9 results on '"B. R. Maurya"'
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2. Integrated effect of bio-organics with chemical fertilizer on growth, yield and quality of cabbage (Brassica oleracea var capitata)
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RAJHANS VERMA, B R MAURYA, and VIJAY SINGH MEENA
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Cabbage ,Growth ,Humic acid ,Pseudomonas fluorescens ,Quality ,Yield ,Agriculture - Abstract
This experiment focused on the effects of Pseudomonas fluorescens and humic acid in combination with three different levels of fertilizers on growth, yield and quality traits of Brassica oleracea L. Results indicated that treatments comprising 100% recommended fertilizers package coupled with seedling treated with Pseudomonas fluorescens and humic acid caused significantly higher plant height, dry matter in leaves (head), higher number of non-wrapper leaves and head yield (54.38 tonnes/ha) over 50% recommended dose of fertilizer with Pseudomonas fluorescens applied. Treatment 50% recommended dose of fertilizer applied with Pseudomonas fluorescens and humic acid was at par with 100% recommended dose of fertilizer alone. Total carbohydrate content in head (40.46%) was significantly higher with use of 100% recommended dose of fertilizer with Pseudomonas fluorescens and humic acid. Maximum protein content (18.54%) was noticed with application of 100% recommended dose of fertilizer with Pseudomonas fluorescens and humic acid that was 10.90% higher than recommended dose of fertilizer alone. Fibre content in head was improved remarkably with the use of Pseudomonas fluorescens and humic acid. Significantly higher content of ascorbic acid (34.51 mg/100 g) in head was also registered with application of 100% recommended dose of fertilizer with Pseudomonas fluorescens and humic acid. more...
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- 2014
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3. Documentation of five potassium- and phosphorus-solubilizing bacteria for their K and P-solubilization ability from various minerals
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B. R. Maurya, Vijay Singh Meena, and Debabrata Nath
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0106 biological sciences ,Potassium ,chemistry.chemical_element ,Bioengineering ,010501 environmental sciences ,engineering.material ,01 natural sciences ,Applied Microbiology and Biotechnology ,chemistry.chemical_compound ,Botany ,Food science ,Incubation ,0105 earth and related environmental sciences ,biology ,Crop yield ,Muscovite ,Phosphorus ,biology.organism_classification ,Phosphate ,chemistry ,Phosphorite ,engineering ,Agronomy and Crop Science ,Bacteria ,010606 plant biology & botany ,Food Science ,Biotechnology - Abstract
The ability of a few soil bacteria to transform unavailable forms of phosphorus (P) and potassium (K) to an available form is an important feature in plant growth-promoting bacteria for increasing crop yields of high- P and K-demand crops. In this research, screening and characterization of thirty-five K-solubilizing bacterial (KSB) and P-solubilizing bacteria (PSB) isolate which were evaluated for their ability to solubilize K and P from the waste muscovite (WM), waste biotite (WB), tri-calcium phosphate (TCP) and rock phosphate (RP) by analyzing the soluble P and K content after 7, 14, 21 days after incubation (DAI) at 28±2 °C on MABs (Modified Aleksandrov Broths) and Pikovskaya's medium. The soluble P and K contents in all isolates were significantly (p more...
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- 2017
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4. Co-inoculation with Enterobacter and Rhizobacteria on Yield and Nutrient Uptake by Wheat (Triticum aestivum L.) in the Alluvial Soil Under Indo-Gangetic Plain of India
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Richa Raghuwanshi, Tofazzal Islam, Vijay Singh Meena, Ashok Kumar, and B. R. Maurya
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0106 biological sciences ,Rhizosphere ,biology ,Inoculation ,Crop yield ,food and beverages ,04 agricultural and veterinary sciences ,Plant Science ,Enterobacter ,biology.organism_classification ,Rhizobacteria ,01 natural sciences ,Test weight ,Agronomy ,Serratia marcescens ,040103 agronomy & agriculture ,Nitrogen fixation ,0401 agriculture, forestry, and fisheries ,Agronomy and Crop Science ,010606 plant biology & botany - Abstract
The aim of this work was to evaluate the effects of co-inoculation with phosphate-solubilizing and nitrogen-fixing rhizobacteria on growth promotion, yield, and nutrient uptake by wheat. Out of twenty-five bacteria isolated from the rhizosphere soils of cereal, vegetable, and agro-forestry plants in eastern Uttar Pradesh, three superior most plant growth-promoting (PGP) isolates were characterized as Serratia marcescens, Microbacterium arborescens, and Enterobacter sp. based on their biochemical and 16S rDNA gene sequencing data and selected them for evaluating their PGP effects on growth and yield of wheat. Among them, Enterobacter sp. and M. arborescens fixed significantly higher amounts (9.32 ± 0.57 and 8.89 ± 0.58 mg Ng−1 carbon oxidized, respectively) of atmospheric nitrogen and produced higher amounts (27.06 ± 1.70 and 26.82 ± 1.63 TP 100 µg mL−1, respectively) of IAA in vitro compared to S. marcescens (8.32 ± 0.39 mg Ng−1 carbon oxidized and 21.29 ± 0.99 TP 100 µg mL−1). Although both M. arborescens and S. marcescens solubilized remarkable amounts of phosphate from tricalcium phosphate likely through production of organic acids, however, Enterobacter sp. was inactive. The effects of these three rhizobacteria were evaluated on wheat in alluvial soils of the Indo-Gangetic Plain by inoculation of plants with bacterial isolates either alone or in combinations in both pot and field conditions for two successive years. Rhizobacterial inoculation either alone or in consortium of varying combinations significantly (P ≤ 0.05) increased growth and yield of wheat compared to mock inoculated controls. A consortium of two or three rhizobacterial isolates also significantly increased plant height, straw yield, grain yield, and test weight of wheat in both pot and field trials compared to single application of any of these isolates. Among the rhizobacterial treatment, co-inoculation of three rhizobacteria (Enterobacter, M. arborescens and S. marcescens) performed best in promotion of growth, yield, and nutrient (N, P, Cu, Zn, Mn, and Fe) uptake by wheat. Taken together, our results suggest that co-inoculation of Enterobacter with S. marcescens and M. arborescens could be used for preparation of an effective formulation of PGP consortium for eco-friendly and sustainable production of wheat. more...
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- 2017
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5. Identification and characterization of potassium solubilizing bacteria (KSB) from Indo-Gangetic Plains of India
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Madhumonti Saha, Vijay Singh Meena, Ashok Kumar, B. R. Maurya, and Indra Bahadur
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0106 biological sciences ,0301 basic medicine ,Oryza sativa ,biology ,Strain (chemistry) ,Potassium ,chemistry.chemical_element ,Bioengineering ,Musa × paradisiaca ,biology.organism_classification ,01 natural sciences ,Applied Microbiology and Biotechnology ,03 medical and health sciences ,030104 developmental biology ,chemistry ,Botany ,Pseudomonas azotoformans ,Food science ,Bacillus licheniformis ,Agronomy and Crop Science ,Incubation ,Bacteria ,010606 plant biology & botany ,Food Science ,Biotechnology - Abstract
The present investigation comprises a total of fifty potassium solubilizing bacterial (KSB) strains which were isolated from Oryza sativa, Musa paradisiaca, Zea mays, Sorghum bicolor and Triticum aestivum L. These strains were evaluated for their ability to solubilize the fixed K from waste biotite (WB). On the basis of K-solublization, the seven most efficient KSB strains were evaluated for K-solublizing dynamics from the WB at 7, 14 and 21 DAI (days after incubation) on MAMs (Modified Solid Aleksandrov Medium). Further, these screened seven KSB strains were used for their morphological, physiological and molecular chacterization. The KSB strains Bacillus licheniformis BHU18 and Pseudomonas azotoformans BHU21 showed significantly higher K-solublization 7.22 and 6.03 µg mL −1 at 30 °C and pH 7.0, respectively. A significantely higher zone of solubilization significantly higher was recorded with Pseudomonas azotoformans BHU21 (3.61 cm). Bacillus licheniformis BHU18 produced significantly higher (~23 µg mL −1 ) concentrations of indole-3-acetic acid. The diversity of KSB as bioinoculants to release potassium provides a win-win situation. Therefore, it is crucial to adopt efficient KSB strain interventions for the judicious use of chemical and biological resources for maximizing food production while reducing pollution and rejuvenating degraded land for agricultural benefit. more...
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- 2016
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6. Potassium solubilizing rhizobacteria (KSR): Isolation, identification, and K-release dynamics from waste mica
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Ashok Kumar, Kangmin Kim, B. R. Maurya, Vivek K. Bajpai, Jai Prakash Verma, Vijay Singh Meena, and Abhinav Aeron
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Rhizosphere ,Environmental Engineering ,Potassium ,chemistry.chemical_element ,Agrobacterium tumefaciens ,Management, Monitoring, Policy and Law ,engineering.material ,Biology ,Rhizobacteria ,Phosphate ,biology.organism_classification ,Horticulture ,chemistry.chemical_compound ,chemistry ,Botany ,engineering ,Ribosomal DNA ,Biotite ,Bacteria ,Nature and Landscape Conservation - Abstract
Injudicious application of chemical fertilizers in India has a considerable negative impact on economy and environmental sustainability. There is a growing need to turn back to nature or sustainable agents that promote evergreen agriculture. Among such natural bio-agents, the potassium solubilizing rhizobacteria (KSR), which solubilize fixed forms of potassium (K) to plant available K by various mechanisms including acidolysis, chelation, exchange reactions, complexolysis, and production of organic acids are considered one such available viable alternative. KSR represent an enormous potential to transform the problems associated with the agrarian sector. Twelve KSR were isolated from rhizosphere of common Kharif crops (maize, banana, sugarcane, potato, pigeon pea, and tobacco) based on their ability to solubilize waste mica (muscovite and biotite) in plate assay. All these KSR were capable of K-solubilization from waste mica in both solid and liquid medium in-vitro. On the basis of 16S ribosomal DNA (16S rDNA) sequencing, out of 12 KSR, 7 strains belonged to Agrobacterium tumefaciens species, 2 strains each representing Rhizobium pusense and Flavobacterium anhuiense clade, while one strain showed affiliation to Rhizobium rosettiformans. As a result, among the assessed 12 KSR, A. tumefaciens OPVS 11 and R. pusense OPVS6 occurred at the highest K-solubilizing frequency. Studies on mechanism of K-solubilization by these strains demonstrated significant reduction in media pH and increased K release with incubation period under both waste muscovite and biotite as a sole source of insoluble K mineral. more...
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- 2015
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7. Isolation and characterization of PGPR and their effect on growth, yield and nutrient content in wheat (Triticum aestivum L.)
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Akhilesh Kumar, B. R. Maurya, and Richa Raghuwanshi
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Siderophore ,biology ,fungi ,food and beverages ,Bioengineering ,Enterobacter ,Straw ,Microbial consortium ,biology.organism_classification ,Applied Microbiology and Biotechnology ,Horticulture ,Test weight ,Agronomy ,Nitrogen fixation ,Arthrobacter chlorophenolicus ,Agronomy and Crop Science ,Food Science ,Biotechnology ,Bacillus megaterium - Abstract
The aims of our study were to enhance growth, yield and micronutrient status of wheat crop by various combinations of microbial strains (Bacillus megaterium, Arthrobacter chlorophenolicus and Enterobacter sp.) under pot and field experiments. Microbial strains were isolated from soils of different cropping systems and characterized by biochemical and molecular methods. Microbial strains (B. megaterium BHU1 and A. chlorophenolicus BHU3) showed positive result for nitrogen fixation and phosphate solubilization, while Enterobacter sp. BHU5 gave positive result in nitrogen fixation only. However, A. chlorophenolicus and Enterobacter sp. showed HCN production while B. megaterium and Enterobacter sp. gave siderophore. Maximum N2-fixation and IAA production were observed with 15.0 mg N g−1 carbon by A. chlorophenolicus and 26.4 µg ml−1 at tryptophan 100 µg ml−1 by Enterobacter sp, respectively. Triple combination of strains B. megaterium, A. chlorophenolicus and Enterobacter significantly increased 17.5%, 79.8%, 78.6% and 26.7% plant height, grain yield, straw yield and test weight under pot condition and also 29.4%, 27.5%, 29.5% and 17.6% under field condition, respectively. Similarly these treatment combinations showed maximum nutrient acquisition and content of micronutrient viz. Fe, Cu, Mn and Zn in grain of wheat under both conditions. The results showed that the combined application of indigenous PGPR, B. megaterium, A. chlorophenolicus and Enterobacter can be used as efficient microbial consortium for wheat production. more...
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- 2014
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8. Does a rhizospheric microorganism enhance K+ availability in agricultural soils?
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Jay Prakash Verma, Vijay Singh Meena, and B. R. Maurya
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Bacteria ,biology ,Microorganism ,Crop yield ,Potassium ,Potash ,Fungi ,Plant Development ,food and beverages ,chemistry.chemical_element ,Agriculture ,Plants ,engineering.material ,biology.organism_classification ,Microbiology ,Soil ,Paenibacillus ,Agronomy ,chemistry ,Soil water ,Bacillus circulans ,engineering ,Fertilizer ,Soil Microbiology - Abstract
The potassium solubilizing microorganisms (KSMs) are a rhizospheric microorganism which solubilizes the insoluble potassium (K) to soluble forms of K for plant growth and yield. K-solubilization is carried out by a large number of saprophytic bacteria (Bacillus mucilaginosus, Bacillus edaphicus, Bacillus circulans, Acidothiobacillus ferrooxidans, Paenibacillus spp.) and fungal strains (Aspergillus spp. and Aspergillus terreus). Major amounts of K containing minerals (muscovite, orthoclase, biotite, feldspar, illite, mica) are present in the soil as a fixed form which is not directly taken up by the plant. Nowadays most of the farmers use injudicious application of chemical fertilizers for achieving maximum productivity. However, the KSMs are most important microorganisms for solubilizing of fixed form of K in soil system. The KSMs are an indigenous rhizospheric microorganism which shows effective interaction between soil and plant systems. The main mechanism of KSMs is acidolysis, chelation, exchange reactions, complexolysis and production of organic acid. According to literature, currently negligible use of potassium fertilizer as a chemical form has been recorded in agriculture for enhancing crop yield. Most of the farmers use only nitrogen and phosphorus and not use the K fertilizer due to unawareness so that the problem of K deficiency occurs in rhizospheric soils. The K fertilizer is also costly as compared to other chemical fertilizers. Therefore, the efficient KSMs should be applied for solubilization of a fixed form of K to an available form of K in the soils. This available K can be easily taken up by the plant for growth and development. Our aim of this review is to elaborate on the studies of indigenous K-solubilizing microbes to develop efficient microbial consortia for solubilization of K in soil which enhances the plant growth and yield of crops. This review highlights the future need for research on potassium (K) in agriculture. more...
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- 2014
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9. Effectiveness of rhizobial strains with and without co-inoculants and phosphate on bengal gram (Cicer arietinum)
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B. R. Maurya and C. L. Sanoria
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chemistry.chemical_compound ,Horticulture ,chemistry ,Botany ,Genetics ,Bengal gram ,Animal Science and Zoology ,Phosphate ,Agronomy and Crop Science ,Microbial inoculant - Abstract
That rhizobial strains belonging to pulses not only differ among themselves but also show differences in their effectiveness when Azotobacter isolates are used as co-inoculants has been shown by Sanoria & Ram (1979) and Sanoria & Mallik (1981). This has now been further demonstrated in trials conducted over 2 years using bengal gram. These trials also included a phosphate solubilizing bacterium (Pseudomonas spp.) as an extra inoculant but it had no effect on the responses obtained. more...
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- 1982
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