Numerous viruses that impact cucurbit production or for which cucurbits are a primary host have been identified in one or more cucurbit-producing regions of the United States. Some of these viruses have been present for decades while others have only recently been introduced, and some are yearly production concerns while others have not been detected in years (historic) or are under official control in the United States (transient). These viruses, outlined below according to mode of transmission and genus, are primarily transmitted by various insect vectors. In some cases, the mode(s) of transmission have not yet been identified. Virus prevalence and impact varies by region and is influenced by crop, reservoir host, and vector presence and prevalence. Virus identification by symptoms alone is not possible due to symptom similarity and mixed infections. Contact your local Extension office or diagnostic laboratory for assistance with disease and virus diagnosis.
Author: Rebecca A. Melanson, Extension Plant Pathologist, Mississippi State University Extension.
This is a publication of the Emerging Viruses in Cucurbits Working Group (EVCWG).
This publication may be distributed without alteration for nonprofit educational purposes provided that appropriate credit is given to the author and the EVCWG.
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