All entries for Saturday 08 July 2017

July 08, 2017

The latest edition of AHDB Aphid News is now available.

The peach–potato aphid (Myzus persicae) numbers decreased at all ST (suction trap) sites with the highest numbers at Wellesbourne (97) and Newcastle (64). Tests show that up to 68% of these migrants are carrying Turnip yellows virus. 
The mealy cabbage aphid was caught at twelve ST sites this week, increasing at six sites with the highest number at Wellesbourne (12), and higher than average numbers in YWT (yellow water traps) from the North of Scotland, Midlands and South West. Field reports indicate they are mostly in low numbers in OSR crops. 
No currant-lettuce aphids (Nasonovia ribisnigri) were caught in ST this week. 
Numbers of the willow–carrot aphid are highest at York and the parsnip aphids are highest at Kirton.

Update – Wellesbourne, 09–15/10/2017, Suction, 12 caught, 0% carrying TuYV Kirton, 09–15/10/2017, Su… by Angela Hambidge on this entry
Update Spalding 28/9 02/10/2017 YWT 12 caught, 25% carrying TuYV. by Angela Hambidge on this entry
Update – Wellesbourne 02 – 08/10/2017 Suction, 11 caught, 14% carrying TuYV 09 – 12/10/2017 YWT, 1 c… by Angela Hambidge on this entry
Update – Wellesbourne 11/9 – 17/9/2017 Suction trap 1 aphid 0% carrying TuYV Wellesbourne 21/9 – 25/… by Angela Hambidge on this entry
Update – Kirton, Lincolnshire 28/8–03/09/2017 Suction trap 4 aphids 33% carrying TuYV Spalding, Linc… by Angela Hambidge on this entry

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