All entries for Friday 28 April 2017

Pest update from Wellesbourne

Between Tuesday and today we caught:

On 3 sticky traps in each of our carrot plots:

• 109 carrot flies - overwintered carrots
• 2 carrot flies - spring-sown carrots

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

• 23 male cabbage root flies and 2 females
• 51 bean seed flies
• 16 pollen beetles
• 4 flea beetles

We also recovered 70 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 : 28 Apr 2017 15:53 |  Comments (0) |  Close comments |  Report a problem

AHDB Aphid News

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

• Despite the cool conditions, the total number of aphids flying and species diversity have started to increase this bulletin week.
• Peach–potato aphids were caught at four sites this bulletin week (Kirton 1, Hereford 1, Silwood 1 and Starcross 2), including first arrivals at two sites some two to three weeks earlier than forecast.
• Willow ̶carrot aphids were caught at six sites across central and southern England. Three of these individuals were first arrivals (Hereford, Rothamsted and Writtle) and all three were close to the ten-year means. The first parsnip aphids (Cavariella theobaldi) of the year were caught this week (Rothamsted 2, Silwood 1, Wellesbourne 1, Writtle 3 and Wye 1).
• The first small flushes of the potato aphid (Macrosiphum euphorbiae) and the black bean aphid (Aphis fabae) have also been caught this week.
  

Rosemary Collier : 28 Apr 2017 14:50 |  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 : 28 Apr 2017 08:38 |  Tags: Aphid Tuyv |  Comments (0) |  Close comments |  Report a problem