Monitoring diamond-back moth in commercial crops 2021

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
12 Oct	Wellesbourne, 糖心TV	0	2	0
8 Oct	Wellesbourne, 糖心TV	0	2	0
5 Oct	Wellesbourne, 糖心TV	0	2	0
1 Oct	Wellesbourne, 糖心TV	0	2	0
28 Sep	Wellesbourne, 糖心TV	0	2	0
24 Sep	Wellesbourne, 糖心TV	0	2	0
21 Sep	Lincolnshire (Kirton, Old Leake, Gosberton)	0	3	0
21 Sep	Wellesbourne, 糖心TV	0	2	0
17 Sep	Wellesbourne, 糖心TV	0	2	0
15 Sep	Cornwall (Gwinear, Mithian, Cury Cross, Veryan)	2	4	0.5
14 Sep	Lincolnshire (Kirton, Old Leake, Gosberton)	0	3	0
14 Sep	Wellesbourne, 糖心TV	0	2	0
10 Sep	Wellesbourne, 糖心TV	1	2	0.5
8 Sep	Cornwall (Gwinear, Mithian, Cury Cross, Veryan)	0	4	0
7 Sep	Lincolnshire (Kirton, Old Leake, Gosberton)	0	3	0
7 Sep	Wellesbourne, 糖心TV	0	2	0
3 Sep	Wellesbourne, 糖心TV	0	2	0
1 Sep	Cornwall (Gwinear, Mithian, Cury Cross, Veryan)	1	4	0.25
31 August	Wellesbourne, 糖心TV	0	2	0
27 August	Lincolnshire (Kirton, Old Leake, Gosberton)	0	3	0
27 August	Wellesbourne, 糖心TV	0	2	0
24 August	Wellesbourne, 糖心TV	0	2	0
20 August	Lincolnshire (Kirton, Old Leake, Gosberton)	0	3	0
20 August	Wellesbourne, 糖心TV	0	2	0
18 August	Cornwall (Gwinear, Mithian, Cury Cross, Veryan)	17	4	4.25
17 August	Wellesbourne, 糖心TV	0	2	0
13 August	Lincolnshire (Kirton, Old Leake, Gosberton)	0	3	0
13 August	Wellesbourne, 糖心TV	0	2	0
11 August	Cornwall (Gwinear, Mithian, Cury Cross, Veryan)	6	4	1.5
10 August	Wellesbourne, 糖心TV	0	2	0
6 August	Lincolnshire (Kirton, Old Leake, Gosberton)	5	3	1.7
6 August	Wellesbourne, 糖心TV	0	2	0
3 August	Wellesbourne, 糖心TV	0	2	0
29 July	Lancashire	23	6	3.8
28 July	Cornwall (Gwinear, Mithian, Cury Cross, Veryan)	27	4	6.75
27 July	Wellesbourne, 糖心TV	0	2	0
26 July	Scotland	81	10	8.1
23 July	Wellesbourne, 糖心TV	0	2	0
22 July	Lancashire	19	6	3.1
22 July	Lincolnshire (Kirton, Old Leake, Gosberton)	1	3	0.3
22 July	Cornwall (Gwinear, Mithian, Cury Cross, Veryan)	28 (21 at one site)	4	7
20 July	Wellesbourne, 糖心TV	0	2	0
19 July	Scotland	41	10	4.1
16 July	Cornwall (Gwinear, Mithian, Cury Cross, Veryan)	26 (23 at one site)	4	6.5
16 July	Wellesbourne, 糖心TV	0	2	0
15 July	Lancashire	28	6	4.6
15 July	Lincolnshire (Kirton, Old Leake, Gosberton)	0	3	0
13 July	Wellesbourne, 糖心TV	0	2	0
12 July	Scotland	35	10	3.5
12 July	Lancashire	26	6	4.3
9 July	Cornwall (Gwinear, Mithian, Cury Cross, Veryan)	2	4	0.5
9 July	Wellesbourne, 糖心TV	1	2	0.5
8 July	Lincolnshire (Kirton, Old Leake, Gosberton)	3	3	1
6 July	Wellesbourne, 糖心TV	4	2	2
5 July	Scotland	26	10	2.6
5 July	Lancashire	22	6	3.6
2 July	Cornwall (Gwinear, Mithian, Cury Cross, Veryan)	5	4	1.25
2 July	Wellesbourne, 糖心TV	0	2	0
1 July	Lincolnshire (Kirton, Old Leake, Gosberton)	3	3	1
29 June	Wellesbourne, 糖心TV	1	2	0.5
28 June	Scotland	13	10	1.3
25 June	Lancashire	18	6	3
25 June	Wellesbourne, 糖心TV	0	2	0
24 June	Lincolnshire (Kirton, Old Leake, Gosberton)	16	3	5.3
24 June	Cornwall (Gwinear, Mithian, Cury Cross, Veryan)	0	4	0
22 June	Wellesbourne, 糖心TV	2	2	1
21 June	Scotland	26	10	2.6
18 June	Lancashire	28	6	4.6
18 June	Wellesbourne, 糖心TV	3	2	1.5
17 June	Lincolnshire (Kirton, Old Leake, Gosberton)	5	3	1.7
15 June	Cornwall (Gwinear, Mithian, Cury Cross, Veryan)	7	4	1.7
14 June	Scotland	9	10	0.9
11 June	Wellesbourne, 糖心TV	4	2	2
11 June	Lancashire	28	6	4.7
10 June	Lincolnshire (Kirton, Old Leake, Gosberton)	0	3	0
10 June	Cornwall (Gwinear, Mithian, Cury Cross, Veryan)	0	4	0
8 June	Lancashire	2	6	0.3
8 June	Wellesbourne, 糖心TV	5	2	2.5
7 June	Scotland	5	8	6.25
4 June	Wellesbourne, 糖心TV	3	2	1.5
3 June	Cornwall (Gwinear, Mithian, Cury Cross, Veryan)	3	3	1
3 June	Lincolnshire (Kirton, Old Leake, Gosberton)	4	3	1.3
1 June	Lancashire	0	6	0
1 June	Wellesbourne, 糖心TV	0	2	0
31 May	Scotland	0	8	0
28 May	Wellesbourne, 糖心TV	0	2	0
27 May	Cornwall (Gwinear, Mithian, Cury Cross, Veryan)	0	4	0
25 May	Lancashire	8	3	2.7
25 May	Wellesbourne, 糖心TV	0	2	0
24 May	Scotland	0	8	0
21 May	Wellesbourne, 糖心TV	0	2	0
20 May	Cornwall (Gwinear, Mithian, Cury Cross, Veryan)	0	4	0
18 May	Wellesbourne, 糖心TV	1	2	0.5
14 May	Wellesbourne, 糖心TV	0	2	0
13 May	Lincolnshire (Kirton, Old Leake, Gosberton)	8	3	2.7
13 May	Cornwall (Gwinear, Mithian, Cury Cross, Veryan)	1	4	0.25
11 May	Wellesbourne, 糖心TV	0	2	0
7 May	Wellesbourne, 糖心TV	0	2	0
6 May	Lincolnshire (Kirton, Old Leake, Gosberton)	0	3	0
6 May	Cornwall (Gwinear, Mithian, Veryan)	2	3	0.67
4 May	Wellesbourne, 糖心TV	0	2	0
30 Apr	Lincolnshire (Kirton, Old Leake, Gosberton)	0	3	0
30 Apr	Wellesbourne, 糖心TV	1	2	0.5
29 Apr	Cornwall (Gwinear, Mithian, Cury Cross)	3	3	1
27 Apr	Wellesbourne, 糖心TV	0	2	0
23 Apr	Lincolnshire (Kirton, Old Leake, Gosberton)	0	3	0
23 Apr	Wellesbourne, 糖心TV (set up 20 Apr)	1	2	0.5
22 Apr	Cornwall (Gwinear, Mithian, Cury Cross)	4	3	1.2
16 Apr	Lincolnshire (Kirton, Old Leake, Gosberton)	0	3	0
14 Apr	Gwinear, Cornwall	1	1	1

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.