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How to Manage Pests
UC Pest Management Guidelines
Cucurbits
Curly Top
Pathogen: Beet curly
top virus (BCTV)
(Reviewed 11/05,
updated 6/08)
In this Guideline:
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Symptoms of curly top include severe stunting, stiffness, short
internodes, and leaves that are darker green than normal. Runner tips tend to
turn up. Plants infected in seedling stage die. Leaves may roll upward and have
a crinkled appearance. Older plants may turn
yellow and die.
Curly top is rare in cucurbits. The virus is transmitted by the beet
leafhopper,
Circulifer tenellus; the leafhopper retains the virus and is capable of
transmitting it for its entire life. Curly top virus has a wide host range including many weeds.
No control is practiced.
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 County
B. J. Aegerter, UC Cooperative Extension, San Joaquin County
W. D. Gubler, Plant Pathology, UC Davis
J. J. Stapleton, UC IPM Program, Kearney Agricultural Center, Parlier
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