All entries for Friday 05 May 2017

AHDB Aphid News – for week ending 30th April

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

• Peach–potato aphids were caught at four sites this bulletin week (Broom’s Barn 1, Rothamsted 4, Wye 1 and Starcross 2), including first arrivals at three sites (five to ten days earlier than forecast).
• Willow ̶carrot aphids were caught at seven sites (Preston 1, Kirton 2, Broom’s Barn 3, Writtle 2, Silwood 8, Wye 1 and Starcross 4). Three of these individuals were first arrivals (Preston, Kirton and Wye) and were close to the ten-year means. Parsnip aphid counts were: Cavariella pastinaceae Wye 1 and Cavariella theobaldi Broom’s Barn 1, Silwood 16 and Starcross 1.
• A single pea aphid was caught at Silwood and a single black bean aphid at Writtle this bulletin week.

Rosemary Collier : 05 May 2017 16:47 |  Comments (0) |  Close comments |  Report a problem

Pest update from Wellesbourne

Between Tuesday and today we caught:

On 3 sticky traps in each of our carrot plots:

• 90 carrot flies - overwintered carrots
• 167 carrot flies - spring-sown carrots

In 4 water traps - 3 near our overwintered swede plot and 1 near some oil seed rape:

• 34 male cabbage root flies and 1 female
• 54 bean seed flies
• 96 pollen beetles
• 8 flea beetles
• 4 cabbage stem weevils
• 2 cabbage seed weevils
• 1 cabbage stem flea beetle

We also recovered 61 cabbage root fly eggs from the soil around 15 cauliflower plants.

We set up pheromone traps for silver Y moth, diamond-back moth and turnip moth on 18th April but none caught so far.

Rosemary Collier : 05 May 2017 16:40 |  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.

Angela Hambidge : 05 May 2017 08:53 |  Tags: Aphid Tuyv |  Comments (0) |  Close comments |  Report a problem