All entries for Friday 12 August 2016

Pest update from Wellesbourne

Since Tuesday we have captured:

In pheromone traps (2 per species):

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

On 3 sticky traps:

• Carrot fly = 10 (in second sowing)

In 3 water traps:

• Cabbage root fly males = 2
• Cabbage root fly females = 84
• Bean seed flies = 4
• Flea beetles = 33
• Pollen beetles = 3
• Small white butterfly = 3
• Large white butterfly = 0
• Cabbage stem weevil = 1

Cabbage root fly eggs = 142 (15 plants)

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

Rosemary Collier : 12 Aug 2016 16:30 |  Comments (0) |  Close comments |  Report a problem

Update on Rothamsted suction trap captures – week ending 7th August

A new edition of the Rothamsted Insect Survey Aphid Bulletin has been published (week ending 7th August). The latest edition of AHDB APHID News is here.

• The peach–potato aphid was caught in ones and twos at seven sites 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 Preston 1, Rothamsted 3, Silwood Park 1 and Wye 1, Cavariella theobaldi Silwood Park 1 and Wye 1).
• Numbers of the black bean aphid (Aphis fabae) remain very low, it was caught at five sites, with highest numbers at Dundee (13).
• The pea aphid was caught at eight sites with highest numbers at Kirton (48).

Rosemary Collier : 12 Aug 2016 15:44 |  Comments (0) |  Close comments |  Report a problem