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Agricultural crops :: Pulses :: Redgram

Sterility Mosaic Disease (SMD): Pigeonpea sterility mosaic virus (PPSMV)

Symptom
    • Vector: Aceria cajani
  • The affected plants are stunted due to shortening of     internodes.
  • The auxiliary buds are stimulated to grow and the     branches are crowded at the top giving bushy  appearance.
  • Mainly three types of symptoms are associated viz.   severe mosaic in leaflets with complete sterility , mild    mosaic with partial sterility and ring spots characterized by a green island surrounded by a   chlorotic halo.
DSCN3562
Typical cholorotic ring Complete sterility before flowering Complete sterility after flowering

Management

  • Rouging  out infected plants up to 40 days after sowing
  • Spraying with Fenazaquin @ 1 ml/ litre   soon after appearance of the disease and if necessary     repeat after 15 days.
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