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Symptoms

  • Disease appears on rachillae of the male flowers and then in the main rachis as brownish patches which soon spread from tip downwards covering the entire rachis causing wilting
  • The female flowers of the infected rachis shed and the whole inflorescence show ‘die back’ symptom
  • The fruiting bodies of the fungus, (conidia ) appear  as concentric rings in the discolored areas
  • The disease is severe mostly during dry condition (February – March)

Management

  • Remove affected inflorescence immediately. Spray mancozeb (4 g in 1 litre of water) twice, once just after female flowers are set and again 15-28 days later
  • Aureofungin solution at 100 ppm concentration is also effective in controlling the disease