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 |
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.
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