Insektbejdsning 2013

Forfatter:

Anne Lisbet Hansen & Åsa Olsson

ID:

460 461-2013

Konklusion:

I fire forsøg er bejdsemidlerne Gaucho, Cruiser og Mundus Forte undersøgt på deres effekt på skadedyr. Ved tidlig fremspiring viser Mundus Forte en hurtigere fremspiring sammenlignet med Gaucho. Ved fuld plantebestand viser alle bejdsemidler høje plantetal.

I to forsøg har der været angreb af trips, og i det ene forsøg med 35 pct. angrebne planter i ubehandlet, har alle bejdsemidler reduceret angrebet uden sikker forskel mellem midler. I et forsøg er der et sent og svagt angreb af bedebladlus, hvor alle bejdsemidler har reduceret angrebet. I juli er der angreb af gammaugle larver i alle fire forsøg, men angrebene var svage og sprøjtning med Karate i et led har ikke vist tydelig effekt. Der er i forsøgene opnået udbytter på op til 3 pct. uden sikker forskel mellem bejdsemidler.

Conclusion:

In four trials, the seed treatments Gaucho, Cruiser and Mundus Forte are studied their effect on pests. Early plant emergence shows that Mundus Forte has a faster emergence compared with Gaucho. At full plant emergence all seed treatments result in high plant populations.

In two trials, there have been attacks of trips, and in one trial with 35 per cent of attacked plants in untreated, all seed treatments have reduced the attack without significant difference between treatments. In a late and weak attack of black bean aphids, all seed treatments have reduced the attack. In July, there have been attacks of larva of Autographa gamma in all four trials, but the attacks were weak and application with Karate in one entry has shown no apparent effect. Obtained sugar yield increase in the four trials varies up to 3 per cent with no significant difference between seed treatments.

Publikationsdato:

05/04/2016