All entries for Friday 19 June 2015

More on Aphid and TuYV News!

The data on Aphid and TuYV news below are being collected as part of a new BBSRC HAPI project led by Dr John Walsh. Peach potato aphids from the Rothamsted Insect Survey suction traps at Wellesbourne, Warwickshire and Kirton, Lincolnshire and yellow water traps adjacent to cabbage crops in Warwickshire and Lincolnshire are being tested for the presence of Turnip yellows virus (TuYV; formerly known as Beet western yellows virus). The virus has been shown to significantly reduce yields of vegetable brassicas, cause tipburn in cabbage and also infect oilseed rape. This is part of a new BBSRC HAPI research project led by Dr John Walsh at the University of Warwick. The project involves a collaboration with colleagues at Rothamsted Research and Allium and Brassica Agronomy and will investigate the development of integrated approaches, including genomic aspects, for pest and disease control in horticultural field crops Press release on the new round of HAPI projects involving the University of Warwick. Most of the funding comes from BBSRC http://www.bbsrc.ac.uk/news/food-security/2015/150601-n-4m-fund-important-food-crops/ with additional funding from industry partners including AHDB Horticulture, Syngenta UK Ltd., Dow Agro Sciences Ltd., A L Tozer Ltd., Sakata UK Ltd., Enza Zaden UK Ltd. B.V. and Rijk Zwaan UK Ltd.

Over the next 3 years, weekly information on the numbers of peach potato trapped and the numbers carrying TuYV will be posted on the AHDB Horticulture Pest Blog.

Diana Katschnig : 19 Jun 2015 16:29 |  Tags: Aphid Tuyv |  Comments (0) |  Close comments |  Report a problem

Updated aphid bulletins

The latest editions of the Rothamsted Suction Trap Bulletin and AHDB Aphid News are attached. The information of interest to vegetable and salad growers is as follows:

The information below relates to suction-trap samples collected during bulletin week 10: 08/6 – 14/6. The weather this bulletin week was seasonably warm and aphid numbers in the suction-traps have increased, despite a wet weekend.

• Numbers of the peach–potato aphid (Myzus persicae) have increased at 8/14 sites, with highest numbers in central and southern England.

• The potato aphid (Macrosiphum euphorbiae) was caught at nine sites this week in low numbers, with small hotspots at Hereford (17) and Writtle (11).

• The willow ̶ carrot aphid (Cavariella aegopodii) was caught in all our traps this week, but numbers are decreasing in 8/14 sites. Numbers were highest at Rothamsted (321) and Silwood (288).

• The mealy cabbage aphid (Brevicoryne brassicae) was caught at six sites this week, with hotspots at Wellesbourne (162) and Hereford (38).

• The pea aphid (Acyrthosiphon pisum) was caught at seven sites this week, with hotspots at Silwood (10) and Wye (20).

• The black bean aphid (Aphis fabae) has been caught at eight sites this week in low numbers.

• No currant-lettuce aphids (Nasonovia ribisnigri) were caught this week.

ahdb-aphid-news-10-.pdf bulletin_10_2015.pdf

Rosemary Collier : 19 Jun 2015 15:21 |  Comments (0) |  Close comments |  Report a problem

Pest update from Wellesbourne

Today we found:

• 1 male and 27 female cabbage root flies (3 water traps)
• 31 bean seed flies (3 traps)
• 20 carrot flies (3 traps) in our new carrots
• 19 cabbage root fly eggs (15 cauliflower plants)
• 12 turnip moths (2 traps)
• 44 flea beetles (3 traps) - NOTE THE INCREASE IN NUMBERS SINCE LAST TIME!
• 1 pollen beetle

Rosemary Collier : 19 Jun 2015 14:34 |  Comments (0) |  Close comments |  Report a problem

Aphid and TuYV News

Brassica virus and peach potato aphid update from Wellesbourne, Warwickshire:

• 04–08/06/2015, high numbers of M. persicae were caught (12 yellow water traps), 73% of those tested were carrying TuYV.
• 08-11/06/2015, 60 M. persicae were caught (12 yellow water traps), 73% of those tested were carrying TuYV.
• From the Rothamsted Insect Survey suction trap catch, 03-07/06/2015, 15 M. persicae were identified, 60% of these were carrying TuYV.

Brassica virus and peach potato aphid update from Kirton, Lincolnshire:

• 04–08/06/2015, 74 M. persicae were caught (12 yellow water traps), 76% of those tested were carrying TuYV.
• 08-11/06/2015, 13 M. persicae were caught (12 yellow water traps), 31% of these were carrying TuYV.
• From the Rothamsted Insect Survey suction trap catch, 03-07/06/2015, 14 M. persicae were identified, 71% of these were carrying 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 with funding from the BBSRC Horticulture And Potato Initiative (HAPI).

Diana Katschnig and Angela Hambidge, Plant-Virus Interactions Group, University of Warwick

Diana Katschnig : 19 Jun 2015 10:04 |  Tags: Aphid Tuyv |  Comments (0) |  Close comments |  Report a problem