Bacillus subtilis S1-0210 as a Biocontrol Agent against Botrytis cinerea in Strawberries

Hang, Nguyen Thi Thu; Oh, Soon Ok; Kim, Gyoung Hee; Hur, Jae Seoun; Koh, Young Jin

doi:2005.21.1.59

Plant Pathol J > Volume 21(1); 2005 > Article

The Plant Pathology Journal 2005;21(1):59-63.
DOI: https://doi.org/10.5423/PPJ.2005.21.1.059 Published online March 31, 2005.

Bacillus subtilis S1-0210 as a Biocontrol Agent against Botrytis cinerea in Strawberries

Nguyen Thi Thu Hang, Soon Ok Oh, Gyoung Hee Kim, Jae Seoun Hur, Young Jin Koh

Abstract

Bacillus subtilis S1-0210 was selected as a biological agent against Botrytis cinerea in strawberry. The isolate inhibited mycelial growth of B. cinerea in vitro tests. A wettable powder formulation of B. subtilis S1-0210 significantly reduced infection rates with lower than 5%, compared with higher than 70% of infection rates in untreated control. The formulation showed 85 to 89% control efficacies of gray mold incidences on fruits of strawberry in pots. Pre-treatment of the agent was more effective in controlling gray mold on fruits and leaves than post-treatment at the early stage of disease development. The formulation also showed 70% control efficacy of gray mold incidence on fruits of strawberry in a field trial. The results indicate that B. subtilis S1- 0210 in the wettable powder formulation may be a potential biocontrol agent to control gray mold on strawberry.

Key Words: Bacillus subtilis, biocontrol, Botrytis cinerea, gray mold, strawberry