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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39 For more details click here
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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Original Research Articles

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

Int.J.Curr.Microbiol.App.Sci.2018.7(1): 2726-2730
DOI: https://doi.org/10.20546/ijcmas.2018.701.326


Evaluation of Microbial Biocontrol Agents and Fungicides against Alternaria helianthi Causing Leaf Blight of Sunflower
Vijayalakshmi*, K. Karuna and G. Mahadevaswamy
Department of Plant Pathology, University of Agricultural Sciences,Bengaluru – 560065, India
*Corresponding author
Abstract:

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.


Keywords: Sunflower, Leaf blight, Alternaria helianthi, Biocontrol, Fungicides
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How to cite this article:

Vijayalakshmi, G., K. Karuna and Mahadevaswamy, G. 2018. Evaluation of Microbial Biocontrol Agents and Fungicides against Alternaria helianthi Causing Leaf Blight of Sunflower.Int.J.Curr.Microbiol.App.Sci. 7(1): 2726-2730. doi: https://doi.org/10.20546/ijcmas.2018.701.326