All entries for Friday 29 September 2017
September 29, 2017
The latest edition of AHDB Aphid News has just been released.
Peach–potato aphids (Myzus persicae) were caught and increasing in number at nine suction trap sites. The highest number caught was from the suction trap at Wellesbourne (23).
- Mealy cabbage aphids (Brevicoryne brassicae) were caught at Kirton (5) and Writtle (1) suction trap sites.
- Monitoring brassica crops for aphids would be useful.
- The willow-carrot aphid (Cavariella aegopodii) was caught in five suction-traps this week. numbers have increased most noticeably at Dundee and to a lesser extent at York suction trap sites. A single male individual was caught from Dundee suggesting that the start of the autumn migration back to willows to overwinter may be occurring.
Between Tuesday and today we found the following:
On 3 sticky traps:
- 68 carrot flies
In 3 water traps in a plot of swedes.
- 37 male cabbage root flies and 13 females
- 13 bean seed flies
- 5 pollen beetles
- 2 flea beetles
- 2 cabbage stem weevils
- 1 cabbage seed weevil
- 7 cabbage stem flea beetles
We recovered 1 cabbage root fly egg from the soil around 15 cauliflower plants.
We caught 2 turnip moths in our pheromone traps.