AHDB Aphid News

The latest edition of AHDB Aphid News has just been released.

• Monitoring crops is still advised, total numbers for several aphid species have generally increased.

• Black bean aphids have been caught across England in both ST (suction traps) and YWT (yellow water traps) this week, as well as YWT in central parts of Scotland. The highest number caught in the ST was at York (28).

• The peach–potato aphid (Myzus persicae) numbers increased at six ST sites with the highest number found at Wellesbourne (80). Tests show that up to 77% of these migrants are carrying Turnip yellows virus.
• The mealy cabbage aphid was caught at twelve ST sites this week, increasing at ten sites with the highest number at Hereford (44). Very high numbers were found in YWT from the Midlands as well as higher than average numbers in the North of Scotland.
• Currant-lettuce aphids (Nasonovia ribisnigri) were caught in ST at Wellesbourne (8) and Hereford (10) this week.
• Numbers of the willow–carrot aphid were highest at Newcastle and parsnip aphids were highest at York and Kirton.
  

Rosemary Collier : 14 Jul 2017 17:33 |  Comments (0) |  Report a problem