Thrips control in tomato

Thrips control in tomato:- Plants infected with thrips develop spotted appearance on leaves which turn pale-white blotches due to drainage of sap. Due to thrips attack reduces production.

  • Plants infected with thrips develop spotted appearance on leaves which turn pale-white blotches due to drainage of sap. Due to thrips attack reduces production.
  • For effective control, spray Profenofos 3 Ml/litre of Water or fipronil 5% SC 3 ml/litre of Water or Thiamethoxam 0.5 Gm/litre of Water after every 10 days interval.

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Control measures of thrips in muskmelon

Control measures of thrips in muskmelon:- Both adults and nymphs damage the crop lacerate the leaf tissue and suck the sap. Tender shoots, buds, and flowers are attacked…

  • Both adults and nymphs damage the crop lacerate the leaf tissue and suck the sap.
  • Tender shoots, buds, and flowers are attacked as a result they become twisted and deformed, upward curling of leaves.
  • Spray Dimethoate 30% EC @ 250 ml/acre or Profenophos 50% EC @ 400 ml/acre or Fipronil 5% SC @ 400 ml/acre at fortnightly interval.
  • Pesticide spraying should be changed at every 15 days interval.

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Control measures of thrips in watermelon

Control measures of thrips in watermelon:- Both adults and nymphs damage the crop lacerate the leaf tissue and suck the sap. Tender shoots, buds, and flowers are attacked

  • Both adults and nymphs damage the crop lacerate the leaf tissue and suck the sap.
  • Tender shoots, buds, and flowers are attacked as a result they become twisted and deformed, upward curling of leaves.
  • Spray Dimethoate 30% EC @ 250 ml/acre or Profenophos 50% EC @ 400 ml/acre or Fipronil 5% SC @ 400 ml/acre at fortnightly interval.
  • Pesticide spraying should be changed at every 15 days interval.

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Management of Thrips in Cotton

Management of Thrips in Cotton:- Nymphs and adults lacerate the tissue and suck the sap from the upper and lower surfaces of leaves.They inject saliva and suck the lysed contents of plant cells resulting in silvery or brown necrotic spots………..

Management of Thrips in Cotton:-

Nature of Damage of Thrips:-

  • Nymphs and adults lacerate the tissue and suck the sap from the upper and lower surfaces of leaves.They inject saliva and suck the lysed contents of plant cells resulting in silvery or brown necrotic spots.
  • Seedlings infested with thrips grow slow and the leaves become wrinkled curl upwards and distorted with white shiny patches.
  • Rusty appearances in patches develop on under surface of leaves.
  • Higher infestation during vegetative crop growth results in late bud formation.
  • During the fruiting phase there is premature dropping of squares and the crop maturity is delayed combined with yield reduction.
  • The feeding by thrips on the developing bolls late in the season cause spots or wounds on the ripening of the ball or the quality of the seed.

Management:-

  • Seed treatment – Imidacloprid 60 FS @ 10 ml/kg or thiamethoxam 70 WS @ 5 g/kg seeds applied as seed treatment are efficient in suppressing the population of other sucking pest on cotton seedling.
  • Maintaining weed free conditions in cotton field from the spread of development of thrips.
  • Insecticidal options should be made when thrips infection results in high grade injury during clear sky period with no anticipated rains.
  • Spray of NSKE prepared on farm or crude neem oil spray @ 75 ml per pump suppress thrips population during pre squaring crop stage in both cases detergent / soap powder @ 1 gm / litre of spray fluid is to be added for getting uniform spray suspension.
  • Chemical Spray:- Spray any one Following insecticide.
  1. Profenofos 50% EC @ 50 ml/ Pump.
  2. Acetamiprid 20 SP @ 15 gm/Pump.
  3. Imidacloprid 17.8% SL @ 7 ml/pump.
  4. Thiamethoxam 25% WG @ 5 gm/pump.
  5. Fipronil 5% SC @ 40 ml/Pump.

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Management of Chilli Thrips

Management of Chilli thrips:- The infested leaves develop crinkles and curl upwards. Elongated petiole. Buds become brittle and drop down. Early stage, infestation leads to stunted growth and flower production, fruit set are arrested………….

Management of Chilli thrips

Symptoms:-

  • The infested leaves develop crinkles and curl upwards.
  • Elongated petiole.
  • Buds become brittle and drop down.
  • Early stage, infestation leads to stunted growth and flower production, fruit set are arrested.
Management:-

  • Do not grow chilli after sorghum.
  • Do not follow chilli and onion mixed crop.
  • Sprinkle water over the seedlings to check the multiplication of thrips.
  • Treat seeds with imidacloprid 70% WS @ 12 g/kg of seed.
  • Apply carbofuran 3% G @ 33 kg/ha or phorate 10 % G  @ 10 kg/ha or
  • Spray any one of the following insecticide.

 

             Insecticide Dose
Imidacloprid 17.8 % SL 100 ml/acre.
Dimethoate 30 % EC 300 ml/acre.
Emamectin benzoate 5 % SG 100 gm/acre
Profanofos 50% E.C. 500 ml/acre
Fipronil 5 % SC 500 ml/acre.
Spinosad 45 % SC 70 ml/acre.

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