomethaxom 25% WG (e.g., trade name: Actara, Anant, Renova, Evident, Spike, Click) at a rate of 50 g per acre.
  • Not classfied by WHO.
  • Spray Imidacloprid 17.8 SL (e.g., trade name: Confidor, ltimo) at a rate of 60 ml per acre.
  • WHO II classified.
  • Spray Fipronil 5% SC (e.g., trade name: RegentSC, Devigent plus, Fipro) at a rate of 300 ml per acre.
  • WHO II classified.
AUTHOR(S): N.Srithar, ICAR, KVK.,P.Senthilkumar, MSSRF, K.Bharathidasan, MSSRF

CREATED/UPDATED: 8.10.2020
PRODUCED BY: Plantwise

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