Codling moth degree day update


Based on the May 1 biofix for codling moth (CM) at Winchester this year and data from the NEWA weather station at the Winchester research station, degree day accumulations for CM as of May 28 are 458 DD, and NEWA predicts 550 DD on Saturday, June 1. If weekly captures in pheromone traps are exceeding 5 CM/trap, use of Assail, Belay, Esteem or Intrepid against the 2nd half of first brood CM is optimal at about 450 DD. Timing of Altacor, CM virus, Delegate, Exirel, Imidan, or Voliam Flexi sprays is optimal at 550 DD.

Until next time, best wishes.

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