All entries for Friday 18 July 2014

Pest update from Wellesbourne

Between Monday (14th) and Friday (18th) we found:

• 23 carrot flies on traps in this year's carrots (3 traps)
• Total of 167 cabbage root fly eggs from around 15 cauliflower plants.
• There was 1 diamond-back moth, no silver Y moths and no turnip moths (2 traps per species).

The 3 yellow water traps caught:

3 male and 67 female cabbage root flies

• 16 bean seed flies
• 6 pollen beetles
• 42 flea beetles
• 3 cabbage stem weevils

Rosemary Collier : 18 Jul 2014 17:22 |  Comments (0) |  Close comments |  Report a problem

Rothamsted suction trap captures for week ending 13 July

In the week ending 13^th July, aphid flight activity, as monitored by the suction-traps, continued to decline slowly in England, with the exception of the grain aphid coming off ripening cereals. In Scotland things were somewhat more active right across the board.

• Numbers of the peach–potato aphid (Myzus persicae) fell almost everywhere this week.

• The potato aphid (Macrosiphum euphorbiae) was caught in low numbers at four sites.

• The pea aphid (Acyrthosiphon pisum) has been caught at ten sites with hotspots at Writtle (64) and Dundee (23).

• The mealy cabbage aphid (Brevicoryne brassicae) was caught at eight sites in low numbers.

• The black bean aphid, (Aphis fabae), was caught at ten sites and numbers are generally increasing with a hotspot at Writtle (33).

• The currant-lettuce aphid (Nasonovia ribisnigrii) was caught in low numbers at 3 sites (maximum 3 at Elgin).
• The willow carrot aphid was caught at eight sites this week, with numbers low everywhere.

2014webbulletin15.pdfahdb_aphid_news_20140718.pdf

Rosemary Collier : 18 Jul 2014 17:02 |  Comments (0) |  Close comments |  Report a problem