Develpoment of codling moth (Cydia pomonella) in Kyustendil region - methods for forecasting

Vilina Petrova

Abstract: The investigation was carried out during the period 2014-2017 in an experimental apple orchard at the Institute of agriculture - Kyustendil, planted in the spring of 1998. The trees were from cultivars Florina and Freedom grafted on seedling rootstock Winter Gold Pearmain and on clonal rootstocks MM 106, М 9 and MX. The dynamics of the flight of C. pomonella have been studied. It was found that for Kyustendil region, the beginning of flight of codling moth of the overwintering generation starts from the second ten days of April to the beginning of May, with the maximum difference of 25 days in different years of study.It was determined the effective temperature (Σt°С), at which the different stages of the development of codling moth proceed. For the development of one generation of codling moth, a temperature sum from 547.4°C to 724.5°C is required.

Keywords: (Cydia pomonella); apple; codling moth; dynamics flight; sum of the effective temperatures (Σt C)

Date published: 2020-03-10