TNAU Agritech Portal
  Home | About Us | Success Stories | Farmers Association | Farmers' Innovation | Publications | FAQs | Contact
Crop Protection :: Cash Crop :: Pest of Cotton

Leafhopper:  Amrasca (Biguttula biguttula) devastans
               

Symptoms of damage

  • Tender leaves become yellow
  • The margin of the leaves start curling downwards and reddening sets in
  • In the case of severe infestation, leaves get a bronze or brick red colour which is typical “hopper burn” symptom
  • The margin of leaves gets broken and crumbles into pieces when crushed
  • The leaves dry, shed and the crop growth gets retarded

Identification of the pest

  • Nymph - Light green, translucent, wingless found between the veins of leaves on the under surface
  • Adult - Green, wedge shaped leafhopper.

Management

  • ETL: 50 nymphs or adults/50 leaves
  • Apply carbofuran 3% CG 25 kg/ha
  • Spray any one of the following insecticides
    • Imidacloprid 200 SL 100 ml/ha
    • Phosphamidon 40 SL 600 ml/ha
    • Acetamiprid 20% SP 50 g/ha
    • Azadirachtin 0.03% WSP 500-1000 g/ha
    • Buprofezin 25% SC 1000 ml/ha
    • Clothianidin 50% WDG 30-40 kg/ha
    • Diafenthiuron 50% WP 600 g/ha
    • Dimethoate 30% EC 660 ml/ha
    • Fipronil 5%SC 1500-2000 ml/ha
    • Methyl demeton 25% EC 1200 ml/ha
    • Phosalone 35% EC 857 ml/ha
    • Profenofos 50% EC 1000 ml/ha
    • Thiacloprid 21.7% SC 100-125 ml/ha
    • Thiamethoxam 30% FS 10 kg/ha
    • Thiamethoxam 25% WG 100 g/ha
    • NSKE 5% 25 kg/ha
    • Where the leafhopper is a big menace apply neem oil formulation 0.5 % or neem oil 3% thrice at fortnightly
intervals

Home|About Us | Success Stories | Farmers Association | Publications | FAQs | Site Map | Disclaimer | Contact Us

© 2014 TNAU. All Rights Reserved.