All entries for August 2017

Pest update from Wellesbourne

Between Tuesday and today we caught:

On 3 sticky traps:

• 20 carrot flies

In 3 water traps in a plot of swedes.

• 112 male cabbage root flies and 36 females
• 40 bean seed flies
• 15 pollen beetles
• 45 flea beetles
• 2 cabbage stem weevils
• 2 cabbage stem flea beetles

We also recovered 0 cabbage root fly eggs from the soil around 15 cauliflower plants (new plants).

We caught 1 turnip moth and 2 silver Y moths in our pheromone traps

Rosemary Collier : 12 Aug 2017 08:07 |  Comments (0) |  Close comments |  Report a problem

Brassica aphids and virus news

The proportion of peach potato aphid (M. persicae) carrying Turnip yellows virus (TuYV)

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.

Diana Katschnig : 10 Aug 2017 11:39 |  Comments (1) |  Close comments |  Report a problem

Pest update from Wellesbourne

Between Friday and today we caught:

On 3 sticky traps:

• 40 carrot flies

In 3 water traps in a plot of swedes.

• 80 male cabbage root flies and 21 females
• 24 bean seed flies
• 49 pollen beetles
• 45 flea beetles
• 7 cabbage stem weevils
• 3 cabbage stem flea beetles

We also recovered 1 cabbage root fly eggs from the soil around 15 cauliflower plants (new plants).

We caught 1 silver Y moth in our pheromone traps.

Rosemary Collier : 08 Aug 2017 18:47 |  Comments (0) |  Close comments |  Report a problem

AHDB Aphid News

The latest edition of AHDB News has been published. This summarises captures for the week ending 30th July.

• Black bean aphids were caught in single figures at four sites this week in the ST as well as across Scotland and Northern England in YWT (yellow-water traps) this week, with the highest number caught in the ST at Newcastle (3).
• Single peach–potato aphids (Myzus persicae) were caught at Gogarbank, Broom’s Barn and Hereford this week. Tests show that up to 43% of these migrants are carrying Turnip yellows virus. Peach–potato aphids were also found in the YWT across Scotland.
• A single mealy cabbage aphid (Brevicoryne brassicae) was caught at Wye this week.
• A single currant-lettuce aphid (Nasonovia ribisnigri) was caught in the ST at Starcross this week.
• Two willow ̶ carrot aphids (Cavariella aegopodii) were caught at Preston this week.
• The parsnip aphid (Cavariella pastinacae) was caught at Broom’s Barn (1), Newcastle (4), Preston (2), Rothamsted (4), Wellesbourne (8), Wye (2) and York (4) this week.
• A single parsnip aphid (Cavariella theobaldi) was caught at Starcross this week.

Rosemary Collier : 04 Aug 2017 15:42 |  Comments (0) |  Close comments |  Report a problem

Pest update from Wellesbourne

Between Tuesday and today we caught:

On 3 sticky traps:

• 91 carrot flies

In 3 water traps in a plot of swedes.

• 28 male cabbage root flies and 11 females
• 13 bean seed flies
• 19 pollen beetles
• 19 flea beetles
• 2 cabbage stem weevils
• 2 cabbage stem flea beetles

We also recovered 2 cabbage root fly eggs from the soil around 15 cauliflower plants (new plants).

We caught 2 silver Y moths in our pheromone traps.

Rosemary Collier : 04 Aug 2017 14:30 |  Comments (0) |  Close comments |  Report a problem

Brassica aphids and virus news

Diana Katschnig : 04 Aug 2017 11:54 |  Tags: Aphid Tuyv |  Comments (0) |  Close comments |  Report a problem

Pest update from Wellesbourne

Between Friday 28th July and Tuesday 1st August we caught:

On 3 sticky traps:

• 84 carrot flies

In 3 water traps in a plot of swedes.

• 17 male cabbage root flies and 9 females
• 36 bean seed flies
• 81 pollen beetles
• 45 flea beetles
• 24 cabbage stem weevils
• 4 cabbage stem flea beetles

We also recovered 1 cabbage root fly egg from the soil around 15 cauliflower plants (new plants).

We caught 1 silver Y moth in our pheromone traps.

Rosemary Collier : 02 Aug 2017 15:45 |  Comments (0) |  Close comments |  Report a problem