All entries for Thursday 24 August 2017

August 24, 2017

Brassica aphids and virus News

The proportion of peach potato aphid (M. persicae) carrying Turnip yellows virus (TuYV)

Date

Type of trap

Numbers of M. persicae caught

% of those tested carrying TuYV

Wellesbourne, Warwickshire

07/8-13/8/2017

Suction trap

0

-

14/8-17/8/2017

Yellow water traps

0

-

17/8-21/8/2017

Yellow water traps

0

-

Kirton, Lincolnshire

07/8-13/8/2017

Suction trap

1

TBA

Spalding, Lincolnshire

14/8-17/8/2017

Yellow water traps

0

-

Turnip yellows virus (TuYV), formerly known as Beet western yellows virus, is a very important pathogen of vegetable brassicas and oilseed rape. It is spread by the peach potato aphid (Myzus persicae).

This data is collected as part of project ‘Developing integrated approaches for pest and disease control in horticultural field crops’ with funding from the BBSRC Horticulture And Potato Initiative (HAPI).

Diana Katschnig and Angela Hambidge, Plant-Virus Interactions Group, University of Warwick; Alex Greenslade, Rothamsted Research & Rothamsted Insect Survey; Carl Sharp, Allium & Brassica Agronomy Ltd.


Pest update from Wellesbourne


Between last Friday and Tuesday 22nd August we found the following.

On 3 sticky traps:

  • 4 carrot flies

In 3 water traps in a plot of swedes.

  • 246 male cabbage root flies and 76 females
  • 68 bean seed flies
  • 3 pollen beetles
  • 33 flea beetles
  • 1 cabbage stem weevil
  • 1 cabbage stem flea beetle

We also recovered 31 cabbage root fly eggs from the soil around 15 cauliflower plants (new plants).

We caught no moths in our pheromone 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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