Causal Agent:
Potyvirus (Zucchini yellow mosaic virus - ZYMV)
Characteristic Symptoms: | |
Infected plants are severely stunted. |
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Leaves exhibit yellow mosaic pattern, severe deformation, blistering, reduced size and necrosis. | |
Fruits are deformed. | |
Conditions for Disease Development | |
The virus is spread in a non-persistent manner by a number of aphid species, including Myzus persicae. | |
The virus is also transmitted mechanically through contaminated tools.
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Management and Control: | |
Use of resistant varieties, if available.
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Remove infected plants as early as symptoms are observed to minimize spread. | |
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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