Bladsvampevarsling
Konklusion
Bederust har været den dominerende svampesygdom i 2021 og kraftige angreb af meldug er kommet senere end normalt. Angreb af Ramularia har været svage. Angrebene af Cercospora bladplet har de sidste tre år været lidt kraftigere end i tidligere år.
Der blev i varslingstjenesten varslet for første svampebehandling i uge 30 (25.-31. juli) og for anden behandling i uge 33 (15.-21. august).
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.).