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Aphids predicted to fly two weeks earlier in 2019 after milder winter

Aphids will start to fly about two weeks earlier than average this year, according to the AHDB Aphid News service.

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The relatively early flights are due to winter temperatures being about 1degC above the 30-year average across most of Britain.

 

Sue Cowgill, who manages pest research at AHDB, says: “When it comes to the first aphid flights, temperatures in January and February are critical.

 

“The spell of unseasonably warm weather at the end of February, in particular, has really helped push aphid development along this year.”

 

Two forecasts

 

Two forecasts are available. The forecast for cereals covers bird cherry-oat aphid, rose-grain aphid and grain aphid. The forecast for brassica and potato covers peach-potato aphid, potato aphid and mealy cabbage aphid.

 

Regional information on aphid species and numbers is published within AHDB Aphid News. The e-newsletter is emailed weekly (Friday), during the main aphid flight period (typically, April to November).

 

The latest aphid forecasts, as well as information on how to sign up to receive Aphid News, are published on the AHDB website: ahdb.org.uk/aphid-news


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