All entries for Saturday 27 August 2016

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