All entries for May 2019
May 31, 2019
Pest update from Wellesbourne
When the water traps in the 2019 swede plot were checked today there were:
- 1 male and 0 femaie cabbage root flies
- 26 bean seed flies
- 51 flea beetles
- 74 pollen beetles
- 8 cabbage stem weevils
- 4 cabbage stem flea beetles
- 1 cabbage seed weevil
There were 92 carrot flies on the 3 sticky traps in the new plot for 2019. We have emoved the traps from the overwintered carrots..
10 cabbage root fly eggs were laid between 28 and 31 May (around 15 plants).
5 turnip moths were captured. No moths were captured in our other pheromone traps (silver Y moth, cabbage moth, diamond-back moth). There are 2 traps for each species.
Rosemary Collier
31 May 2019 22:30
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AHDB Aphid News
The latest edition of AHDB Aphid News is available.
- Peach–potato aphid numbers reached three figures at Broom’s Barn and Rothamsted but declined in northern England.
- Potato aphid numbers have declined across northern Britain but reached double figures at Rothamsted.
- Cabbage aphid numbers increased at seven sites, with a hotspot at Broom’s Barn.
- A single currant–lettuce aphid was captured at Rothamsted.
- Willow–carrot aphid numbers have doubled across Britain this week, reaching three figures at six sites.
- Pea aphid reached double figures at Wellesbourne and Rothamsted this week.
- There was a hotspot for black bean aphids at Rothamsted. Silwood Park also recorded double figures.
Rosemary Collier
31 May 2019 21:54
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May 28, 2019
Pest update from Wellesbourne
When the water traps were checked at Wellesbourne today there were:
Traps in the new swede plot (the traps in the old plot have been removed):
- 1 male and 0 femaie cabbage root flies
- 24 bean seed flies
- 148 flea beetles
- 88 pollen beetles
- 24 cabbage stem weevils
- 9 cabbage stem flea beetles
- 2 cabbage seed weevils
There were 21 carrot flies on the 3 sticky traps in the overwintered carrot plot and 137 flies in a newly-sown plot.
5 cabbage root fly eggs were laid between 24 and 28 May (around 15 plants).
9 turnip moths were captured. No moths were captured in our other pheromone traps (silver Y moth, cabbage moth, diamond-back moth). There are 2 traps for each species.
Rosemary Collier
28 May 2019 17:00
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May 24, 2019
Pest update from Wellesbourne
When the water traps were checked at Wellesbourne today there were:
Traps in the new swede plot (the traps in the old plot have been removed):
- 12 male and 2 femaie cabbage root flies
- 32 bean seed flies
- 258 flea beetles
- 209 pollen beetles
- 23 cabbage stem weevils
- 15 cabbage stem flea beetles
- 7 cabbage seed weevils
There were 19 carrot flies on the 3 sticky traps in the overwintered carrot plot and 380 flies in a newly-sown plot.
26 cabbage root fly eggs were laid between 21 and 24 May (around 15 plants).
Two diamond-back moths were captured. No moths were captured in our other pheromone traps (silver Y moth, cabbage moth, turnip moth). There are 2 traps for each species.
Rosemary Collier
24 May 2019 15:27
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AHDB Aphid News
The latest edition of AHDB Aphid News has been released for the week ending 19 May.
- Peach-potato aphid - captured at 11 sites and numbers have increased across much of England.
- Potato aphid - captured at 14 sites and numbers have increased at 9 sites.
- Cabbage aphid - captured at 4 sites.
- Willow-carrot aphid - captured at 14 sites. Numbers have increased by around 560% across Britain this week, reaching three figures at York and Preston.
- Pea aphid - captured at 7 sites but in single figures.
- Black-bean aphid - 8 sites.
- Currant-lettuce aphid - 2 sites.
Rosemary Collier
24 May 2019 14:34
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May 21, 2019
Pest update from Wellesbourne
When the water traps were checked at Wellesbourne today there were:
Traps in last year's swede plot
- 0 male and 0 femaie cabbage root flies
- 2 bean seed flies
- 19 flea beetles
- 41 pollen beetles
- 8 cabbage stem weevils
- 15 cabbage stem flea beetles
- 4 cabbage seed weevils
Traps in the new swede plot
- 2 male and 0 femaie cabbage root flies
- 18 bean seed flies
- 512 flea beetles
- 101 pollen beetles
- 34 cabbage stem weevils
- 17 cabbage stem flea beetles
- 2 cabbage seed weevils
There were 68 carrot flies on the 3 sticky traps in the overwintered carrot plot and 288 flies in a newly-sown plot.
31 cabbage root fly eggs were laid between 17 and 21 May (around 15 plants).
No moths were captured in our pheromone traps (silver Y moth, cabbage moth, turnip moth and diamond-back moth). There are 2 traps for each species.
Rosemary Collier
21 May 2019 17:12
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May 17, 2019
AHDB Aphid News
The latest edition of AHDB Aphid News has been released for the week ending 12 May.
- Peach-potato aphid - captured at 9 sites
- Potato aphid - captured at 7 sites
- Cabbage aphid - captured at 2 sites
- Willow-carrot aphid - captured at 12 sites
- Pea aphid - captured at 6 sites
- Black-bean aphid - 6 sites
- Currant-lettuce aphid - 2 sites
Species recorded in double figures are the peach–potato aphid, from Broom’s Barn and Wellesbourne, as well as the willow–carrot aphid, from Preston, Wellesbourne, Silwood Park and Starcross.
Rosemary Collier
17 May 2019 15:51
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Pest update from Wellesbourne
When the water traps were checked at Wellesbourne today there were:
Traps in last year's swede plot
- 0 male and 2 femaie cabbage root flies
- 7 bean seed flies
- 12 flea beetles
- 88 pollen beetles
- 9 cabbage stem weevils
- 8 cabbage stem flea beetles
- 9 cabbage seed weevils
Traps in the new swede plot
- 4 male and 0 femaie cabbage root flies
- 17 bean seed flies
- 357 flea beetles
- 66 pollen beetles
- 14 cabbage stem weevils
- 9 cabbage stem flea beetles
- 3 cabbage seed weevils
There were 88 carrot flies on the 3 sticky traps in the overwintered carrot plot and 555 flies in a newly-sown plot.
45 cabbage root fly eggs were laid between 14 and 17 May (around 15 plants).
We caught 1 turnip moth and 1 diamond-back moth. No moths were captured in our other pheromone traps ( silver Y moth, cabbage moth). There are 2 traps for each species.
Rosemary Collier
17 May 2019 15:44
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May 14, 2019
Update from Wellesbourne
When the water traps were checked at Wellesbourne today there were:
Traps in last year's swede plot
- 8 male and 4 femaie cabbage root flies
- 29 bean seed flies
- 23 flea beetles
- 183 pollen beetles
- 23 cabbage stem weevils
- 5 cabbage stem flea beetles
- 7 cabbage seed weevils
- 1 small white butterfly
Traps in the new swede plot
- 13 male and 1 femaie cabbage root flies
- 74 bean seed flies
- 311 flea beetles
- 348 pollen beetles
- 59 cabbage stem weevils
- 15 cabbage stem flea beetles
- 9 cabbage seed weevils
There were 204 carrot flies on the 3 sticky traps in the overwintered carrot plot and 698 flies in a newly-sown plot.
40 cabbage root fly eggs were laid between 10 and 14 May (around 15 plants).
We caught 4 turnip moths in 2 pheromone traps. No moths were captured in our other pheromone traps (diamond-back moth, silver Y moth, cabbage moth).
Rosemary Collier
14 May 2019 18:15
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May 10, 2019
AHDB Aphid News
The latest edition of AHDB Aphid News has been released for the week ending 5 May.
- Peach-potato aphid - captured at 10 sites
- Potato aphid - captured at 8 sites
- Cabbage aphid - captured at 3 sites
- Willow-carrot aphid - captured at 10 sites
- Pea aphid - captured at 9 sites
- Black-bean aphid - 5 sites
- Curraant-lettuce aphid - 4 sites
Species recorded in double figures include the peach–potato aphid from Broom’s Barn and Writtle; the willow-carrot aphid from Preston and Silwood Park; and the black bean aphid from Writtle and Silwood Park.
No samples were received from Newcastle this week.
Rosemary Collier
10 May 2019 20:57
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