Thursday, 12 March 2020

Bacterial slippery skin of Garlic

Bacterial slippery skin of Garlic

Pathogen: Burkholderia gladioli PV. alliicola

It is a type of bacterial disease that occurs in garlic whose pathogen is Burkholderia gladioli pv. alliicola is a symptom that appears in the leaf and bud.

Comment of Disease

  1. Soft rots usually appear during storage before or after harvest.
  2. Pathogenic soil that can be spread with irrigation water or rainwater.


  • Symptoms often appear as one or two villi leaves in the center of a group of leaves. These leaves eventually change from tip to yellowish-yellow dieback, while older leaves retain a healthy green appearance.
  • In addition to softening the initial tissues of the disease, the bulbs may appear healthy. In a longitudinal section, one or more inner scales were observed to be watery or cooked.
  • The disease increases the scale of the infected from top to base.
  • Eventually, all the internal tissue will rot. Finally dries and the bulb shrinks.
  • Squeezing the base of infected plants causes the inside of the bulb to slide outwards, hence the name "slippery skin".

Survival and Spread

This bacterium is soil-borne and can be readily water-splashed to the foliage and necks where it can enter through wounds.

Favorable Conditions

This bacterium requires moisture for infection and grows in the temperature range of 5°C–41°. Due to heavy irrigation and continuous dew, it becomes susceptible to disease.

Disease Management

Follow the cultural practices and chemical control methods as described for the slippery disease of onion.

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