All entries for April 2014

Wellesbourne pest update

Since Friday we have captured:

• 191 carrot flies on traps in the overwintered carrots (3 traps)
• 313 carrot flies on traps in newly-emerged carrots (3 traps)

In the 3 water traps:

• 66 male and 17 female cabbage root flies
• 309 bean seed flies
• 2 pollen beetles
• 1 flea beetle

We collected a total of 11 cabbage root fly eggs from around 15 cauliflower plants (planted 15 April).

We caught one diamond-back moth (2 pheromone traps)

We have pheromone traps out for European tarnished plant bug and common green capsid - and caught 4 European tarnished plant bugs.

Rosemary Collier : 29 Apr 2014 13:47 |  Comments (0) |  Close comments |  Report a problem

Pest update

Since Tuesday we have captured:

• 112 carrot flies on traps in the overwintered carrots (3 traps)
• 37 carrot flies on traps in newly-emerged carrots (3 traps)

In the 3 water traps:

• 41 male and 14 female cabbage root flies
• 168 bean seed flies
• 7 pollen beetles

We collected a total of 7 cabbage root fly eggs from around 15 cauliflower plants (planted 15 April).

We caught one diamond-back moth (2 pheromone traps)

We have pheromone traps out for European tarnished plant bug and common green capsid - and caught nothing.

Rosemary Collier : 25 Apr 2014 17:35 |  Comments (0) |  Close comments |  Report a problem

Rothamsted suction trap captures

The 3rd issue of AHDB Aphid News has just been released:ahdb_aphid_news_20140425.pdf

The numbers of early aphids in our suction-trap samples have not significantly increased during Bulletin Week 3: 14/4-20/4, but the spread across the country is widening.

• Four peach–potato aphids were caught this week (Preston, Broom’s Barn, Writtle and Wye). The first arrival at Preston was six weeks earlier and at Writtle two weeks earlier than the 10-year mean.
• Two potato aphids (Macrosiphum euphorbiae) were caught, including a first arrival at Hereford, three weeks earlier than the 10-year mean.
• This year’s first pea aphid (Acyrthosiphon pisum) was caught at Wye, a month earlier than the 10-year mean.
• No cabbage aphids (Brevicoryne brassicae), or willow carrot aphids (Cavariella aegopodii) were caught this week.

Rosemary Collier : 25 Apr 2014 15:27 |  Comments (0) |  Close comments |  Report a problem

Trap captures at Wellesbourne today

Pest numbers have increased a bit since Friday.

Between Friday and Tuesday we caught:

• 40 carrot flies on traps in the overwintered carrots (3 traps)
• 7 carrot flies on traps in newly-emerged carrots (plot shown below) (3 traps)

In the 3 water traps:

• 1 male and 10 female cabbage root flies
• 24 bean seed flies
• 4 pollen beetles
• 3 flea beetles

We collected a total of 5 cabbage root fly eggs from around 15 cauliflower plants (planted 15 April).

We also put out pheromone traps for diamond-back moth, turnip moth, silver Y moth last week and nothing has been captured so far.

We have pheromone traps out for European tarnished plant bug and common green capsid - and caught a total of 12 European tarnished plant bugs (3 traps).

Rosemary Collier : 22 Apr 2014 15:28 |  Comments (0) |  Close comments |  Report a problem

Update on trap captures at Wellesbourne

When the sticky traps at Wellesbourne were checked on Friday (18th) there were:

• 6 carrot flies on traps in the overwintered carrots (3 traps)
• 2 carrot flies on traps in newly-emerged carrots (3 traps)

In the 3 water traps there were:

• 2 male and 3 female cabbage root flies
• 8 bean seed flies
• 6 pollen beetles
• 3 flea beetles

Rosemary Collier : 20 Apr 2014 19:34 |  Comments (0) |  Close comments |  Report a problem

Update on suction trap captures for week ending 13 April.

The most recent edition of AHDB Aphid News has just been published: ahdb_aphid_news_20140417.pdf

More aphids have been captured 'early':

• Four peach–potato aphids were caught (Broom’s Barn 3 and Kirton 1). The first arrival at Broom’s Barn was over four weeks earlier than the 10-year mean.
• A field report from eastern England identified a peach–potato aphid on a sugar beet crop at the cotyledon stage. Further field observations indicate aphids are flying, especially potato aphids.
• Three potato aphids (Macrosiphum euphorbiae) were caught, including first arrivals at Rothamsted and Kirton, four to five weeks earlier than the ten year means.
• The shallot aphid (Myzus ascalonicus) is the most numerous aphid species to date, with particular hotspots at Kirton and Wye.
• No cabbage aphids (Brevicoryne brassicae), willow carrot aphids (Cavariella aegopodii) or pea aphids (Acyrthosiphon pisum) were caught his week.

Rosemary Collier : 17 Apr 2014 16:26 |  Comments (0) |  Close comments |  Report a problem

Trap captures today

When the Wellesbourne traps were checked today there were:

• 5 carrot flies (3 traps)

and in the 3 water traps there were:

• 1 male and 1 female cabbage root fly
• 10 bean seed flies
• 4 pollen beetles
• 16 flea beetles

Rosemary Collier : 15 Apr 2014 17:10 |  Comments (0) |  Close comments |  Report a problem

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

Trap counts on Tuesday, 8th April

Yesterday in our 3 yellow water traps we captured:

• 14 male and 4 female cabbage root flies
• 22 bean seed flies
• 1 pollen beetle

We also caught 1 male carrot fly on our sticky traps (3).

Rosemary Collier : 09 Apr 2014 15:46 |  Tags: Bean Seed Fly Cabbage Root Fly Carrot Fly |  Comments (0) |  Close comments |  Report a problem

Trap counts on Friday 4th April

Captures between 1st and 4th April were:

• 1 male carrot fly (3 sticky traps)

and from 3 yellow water traps:

• 3 male cabbage root fly
• 2 bean seed fly
• 10 pollen beetles
• 4 flea beetles
• 3 cabbage stem weevil

Rosemary Collier : 05 Apr 2014 13:30 |  Comments (0) |  Close comments |  Report a problem