Bladsvampevarsling

Conclusion

Rust has been the dominant leaf disease in 2021 and severe infestations of powdery mildew have come later than usual. Attacks by Ramularia have been weak. The attacks of Cercospora leaf spot have been slightly stronger in the last three years than in previous years

In the leaf disease warning service, 13 fields have weekly been monitored for infestations in a number of varieties. First treatment was recommended in week 30 (July 25.-31.) and second treatment was recommended in week 33 (August 15.-21.).