Causal Agent: 
Potyvirus (Zucchini yellow mosaic virus - ZYMV)
| Characteristic Symptoms: | |
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 Infected plants are severely stunted.  | 
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Leaves exhibit yellow mosaic pattern, severe deformation, blistering, reduced size and necrosis. | 
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Fruits are deformed. | 
| Conditions for Disease Development | |
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The virus is spread in a non-persistent manner by a number of aphid species, including Myzus persicae. | 
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 The virus is also transmitted mechanically through contaminated tools. 
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| Management and Control: | |
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 Use of resistant varieties, if available. 
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Remove infected plants as early as symptoms are observed to minimize spread. | 
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 Control aphid population by spraying insecticides such as azadirachtin (neem), cartap hydrochloride (e.g.  PadanⓇ, Barena 50 SP, Gemtrak®), acetamiprid (e.g. MospilanⓇ), acephate (e.g. AcetamⓇ, CompeteⓇ), chlorphenapyr (e.g. Kotetsu) or penthoate (e.g. Pennant 
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| References: | 
| Compendium of Cucurbit Diseases (2010) by The American Phytopathological Society | 
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