Comprehensive Control System for Ginger Bacterial Wilt Disease Based on Anaerobic Soil Disinfestation

Bacterial wilt is a soil-borne disease that causes severe damage in ginger-growing regions of Japan (eight prefectures the Shikoku, Kyushu, and Honshu regions). Because pathogen Ralstonia pseudosolanacearum usually lives deeper soil infects host plants via roots, it not easy to eliminate even with chemical pesticides (such as fumigants). In our previous study, we found anaerobic disinfestation diluted ethanol (Et-ASD) effectively eliminated this pathogen. We conducted field experiments confirm effectiveness Et-ASD ginger monoculture system. Eight trials were seven different fields from spring autumn. Excluding one trial early spring, summer successfully (below detection limit by developed sensitive bio-PCR method), no recurrence was observed after ASD treatment. addition, other useful methods for controlling explored, including proper management outbreak disinfection seed rhizomes. Based on these results, comprehensive control system bacterial developed.