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Post Harvest Diseases:: Vegetables:: Garlic

Neck rot: Botrytis allii
Symptom:
  • Found  upon the bulbs  at the time of harvest
  • Affected scale tissue become soft
  • Dense layer of grey mould appear at the neck
  • Infection progresses most rapidly down the scales which have been originally infected
Neck rot Rotten neck Grey mould on clove Black sclerotia on bulb
Identification of pathogen:

Mode of spread and survival:

  • Survive as sclerotia
  • Requires cool and moist weather
  • Temp -15 to 20°c
Management:
  • Promoting rapid drying at harvest and good aeration in storage is best for managing Botrytis on bulbs
  • Additionally, cooler storage temperatures may help control the disease
Source of Images:
http://www.science.oregonstate.edu/bpp/Plant_Clinic/Garlic/botrytis.htm
http://pnwhandbooks.org/plantdisease/garlic-allium-sativum-neck-rot-gray-mold

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