Cucumber Mosaic Virus

CMV

Description:

A viral disease that causes mottling and sometimes distortion of the leaves. Plants are often stunted.
The fruit of some cucurbits may have sunken spots or a raise marbled pattern.
Causes woodiness in Passionfruit.

Species Affected:

Clover, Capsicums, Cucumbers, Lupins, Medics, Passionfruit. Pumpkin, Watermelon, Zucchini

Biology:

Spread by Aphids especially the Cotton Aphid (Aphis gossypii), Green Peach Aphid (Myzus persicae), Cowpea Aphid (Aphis craccivora), and Blue-green Aphid Acyrthosiphon kondoi).
In Narrow-leaved Lupins (Lupinus angustifolius) it is also transmitted in seed.

Life Cycle:

Origin and History:

Distribution:

Significance:

Management and Control:

Plant healthy seed.
Control Aphids with anti-feeding insecticides if symptoms present and Aphid numbers are high.
Control alternate hosts in crops and surrounding areas.
Remove and destroy diseased plants.

Capsicums

Control Thrips.
Remove and destroy infected plants.

Lupins

Increase seeding rate to shade out infected plants.
Graze adjacent Clover and Medic pastures to keep Aphid numbers lower.

Passionfruit

Remove affected vines. Keep vineyard free of flower and vegetable crops.
Plant vines with a mild strain to cross protect against the severe strain.

Related and Similar Species:

References:

Acknowledgments:

Collated by HerbiGuide. Phone 08 98444064 or www.HerbiGuide.com.au for more information.