Factsheet DSS codling moth flight model

Codling moth causing damage in various fruits. The larvae emerged from eggs laid by the codling moth (Cydia Pomonello) on the surface of the fruit cause damage to apples, pears and other pome fruit. The larvae burrow inside and blemish the surface of the fruit which makes it unsellable. The DSS Codling moth flight model on platform.ipmdecisions.net, predicts the start of adult codling moth flight, enabling users to undertake targeted monitoring and/or mitigating actions to reduce the risk of damage to the crop. A 3-parameter non-linear regression model fits cumulative moth captures as a function of accumulated day degrees for all three of the male flights. The model predicts that 1st migration begins after 151 day degrees, 2nd migration begins after 673 day degrees and 3rd migration begins after 1303 day degrees. The start of migration events are reported in the DSS warning to the user. The model uses minimum and maximum temperature from the 1st of January. The DSS output gives information about the risk of codling moth migration. The ‘Cumulative Captures’ chart indicates the predicted accumulative proportion (%) of adult males likely to be caught by these dates. This DSS was adapted from work carried out in Greece, and is considered applicable, but not yet validated in, Albania, Romania, Bosnia, Croatia, Italy, Macedonia, Montenegro, Portugal, San Marino, Slovenia, Slovakia, and Spain.