All entries for Friday 13 October 2017
October 13, 2017
AHDB Aphid News
The latest edition of AHDB Aphid News has just been released.
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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.
Rosemary Collier
13 Oct 2017 16:19
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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.
Rosemary Collier
13 Oct 2017 14:28
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Brassica aphids and virus News
The proportion of peach potato aphid (M. persicae) carrying Turnip yellows virus (TuYV)
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Date |
Type of trap |
Numbers of M. persicae caught |
% of those tested carrying TuYV |
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Wellesbourne, Warwickshire |
|||
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25/9-01/10/2017 |
Suction trap |
11 |
25% |
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02/10-05/10/2017 |
Yellow water traps |
0 |
- |
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05/10-09/10/2017 |
Yellow water traps |
6 |
17% |
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Kirton, Lincolnshire |
|||
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25/9-01/10/2017 |
Suction trap |
24 |
50% |
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Spalding, Lincolnshire |
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02/10-05/10/2017 |
Yellow water traps |
1 |
0% |
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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.
Angela Hambidge
13 Oct 2017 09:48
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Tags: Aphid Tuyv
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