Black Gram Stem canker

Black Gram Stem canker: Macrophomina phaseolina

  • In rice fallows, symptoms appear on 4 weeks old black gram crop as raised white cankers at the base of the stem.
  • These enlarge gradually and turn as raised brown streaks spreading upwards.
  • Plants are stunted and leave dark green, mottled and reduced in size.
  • Normal leaves on the affected plants drop suddenly and dry.
  • Flowering and podding are greatly reduced.
  • Deep ploughing in summer.
  • Follow crop rotation
  • Soil amendment with farm yard manure @ 12.5 tonnes/ha is helpful in reducing the incidence of the disease
  • Destroy the diseased plant debris by burning of burying in the soil.
  • Seed treatment with T. viride @4g/kg or P. fluorescens @ 10g/ kg of seed or Carbendazim or Thiram 2g/kg of seed.
  • Spot drenching with Carbendazim 1g/lit or P. fluorescens / T. viride 2.5 kg/ha with 50 kg FYM.



  • TamilNadu Agritech Portal
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