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Biocontrol Efficacy of Formulated Pseudomonas chlororaphis O6 against Plant Diseases and Root-Knot Nematodes.


ABSTRACT: Commercial biocontrol of microbial plant diseases and plant pests, such as nematodes, requires field-effective formulations. The isolate Pseudomonas chlororaphis O6 is a Gram-negative bacterium that controls microbial plant pathogens both directly and indirectly. This bacterium also has nematocidal activity. In this study, we report on the efficacy of a wettable powder-type formulation of P. chlororaphis O6. Culturable bacteria in the formulated product were retained at above 1 × 108 colony forming units/g after storage of the powder at 25 °C for six months. Foliar application of the diluted formulated product controlled leaf blight and gray mold in tomato. The product also displayed preventative and curative controls for root-knot nematode (Meloidogyne spp.) in tomato. Under laboratory conditions and for commercially grown melon, the control was at levels comparable to that of a standard commercial chemical nematicide. The results indicated that the wettable powder formulation product of P. chlororaphis O6 can be used for control of plant microbial pathogens and root-knot nematodes.

SUBMITTER: Nam HS 

PROVIDER: S-EPMC5985650 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature

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Biocontrol Efficacy of Formulated <i>Pseudomonas chlororaphis</i> O6 against Plant Diseases and Root-Knot Nematodes.

Nam Hyo Song HS   Anderson Anne J AJ   Kim Young Cheol YC  

The plant pathology journal 20180601 3


Commercial biocontrol of microbial plant diseases and plant pests, such as nematodes, requires field-effective formulations. The isolate <i>Pseudomonas chlororaphis</i> O6 is a Gram-negative bacterium that controls microbial plant pathogens both directly and indirectly. This bacterium also has nematocidal activity. In this study, we report on the efficacy of a wettable powder-type formulation of <i>P. chlororaphis</i> O6. Culturable bacteria in the formulated product were retained at above 1 × 1  ...[more]

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