Greenhouse evaluation of Bacillus subtilis AP-01 and Trichoderma harzianum AP-001 in controlling tobacco diseases

Brazilian Journal of Microbiology

Monchan Maketon²  Jirasak Apisitsantikul¹  Chatchai Siriraweekul¹ 

[1] ,Kasetsart University Faculty of Science Zoology DepartmentBangkok,Thailand

关键词: Biological control;    tobacco diseases;    bacterial wilt;    damping off;    frogeye leaf spot;    controle biológico;    doenças do tabaco;    murcha bacteriana;    tombamento de mudas;    mancha olho-de-rã;   

DOI  :  10.1590/S1517-83822008000200018

来源: SciELO

【 摘 要 】

Two biological control agents, Bacillus subtilis AP-01 (LarminarTM) and Trichoderma harzianum AP-001 (TrisanTM) alone or/in combination were investigated in controlling three tobacco diseases, including bacterial wilt (Ralstonia solanacearum), damping-off (Pythium aphanidermatum), and frogeye leaf spot (Cercospora nicotiana). Tests were performed in greenhouse by soil sterilization prior to inoculation of the pathogens. Bacterial-wilt and damping off pathogens were drenched first and followed with the biological control agents and for comparison purposes, two chemical fungicides. But for frogeye leaf spot, which is an airborne fungus, a spraying procedure for every treatment including a chemical fungicide was applied instead of drenching. Results showed that neither B. subtilis AP-01 nor T. harzianum AP-001 alone could control the bacterial wilt, but when combined, their controlling capabilities were as effective as a chemical treatment. These results were also similar for damping-off disease when used in combination. In addition, the combined B. subtilis AP-01 and T. harzianum AP-001 resulted in a good frogeye leaf spot control, which was not significantly different from the chemical treatment.

【 授权许可】

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