October 19, 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

02/10-08/10/2017

Suction trap

7

TBA

09/10-12/10/2017

Yellow water traps

10

TBA

12/10-16/10/2017

Yellow water traps

1

TBA

Kirton, Lincolnshire

02/10-08/10/2017

Suction trap

2

TBA

Spalding, Lincolnshire

09/10-12/10/2017

Yellow water traps

1

TBA

12/10-16/10/2017

Yellow water traps

8

TBA

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.


October 18, 2017

Pest update from Wellesbourne

Between Friday and yesterday we found the following:

On 3 sticky traps:

  • 26 carrot flies

In 3 water traps in a plot of swedes.

  • 12 male cabbage root flies and 0 females
  • 24 bean seed flies
  • 7 pollen beetles
  • 1 cabbage stem weevil
  • 1 cabbage stem flea beetle

We have stopped sampling for cabbage root fly eggs.

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


October 13, 2017

AHDB Aphid News

The latest edition of AHDB Aphid News has just been released.

  • Peach–potato aphids (Myzus persicae) were caught at six suction trap sites and increasing in number at the southernmost sites. The highest number caught was at Wye (47).
  • A single Mealy cabbage aphid (Brevicoryne brassicae) was caught at Wye this week.
  • The willow-carrot aphid (Cavariella aegopodii) was caught in seven suction traps, being found additionally at Broom’s Barn, Wellesbourne and Starcross this week. As well as this; four male individuals were caught at Broom’s Barn this week suggesting that the autumn migration back to willows is continuing.

Pest update from Wellesbourne

Between Tuesday and yesterday we found the following:

On 3 sticky traps:

  • 75 carrot flies

In 3 water traps in a plot of swedes.

  • 20 male cabbage root flies and 5 females
  • 28 bean seed flies
  • 3 pollen beetle
  • 2 flea beetles

We have stopped sampling for cabbage root fly eggs.

We caught 2 silver Y moths in 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

25/9-01/10/2017

Suction trap

11

25%

02/10-05/10/2017

Yellow water traps

0

-

05/10-09/10/2017

Yellow water traps

6

17%

Kirton, Lincolnshire

25/9-01/10/2017

Suction trap

24

50%

Spalding, Lincolnshire

02/10-05/10/2017

Yellow water traps

1

0%

05/10-09/10/2017

Yellow water traps

2

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.


October 10, 2017

Pest update from Wellesbourne

Between Friday and today we found the following:

On 3 sticky traps:

  • 137 carrot flies

In 3 water traps in a plot of swedes.

  • 44 male cabbage root flies and 4 females
  • 18 bean seed flies
  • 9 pollen beetles
  • 1 flea beetle
  • 1 cabbage stem flea beetle
  • 21 cabbage stem weevils

We have stopped sampling for cabbage root fly eggs.

We caught 1 turnip moth in our pheromone traps.


October 07, 2017

Pest update from Wellesbourne

Between Tuesday and yesterday we found the following:

On 3 sticky traps:

  • 228 carrot flies

In 3 water traps in a plot of swedes.

  • 43 male cabbage root flies and 7 females
  • 48 bean seed flies
  • 1 pollen beetle
  • 2 flea beetles

We have stopped sampling for cabbage root fly eggs.

We caught 3 silver Y moths in our pheromone traps.


AHDB Aphid News

The latest edition of AHDB Aphid News has just been published.

  • Peach–potato aphids (Myzus persicae) were caught at twelve suction trap sites. The highest number caught was from the trap at Hereford (42).
  • Mealy cabbage aphids (Brevicoryne brassicae) were caught and increasing in number at Kirton (6), Hereford (1) and Wye (4).
  • The willow-carrot aphid (Cavariella aegopodii) was caught in four sites this week. Numbers have increased most noticeably at Dundee and to a lesser extent at York and Kirton . A further four male individuals were caught from Dundee this week suggesting that the autumn migration back to willows to overwinter is underway

October 05, 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

18/9-24/9/2017

Suction trap

36

0%

25/9-28/9/2017

Yellow water traps

1

100%

28/9-02/10/2017

Yellow water traps

2

0%

Kirton, Lincolnshire

18/9-24/9/2017

Suction trap

13

69%

Spalding, Lincolnshire

25/9-28/9/2017

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.


October 04, 2017

Update from Wellesbourne

Between Friday and today we found the following:

On 3 sticky traps:

  • 200 carrot flies

In 3 water traps in a plot of swedes.

  • 28 male cabbage root flies and 8 females
  • 27 bean seed flies
  • 1 pollen beetle
  • 1 flea beetle
  • 2 cabbage stem weevils

We recovered 0 cabbage root fly eggs from the soil around 15 cauliflower plants.

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



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  • 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
  • Update – Wellesbourne, Warks 31/8–04/9/2017 Water traps 2 aphids 0% carrying TuYV Kirton, Lincs 21/8… by Angela Hambidge on this entry
  • Update – Spalding 29/6–03/7/2017 Water traps 257 aphids 82% carrying TuYV. by Angela Hambidge on this entry
  • Update – Wellesbourne 31/7–03/8/2017 Water traps 1 aphid 0% carrying TuYV Wellesbourne 03/8–07/8/201… by Angela Hambidge on this entry

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