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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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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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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.2017.6(9): 1145-1153
DOI: https://doi.org/10.20546/ijcmas.2017.609.138


Evaluation of Different Carrier Materials for Development of Bacterial Bio-Control Agents Formulations with Enhanced Shelf-Life
S.M. Jayasudha*, K.C. Kirankumar, Eranna Rajashekhara and Rudresh
Department of Plant Pathology, College of Horticulture, Bagalkot University of Horticultural sciences, Bagalkot- 587103, Karnataka, India
*Corresponding author
Abstract:

The environmental pollution and risk of resistance development in the pathogen by the use of chemical pesticide makes necessary to use biological agents. However the major limitations to utilize biological agents are the inconsistency, unreliable efficacy and short shelf life of the living entities used in the formulation. In this context an experiment was conducted to formulate four bacterial bio-agents viz., Bacillus subtilis-KK-9A, Brevibacillus borstelensis-BK-6, Brevibacillus sp-PM-2A and Lysinibacillus xylanilyticus- VK-6B and consortium of them. Seven carrier materials viz., bentonate, kaolin, perlite, phytosil, talc, vermiculite and zeolite were used and studied the shelf life of bio-agents in this carrier material up to 90 days. Among seven carrier materials vermiculite recorded the highest number of colonies of all the four bio-agents and consortium when checked at fifteen days interval up to three months. This is followed by zeolite, kaolin, perlite, talc, bentonite and phytosil in the order of their efficacy. Further the highest survival % (21.6, 46.3, 30.3, 28.2 and 32.1) of all the four bio-agents and consortium respectively was observed in vermiculite based formulation. However, least survival percentage of Bacillus subtilis-KK-9A (3.7), Brevibacillus borstelensis-BK-6(3.15), Brevibacillus sp-PM-2A (3.7) and Lysinibacillus xylanilyticus- VK-6B (10.1) and consortium (2.9) was recorded in phytosil based formulation at 90th day.


Keywords: Bacterial bio-agents, Carrier material, Formulation, Shelf life.
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How to cite this article:

Jayasudha, S.M., K.C. Kirankumar, Eranna Rajashekhara and Rudresh. 2017. Evaluation of Different Carrier Materials for Development of Bacterial Bio-Control Agents Formulations with Enhanced Shelf - Life.Int.J.Curr.Microbiol.App.Sci. 6(9): 1145-1153. doi: https://doi.org/10.20546/ijcmas.2017.609.138