Bladsvampe midler og doseringer

Conclusion

Rust has been the dominant leaf disease in three field trials performed in 2020, where powdery mildew has developed 1-2 weeks later than usual. One trial has been inoculated with Ramularia. Two treatments with 0.5 liter Opera per ha have resulted in 15 pct. yield increase in relation to untreated, and net approx. DKK 2,000 per ha. Opera may no longer be sold and may only be used and stored until October 30, 2021. Amistar Gold as well as the new and unapproved products Propulse and Balaya have resulted in sugar yield and net excess no higher than Opera.