All entries for Friday 25 July 2014

July 25, 2014

Rothamsted suction trap captures for the week ending 20th July

A combination of the hot weather and thundery downpours resulted in little significant aphid flight activity in the week ending 20th July. In Scotland things are later and aphids remain somewhat more active right across the board. 2014webbulletin16.pdfahdb_aphid_news_20140725.pdf

  • Numbers of the peach–potato aphid (Myzus persicae), potato aphid (Macrosiphum euphorbiae) and cabbage aphid (Brevicoryne brassicae) flying are now low everywhere.
  • The pea aphid (Acyrthosiphon pisum) has been caught at ten sites with hotspots at Wellesbourne (87), Rothamsted (35) and Writtle (20).
  • The black bean aphid, (Aphis fabae), was caught at ten sites and numbers are roughly the same as last week or have started to fall.

Pest update from Wellesbourne

Between Tuesday (22nd) and Friday (25th) we found:

  • 8 carrot flies on traps in this year's carrots (3 traps) (it really looks as if some of the population are aestivating due to the hot weather)
  • Total of 87 cabbage root fly eggs from around 15 cauliflower plants.
  • There was 1 silver Y moth, no diamond-back moths and no turnip moths (2 traps per species).

The 3 yellow water traps caught:

  • 3 male and 30 female cabbage root flies
  • 20 bean seed flies
  • 6 pollen beetles
  • 38 flea beetles
  • 2 cabbage stem weevils
  • 1 small white butterfly

July 2014

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  • 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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