This year several UK brassica growers are monitoring diamond-back moths in their crops using pheromone traps. Some are also monitoring silver Y moths. The results will be summarised on this web page.

If anyone else would like to contribute monitoring data to this site please contact rosemary.collier@warwick.ac.uk.

See also the Syngenta Brassica Alert 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 since late June.

Date	Location	Number of moths	Number of traps	Number of moths per trap
7 October	Wellesbourne	0	2	0
4 October	Lincolnshire	0	4	0
4 October	Wellesbourne	1	2	0.5
1 October	Wellesbourne	1	2	0.5
27 September	Lincolnshire	0	4	0
27 September	Wellesbourne	0	2	0
24 September	Wellesbourne	0	2	0
20 September	Wellesbourne	0	2	0
20 September	Lincolnshire	0	4	0
17 September	Wellesbourne	0	2	0
16 September	Scotland (Fife and Angus)	1	2	0.5
13 September	Lincolnshire	2	2	1
13 September	Wellesbourne	0	4	0
10 September	Wellesbourne	1	2	0.5
9 September	Scotland (Fife and Angus)	3	2	1.5
6 September	Wellesbourne	0	2	0
6 September	Lincolnshire	0	4	0
3 September	Wellesbourne	0	2	0
2 September	Scotland (Fife and Angus)	2	2	1
30 August	Lincolnshire	0	4	0
30 August	Wellesbourne	0	2	0
27 August	Wellesbourne	0	2	0
23 August	Lincolnshire	10	4	2.5
26 August	Scotland (Fife and Angus)	3	2	1.5
23 August	Wellesbourne	0	2	0
20 August	Wellesbourne	0	2	0
19 August	Scotland (Fife and Angus)	6	2	3
16 August	Lincolnshire	18	4	4.5
16 August	Wellesbourne	1	2	0.5
13 August	Wellesbourne	7	2	3.5
12 August	Scotland (Fife and Angus)	14	2	7
9 August	Lincolnshire	13	4	3.25
9 August	Wellesbourne	3	2	1.5
6 August	Wellesbourne	2	2	1
5 August	Scotland (Fife and Angus)	5	2	2.5
2 August	Lincolnshire	22	4	5.5
2 August	Wellesbourne	0	2	0
30 July	Wellesbourne	0	2	0
29 July	Scotland (Fife and Angus)	10	2	5
26 July	Lincolnshire	44	4	11
26 July	Wellesbourne	0	2	0
23 July	Wellesbourne	1	2	0.5
22 July	Scotland (Fife and Angus)	24	3	8
19 July	Lincolnshire	Spalding 21 Old Leake 25	4 (2 per site)	11.5
19 July	Wellesbourne	0	2	0
16 July	Wellesbourne	0	2	0
15 July	Scotland (Fife and Angus)	93	4	23.3
12 July	Lincolnshire	Spalding 16 Old Leake 37	4 (2 per site)	14.25
12 July	Wellesbourne	0	2	0
9 July	Wellesbourne	0	2	0
8 July	Scotland (Fife and Angus)	27	3	9
5 July	Wellesbourne	0	2	0
2 July	Wellesbourne	0	2	0
1 July	Scotland (Fife and Angus)	13	3	4.3
28 June	Wellesbourne	0	2	0
25 June	Wellesbourne	0	2	0
24 June	Scotland (Fife and Angus)	2	2	1