Rothamsted suction trap captures for week ending 13 July
In the week ending 13th July, aphid flight activity, as monitored by the suction-traps, continued to decline slowly in England, with the exception of the grain aphid coming off ripening cereals. In Scotland things were somewhat more active right across the board.
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Numbers of the peach–potato aphid (Myzus persicae) fell almost everywhere this week.
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The potato aphid (Macrosiphum euphorbiae) was caught in low numbers at four sites.
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The pea aphid (Acyrthosiphon pisum) has been caught at ten sites with hotspots at Writtle (64) and Dundee (23).
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The mealy cabbage aphid (Brevicoryne brassicae) was caught at eight sites in low numbers.
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The black bean aphid, (Aphis fabae), was caught at ten sites and numbers are generally increasing with a hotspot at Writtle (33).
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The currant-lettuce aphid (Nasonovia ribisnigrii) was caught in low numbers at 3 sites (maximum 3 at Elgin).
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The willow carrot aphid was caught at eight sites this week, with numbers low everywhere.
2014webbulletin15.pdfahdb_aphid_news_20140718.pdf
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