All entries for Friday 20 June 2014

Pest update Wellesbourne

Between Tuesday (17th) and Friday (20th) we found:

• 24 carrot flies on traps in this year's carrots (3 traps)

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

• 8 male and 26 female cabbage root flies
• 61 bean seed flies
• 120 pollen beetles
• 74 flea beetles

We collected a total of 69 cabbage root fly eggs from around 15 cauliflower plants (planted 15 April).

There were no diamond-back or silvery Y moths but 5 turnip moths (2 traps).

On 18th June there were 4 winged, 10 wingless and 4 parasitised willow-carrot aphids on 3 x 0.5 m lengths of carrot row.

Rosemary Collier : 20 Jun 2014 17:16 |  Comments (0) |  Close comments |  Report a problem

Rothamsted suction trap captures for week ending 15th June

The latest aphid bulletin has just been released 2014webbulletin11.pdfahdb_aphid_news_20140620.pdf. A warm and dry period in the week ending 15th June resulted in good conditions for aphid flight. Natural enemy impact is growing, in particular ladybirds and aphid parasitoids are being reported more frequently.

• Numbers of peach–potato aphid (Myzus persicae) remain high in eastern England. The first Scottish individual has been caught in the suction-trap at Edinburgh.
• The potato aphid (Macrosiphum euphorbiae) was caught across the Country in low numbers.
• The mealy cabbage aphid (Brevicoryne brassicae) was caught at five sites this week in low numbers.
• The numbers of willow carrot aphid (Cavariella aegopodii) are generally unchanged or declining compared to last week.
• The currant-lettuce aphid (Nasonovia ribisnigri) was caught at Rothamsted and Starcross (1 at each location).
• The black bean aphid (Aphis fabae) was caught at 8 sites. Highest numbers were 4 at Rothamsted and 3 at Writtle.

Rosemary Collier : 20 Jun 2014 16:22 |  Comments (0) |  Close comments |  Report a problem