All entries for August 2016

Pest update from Wellesbourne

Since Tuesday we have captured:

In pheromone traps (2 per species):

• Turnip moth = 1
• Silver Y moth = 0
• Cabbage moth = 0
• Diamond-back moth = 0

On 3 sticky traps:

• Carrot fly = 10 (in second sowing)

In 3 water traps:

• Cabbage root fly males = 2
• Cabbage root fly females = 84
• Bean seed flies = 4
• Flea beetles = 33
• Pollen beetles = 3
• Small white butterfly = 3
• Large white butterfly = 0
• Cabbage stem weevil = 1

Cabbage root fly eggs = 142 (15 plants)

On our untreated brassicas there are some cabbage aphid colonies and a developing infestation of cabbage whitefly.

Rosemary Collier : 12 Aug 2016 16:30 |  Comments (0) |  Close comments |  Report a problem

Update on Rothamsted suction trap captures – week ending 7th August

A new edition of the Rothamsted Insect Survey Aphid Bulletin has been published (week ending 7th August). The latest edition of AHDB APHID News is here.

• The peach–potato aphid was caught in ones and twos at seven sites this bulletin week.
• The numbers of willow ̶carrot aphid (Cavariella aegopodii) flying are low everywhere.
• Two currant-lettuce aphids (Nasonovia ribisnigri) were caught at York.
• Numbers of parsnip aphids are low (Cavariella pastinaceae Preston 1, Rothamsted 3, Silwood Park 1 and Wye 1, Cavariella theobaldi Silwood Park 1 and Wye 1).
• Numbers of the black bean aphid (Aphis fabae) remain very low, it was caught at five sites, with highest numbers at Dundee (13).
• The pea aphid was caught at eight sites with highest numbers at Kirton (48).

Rosemary Collier : 12 Aug 2016 15:44 |  Comments (0) |  Close comments |  Report a problem

Pest update for Wellesbourne on 9th August

Since last Friday we have captured:

In pheromone traps (2 per species):

• Turnip moth = 0
• Silver Y moth = 0
• Cabbage moth = 0
• Diamond-back moth = 2

On 3 sticky traps:

• Carrot fly = 17 (in second sowing)

In 3 water traps:

• Cabbage root fly males = 1
• Cabbage root fly females = 110
• Bean seed flies = 7
• Flea beetles = 18
• Pollen beetles = 12
• Small white butterfly = 1
• Large white butterfly = 0
• Cabbage stem weevil = 4

Cabbage root fly eggs = 241 (15 plants)

Rosemary Collier : 10 Aug 2016 08:51 |  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; Simon Jackson, Allium & Brassica Agronomy Ltd.

Angela Hambidge : 09 Aug 2016 14:09 |  Tags: Aphid Tuyv |  Comments (0) |  Close comments |  Report a problem

Update on Rothamsted suction trap captures – week ending 31st July

A new edition of the Rothamsted Insect Survey Aphid Bulletin has been published (week ending 31st July). The latest edition of AHDB APHID News is here.

• Numbers of peach–potato aphid (Myzus persicae) increased very slightly on last week, with the highest numbers at Kirton (11).
• The numbers of willow ̶carrot aphid (Cavariella aegopodii) flying are low everywhere.
• A single currant-lettuce aphid (Nasonovia ribisnigri) was caught at Edinburgh.
• Numbers of parsnip aphids are low (Cavariella pastinaceae Newcastle 1, York 6, Preston 2, Broom's Barn 1, Rothamsted 2, Writtle 1, Wellesbourne 1 and Starcross 3, but no Cavariella theobaldi).
• Numbers of the black bean aphid (Aphis fabae) remain very low, but it was caught at eight sites spread right across the UK this week.
• The pea aphid was caught at nine sites with highest numbers at Kirton (28) and Broom’s Barn (42).

Rosemary Collier : 05 Aug 2016 15:57 |  Comments (0) |  Close comments |  Report a problem

Pest update from Wellesbourne

Since Tuesday we have captured:

In pheromone traps (2 per species):

• Turnip moth = 0
• Silver Y moth = 0
• Cabbage moth = 0
• Diamond-back moth = 2

On 3 sticky traps:

• Carrot fly = 17 (in second sowing)

In 3 water traps:

• Cabbage root fly males = 2
• Cabbage root fly females = 76
• Bean seed flies = 7
• Flea beetles = 13
• Pollen beetles = 11
• Small white butterfly = 0
• Large white butterfly = 1
• Cabbage stem weevil = 0

Cabbage root fly eggs = 194 (15 plants)

Rosemary Collier : 05 Aug 2016 15:56 |  Comments (0) |  Close comments |  Report a problem

Pest update from Wellesbourne

Since Friday we have captured:

In pheromone traps (2 per species):

• Turnip moth = 0
• Silver Y moth = 0
• Cabbage moth = 0
• Diamond-back moth = 1

On 3 sticky traps:

• Carrot fly = 27 (in first sowing of carrots) and 27 (in second sowing)

In 3 water traps:

• Cabbage root fly males = 5
• Cabbage root fly females = 88
• Bean seed flies = 40
• Flea beetles = 16
• Pollen beetles = 25
• Small white butterfly = 0
• Large white butterfly = 0
• Cabbage stem weevil = 3

Cabbage root fly eggs = 500 (15 plants)

Rosemary Collier : 02 Aug 2016 17:19 |  Comments (0) |  Close comments |  Report a problem

Brassica aphids and virus News

Diana Katschnig : 02 Aug 2016 13:46 |  Tags: Aphid Tuyv |  Comments (0) |  Close comments |  Report a problem