All entries for August 2016

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 : 31 Aug 2016 09:36 |  Tags: Aphid Tuyv |  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 = 2

On 3 sticky traps:

• Carrot fly = 18 (in second sowing)

In 3 water traps:

• Cabbage root fly males = 2
• Cabbage root fly females = 21
• Bean seed flies = 9
• Flea beetles = 16
• Pollen beetles = 1
• Small white butterfly = 3
• Large white butterfly = 0
• Cabbage stem weevil = 0

Cabbage root fly eggs = 17 (15 plants)

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

Rosemary Collier : 30 Aug 2016 16:34 |  Comments (0) |  Close comments |  Report a problem

Captures of aphids in Rothamsted suction traps

A new edition of the Rothamsted Insect Survey Aphid Bulletin has been published (week ending 21st August). The latest edition of AHDB APHID News is here.

• The peach–potato aphid was caught at five sites in low numbers 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 Newcastle 1, Preston 2, Kirton 2, Rothamsted 1, Ascot 1 and Wye 3, Cavariella theobaldi Rothamsted 1, Wye 2 and Starcross 1).
• The black bean aphid (Aphis fabae) was caught at three sites with a hotspot at Edinburgh (24).
• The pea aphid was caught at ten sites with highest numbers at Hereford (14).

Rosemary Collier : 27 Aug 2016 12:33 |  Comments (0) |  Close comments |  Report a problem

Pest update for Friday, 26th August

Since Friday we have captured:

In pheromone traps (2 per species):

• Turnip moth = 0
• Silver Y moth = 0
• Cabbage moth = 0
• Diamond-back moth = 8

On 3 sticky traps:

• Carrot fly = 9 (in second sowing)

In 3 water traps:

• Cabbage root fly males = 1
• Cabbage root fly females = 27
• Bean seed flies = 6
• Flea beetles = 39
• Pollen beetles = 18
• Small white butterfly = 1
• Large white butterfly = 0
• Cabbage stem weevil = 1

Cabbage root fly eggs = 30 (15 plants)

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

Rosemary Collier : 27 Aug 2016 12:27 |  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 = 0

On 3 sticky traps:

• Carrot fly = 21 (in second sowing)

In 3 water traps:

• Cabbage root fly males = 2
• Cabbage root fly females = 12
• Bean seed flies = 3
• Flea beetles = 28
• Pollen beetles = 4
• Small white butterfly = 3
• Large white butterfly = 0
• Cabbage stem weevil = 0

Cabbage root fly eggs = 50 (15 plants)

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

Rosemary Collier : 23 Aug 2016 20:49 |  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 : 23 Aug 2016 09:54 |  Tags: Aphid Tuyv |  Comments (0) |  Close comments |  Report a problem

Captures of aphids in Rothamsted suction traps

A new edition of the Rothamsted Insect Survey Aphid Bulletin has been published (week ending 14th August). The latest edition of AHDB APHID News is here.

• The peach–potato aphid was caught in ones and twos at four sites this bulletin week.
• The numbers of willow ̶carrot aphid (Cavariella aegopodii) flying are low everywhere.
• Three currant-lettuce aphids (Nasonovia ribisnigri) were caught at Starcross.
• Numbers of parsnip aphids are low (Cavariella pastinaceae York 2, Broom's Barn 2, Rothamsted 7 and Ascot 4, Cavariella theobaldi Starcross 1).
• Numbers of the black bean aphid (Aphis fabae) remain very low, it was caught at five sites, with highest numbers at Dundee (6).
• The pea aphid was caught at nine sites with highest numbers at Kirton (22).

Rosemary Collier : 20 Aug 2016 08:32 |  Comments (0) |  Close comments |  Report a problem

Pest update for Friday 19th August

Since Tuesday we have captured:

In pheromone traps (2 per species):

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

On 3 sticky traps:

• Carrot fly = 19 (in second sowing)

In 3 water traps:

• Cabbage root fly males = 3
• Cabbage root fly females = 12
• Bean seed flies = 3
• Flea beetles = 51
• Pollen beetles = 17
• Small white butterfly = 2
• Large white butterfly = 0
• Cabbage stem weevil = 1

Cabbage root fly eggs = 52 (15 plants)

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

Rosemary Collier : 20 Aug 2016 08:23 |  Comments (0) |  Close comments |  Report a problem

Pest update for Wellesbourne for Tuesday 16th August

Since Friday we have captured:

In pheromone traps (2 per species):

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

On 3 sticky traps:

• Carrot fly = 24 (in second sowing)

In 3 water traps:

• Cabbage root fly males = 0
• Cabbage root fly females = 7
• Bean seed flies = 7
• Flea beetles = 47
• Pollen beetles = 11
• Small white butterfly = 0
• Large white butterfly = 2
• Cabbage stem weevil = 0

Cabbage root fly eggs = 72 (15 plants)

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

Rosemary Collier : 17 Aug 2016 07:47 |  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 : 16 Aug 2016 09:21 |  Tags: Aphid Tuyv |  Comments (0) |  Close comments |  Report a problem