Contributions of EU-project REPCO to apple scab control

Summary in the original language of the document

The objective of REPCO is to contribute to the replacement of copper fungicides in organic agriculture by
new measures for control of downy mildew (Plasmopara viticola) in grapevine and scab (Venturia inaequalis)
in apple. Both major European organic crops strongly depend on copper fungicides. Permitted amounts will
be reduced stepwise during the following years (Council Regulation (EEC) 2092/91, Annex II) to avoid
environmental risks. In European countries where copper fungicides are already out of use, production of
organic apples suffers severe economical problems because of insufficient scab control.
Potentiators of resistance, organically based fungicides and biocontrol agents are screened and evaluated in
apple. Effects of crop management practices in organic agriculture on overwintering of Venturia inaequalis
are assessed. Novel disease control measures and knowledge are integrated into organic management
systems. 'Pipeline' products already under development elsewhere are included and where necessary
optimised in their use.