All entries for Thursday 26 October 2017

October 26, 2017

Pest update from Wellesbourne

Between Friday (20th) and Tuesday (24th) we found the following:

On 3 sticky traps:

  • 15 carrot flies

In 3 water traps in a plot of swedes.

  • 1 male cabbage root fly and 1 female
  • 41 bean seed flies
  • 10 pollen beetles
  • 1 flea beetle

We have stopped sampling for cabbage root fly eggs.

We caught 2 silver Y moths and 2 turnip moths n our pheromone traps.


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

09/10-15/10/2017

Suction trap

12

0%

16/10-23/10/2017

Yellow water traps

2

50%

Kirton, Lincolnshire

09/10-15/10/2017

Suction trap

21

38%

Spalding, Lincolnshire

16/10-23/10/2017

Yellow water traps

3

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.


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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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