Use of Coniothyrium minitans and other microorganisms for reducing Sclerotinia sclerotiorum

► The efficacy of three biological control agents has been examined on sclerotial survival of Sclerotinia sclerotiorum. ► All test agents are effective to colonize and degrade S. sclerotiorum sclerotia, with Coniothyrium minitans being the most effective. ► Increasing the application rate of the agents increases the level of sclerotial degradation. ► C. minitans isolate W09 had a faster growth rate than the commercial isolate CON/M/91-08.