Pea Moth

peamothClick here to log in & read the pea moth Technical update Ref: TU03

A spray date can be obtained from PGRO based on a computer prediction, 3 - 4 days after reaching a threshold in traps.


A threshold in traps was reported on 24th May 2017 in Essex and at other sites since that date. See the table below for predicted spray dates.


Traps should be placed in pea crops in mid-May and monitored three times each week. When 10 or more moths are caught in either trap on two consecutive occasions monitoring of temperature should commence to predict your spray date. Threshold dates may vary for different regions and it is important to monitor populations in your region to accurately predict spray date. Timing of sprays is related to egg development and this is affected by temperature. Control of the larvae must be carried out following egg-hatch and before they reach the pod, and the monitoring system will accurately predict this.
On the predicted spray date, crops which are at the first pod set stage or which
have flowered should be sprayed, but later crops should only be sprayed when
they reach first pod set. Crops with green pods are susceptible to damage. A
second application should be applied 10-14 days later.
 
  Spray Date For Regions
Threshold Date from your trap catches East S. East S. West E. Midlands W. Midlands Wales North Borders
5 June  16 Jun 17 Jun  18 Jun  17 Jun  18 Jun   18 Jun 18 Jun  19 Jun 
7 June 17 Jun 18 Jun 19 Jun 18 Jun 19 Jun 20 Jun 19 Jun 20 Jun
9 June 20 Jun 20 Jun 21 Jun 20 Jun 20 Jun 21 Jun 21 Jun 22 Jun
11 June 21 Jun 22 Jun 23 Jun 22 Jun 22 Jun 23 Jun 23 Jun 23 Jun
13 June 23 Jun 23 Jun 25 Jun 23 Jun 24 Jun 25 Jun 24 Jun 25 Jun
15 June 26 Jun 26 Jun 27 Jun 26 Jun 27 Jun 27 Jun 26 Jun 27 Jun
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