Identification Symptoms

  • The earliest symptoms observed on 2-3 month old buttons.
  • Pale yellow triangular patches seen below the perianth, later they transform to brown.
  • Severely affected buttons drop prematurely.
  • As the buttons grow, brown patches lead to black necrotic lesions with longitudinal fissures on the husk.
  • Oozing of the gummy exudation from the affected surface of the nuts.
  • Uneven growth results in distortion of nuts leading to reduction in copra yield.
  • In severe cases, the nuts are malformed with cracks and hardened husk.