Diseases of Cardamom

Major diseases of Cardamom are:-

1.Damping off / rhizome rot/clamp rot – Pythium vexans, Fusarium oxysporum, Rhizoctonia solani, Phytophthora

Cardamom damping off

  • Infected leaves become pale, yellow and ultimately the young leaves die.
  • Older leaves die prematurely and new shoots that arise are weak, decay and the rhizomes rot at the base of the stem.
  • The diseased shoot can be pulled out easily.
  • Destruction of diseased clumps.
  • Providing proper drainage
  • Changing the nursery site
  • Drenching the nursery beds with Copper oxychloride 0.25% or Bordeaux mixture 0.5%, before 15 days of sowing.
  • Soil drenching with B.M 1% (or) PCNB 1.0%


2.Azhukal disease/capsule rot/fruit rot – Phytophthora parasitica car. nicotianae/ Phytophthora palmivora

azhukal disease

  • Symptoms can appear on the tender and matured leaves. Large circular, irregular, water soaked spots with black colour appear on leaves.
  • The exposed portion of the unopened leaves my rot.
  • Grey patches of irregular spots with brown margin are formed at the base of the leaf sheath.
  • The basal portion rots and the pseudo stem break away at the collar region.
  • The infection spreads to the underground plants and the rhizomes become rots.
  • Small light brown lesions appear in the green tender fruits which fall off in 3-6 days leaving the small fruit stalk. The tip of inflorescence also rot.
  • Removal and burning of infected plants.
  • Avoid moving of rhizomes from diseased areas to healthy area for planting
  • Provide proper drainage
  • Three sprays with Bordeaux mixture 1% in May, June, July
  • Soil drench with Bordeaux mixture 1 % (or) Copper oxychloride  0.25%


3.Cardamom mosaic virus (CDMV)

cardamom mosaic virus

  • General chlorosis of young leaves – parallel streaks of pale green tissues running along the veins from midrib to the margins.
  • Leaf sheath also shows stitch stripes.
  • In the advanced stage, the whole plant shows the mosaic symptom.
  • Rhizome shrivels and plants dies. If young clumps are attached they die before flowering.
  • Vector: Pentalonia nigronervosa


  • Collection and removal of infected clumps along with rhizomes and burning.
  • Raising of the nursery in diseases free areas.
  • Spray with dimethoate (or) Methyl dematan (or) Phosphomidon to kill the vector.


4.Chenthal disease/leaf blight – Colletotrichum gloeosporioides

cardamom leaf blight

  • Elongated, water soaked lesions of varying size appear on the upper surface of the leaf.
  • The spots become brown to dark with a pale yellow hole. Leaves wither and pseudo stem wilts.
  • New shoots which develop are reduced in size. Flowers fail to develop.
  • The inflorescence dries up starting from tip downwards. The affected garden shows burnt appearance.
  • Removal and destruction of affected leaves
  • Three sprays with carbendazim 0.1% (or) Mancozab 0.2% (or) copper oxychloride 0.25% at 30 days interval.




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