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How to Manage Pests

UC Pest Management Guidelines


Cucumber Mosaic

Pathogen: Cucumber mosaic virus (CMV)

(Reviewed 8/07, updated 8/07)

In this Guideline:


Cucumber mosaic appears as a chlorosis and blistering mottle of leaves. Margins of leaves are wavy. Intense yellow flecks may develop over the leaf surface. Plants are stunted.


Cucumber mosaic virus infects many crops and weeds. The virus is transmitted by many species of aphids. The disease is only an economical problem in potato when potatoes are planted next to or in the immediate vicinity of another crop heavily infested with the virus and aphids. Cucumber mosaic is an occasional problem in Kern County in potatoes planted near blackeye bean fields that harbor the virus.


Do not plant potatoes near crops heavily infested with aphids and infected with cucumber mosaic virus.


[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Potato
UC ANR Publication 3463
R. M. Davis, Plant Pathology, UC Davis
J. Nuñez, UC Cooperative Extension, Kern Co.
B. J. Aegerter, UC Cooperative Extension, San Joaquin Co.
Acknowledgment for contributions to the disease section:
C. Smart, Plant Pathology, UC Davis

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