All entries for Friday 11 April 2014

Trap counts on Friday 11th April

In the traps at Wellesbourne that were checked today we found:

• 6 carrot flies (3 traps)

and in 3 water traps:

• 6 male cabbage root flies
• 1 female cabbage root fly
• 11 bean seed flies

The first issue of the AHDB Aphid News ahdb_aphid_news_20140411.pdf has just been released:

The temperature in January and February was considerably higher than the long-term average throughout the country, by 1 to 1.5ºC in the north and around 2°C in the south, leading to expected first aphid flights of two to four weeks earlier than average. So far:

• Three peach–potato aphids (Myzus persicae) have been caught, three to eight weeks earlier than the 10-year mean, the individual at Kirton being particularly early.
• A single potato aphid (Macrosiphum euphorbiae) has been caught at Broom’s Barn almost seven weeks earlier than the 10-year mean.
• A single willow carrot aphid (Cavariella aegopodii) has been caught at Starcross near Exeter, over three weeks earlier than the 10-year mean.
• The shallot aphid (Myzus ascalonicus) is the most numerous aphid species in suction-trap samples to date.
• No cabbage aphids (Brevicoryne brassicae) or pea aphids (Acyrthosiphon pisum) have been caught so far this year.

Rosemary Collier : 11 Apr 2014 21:09 |  Comments (0) |  Close comments |  Report a problem