Forebyggelse af resistens mod fungicider i bladsvampe / Prevention of resistance to fungicide restance in leaf diseases

Conclusion

In the GUDP project IPMIROER prevention of fungicide resistance in leaf diseases is investigated with two trials 2016-2017. Two varieties with different disease susceptibility have been used. The treatments include a variety of treatment strategies with a variety of active substances and mechanism of action as well as treatment times. It has been investigated whether the strategies can give the same or better effect on leaf diseases and yield potential in comparison to normal practice.

The results have indicated that different treatment strategies for prevention of fungicide resistance have reduced the leaf disease attacks and have resulted in yield increase compared to untreated. There have been no clear differences between the different strategies, but the results indicate that the need for leaf disease control depends on which leaf disease dominates and the particular disease pressure in that year.