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

Commercial biocontrol of microbial plant diseases and plant pests, such as nematodes, requires field-effective formulations. The isolate O6 is a Gram-negative bacterium that controls microbial plant pathogens both directly and indirectly. This bacterium also has nematocidal activity. In this study,...

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Bibliographic Details
Published in:The plant pathology journal 2018, 34(3), , pp.241-249
Main Authors: Nam, Hyo Song, Anderson, Anne J, Kim, Young Cheol
Format: Article
Language:English
Subjects:
biological control
hydrogen cyanide
nematicide
root-knot nematode
농학
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Summary:Commercial biocontrol of microbial plant diseases and plant pests, such as nematodes, requires field-effective formulations. The isolate 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 O6. Culturable bacteria in the formulated product were retained at above 1 × 10 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 ( 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 O6 can be used for control of plant microbial pathogens and root-knot nematodes.
ISSN:1598-2254
2093-9280
DOI:10.5423/PPJ.NT.12.2017.0264