All entries for Friday 09 September 2016

Latest information Rothamsted suction trap captures

A new edition of the Rothamsted Insect Survey Aphid Bulletin has been published (week ending 4th September). The relevant edition of AHDB News is here.

• The peach–potato aphid (Myzus persicae) was caught at six sites. Overall numbers have increased this bulletin week.
• The willow ̶carrot aphid (Cavariella aegopodii) was caught in low numbers at two sites this week.
• Two currant-lettuce aphids (Nasonovia ribisnigri) were caught at Wellesbourne.
• Parsnip aphids (Cavariella pastinaceae) were caught at: Rothamsted 3, Writtle 1, Starcross 1,Cavariella theobaldi at: Broom's Barn 1, Writtle 2, Wye 4 and Starcross 1).
• The black bean aphid was caught at eight sites with highest numbers at Edinburgh (9).
• The pea aphid was caught at 11 sites. Numbers were mostly lower this bulletin week.

Rosemary Collier : 09 Sep 2016 16:22 |  Comments (0) |  Close comments |  Report a problem

Pest update from Wellesbourne

Since Tuesday we have captured:

In pheromone traps (2 per species):

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

On 3 sticky traps:

• Carrot fly = 28 (in second sowing)

In 3 water traps:

• Cabbage root fly males = 3
• Cabbage root fly females = 21
• Bean seed flies = 7
• Flea beetles = 17
• Pollen beetles = 0
• Small white butterfly = 2
• Large white butterfly = 0
• Cabbage stem weevil = 0

Cabbage root fly eggs = 14 (15 plants)

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

Rosemary Collier : 09 Sep 2016 15:22 |  Comments (0) |  Close comments |  Report a problem