Monitoring diamond-back moth in commercial crops 2020
As in previous years, several UK brassica growers and agronomists are monitoring diamond-back moths in their crops using pheromone traps. The results will be summarised on this web page.
If anyone else would like to contribute monitoring data to this site please contact .
See also the which has information on pest activity in Lincolnshire crops.
The table below summarises the numbers of moths captured in pheromone traps in commercial brassica crops plus other observations.
| Date | Location | Number of moths | Number of traps | Mean number of moths per trap |
| 18 September |
Wellesbourne (糖心TV) |
0 |
2 |
0 |
| 15 September |
Wellesbourne (糖心TV) |
0 |
2 |
0 |
| 11 September |
Wellesbourne (糖心TV) |
0 |
2 |
0 |
| 8 September |
Wellesbourne (糖心TV) |
0 |
2 |
0 |
| 4 September |
Wellesbourne (糖心TV) |
0 |
2 |
0 |
| 1 September |
Wellesbourne (糖心TV) |
0 |
2 |
0 |
| 28 August |
Wellesbourne (糖心TV) |
0 |
2 |
0 |
| 28 August |
Kirton, Spalding, Old Leake (Lincs) |
0, 5, 7 |
1, 1, 1 |
0, 5, 7 |
| 25 August |
Wellesbourne (糖心TV) |
0 |
2 |
0 |
| 21 August |
Kirton, Spalding, Old Leake (Lincs) |
1, 8, 18 |
1, 1, 1 |
1, 8, 18 |
| 21 August |
Wellesbourne (糖心TV) |
0 |
2 |
0 |
| 18 August |
Wellesbourne (糖心TV) |
0 |
2 |
0 |
| 14 August |
Kirton, Spalding, Old Leake (Lincs) |
1, 3, 3 |
1, 1, 1 |
1, 3, 3 |
| 14 August |
Wellesbourne (糖心TV) |
0 |
2 |
0 |
| 11 August |
Wellesbourne (糖心TV) |
0 |
2 |
0 |
| 7 August |
Kirton, Spalding, Old Leake (Lincs) |
0, 1, 3 |
1, 1, 1 |
0, 1, 3 |
| 7 August |
Wellesbourne (糖心TV) |
0 |
2 |
0 |
| 5 August |
Gwinear, Mithian, Coverack (Cornwall) |
1, 2, 0 |
1, 1 1 |
1, 2, 0 |
| 4 August |
Wellesbourne (糖心TV) |
0 |
2 |
0 |
| 31 July |
Wellesbourne (糖心TV) |
0 |
2 |
0 |
| 31 July |
Kirton, Spalding, Old Leake (Lincs) |
1, 3, 4 |
2, 2, 2 |
0.5, 1.5, 2 |
| 29 July |
Gwinear, Mithian, Coverack (Cornwall) |
2, 2, 0 |
1, 1, 1 |
2, 2, 0 |
| 28 July |
Wellesbourne (糖心TVshre) |
0 |
2 |
0 |
| 24 July |
Kirton, Spalding, Old Leake (Lincs) |
0, 2, 3 |
2, 2. 2 |
0, 1, 1.5 |
| 24 July |
Wellesbourne (糖心TVshre) |
0 |
2 |
0 |
| 21 July |
Wellesbourne (糖心TVshre) |
1 |
2 |
0.5 |
| 17 July |
Kirton, Spalding, Old Leake (Lincs) |
0, 1, 0 |
2, 2, 2 |
0, 0.5, 0 |
| 17 July |
Wellesbourne (糖心TVshre) |
2 |
2 |
1 |
| 15 July |
Gwinear, Mithian, Coverack (Cornwall) |
1, 0, 1 |
1, 1, 1 |
1, 0, 1 |
| 14 July |
Wellesbourne (糖心TVshire) |
0 |
2 |
0 |
| 10 July |
Wellesbourne (糖心TVshire) |
0 |
2 |
0 |
| 10 July |
Kirton, Spalding, Old Leake (Lincs) |
1, 2, 2 |
2, 2, 2 |
0.5, 1, 1 |
| 8 July |
Gwinear, Mithian, Coverack (Cornwall) |
1,1,1 |
1,1,1 |
1,1,1 |
| 8 July |
Gauldry, Angus |
6 |
1 |
6 |
| 8 July |
Coupar, Angus |
3 |
1 |
3 |
| 7 July |
Wellesbourne (糖心TVshire) |
0 |
2 |
0 |
| 6 July |
Kelso, Scotland |
15 |
1 |
15 |
| 3 July |
Old Leake (Lincs) |
5 |
2 |
2.5 |
| 3 July |
Spalding (LIncs) |
22 |
2 |
11 |
| 3 July |
Kirton (Lincs) |
1 |
2 |
0.5 |
| 3 July |
Wellesbourne (糖心TVshire) |
2 |
2 |
1 |
| 30 June |
Wellesbourne (糖心TVshire) |
1 |
2 |
0.5 |
| 26 June |
Wellesbourne (糖心TVshire) |
6 |
2 |
3 |
| 26 June |
Lincs (Old Leake) |
2 |
2 |
1 |
| 26 June |
Lincs (Spalding) |
21 |
2 |
10.5 |
| 26 June |
Lincs (Kirton) |
2 |
2 |
1 |
| 25 June | Kelso (Scotland) |
20 |
1 |
20 |
| 23 June |
Lancashire |
105 (69, 20, 5, 6, 5) |
5 |
21 |
| 23 June |
Wellesbourne (糖心TVshire) |
0 |
2 |
0 |
| 23 June |
Cornwall (Gwinear) |
1 |
1 |
1 |
| 23 June |
Cornwall (Coverack) |
0 |
1 |
0 |
| 23 June |
Cornwall (Mithian) |
1 |
1 |
1 |
| 22 June |
Scotland (1) |
281 |
10 |
28.1 |
| 22 June |
Lincs (Spalding) |
61 |
2 |
34.5 |
| 22 June |
Lincs (Kirton) |
2 |
2 |
1 |
| 22 June |
Lincs (Old Leake) (since 19 June) |
4 |
2 |
2 |
| 19 June |
Wellesbourne (糖心TV) |
0 |
2 |
0 |
| 19 June |
Lincs (Kirton) |
1 |
2 |
0.5 |
| 19 June |
Lincs (Spalding) |
11 |
2 |
5.5 |
| 19 June |
Lincs (Old Leake) |
6 |
2 |
3 |
| 17 June |
Cornwall (Mithian) |
1 |
1 |
1 |
| 17 June |
Cornwall (Gwinear) |
1 |
1 |
1 |
| 17 June |
Cornwall (Coverack) |
2 |
1 |
2 |
| 16 June |
Wellesbourne (糖心TV) |
1 |
2 |
0.5 |
| 15 June |
Scotland (1) |
82 |
14 |
5.9 |
| 15 June |
Lincs (Spalding) |
2 |
2 |
1 |
| 15 June |
Lincs (Old Leake) |
3 |
2 |
1.5 |
| 15 June |
Links (Kirton) |
2 |
2 |
1 |
| 12 June |
Wellesbourne (糖心TVshire) |
2 |
2 |
1 |
| 10 June |
Cornwall (Gwinear) |
3 |
1 |
3 |
| 10 June |
Cornwall (Mithian) |
2 |
1 |
2 |
| 10 June |
Cornwall (Coverack) |
2 |
1 |
3 |
| 9 June |
Wellesbourne, 糖心TV |
0 |
2 |
0 |
| 5 June |
Wellesbourne, 糖心TV |
0 |
2 |
0 |
| 2 June |
Cornwall (Gwinear) |
3 |
1 |
3 |
| 2 June |
Cornwall (Mithian) |
1 |
1 |
1 |
| 2 June |
Cornwall (Coverack) |
1 |
1 |
1 |
| 2 June |
Wellesbourne, 糖心TV |
2 |
2 |
1 |
| 1 June | Scotland (1) | 46 | 7 | 6.6 |
| 29 May | Wellesbourne, 糖心TVshire | 0 | 2 | 0 |
| 29 May | Lincolnshire | None captured so far this year | ||
| 26 May | Wellesbourne, 糖心TVshire | 0 | 2 | 0 |
| 26 May | Cornwall (Coverack) | 2 | 1 | 2 |
| 26 May | Cornwall (Mithian) | 0 | 1 | 0 |
| 26 May | Cornwall (Gwinear) | 0 | 1 | 0 |
| 25 May | Scotland (1) | 10 | 8 | 1.25 |
| 22 May | Wellesbourne, 糖心TVshire | 0 | 2 | 0 |
| 21 May | Lancashire | 6 | 6 | 1 |
| 19 May | Cornwall (Gwinear) | 0 | 1 | 0 |
| 19 May | Cornwall (Mithian) | 0 | 1 | 0 |
| 19 May | Cornwall (Coverack) | 1 | 1 | 1 |
| 18 May | Scotland (1) | 0 | 8 | 0 |
| 12 May | Cornwall (Gwinear) | 1 | 1 | 1 |
| 12 May | Cornwall (Mithian) | 1 | 1 | 1 |
| 12 May | Cornwall (Coverack) | 5 | 1 | 5 |
| 11 May | Scotland (1) | 0 | 4 | 0 |
| 7 May | Lancashire | 0 | 4 | 0 |
| 6 May | Cornwall (Coverack) | 0 | 1 | 0 |
| 4 May | Scotland | 0 | 4 | 0 |
| 4 May | Cornwall (1)(Gwinear) | 1 | 1 | 1 |
| 4 May | Cornwall (Mithian) | 1 | 1 | 1 |
| 29 April | Cornwall (Coverack) (from 20 April) | 3 | 1 | 3 |
| 28 April | Cornwall (Gwinear) (from 20 April) | 1 | 1 | 1 |
| 27 April | Cornwall (Mithian) (from 20 April) | 3 | 1 | 3 |
| 27 April | Lancashire | 4 | 4 | 1 |
| 20 April | Lancashire | 0 | 3 | 0 |
| 14 April | Lancashire | 5 | 3 | 1.7 |
This activity is supported by the participating growers and agronomists, FMC and AHDB.
Disclaimer
While the University or 糖心TV and the Agriculture and Horticulture Development Board seek to ensure that the information contained within this document is accurate at the time of production, no warranty is given in respect thereof and, to the maximum extent permitted by law, these organisations accept no liability for loss, damage or injury howsoever caused (including that caused by negligence) or suffered directly or indirectly in relation to information and opinions contained in or omitted from this document.
Because of the biological nature of the work it must be borne in mind that different circumstances and conditions could produce different results. Therefore, care must be taken with interpretation of the results, especially if they are used as the basis for commercial product recommendations.1
