All entries for Friday 12 June 2015

Aphid bulletins

The latest editions of the Rothamsted Suction Trap Bulletin and AHDB Aphid News are attached. The information of interest to vegetable and salad growers is as follows. The information below relates to suction-trap samples collected during Bulletin Week 9: 01/6 – 07/6. The weather this bulletin week was several degrees warmer and aphid numbers in the suction-traps have significantly increased in response.

• Numbers of the peach–potato aphid (Myzus persicae) are building with highest numbers in eastern England.
• The potato aphid (Macrosiphum euphorbiae) was caught at eight sites this week in low numbers.
• Field reports indicate both peach–potato aphid and potato aphid in potatoes in Essex.
• Numbers of the willow ̶ carrot aphid (Cavariella aegopodii) have increasedat 12/14 sites this week, with highest numbers in eastern England.
• The mealy cabbage aphid (Brevicoryne brassicae) was caught at eight sites this week, with a first arrival at Wye (3/6). There were hotspots atWellesbourne (63), Kirton (35) and Writtle (28).
• The pea aphid (Acyrthosiphon pisum) was caught at seven sites this week,with a first arrival at Hereford (5/6), and a hotspot at Starcross (18), plus field reports of pea aphids in Kent and some PGRO field trials.
• The black bean aphid (Aphis fabae) has been caught at six sites this week, with field reports from beans and courgettes in Kent and Warwickshire.
• A single currant-lettuce aphid (Nasonovia ribisnigri) was caught at Kirton(1/6).

ahdb-aphid-news-120615.pdf bulletin_09_2015.pdf

Rosemary Collier : 12 Jun 2015 15:50 |  Comments (0) |  Close comments |  Report a problem

Pest update from Wellesbourne

Today we found:

• 0 male and 6 female cabbage root flies (3 water traps)
• 21 bean seed flies (3 traps)
• 48 carrot flies (3 traps) in our new carrots
• 2 cabbage root fly eggs (15 cauliflower plants)
• 10 turnip moths (2 traps)
• 10 diamond-back moths
• 2 flea beetles (3 traps)
• 1 pollen beetle (3 traps)
• 1 cabbage stem weevil (3 traps)

Rosemary Collier : 12 Jun 2015 14:20 |  Comments (0) |  Close comments |  Report a problem