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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.2020.9(8): 3136-3142
DOI: https://doi.org/10.20546/ijcmas.2020.908.357


Changes in Soil Microbial Population and Enzymatic Activity under Different Plant Growth-Promoting Rhizobacteria and Weed Management Practices in Direct-Seeded Upland Rice
Jimni Phukan*, Jayanta Deka and Sontara Kalita
Department of Agronomy, College of Agriculture, Assam Agricultural University,Jorhat-785013 (Assam), India
*Corresponding author
Abstract:

A field experiment was carried out at Assam Agricultural University, Jorhat (Assam) in direct seeded rice (DSR) during autumn, 2018. The treatments consisted of three Plant growth-promoting rhizobacteria (PGPR) inoculations viz., Bacillus cereus, Pseudomonas fluorescens and no inoculation and four weed management practices viz., pretilachlor pre-emergence @ 0.75 kg/ha, pretilachlor pre- emergence @ 0.75 kg/ha followed by one hand weeding at 30 DAS, three hand weedings at 15, 30 & 45 DAS and weedy check. Results revealed that higher bacterial population was due to inoculation of Pseudomonas fluorescens which was followed by Bacillus cereus, but fungal population was found higher with the inoculation of Bacillus cereus followed by Pseudomonas fluorescens. Bacterial and fungal population and enzymatic activity decreased significantly due to either sole application of pretilachlor or in combination with hand weeding compared to three hand weeding and weedy check. The phosphomonoesterace and dehydrogenase activity were significantly higher with Pseudomonas fluorescens followed by Bacillus cereus. Grain and straw yield of DSR were higher with Pseudomonas fluorescens followed by Bacillus cereus and among weed management practices, it was higher with three hand weedings which was followed by pretilachlor pre-emergence @ 0.75 kg/ha + one hand weeding at 30 DAS.


Keywords: Direct-seeded upland rice, Plant growth-promoting rhizobacteria, Pretilachlor, Pseudomonas fluorescens, Bacillus cereus, Phosphomono-esterace activity, Dehydrogenase activity
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How to cite this article:

Jimni Phukan, Jayanta Deka and Sontara Kalita. 2020. Changes in Soil Microbial Population and Enzymatic Activity under Different Plant Growth-Promoting Rhizobacteria and Weed Management Practices in Direct-Seeded Upland Rice.Int.J.Curr.Microbiol.App.Sci. 9(8): 3136-3142. doi: https://doi.org/10.20546/ijcmas.2020.908.357