UK: Latest AHDB pest bulletin now available
Several species of pest aphid are being captured by the Rothamsted suction trap network. Counts up to 4th June are reported in the latest edition of AHDB Aphid News. Captures include Aphis fabae, Myzus persicae, Macrosiphum euphorbiae, Brevicoryne brassicae and Nasonovia ribisnigri. In particular, the numbers of Myzus persicae captured at several locations are very high.
The risk of virus transmission to carrot crops is currently high as all potential virus vectors (Cavariella aegopodii, Cavariella theobaldi, Cavariella pastinaceae, Myzus persicae) are on the wing in many areas and their numbers are relatively high. The migration of lettuce root aphids from poplar to lettuce will have started in warmer locations.
The first turnip moth eggs will be hatching. However, the recent rainfall means that few of the new caterpillars are likely to have survived.
AHDB are monitoring the activity of diamond-back moth and silver Y moth in the UK and on the continent and have set up a web page to summarise the numbers of sightings recorded on web sites in six countries. Numbers are low at present. Keep up with the latest sightings here.
Large narcissus flies will be laying eggs in the south-west and eastern England and older eggs will be starting to hatch.
Information on the activity of a range of pests is available in the AHDB Pest Bulletin on the Syngenta website and the AHDB Pest Blog provides regular updates on pest activity at Wellesbourne and elsewhere - as the information comes in.