Rothamsted suction trap captures for the week ending 20th July

A combination of the hot weather and thundery downpours resulted in little significant aphid flight activity in the week ending 20^th July. In Scotland things are later and aphids remain somewhat more active right across the board. 2014webbulletin16.pdfahdb_aphid_news_20140725.pdf

• Numbers of the peach–potato aphid (Myzus persicae), potato aphid (Macrosiphum euphorbiae) and cabbage aphid (Brevicoryne brassicae) flying are now low everywhere.
• The pea aphid (Acyrthosiphon pisum) has been caught at ten sites with hotspots at Wellesbourne (87), Rothamsted (35) and Writtle (20).
• The black bean aphid, (Aphis fabae), was caught at ten sites and numbers are roughly the same as last week or have started to fall.

Rosemary Collier : 25 Jul 2014 16:03 |  Comments (0) |  Report a problem