Welcome to Official Portal of Agriculture Department, Sikkim!

  • Change Font Size:
  • -A
  • |
  • A
  • |
  • +A
  • ||
  • Change Theme:
 
logo user
emblem userSign In
Home About Us Contact Us

More Menu

GINGER Dry Rot

Name of Crop GINGER
Scientific Name Zingiber officinale Rosc
Local Name Adhuwa
Family Zingiberaceae
Distribution state/World wide Asia and South East Asia
Common Name of Disease DRY ROT
Local Name of Disease DRY ROT
Causal Organism Fusarium oxysporum and Pratylenchus coffeae
Distribution of Disease in Sikkim Disease incidence is more in dry areas of South and West Sikkim and also in some areas of East and North Sikkim
Disease Incidence Moderate
Site of Infection Roots are affected first followed by rhizome. However, symptom could be seen on the leaves on the standing crop (marginal yellowing of leaves)
Dissemination of the Disease It is a seed-borne and soil borne disease
Symptoms The affected plants appear stunted and exhibit varying degree of foliar yellowing. The affected rhizomes and roots show brownish lesions which later merge. In advance stages the rhizomes when cut show a brownish ring and is mainly restricted to cortical region. The pseudostems of dry rot affected plant do not come off easily with a gentle pull in contrast to soft rot. The affected rhizomes are often shrunken and dry and are not marketable. Both nematode (Pratylenchus) and fungus (Fusarium sp.) are found associated in diseased rhizome
Favourable enviromental condition for disease Intercropping ginger with maize is contributing in building up of pathogen population as maize is the alternate host for the Pratylenchus coffiaeae. Poorly nourished crop are more susceptible to the disease. The disease problem becomes severe under storage condition
Mode of Transmission      Disease is transmitted to a healthy plot through infected planting materials. It is also a soil borne disease
Plant Protection Measures               Seed should be selected from a diseased free source. Seed rhizomes should be treated with hot water at 51 degree centigrade for 10 minutes and shade dry before sowing in the field. Hot water                treatment was found effective against dry rot caused by nematode. Crop rotation of 3-4 years should be followed to avoid disease incidence. Planting should be done on raised bed with proper                    drainage. Thick mulching should be provided to check weed growth and to conserve moisture. FYM should be well decomposed to avoid white grub infestation