All entries for Friday 19 July 2019
July 19, 2019
When the water traps in the swede plot were checked today there were:
- 70 male and 70 female cabbage root flies
- 34 bean seed flies
- 20 flea beetles
- 293 pollen beetles
- 65 cabbage stem weevils
- 25 cabbage stem flea beetles
- 4 cabbage seed weevils
- 1 small white butterfly
There were 58 carrot flies on the 3 sticky traps in the new plot for 2019.
371 cabbage root fly eggs were laid between 16 and 19 July (around 15 plants).
0 diamond-back moths and 0 turnip moths were captured. No moths were captured in our other pheromone traps (silver Y moth, cabbage moth). There are 2 traps for each species.
We also caught 8 diamond-back moths on 5 carrot fly traps.
- Numbers of peach–potato aphids captured in the network of suction traps increased in Northern Britain.
- Potato aphid numbers almost halved compared to last week, with increases at only Gogarbank and Preston.
- Cabbage aphid numbers also declined overall.
- Single currant–lettuce aphids were recorded from Scottish sites at Inverness and Ayr.
- Willow–carrot aphid numbers decreased overall.
- Pea aphid numbers increased to 144% of those captured last week, with a continued hotspot at Dundee.
- The total number of black bean aphids captured decreased overall.