Field assessment of the influence of a seed treatment with the antagonistic bacterium Serratia plymuthica on the control of major rapeseed pathogens in Brassica napus

The efficiency of a seed treatment of oilseed rape (Brassica napus) with the antagonistic rhizobacterium Serratia plymuthica (strain HRO-C48) against blackleg disease caused by Phoma lingam, Verticillium longisporum and Plasmodiophora brassicae was tested separately and in combination with azole fungicides in perennial field trials at nine sites in northern Germany. Furthermore, the performance of HRO-C48 against V. longisporum, P. brassicae and S. sclerotiorum was examined in glass house trials. Seeds were enriched with bacteria via bio-priming (log10 6 CFU /seed).

In mehrjährigen Freilandversuchen an insgesamt neun Standorten in Norddeutschland wurde die Wirkung einer Saatgutbehandlung mit dem antagonistischen Rhizobakterium Serratia plymuthica (Stamm HRO-C48) alleine und in Kombination mit Azol-Fungiziden gegenüber den Rapspathogenen Wurzelhals- und Stängelfäule (Phoma lingam), der Rapswelke (Verticillium longisporum) und der Kohlhernie (Plasmodiophora brassicae) untersucht. Des Weiteren wurde HRO-C48 gegen V. longisporum, P. brassicae und S. sclerotiorum in Gewächshausversuchen getestet. Die Rapssamen wurden mittels Biopriming mit Bakteriendichten von log10 6 CFU /Samen angereichert.


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