Updated aphid bulletins

The latest editions of the Rothamsted Suction Trap Bulletin and AHDB Aphid News are attached. The information of interest to vegetable and salad growers is as follows:

The information below relates to suction-trap samples collected during bulletin week 10: 08/6 – 14/6. The weather this bulletin week was seasonably warm and aphid numbers in the suction-traps have increased, despite a wet weekend.

• Numbers of the peach–potato aphid (Myzus persicae) have increased at 8/14 sites, with highest numbers in central and southern England.

• The potato aphid (Macrosiphum euphorbiae) was caught at nine sites this week in low numbers, with small hotspots at Hereford (17) and Writtle (11).

• The willow ̶ carrot aphid (Cavariella aegopodii) was caught in all our traps this week, but numbers are decreasing in 8/14 sites. Numbers were highest at Rothamsted (321) and Silwood (288).

• The mealy cabbage aphid (Brevicoryne brassicae) was caught at six sites this week, with hotspots at Wellesbourne (162) and Hereford (38).

• The pea aphid (Acyrthosiphon pisum) was caught at seven sites this week, with hotspots at Silwood (10) and Wye (20).

• The black bean aphid (Aphis fabae) has been caught at eight sites this week in low numbers.

• No currant-lettuce aphids (Nasonovia ribisnigri) were caught this week.

ahdb-aphid-news-10-.pdf bulletin_10_2015.pdf

Rosemary Collier : 19 Jun 2015 15:21 |  Comments (0) |  Report a problem