UC IPM Online UC ANR home page UC IPM home page

UC IPM Home

SKIP navigation

 

How to Manage Pests

UC Pest Management Guidelines


Eggplant

Tobacco Mosaic Tobamoviruses

Pathogens: Various Tobamoviruses including Tobacco mosaic virus and Tomato mosaic virus

(Reviewed 4/10, updated 4/10)

In this Guideline:


SYMPTOMS AND SIGNS

Symptoms on eggplants infected with Tobacco mosaic virus vary with the cultivar and the specific virus or strain. A mild mosaic develops on leaves with some leaf malformation, including a fernlike appearance. During cool weather shoestringlike symptoms appear on leaves, which is also characteristic of Cucumber mosaic virus in tomato. Necrotic patterns may develop on fruit.

COMMENTS ON THE DISEASES

These viruses are commonly encountered in transplants where the plants are trained or handled by workers because the viruses are easily mechanically transmitted. There are many sources of these viruses, including tobacco products, eggplant seed, infected plant debris, and equipment; the tobamoviruses are not transmitted by insect, nematode or fungal vectors. The tobamoviruses are very stable viruses and can survive in plant debris for a number of years. These viruses are seldom seen in direct-seed fields.

MANAGEMENT

Use seed that has been treated to eliminate seedborne inoculum. Extreme sanitation is needed. The disease is difficult to control if the plants have to be handled. Some cultivars have genetic resistance to specific eggplant-infecting tobamoviruses.

PUBLICATION

[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Eggplant
UC ANR Publication 3475
Diseases
J. J. Stapleton, UC IPM, Kearney Agricultural Center, Parlier
R. M. Davis, Plant Pathology, UC Davis

Top of page


Statewide IPM Program, Agriculture and Natural Resources, University of California
All contents copyright © 2014 The Regents of the University of California. All rights reserved.

For noncommercial purposes only, any Web site may link directly to this page. FOR ALL OTHER USES or more information, read Legal Notices. Unfortunately, we cannot provide individual solutions to specific pest problems. See our Home page, or in the U.S., contact your local Cooperative Extension office for assistance.

Agriculture and Natural Resources, University of California

Accessibility   /PMG/r211100411.html revised: January 8, 2014. Contact webmaster.