All entries for Friday 14 June 2019
June 14, 2019
The latest edition of AHDB Aphid News has been released for the week ending 9th June.
- Peach–potato aphids increased to 235% of those recorded in the previous week. A hotspot at Broom’s Barn approached numbers not recorded until mid-July in 2018
- Potato aphids also more than doubled in numbers across much of Britain, increasing substantially against the 10-year mean at many sites in England.
- Cabbage aphids increased at four sites with a hotspot at Writtle
- Four currant–lettuce aphids were captured at Broom’s Barn
- Willow–carrot aphid numbers declined to 44%, compared with last week, across all but three sites
- Pea aphid numbers increased at seven sites, including a first arrival at Gogarbank.
- Black bean aphid numbers increased at two sites.
When the water traps in the 2019 swede plot were checked today there were:
- 2 male and 3 female cabbage root flies
- 70 bean seed flies
- 1 flea beetle
- 136 pollen beetles
- 2 cabbage stem weevils
- 0 cabbage stem flea beetles
- 0 cabbage seed weevils
There were 4 carrot flies on the 3 sticky traps in the new plot for 2019.
No cabbage root fly eggs were laid between 10 and 14 June (around 15 plants).
15 diamond-back moths were captured. No moths were captured in our other pheromone traps (turnip moth, silver Y moth, cabbage moth, diamond-back moth). There are 2 traps for each species.
We also caught 28 diamond-back moths on the carrot fly traps. There was a large influx of moths into the UK on 12th June.