The codling moth biofix dates for this season are June 13 for most regions and June 15 for late regions determined by Erika Bent, APM.
Suzanne Blatt, AAFC, has run the degree day model today to predict when degree day thresholds will be met for treatments. The models were run on Thursday, June 18 with a degree day threshold of 10 degrees (C) using Kentville weather station data.Codling Moth Treatment with Rimon
Timing: The treatment timing for Rimon is 80 degree days Celsius from biofix to target eggs before they hatch.
Prediction: According to the current forecast, the 80 degree day threshold is expected to occur by June 23 for early regions. Late regions are not yet included in the forecast.Timing: The treatment timing for Rimon is 80 degree days Celsius from biofix to target eggs before they hatch.
Codling Moth Treatment with Egg Hatch Products
Products: Assail, Delegate, Intrepid, Altacor, and Exirel
Timing: The treatment timing for egg hatch products is 100 degree days Celsius from biofix.
Products: Assail, Delegate, Intrepid, Altacor, and Exirel
Timing: The treatment timing for egg hatch products is 100 degree days Celsius from biofix.
Prediction: Not yet forecast.
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.
Timing: Control of codling moth with Imidan is typically slightly later at 140 degree days after biofix.
Prediction: Not yet forecast.
Recommendations:
- Monitor the forecast for rain and do not apply treatment before heavy rain. Codling moth lay eggs that hatch over a period of time. Late application may miss the first egg hatch and could result in a few codling moth entries but will still provide residual activity for future egg hatches.
- If trap captures are below the treatment threshold but continue to build over time then treatment should be applied once a threshold is reached.
