Vol. 2 (6) : November-December 2011 issue
Green Farming Vol. 2 (6) : 698-701 (November-December, 2011) (New Series)
Fungal and bacterial antagonists for the management of damping-off disease of bidi tobacco caused by Pythium aphanidermatum
D.L. YADAV1* and K.R. JOSHI2
Bidi Tobacco Research Station, Anand Agricultural University, Anand - 388 110 (Gujarat)
Designation : 1Ph.D. Scholar & Res. Fellow *(dlaau21@gmail.com), 2Res. Scientist
Subject : Plant Pathology, Nematology and Virology, Mushroom Cultivation
Paper No. :
Total Pages : 4
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Revised accepted :
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Citation :
D.L. YADAV and K.R. JOSHI. 2011. Fungal and bacterial antagonists for the management of damping-off disease of bidi tobacco caused by Pythium aphanidermatum. Green Farming Vol. 2 (6) : 698-701 (November-December, 2011) (New Series)
ABSTRACT
Three species of Trichoderma, Verticillium lecanii, and two bacterial bio-agents viz., Pseudomonas fluorescens and Bacillus subtilis were evaluated for their antagonistic activity against Pythium aphanidermatum causal agent of damping-off in bidi tobacco by two different methods in in vitro. The result revealed that all the bio-agents have significantly reduced the mycelial growth of the pathogen except Verticillium lecanii. Bacterial bio-agents viz., Pseudomonas fluorescens and Bacillus subtilis were more effective in inhibiting the growth of P. aphanidermatum then Trichoderma spp. Fungal antagonists T. harzianum exhibited 67.98 % per cent inhibition of mycelial growth, while T. virens (14.73%) and T. viride (11.70%) showed poor antagonism by dual culture technique.
Key words :
Bacillus subtilis, damping off, Nicotiana tabacum, Pseudomonas fluorescens, Pythium aphanidermatum, Nicotiana tabacum, tobacco, T. harzianum, Trichoderma spp., Verticillium lecanii.
