Bladsvampe og optagningstid
Konklusion
I et enkelt forsøg med rust som den fremtrædende bladsvamp, er bladsvampestrategier med en, to eller tre behandlinger med enten soloprodukter eller tankblanding undersøgt ved to optagningstider. Ved begge optagningstider, 26. oktober og 22. november, ses højeste merudbytte og nettoindtægt med to svampebehandlinger, og resultaterne indikerer at tankblanding (0,3 liter Comet pro + 0,55 liter Propulse) giver lidt højere merudbytte og nettoindtægt end behandling med soloprodukterne 0,55 liter Propulse efterfulgt af 0,3 liter Comet Pro pr. ha. Flere forsøg med forskellige optagningstider samt svampestrategier med reducerede doseringer bør udføres for at kunne drage en mere sikker konklusion.
Conclusion
In a single field trial with sugar beets, rust has been the predominant leaf disease, control strategies with one, two or three applications using either solo products or tank mixture have been studied at two lifting times. At both lifting times, 26 October and 22 November, the highest yield increase and net income are seen with two treatments, and the results indicate that tank mixture (0,3 liter Comet pro + 0,55 liter Propulse) gives slightly higher additional yield and net income than treatment with the solo products 0,55 liter Propulse followed by 0,3 liter Comet Pro per ha. More trials with different times of harvest as well as control strategies with reduced dosages should be carried out to be able to draw more confident conclusions.