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Pea Moth

peamoth

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

Monitoring and forecasting has ended for 2020 and will resume in May 2021. 

You can contact Becky Howard on 01780 781351 if you require additional advice about pest management. It's important to monitor pea moth presence on your farm using pheromone traps to help us provide accurate spray forecasts or other management advice for you.

A spray date is displayed below during the forecasting period, based on a model prediction, and should be checked 3 - 4 days after reaching a threshold in your traps.

Traps should be placed in pea crops in mid-May and monitored three times each week. In combining peas, when using two traps per crop, a threshold is reached when 10 or more moths are caught in either trap on two consecutive occasions. If you are using a single trap, the threshold is 20 moths on two consecutive occasions. In vining peas a lower threshold of damage is tolerated and traps should be used as an indication of moth presence.

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 forecasting system accurately predicts 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.

Predicted spray date for regions based on your threshold in pheromone traps

Threshold Date from your trap catches East S. East S. West E. Mids W. Mids Wales North Borders
                 
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