All entries for September 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 : 14 Sep 2016 11:15 |  Tags: Aphid Tuyv |  Comments (0) |  Close comments |  Report a problem

Latest information Rothamsted suction trap captures

A new edition of the Rothamsted Insect Survey Aphid Bulletin has been published (week ending 4th September). The relevant edition of AHDB News is here.

• The peach–potato aphid (Myzus persicae) was caught at six sites. Overall numbers have increased this bulletin week.
• The willow ̶carrot aphid (Cavariella aegopodii) was caught in low numbers at two sites this week.
• Two currant-lettuce aphids (Nasonovia ribisnigri) were caught at Wellesbourne.
• Parsnip aphids (Cavariella pastinaceae) were caught at: Rothamsted 3, Writtle 1, Starcross 1,Cavariella theobaldi at: Broom's Barn 1, Writtle 2, Wye 4 and Starcross 1).
• The black bean aphid was caught at eight sites with highest numbers at Edinburgh (9).
• The pea aphid was caught at 11 sites. Numbers were mostly lower this bulletin week.

Rosemary Collier : 09 Sep 2016 16:22 |  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 = 0

On 3 sticky traps:

• Carrot fly = 28 (in second sowing)

In 3 water traps:

• Cabbage root fly males = 3
• Cabbage root fly females = 21
• Bean seed flies = 7
• Flea beetles = 17
• Pollen beetles = 0
• Small white butterfly = 2
• Large white butterfly = 0
• Cabbage stem weevil = 0

Cabbage root fly eggs = 14 (15 plants)

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

Rosemary Collier : 09 Sep 2016 15:22 |  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 = 18 (in second sowing)

In 3 water traps:

• Cabbage root fly males = 2
• Cabbage root fly females = 30
• Bean seed flies = 9
• Flea beetles = 14
• Pollen beetles = 0
• Small white butterfly = 8
• Large white butterfly = 0
• Cabbage stem weevil = 0

Cabbage root fly eggs = 12 (15 plants)

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

Rosemary Collier : 06 Sep 2016 16:49 |  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 : 06 Sep 2016 10:02 |  Tags: Aphid Tuyv |  Comments (0) |  Close comments |  Report a problem

Latest information on suction trap captures

A new edition of the Rothamsted Insect Survey Aphid Bulletin has been published (week ending 28th August). The latest edition of AHDB APHID News is here.

• The peach–potato aphid was caught in low numbers this bulletin week at three sites.
• The willow ̶carrot aphid (Cavariella aegopodii) was caught at eight sites this week, with the highest numbers at Preston (11).
• One currant-lettuce aphid (Nasonovia ribisnigri) was caught at Broom’s Barn.
• Parsnip aphids (Cavariella pastinaceae) were caught at: Edinburgh 1, Preston 12, Broom's Barn 8, Rothamsted 1, Ascot 4 and Wye 2, Cavariella theobaldi at: Kirton 2, Writtle 2, Ascot 2, Wye 2 and Starcross 1).
• The black bean aphid (Aphis fabae) was caught at six sites, with highest numbers at Edinburgh (11).
• The pea aphid was caught at 11 sites, with highest numbers at Kirton (25).
  

Rosemary Collier : 05 Sep 2016 15:28 |  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 = 0

On 3 sticky traps:

• Carrot fly = 27 (in second sowing)

In 3 water traps:

• Cabbage root fly males = 0
• Cabbage root fly females = 18
• Bean seed flies = 6
• Flea beetles = 8
• Pollen beetles = 0
• Small white butterfly = 1
• Large white butterfly = 0
• Cabbage stem weevil = 0

Cabbage root fly eggs = 46 (15 plants)

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

Rosemary Collier : 02 Sep 2016 15:38 |  Comments (0) |  Close comments |  Report a problem