National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The efficacy of twelve microbial biocontrol agents viz., Trichoderma viride T. viride strain 16 T. viride strain 60 T. harzianum T. harzianum strain 2 T. harzianum strain 55 Pseudomonas fluorescens and Bacillus subtilis were evaluated by dual culture technique against Alternaria helianthi. In vitro efficacy of six fungicides viz., Mancozeb, Iprodione, Propiconozole, Chlorothalonil, Hexaconozole and Difenconozole were evaluated by food poison technique. Among the biocontrol agents, maximum inhibition of radial growth of A. helianthi was observed in observed in T. viride (85.33%) which was followed by T. viride strain 16 (79.33%), and T. harzianum (76.44%). Among the fungicides, Propiconozole recorded maximum inhibition of mycelial growth of A. helianthi (90.47%) followed by Mancozeb (90.42%) and Iprodione+Caebendazim (89.75%). In in vivo evaluation spraying of T. viride @ 1:0 dilution was effective and Propiconozole @ 0.1% was found effective.
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