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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.
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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(9): 2696-2702
DOI: https://doi.org/10.20546/ijcmas.2018.709.335


Biocontrol Mechanisms of Efficient Azotobacter Isolates against Fusarium solani Causing Fusarium wilt of Chilli (Capsicum annum L.) under in vitro Conditions
Swapna1*, K. Tamil Vendan1, Mahadevaswamy1, D.S. Aswathanarayana2 and R.C. Gundappagol1
1Department of Agricultural Microbiology
2Department of Plant Pathology, College of Agriculture, University of Agricultural Sciences, Raichur – 584104, Karnataka, India
*Corresponding author
Abstract:

In the present investigation, four efficient Azotobacter isolates were screened for various biocontrol traits and evaluated for its biological deterrent activity against Fusarium solani. Maximum per cent inhibition of 60.25 was observed in AZT-R7 isolate followed by AZT-Y2 (59.17 %), AZT-J1 (57.77 %) and AZT-G4 (51.47 %). AZT-R7 recorded a maximum siderophore, IAA production and highest N2 fixation of 82.83 per cent, 100.75 μg 50 ml-1 and 10.33 mg g-1, respectively. All the four isolates showed positive for the HCN test and the two isolates AZT-R7 and AZT-G4 showed positive for the H2S test and AZT-G4 for Phosphorus solubilization. Therefore, Azotobacter isolate AZT-R7 can be recommended for commercial production as a potential biocontrol agent and an alternative to P. fluorescens against Fusarium wilt in chilli grown in Hyderabad Karnataka region.


Keywords: Azotobacter, Biocontrol mechanisms, Chilli, F. solani
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How to cite this article:

Swapna, K. Tamil Vendan, Mahadevaswamy, D.S. Aswathanarayana and Gundappagol, R.C. 2018. Biocontrol Mechanisms of Efficient Azotobacter Isolates against Fusarium solani Causing Fusarium wilt of Chilli (Capsicum annum L.) under in vitro Conditions.Int.J.Curr.Microbiol.App.Sci. 7(9): 2696-2702. doi: https://doi.org/10.20546/ijcmas.2018.709.335