Stay alert for Russian wheat aphid
25 Aug 2016
With new confirmations of Russian wheat aphids (RWA) near Griffith, Jerilderie and Swan Hill, NSW Department of Primary Industries (DPI) has urged growers and farm advisers in southern NSW to be on the lookout for the pest.
DPI plant pathologist, Andrew Milgate, today issued a joint DPI and Grains Research and Development Corporation (GRDC) crop disease alert to growers confirming that RWA has been found in more areas of the state.
“We are finding high numbers of aphids in crops this season and it’s important growers monitor crops for aphid presence, correctly identify the species and apply appropriate management strategies to reduce yield losses,” Dr Milgate said.
“Careful inspection of aphids is required to identify the species, with leaf rolling and leaf streaking distinct symptoms of RWA.
“We found high levels of oat aphids and a relatively low level of RWA on wheat plants from Oaklands, near Jerilderie and growers should be aware that more than one aphid species may be present in crops.”
Grain growers are encouraged to contact their agronomist or seek advice from NSW DPI and Local Land Services for information on how to manage the pest in cereal crops.
Tools are available to help manage the aphid, including an emergency use permit for specific chemicals issued by the Australian Pesticide and Veterinary Medicines Authority.
Grain growers planning to spray are encouraged to adhere to all general chemical use practices.
Growers and advisers are advised to remain vigilant and continue to monitor cereal crops for aphids and symptoms.
If RWA presence is suspected growers should collect a sample for identification.
More images are available including Russian wheat aphids close-ups from bernadette.york@dpi.nsw.gov.au
More information
- Details of where to send samples and more information about RWA
- Additional information on the GRDC website.
Media contact: 02 6391 3686
