Yellow water traps and cabbage root fly eggs at Wellesbourne 2025
These are the numbers of pest insects captured in yellow water traps at Wellesbourne and numbers of cabbage root fly eggs laid on 15 cauliflower plants.
CRF = cabbage root fly; CSFB = cabbage stem flea beetle; cq = cabbage stem weevil; ca = cabbage seed weevil
| CRF males | CRF females | CRF eggs (15 plants) | Bean seed flies | Pollen beetle | Flea beetles | CQ | CA | CSFB | Small white butterfly | Large white butterfly | Ladybird adults | Turnip sawfly | ||
| 24-Mar | 0 | 1 | - | 0 | 128 | 37 | 34 | 1 | 1 | 0 | 0 | 4 | 0 | |
| 31-Mar | 13 | 4 | - | 4 | 10 | 8 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | |
| 07-Apr | 2 | 2 | - | 4 | 15 | 16 | 24 | 0 | 0 | 0 | 0 | 3 | 0 | |
| 10-Apr | 6 | 3 | - | 0 | 14 | 23 | 18 | 15 | 0 | 0 | 0 | 2 | 0 | |
| 14-Apr | 21 | 11 | - | 14 | 8 | 2 | 9 | 3 | 0 | 0 | 0 | 0 | 0 | |
| 17-Apr | 25 | 10 | - | 16 | 28 | 7 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 21-Apr | 13 | 8 | - | 13 | 15 | 7 | 2 | 4 | 0 | 0 | 0 | 1 | 0 | |
| 21-Apr | New swede plot | 24 | ||||||||||||
| 24-Apr | 5 | 5 | - | 11 | 33 | 3 | 3 | 2 | 0 | 0 | 0 | 2 | 0 | |
| 24-Apr | New swede plot | 27 | 3 | 21 | 8 | 2 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 28-Apr | 0 | 5 | - | 0 | 32 | 13 | 19 | 6 | 0 | 0 | 0 | 5 | 0 | |
| 28-Apr | New swede plot | 1 | 0 | 27 | 2 | 7 | 19 | 11 | 0 | 0 | 0 | 0 | 0 | 0 |
| 01-May | 2 | 1 | - | 5 | 31 | 1 | 7 | 1 | 0 | 0 | 0 | 1 | 0 | |
| 01-May | New swede plot | 15 | 2 | 28 | 13 | 0 | 4 | 3 | 1 | 0 | 0 | 0 | 0 | 0 |
| 05-May | 3 | 3 | - | 4 | 22 | 1 | 6 | 4 | 0 | 0 | 0 | 6 | 0 | |
| 05-May | New swede plot | 10 | 1 | 17 | 1 | 3 | 5 | 6 | 0 | 0 | 0 | 0 | 0 | 0 |
| 08-May | 5 | 0 | - | 3 | 0 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 08-May | New swede plot | 0 | 2 | 24 | 1 | 15 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 |
| 12-May | 3 | 0 | - | 2 | 12 | 2 | 4 | 3 | 0 | 0 | 0 | 5 | 0 | |
| 12-May | New swede plot | 3 | 0 | 18 | 1 | 13 | 14 | 8 | 2 | 0 | 0 | 0 | 1 | 0 |
| 15-May | 0 | 0 | - | 4 | 5 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 15-May | New swede plot | 6 | 3 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 19-May | 4 | 0 | - | 0 | 5 | 1 | 3 | 0 | 0 | 1 | 0 | 0 | 0 | |
| 19-May | New swede plot | 4 | 3 | 15 | 15 | 4 | 3 | 2 | 1 | 0 | 0 | 0 | 0 | 0 |
| 22-May | New swede plot | 0 | 1 | 9 | 1 | 109 | 13 | 14 | 5 | 0 | 0 | 0 | 0 | 0 |
| 26-May | New swede plot | 0 | 0 | 0 | 18 | 267 | 52 | 2 | 0 | 0 | 0 | 17 | 4 | |
| 29-May | New swede plot | 4 | 7 | 0 | 1 | 22 | 285 | 12 | 3 | 0 | 0 | 0 | 13 | 1 |
| 02-Jun | New swede plot | 0 | 3 | 1 | 4 | 38 | 316 | 20 | 0 | 1 | 0 | 0 | 13 | 3 |
| 05-Jun | New swede plot | 0 | 8 | 0 | 3 | 144 | 24 | 6 | 0 | 0 | 0 | 0 | 1 | 3 |
| 08-Jun | New swede plot | 0 | 5 | 0 | 1 | 946 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 12-Jun | New swede plot* | 0 | 0 | 3 | 1 | 64 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| 16-Jun | New swede plot* | 1 | 1 | 2 | 1 | 68 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
| 19-Jun | New swede plot* | 2 | 5 | 0 | 1 | 166 | 4 | 16 | 1 | 0 | 0 | 0 | 0 | 0 |
| 23-Jun | New swede plot | 4 | 22 | 1 | 4 | 238 | 63 | 43 | 2 | 3 | 0 | 0 | 20 | 3 |
| 26-Jun | New swede plot | 0 | 28 | 2 | 5 | 69 | 36 | 114 | 0 | 7 | 0 | 0 | 12 | 1 |
| 30-Jun | New swede plot | 1 | 50 | 4 | 12 | 5 | 14 | 57 | 2 | 2 | 0 | 0 | 4 | 0 |
| 03-Jul | New swede plot | 1 | 23 | 3 | 4 | 0 | 20 | 15 | 0 | 3 | 0 | 0 | 1 | 0 |
| 07-Jul | New swede plot | 1 | 67 | 33 (new plants) | 3 | 0 | 37 | 25 | 0 | 0 | 0 | 0 | 2 | 1 |
| 10-Jul | New swede plot | 1 | 14 | 14 | 1 | 3 | 83 | 4 | 0 | 1 | 0 | 0 | 3 | 0 |
| 14-Jul | New swede plot | 1 | 38 | 14 | 8 | 3 | 242 | 21 | 0 | 0 | 0 | 0 | 0 | 5 |
| 17-Jul | New swede plot | 3 | 17 | 26 | 0 | 1 | 580 | 6 | 0 | 1 | 1 | 0 | 1 | 0 |
| 21-Jul | New swede plot | 0 | 12 | 1 | 1 | 2 | 2699 est | 4 | 0 | 2 | 0 | 0 | 0 | 1 |
| 24-Jul | New swede plot | 0 | 1 | 6 | 1 | 0 | 867 | 2 | 0 | 0 | 0 | 0 | 0 | 1 |