Changes in soil microbial population and enzymatic activity under different plant growth-promoting rhizobacteria and weed management practices in direct-seeded upland rice

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 @ kg/ha, pretilachlor pre- emergence @ 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. |

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