All entries for Tuesday 19 May 2015
May 19, 2015
Pest update from Wellesbourne
Yesterday we found:
- 1 male and 22 female cabbage root flies (3 water traps)
- 156 bean seed flies (3 traps)
- 124 carrot flies (3 traps) in our overwintered carrots - flies emerging from pupae in the soil
- 100 carrot flies (3 traps) in our new carrots - flies arriving from emergence site
- 2 flea beetles
- 86 cabbage root fly eggs (15 cauliflower plants)
Rosemary Collier
19 May 2015 09:58
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HDC project FV 416b – cabbage root fly egg counts in Cornwall
The egg counts up to Monday 18th are as follows - they show the mean numbers of eggs found around a sample of 20 plants per location:
| Helston | Hayle | Gwithian | Truro | St Columb | |
| 20-Apr | 0.15 | 1.2 | 0.3 | 0.3 | 0.9 |
| 27-Apr | 0.85 | 12 | 2.1 | 1.15 | 18 |
| 05-May | 0.8 | 12.2 | 8.15 | 3.95 | 4.1 |
| 11-May | 2.55 | 20.1 | 2.8 | 3.05 | 5.65 |
| 18-May | 4.65 | 17.1 | 1.7 | 5.55 | 19.8 |
Rosemary Collier
19 May 2015 08:05
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