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Cucumber mosaic virus (CMV) and aphids in lupins

Seasonal forecasts of risk are now provided through DAFWA's Crop Disease Forecast page

2009 Forecast - updated May 2009

Cucumber mosaic virus (CMV), which is seed-borne in lupins and is spread by aphids, causes a serious disease of narrow-leafed lupins (Lupinus angustifolius). Once infected, a plant cannot be "cured". As well as decreasing grain yields, CMV is transmitted into developing seed prior to harvest. Aphids also cause yield losses in lupins due to direct feeding damage. However, epidemics of CMV and outbreaks of aphids are sporadic in the grainbelt of Western Australia (WA). The Grains Research and Development Corporation (GRDC) have funded research through the Centre for Legumes in Mediterranean Agriculture (CLIMA) and the Department of Agriculture and Food, Western Australia (DAFWA) to develop effective control strategies for CMV and aphid feeding damage and a forecast of risk for both aphid outbreaks and epidemics of CMV in lupins. DAFWA supports the screening of lupin varieties and breeding lines for resistance to CMV,, and GRDC have funded work to investigate resistance to aphids in lupins.

To minimise losses from CMV, growers are advised to a) use seed from seed stocks from which representative 1000-seed samples have been tested and shown to be free of CMV, b) sow early and c) establish a crop with high plant density (100-110 kg/ha of 90% viable seed). This advice forms part of an integrated disease management package, which includes a number of other cultural measures for controlling CMV spread.

This website provides a link to the seasonal forecast for CMV risk in WA lupins each year. It also provides background information for growers, advisers, researchers, students and other users, about CMV and aphids in lupins in WA.

Click on the links at the top of the page or in the side margin to view further information about the aphids and CMV, aphid feeding damage and control, seed testing for CMV, CMV control options, assessment of CMV risk, the decision support system supporting forecasts, the forecast for this growing season and photographs of symptoms and aphid vectors. The research covered in this website has been done by CLIMA and DAFWA staff including Debbie Thackray, Roger Jones, Francoise Berlandier, Art Diggle, Annette Bwye and Wayne Proudlove, with assistance from Brenda Coutts, Linnet Cartwright, Jenny Hawkes, Monica Thomas, and others.

 

For further information contact:

Roger Jones

tel: +61 8 9368 3269
fax: +61 8 9474 2840
e-mail: rjones@agric.wa.gov.au

 

Page updated: May 2009