Causal Agent:
Crinivirus (Cucurbit Yellow Stunt Disorder Virus - CYSDV)
| Characteristic Symptoms: | |
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The virus induces interveinal yellow spots in mature leaves of melon. |
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The yellow spots enlarge and may eventually coalesce, resulting in the yellowing of the entire leaf except for the veins which remain green. |
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Infected leaves will sometimes roll up and become brittle. |
| Conditions for Disease Development | |
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The virus is transmitted from plant to plant by the whitefly vector, Bemisia tabaci. |
| Management and Control: | |
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Use resistant varieties, if available.
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Remove weeds that serve as alternate hosts. |
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Increase water and fertilizer application.
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Control whitefly population by using plastic mulch, insect traps and/or use of insecticides such as imidacloprid (e.g. Solomon®, Confidor®, Admire®, Provado Supra®), dimethoate (e.g. Perfekthion®), metamidophos (e.g. Matador®) and cartap hydrochloride (e.g. Padan®, Dimo®, Vegetox®). |
References:
https://microbewiki.kenyon.edu/index.php/Cucurbit_yellow_stunting_disorder_virus_(CYSDV)
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