All entries for Tuesday 26 September 2017
September 26, 2017
Pest update from Wellesbourne
Between Friday and today we found the following:
On 3 sticky traps:
- 100 carrot flies
In 3 water traps in a plot of swedes.
- 36 male cabbage root flies and 13 females
- 26 bean seed flies
- 10 pollen beetles
- 2 flea beetles
- 1 cabbage stem weevil
- 1 cabbage sten flea beetle
We recovered 0 cabbage root fly eggs from the soil around 15 cauliflower plants (new plants).
We caught no 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 |
|||
04/9-10/9/2017 |
Suction trap |
4 |
0% |
11/9-14/9/2017 |
Yellow water traps |
0 |
- |
14/9-18/9/2017 |
Yellow water traps |
1 |
0% |
Kirton, Lincolnshire |
|||
04/9-10/9/2017 |
Suction trap |
6 |
83% |
Spalding, Lincolnshire |
|||
11/9-14/9/2017 |
Yellow water traps |
1 |
0% |
14/9-18/9/2017 |
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.