All entries for Friday 08 July 2016

Update on Rothamsted Suction Trap captures – week ending 3 July

A new edition of the Rothamsted Insect Survey Aphid Bulletin has been published (week ending 3rd July). The latest edition of AHDB APHID News is here.

• The currant-lettuce aphid (Nasonovia ribisnigri) was absent.
• The willow ̶ carrot aphid numbers fell at all sites and nowhere were double figures recorded.
• Numbers of parsnip aphids, Cavariella pastinaceae (Newcastle 2; Preston 2) and Cavariella theobaldi (Newcastle 1), are very low
• Numbers of the peach–potato aphid crashed with many sites not recording any numbers at all.
• The potato aphid was recorded as singletons at three sites.
• The cabbage aphid was only recorded at Wellesbourne. This is proving to be a radically different year to 2015.
• Starcross is no longer a hotspot for the black bean aphid. Across the network low numbers of this aphid were recorded.
• Despite low aphid numbers on the wing, prudence is needed. It might well be the case that healthy aphid populations are present on the host. Crop inspection is still recommended.

Rosemary Collier : 08 Jul 2016 16:45 |  Comments (0) |  Close comments |  Report a problem

Pest update from Wellesbourne

Since last Tuesday we have captured:

In pheromone traps (2 per species):

• Turnip moth = 1
• Silver Y moth = 0
• Cabbage moth = 0
• Diamond-back moth = 4

On 3 sticky traps:

• Carrot fly = 1 (in first sowing of carrots) and 8 (in second sowing)

In 3 water traps:

• Cabbage root fly males = 14
• Cabbage root fly females = 40
• Bean seed flies = 96
• Flea beetles = 12
• Pollen beetles = 476
• Cabbage stem weevils = 0
• Small white butterfly = 2

Cabbage root fly eggs = 101 (15 new plants)

Rosemary Collier : 08 Jul 2016 16:37 |  Comments (0) |  Close comments |  Report a problem