All entries for Friday 16 May 2014

Pest update from Wellesbourne

Between Tuesday (13th) and Friday (16th) we found:

• a whopping 1174 carrot flies on traps in this year's carrots (3 traps) (see yesterday's blog)
• 10 winged and 2 wingless willow-carrot aphids on 3 x 0.5 m lengths of carrot row

In the 3 water traps in the 'new' cauliflower plot:

• 24 male and 36 female cabbage root flies
• 110 bean seed flies
• 26 pollen beetles
• 25 flea beetles - these have increased in number since the last sample was taken
• 9 cabbage stem weevils - also an increase in numbers

We collected a total of 184 cabbage root fly eggs from around 15 cauliflower plants (planted 15 April).

There were no diamond-back or silver Y moths

We have pheromone traps out for European tarnished plant bug and common green capsid - and caught 1 European tarnished plant bug.

Rosemary Collier : 16 May 2014 15:31 |  Comments (0) |  Close comments |  Report a problem

Rothamsted suction trap samples for the week ending 11 May

The 6th issue of AHDB Aphid News has just been released.

Aphid flight activity decreased temporarily this week because of a period of adverse weather, but is sure to be picking up soon. This is still looking like an early, large start to the aphid season.

• The peach–potato aphid (Myzus persicae) was caught at five sites. Field reports of this species on untreated sugar beet and on baby leaf brassicas were received from eastern England.

• Two potato aphids (Macrosiphum euphorbiae) were caught, including a first arrival at Preston.

• Two pea aphids (Acyrthosiphon pisum) were caught at Elgin but none elsewhere this week.

• No cabbage aphids (Brevicoryne brassicae) were found in the UK traps this week, but a field report from eastern England of large numbers on game cover kale was received.

• The willow carrot aphid (Cavariella aegopodii) was caught at six sites in low numbers.
• One currant lettuce aphid (Nasonovia ribisnigri) was caught at Writtle - the first of the year.

Rosemary Collier : 16 May 2014 15:09 |  Comments (0) |  Close comments |  Report a problem