grlic virus

Asked July 3, 2019, 8:51 AM EDT

What viruses harm the growth of garlic and how to cleanse the viruses Does infection affect the crops of garlic and the extent of the damage?

Los Angeles County California

1 Response


I found this information from University of California on Garlic mosaic virus. Symptoms of garlic mosaic include: Small, angular, light-green-to-yellow. Discolored regions of tissue arranged in a mosaic pattern among darker tissue. Irregularly shaped, light-green blotches among normally colored tissues. Striping and streaking of leaves.

Symptoms are usually more pronounced in young leaves. Infected plants are stunted, and bulb size is reduced. Because garlic is vegetatively propagated, several viruses are commonly present in all garlic. The label "garlic mosaic" has been applied to a number of different viruses in different countries and this has caused some confusion. However, there is a trend toward referring to garlic mosaic as a disease caused by one or more viruses belonging to the potyvirus group (garlic yellow stripe virus, leek yellow stripe virus, and several others). In addition to being spread by vegetative reproduction, these potyviruses can also be transmitted by various aphids.

There is no cure for virus in plants. Purchase virus-free stocks produced from meristem tip culture and multiplied in areas free of commercial garlic to prevent reinfection by insects (aphids) that carry the viruses. Use of such stock can result in substantially higher yield.

In addition to purchasing certified clean stock, growing your crop under the best most optimal growing conditions will reduce the incidence of this and other garlic diseases. Here is a best practices list for you to follow.

I encourage you to reach out to your local Extension office who can put you in touch with a garlic growing expert in California.