All entries for Friday 17 June 2016

Update on captures by Rothamsted suction traps

The latest edition of AHDB Aphid News has just been released and the most recent information about aphid captures is here - for captures in the week ending 12th June.

• Numbers of peach–potato aphids rose significantly with big hotspots at Wellesbourne (800) and Hereford (226) and high numbers generally across much of central England.
• The cabbage aphid was caught at 11 sites, with two discrete hotspots at Wellesbourne (1050) and Hereford (907).
• The willow ̶carrot aphid was caught at all sites, with numbers increasing at 11 sites and a big hotspot at Preston (818).
• The pea aphid was caught at ten sites, with numbers increasing at nine sites and a hotspot at Wellesbourne (98).
• Starcross continues as a very distinctive hotspot for black bean aphids, so far elsewhere it has been reluctant to visit the suction-traps.
• The currant-lettuce aphid (Nasonovia ribisnigri) was caught at Dundee and Kirton.
• Numbers of parsnip aphids increased, particularly at Preston (Cavariella pastinaceae at Preston 120, Wellesbourne 20, York 8 and Silwood 2; Cavariella theobaldi at Preston 20).
  

Rosemary Collier : 17 Jun 2016 16:49 |  Comments (0) |  Close comments |  Report a problem

Update on pest numbers at Wellesbourne

Since Tuesday we have captured:

In pheromone traps (2 per species):

• Turnip moth = 14
• Silver Y moth = 2
• Cabbage moth = 0
• Diamond-back moth = 28

On 3 sticky traps:

• Carrot fly = 5

In 3 water traps:

• Cabbage root fly males = 0
• Cabbage root fly females = 6
• Bean seed flies = 24
• Flea beetles = 3
• Pollen beetles = 12
• Cabbage stem weevils = 0
• Cabbage seed weevils = 0

Cabbage root fly eggs = 8 (15 plants)

Rosemary Collier : 17 Jun 2016 16:42 |  Comments (0) |  Close comments |  Report a problem