Update on Codling Moth Treatment Timings

Friday, June 14, 2024

 

Apple and Pear: Codling Moth Update


The models were run again on Friday, June 14 with a degree day threshold of 10 degrees (C) using Kentville weather station data. The predicted timings have not changed.

Degree Day and Treatment Timing Predictions
The biofix dates for this season are June 1 for early and June 5-6 for late regions determined by Erika Bent, APM. Jeff Franklin, AAFC, ran the degree day model to predict when degree day thresholds will be met for treatments.

Codling Moth Treatment with Rimon
Timing: The treatment timing for Rimon is 80 degree days Celsius from biofix.
Prediction: According to the current forecast, the 80 degree day threshold is expected to occur by June 14 for early regions and June 16 for late regions.


Codling Moth Treatment with Egg Hatch Products
Products:
 Assail, Calypso, Delegate, Intrepid, Altacor, and Exirel
Timing: The treatment timing for egg hatch products is 100 degree days Celsius from biofix.
Prediction: According to the current forecast, the 100 degree day threshold is expected to occur by June 16 for early regions and June 18 for late regions.

Codling Moth Treatment with Organophosphate
Product:
 Imidan
Caution: All hand thinning activities must be completed prior to application. No hand thinning can occur on trees treated with Imidan.
Timing: Control of codling moth with Imidan is typically slightly later at 140 degree days after biofix.
Prediction: According to the current forecast, the 140 degree day threshold is expected to occur by June 20 for early regions and June 22 for late regions.

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