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:

• Numbers of the peach–potato aphid (Myzus persicae) are high through much of England, with highest numbers at Kirton and Starcross, plus a first flush of peach–potato aphids in Scottish suction-traps this week.
• The potato aphid (Macrosiphum euphorbiae) was caught at ten sites this week, with small hotspots at Kirton (34) and Starcross (32).
• The willow ̶ carrot aphid (Cavariella aegopodii) was caught in eleven traps this week, but numbers decreased in 8/11 sites. This week numbers were highest at Kirton (280) and Wellesbourne (201).
• The mealy cabbage aphid (Brevicoryne brassicae) was caught at twelve sites this week, with a big hotspot at Wellesbourne (1843).
• The pea aphid (Acyrthosiphon pisum) was caught at thirteen sites this week, with a hotspot at Starcross (202), and with numbers increasing at 10/13 sites. Field reports of pea aphid are becoming more common especially in eastern England.
• Numbers of the black bean aphid (Aphis fabae) increased across England, with numbers highest in central and eastern England. Field reports indicate that despite multiple spray applications, aphids are very quickly re-colonising crops.

ahdb-aphid-news-13-.pdf bulletin_13_2015.pdf

Rosemary Collier : 10 Jul 2015 16:37 |  Comments (0) |  Report a problem