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 effect of three organic amendment viz., farm yard manure, vermicompost and mustard cake on survival of bioagents . The population of four bioagents i.e. Trichoderma harzianum, Trichoderma viride, pseudomonas fluorescens and Bacillus subtilis. significantly higher in three amended soil as compared to unamended control. The four respective bioagents were enumerated in selective media at monthly interval up to 180 days of soil application of bio-agents. The recovery of this bio-agent was found at 30 days after application as compared to 0 day i.e. immediate after soil application. The survival of the bioagent was relatively better in mustard cake amended soil as compared to farm yard manure and vermicompost amended soils. The population of T. viride was considerably less in unamended soil as compared to amended soils. The population of P. fluorescens was considerably higher in amended soils as compared to control i.e. unamended soil. The population of this bacterium in soil gradually decreased from 30 days of soil applications onwards up to 180 days. Survival of the bacterium was higher in mustard cake and vermicompost amended soil as compared to soils amended with farm yard manure. Statistical analysis of data revealed that A perusal of the data given in table 4 showed that mustard cake and vermicompost was slightly better for survival of B. subtilis in comparison to farm yard manure. The survival of B. subtilis was relatively less in unamended control in comparison to amended soils.
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