image of gardening tips header
    Past Articles Library  |  Video Tips  |  Gardening Idea Blog  |  About Us




Past Articles Library | Plant Diseases & Control | Cucumber Mosaic



 

CUCUMBER MOSAIC VIRUS
(CMV)

The cucumber mosaic virus has one of the broadest host ranges. Tomatoes infected with the cucumber mosaic virus develop a slight yellowing and mottling of the older leaves. Expanding leaves typically become twisted, curl downward, and develop a "shoestring" appearance as a result of a restriction of the leaf surface to a narrow band around the midrib of the leaf. Diseased plants are stunted and produce small quantities of fruit.

 
 

LIFE CYCLE

The cucumber mosaic virus overwinters in perennial weeds and may be transmitted to healthy plants by aphid vectors (although tomatoes are not the preferred host of aphids) or by mechanical means. The cucumber mosaic virus cannot withstand drying or persist in the soil. It also is more difficult than tobacco mosaic to transmit mechanically. Thus, cucumber mosaic tends to progress more slowly than tobacco mosaic in a field or garden.

 

 

PLANTS MOST AFFECTED

The disease affects a number of important vegetables and ornamentals including tomato, pepper, cucumber, melons, squash, spinach, celery, beets, and petunia.

 

 

DAMAGE

A virus distributed world wide, affecting most cucurbits. New growth is cupped downward, and leaves are severely mottled with alternating light green and dark green patches. Plants are stunted, and fruits are covered with bumpy protrusions. Severely affected cucumber fruit may be almost entirely white.

 
 

MEANS OF CONTROL

  • The virus is readily transferred by aphids and survives on a wide variety of plants. Varietal resistance is the primary management tool, and eliminating weeds and infected perennial ornamentals that may harbor the virus is critical.

  • Virus diseases cannot be controlled once the plant is infected. Therefore, every effort should be made to prevent introduction of virus diseases into the garden. Sanitation is the primary means of controlling virus diseases. Infected plants should be removed immediately to prevent spread of the pathogens. Perennial weeds, which may serve as alternate hosts, should be controlled in and adjacent to the garden. Avoid planting tomatoes next to cucurbits, spinach, or other vegetables and flowers susceptible to these diseases. Control of aphids will help reduce the likelihood of cucumber mosaic.



 







Latest Articles on our Blog


Guide to Growing Cucamelons

Organic Control of Crickets and Woodlice in Irises

Tips for Growing Swiss Chard

Product Review: iPhone Plant Light Meter


Email page | Print page |

Feature Article - How To Tutorials - Question & Answer

Quick Gardening Tip - Plant Gallery - Gardening Design Ideas

Disease & Pest Control - Monthly To Do Lists

Gardening Resources - Garden Clubs & Events - Climate Zones Maps

Gardening Tips & Ideas Blog

Contact us  |  Site map  |  Privacy policy



© 1993 - 2013 WM Media



Gardening-tip:

Growing Caladium

Caladiums grow from tubers sold in the spring.

You can buy the tubers and plant your own, but buying a full-grown plant is the easiest way to know what color the leaves will be.

Give your Caladiums high humidity or the leaf margins may turn brown.


Join Our Mailing List


Weekend Gardener Search