December 01, 2017

AHDB Aphid News

The last edition of AHDB News for 2017 has just been published.

  • Single Peach–potato aphids (Myzus persicae) were recorded from York and Wellesbourne.
  • No Mealy cabbage aphids (Brevicoryne brassicae) were recorded this week.
  • Female Willow-carrot aphids (Cavariella aegopodii) were found at two sites this week with one male individual recorded from Preston.

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

23/10-29/10/2017

Suction trap

24

14%

30/10-05/11/2017

Suction trap

13

0%

30/10-06/11/2017

Yellow water traps

3

0%

06/11-13/11/2017

Yellow water traps

1

0%

Kirton, Lincolnshire

23/10-29/10/2017

Suction trap

9

100%

30/10-05/11/2017

Suction trap

0

-

Spalding, Lincolnshire

23/10-30/10/2017

Yellow water traps

0

-

30/10-06/11/2017

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.


November 18, 2017

AHDB Aphid News

The latest edition of AHDB Aphid News has been published.

Peach–potato aphids (Myzus persicae) were recorded from six suction trap sites, increasing in number at two sites. The highest number was found at Writtle (10).

No Mealy cabbage aphids (Brevicoryne brassicae) were recorded this week.

The willow-carrot aphid (Cavariella aegopodii) was found at three sites this week. Nine male individuals were recorded across the country suggesting that the autumn migration back to willows is continuing.


Pest update from Wellesbourne

Between Tuesday, 7th and Teusday 14th November we found the following:

On 3 sticky traps:

  • 2 carrot flies

We caught 1 turnip moth in our pheromone traps.


November 10, 2017

AHDB Aphid News

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

  • Peach–potato aphids (Myzus persicae) were caught at seven suction trap sites, increasing in number at two sites. The highest numbers caught were from the suction traps at Wellesbourne (18) and Writtle (18).
  • No mealy cabbage aphids (Brevicoryne brassicae) were caught in the suction traps this week.
  • The willow-carrot aphid (Cavariella aegopodii) was caught in five suction traps this week. 174 male individuals were caught in suction traps across the country suggesting that the autumn migration back to willows is still continuing.

November 09, 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

23/10-29/10/2017

Suction trap

12

TBA

30/10-06/11/2017

Yellow water traps

3

TBA

Kirton, Lincolnshire

23/10-29/10/2017

Suction trap

5

TBA

Spalding, Lincolnshire

23/10-30/10/2017

Yellow water traps

TBA

TBA

30/10-06/11/2017

Yellow water traps

TBA

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.


November 08, 2017

Pest update from Wellesbourne

Between Friday and yesterday (7 November) we found the following:

On 3 sticky traps:

  • 1 carrot fly

In 3 water traps in a plot of swedes.

  • No cabbage root flies
  • 13 bean seed flies
  • 2 pollen beetles

We have stopped sampling for cabbage root fly eggs.

We caught 2 silver Y moths in our pheromone traps.

We removed all but the carrot fly traps yesterday. We'll keep the carrot fly traps out throught the winter to understand a bit more about their overwintering biology.


November 06, 2017

AHDB Aphid News

The latest edition of AHDB Aphid News is now available.

  • Peach–potato aphids (Myzus persicae) were caught at nine suction trap sites, increasing in number in eight traps. The highest number caught was from Writtle (35).
  • Mealy cabbage aphids (Brevicoryne brassicae) were caught in the traps at Kirton (4) and Wye (4).
  • The willow-carrot aphid (Cavariella aegopodii) was caught in five sites this week. 95 male individuals were caught across the country indicating that the autumn migration back to willows is continuing.

Pest update from Wellesbourne

Between Tuesday and Friday (3 November) we found the following:

On 3 sticky traps:

  • 12 carrot flies

In 3 water traps in a plot of swedes.

  • 1 male cabbage root fly and 1 female
  • 2 bean seed flies
  • 1 flea beetle

We have stopped sampling for cabbage root fly eggs.

We caught no moths in our pheromone traps.


November 03, 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

16/10-22/10/2017

Suction trap

12

33%

23/10-30/10/2017

Yellow water traps

4

0%

Kirton, Lincolnshire

16/10-22/10/2017

Suction trap

26

33%

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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