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Agricultural crops :: Pulses :: Blackgram

Leaf Crinkle: Leaf Crinkle Virus
Field diagnostic symptoms
  • Chlorosis, crinkling and curling of leaves
  • hortened petioles and internodes.
  • Stunted plant with dark green leaves.
  • Delayed flowering with malformed flower buds.
   
Leaf crinkle infected plants

Causal agent :

    Urdbean leaf crinkle virus
Survival and mode of spread
  • Survival: Seed-borne
  • Spread: Sap and insect vectors - Bemesia tabaci, Aphis craccivora and A. gossypii
Favourable conditions
  • Infects cowpea, mothbean and weed host.
  • High temperature
Integrated disease management
  • Removal of weed hosts
  • Seed treatment with Dimethoate 30 EC (or) Imidacloprid 600 FS @ 5 ml /kg of seed
  • Rogue out the infected plants up to 45 days
  • Foliar spray of notchi leaf extract 10% at 30 DAS or neem formulation 3 ml/lit
  • Spray any one of the following insecticides and repeat after 15 days, if necessary.
      • Methyl demeton 25 EC @500 ml/ha
      Dimethoate 30 EC @ 500 ml/ha
Updated on Jun 2023
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