天王寺蕪の根こぶ病に対するおとり植物および各種資材の防除効果

抄録

We investigated the efficiencies of several treatments to control clubroot disease caused by Plasmodiophora brassicae on ‘Tennoji-kabura’ turnip (Brassica campestris L. ‘Tennoji-kabura’), a traditional vegetable in Osaka, Japan. Growing ‘Tanabe-daikon’ (Japanese radish) for 1.5 months as a decoy plant reduced the gall formation as is in the case of growing leafy daikon breeding line CR-1. Dolomite-converter slag raised the soil pH from 6.8 to 7.5, and remarkably suppressed the gall formation in ‘Tennoji-kabura’. A commercial seaweed fertilizer did not yield a significant effect.