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Carrot fly forecast 2024

The forecast outputs below are based on weather data provided by Agrii. The forecasts predict the timing of fly activity. They do not predict the number of insects present in the crop, as this depends on the size of the local fly population. For control purposes, we consider that the pest has become active when 10% of the insects have emerged/laid eggs and that the peak of activity has occurred when 50% have emerged/laid eggs. The predictions will change over time depending on weather conditions.

Updated 26 September 2024

Location

First generation

10% eggs

First generation

50% eggs

Second generation

10% eggs

Second generation

50% eggs

Third generation

10% emergence

Cornwall - Hayle

2 May 12 May 25 Jul 5 Aug 7 Oct

Kent - Sandwich

30 Apr 12 May 13 Jul 26 Jul 8 Sep

Suffolk - Ipswich

29 Apr 11 May 18 Jul 28 Jul 13 Sep

Warwick, Wellesbourne

6 May 15 May 18 Jul 30 Jul 16 Sep

Norfolk, Norwich

6 May 17 May 24 Jul 3 Aug 20 Sep

Lincolnshire - Holbeach

4 May 12 May 22 Jul 1 Aug 19 Sep

Nottingham - Stubton

3 May 12 May 19 Jul 29 Jul 18 Sep

Lancashire, Southport

4 May 14 May 1 Aug 10 Aug 24 Sep

Yorkshire, York

4 May 11 May 22 Jul 31 Jul 19 Sep

Perthshire, Scotland

10 May 22 May 2 Aug 15 Aug -