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How to Manage Pests

UC Pest Management Guidelines

| More pests | More crops | About guidelines |

Cucurbits

Lettuce Infectious Yellows

Pathogen: Lettuce infectious yellows virus

(Reviewed 11/05, updated 11/05)

In this Guideline:

SYMPTOMS

Symptoms of lettuce infectious yellows include a characteristic interveinal yellowing or reddening and stunting of affected plants.

COMMENTS ON THE DISEASE

This disease was important only in Imperial and Riverside counties, but is only rarely seen today. The virus is transmitted by the sweetpotato whitefly, Bemisia tabaci, which has been displaced by the silverleaf whitefly, Bemisia argentifolii. The virus has a wide host range that includes cucurbits, carrot, lettuce, sugarbeet, and many weeds.

MANAGEMENT

No control is practiced.

PUBLICATION

[UC Peer Reviewed]

UC IPM Pest Management Guidelines: Cucurbits
UC ANR Publication 3445
Diseases
R. M. Davis, Plant Pathology, UC Davis
T. A. Turini, UC Cooperative Extension, Imperial Co.
W. D. Gubler, Plant Pathology, UC Davis
J. J. Stapleton, UC IPM Program, Kearney Agricultural Center, Parlier
Acknowledgment for contributions to the disease section:
B. J. Aegerter, Plant Pathology, UC Davis

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Statewide IPM Program, Agriculture and Natural Resources, University of California
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