All entries for Friday 02 August 2019

August 02, 2019

AHDB Aphid News

The latest edition of Aphid News has been released for the week eding 28th July.

  • Peach–potato aphid numbers decreased to a third of the previous week, only increasing at Kirton.
  • No potato aphids were captured.
  • Cabbage aphid numbers also declined to a third of last week, only increasing at Hereford and Silwood Park.
  • Two currant–lettuce aphids were captured at Inverness.
  • Numbers of willow–carrot aphids decreased to 43% of last week, only increasing at Preston.
  • Pea aphid numbers decreased to around 80% of last week, increasing at five sites.
  • Overall numbers of black bean aphids decreased to around 40% of last week, only increasing at four
    sites, but including a first arrival at Newcastle.

Pest update from Wellesbourne

When the water traps in the swede plot were checked today there were:

  • 13 male and 29 female cabbage root flies
  • 71 bean seed flies
  • 25 flea beetles
  • 267 pollen beetles
  • 10 cabbage stem weevils
  • 165 cabbage stem flea beetles
  • 0 cabbage seed weevils

There were 232 carrot flies on the 3 sticky traps in the new plot for 2019.

14 cabbage root fly eggs were laid between 30 July and 2nd August (around 15 plants).

Four diamond-back moths, 3 turnip moths, no silver Y moths and no cabbage moths were captured in pheromone traps. There are 2 traps for each species.

We also caught 2 diamond-back moths on 5 carrot fly traps.


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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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