Regulation of Cydia pomonella in the Northern German climate

Summary in the original language of the document

Population control of the codling moth (Cydia pomonella) is of great importance in
ecological fruit-growing. In the work described here we attempted (1) to determine the
efficacy of plant protection preparations certified for organic fruit production, and (2) to
develop a suitable application strategy. We found that a Granulovirus (Madex3), Bacillus
thuringiensis (Xentari) and Neem Azal were able to provide effective control of C.
pomonella. The reduced efficacy of Madex 3 as reported e.g. from some Southern
German orchards could not be observed in our trials.