Biological Soil Disinfestation (BSD) of Soilborne Pathogens and Its Possible Mechanisms

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X
42-01-02.pdf760.9 KB

Biological soil disinfestation (BSD) is one of the methods for soil disinfestation recently developed and consists of organic amendment, irrigation, and covering the soil surface with plastic film. BSD trials with artificially infested soils effectively killed Fusarium oxysporum f. sp. lycopersici and Ralstonia solanacearum. F. oxysporum f. sp. lycopersici was not detected 9 days after treatment. Application of BSD to R. solanacearum-infested soil decreased disease severity 4 weeks after transplantation. Reduction in soil pH and Eh was observed in the BSD-treated soil. HPLC analysis revealed the accumulation of acetic acid and butyric acid in the soil and the disinfestation effect of BSD was almost reproduced by mixing these organic acids with the infested soil. Volatile compound(s) evolved in the BSD-treated soil was also suggested to contribute to disinfestation. PCR-DGGE (PCR-denaturing gradient gel electrophoresis) analysis revealed the increase in the abundance of several bacteria in the BSD-treated soil, and two of them had 100% similarity with potential organic acid producers, Clostridium sp. and Enterobacter sp.

作成者 MOMMA Noriaki

anaerobic bacteria

bacterial wilt

Fusarium wilt

organic acids

soil reduction

公開者 Japan International Research Center for Agricultural Sciences
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
開始ページ 7
終了ページ 12
DOI 10.6090/jarq.42.7
権利 Japan International Research Center for Agricultural Sciences
言語 eng