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SQUASH DISEASE GUIDE - Harris Moran Seed Company

Papaya ringspot virus

Papaya ringspot virus is common in tropical and subtropical areas. It occasionally causes epidemics in some temperate regions.

Symptoms: severe plant stunting. Foliage exhibits green mosaic, malformation, puckering, blisters, distortion, and narrow laminae. Apical leaves are frequently narrowed and are reduced to the main veins. Fruits are malformed, such as knobby overgrowth accompanied by color break. It is often found in association with WMV, ZYMV and CMV.

Control: application of insecticides for the control of aphid vectors of PRSV can limit the spread of the virus.

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