Browsing by Author "V.S. Meena"

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Can we use maize (Zea mays) Rhizobacteria as Plant Growth Promoter?
(Society for Plant Research, 2015) N.P. Singh; R.K. Singh; V.S. Meena; R.K. Meena
Plant Growth Promoting Rhizobacteria (PGPR) is a group of bacteria that has the ability to enhance plant growth and yield via various plant growth promoting substances as well as biofertilizers. Ten bacterial isolates screened from rhizosphere of maize growing at Indo- Gangetic plain of eastern Uttar Pradesh, India showed potential nutrients solubilization and plant growth promoting activities. Rhizobacterial were able to produce phytohormone auxin (IAA) in the tryptophan supplemented medium which showed maximum production by strain BHU8. Phosphate solubilization activity was highly observed in isolate BHU8 followed by BHU3, BHU9 and BHU10. Plant cell wall hydrolyzing enzymes (Cellulase and Pectinase) were expressed in BHU3, BHU8, BHU9 and BHU10 and among ten rhizobacterial strains only six strains (BHU1, BHU2, BHU3, BHU5, BHU8 and BHU10) produced siderophore. Based on 16S rDNA gene sequence strains BHU1, BHU2, BHU3, BHU8, BHU10 showed 99.6%, 99.8%, 99.8%, 99.7% and 99.9% sequence alignment respectively with Pseudomonas brassicacearum, Pseudomonas taiwanensis Pseudomonas aeruginosa, Pseudomonas saponiphila and Pseudomonas oryzihabitans, respectively whereas strains BHU4 and BHU5 showed 99.7% similarity with Rhizobium radiobacter and strains BHU6 and BHU9 showed 99.9% sequence aligned with Bacillus oceanisediminis and Bacillus flexus, respectively. Strain BHU7 exhibited 99.9% similarity with Enterobacter asburiae. © 2015 Society for Plant Research. All rights reserved.
Does a plant growth promoting rhizobacteria enhance agricultural sustainability?
(Journal of Pure and Applied Microbiology, 2015) Ashok Kumar; I. Bahadur; B.R. Maurya; R. Raghuwanshi; V.S. Meena; D.K. Singh; J. Dixit
Rhizosphere soil has large diversity of microbial community, including. microorganisms which caused plant growth promoting activity. The plant growth promoting rhizobacteria (PGPR) colonize roots, increased root branching, root number and enhanced growth through direct and indirect mechanisms. PGPR modified root architecture by production of phytohormones, siderophores, HCN, Nitrogen fixation and Phosphate solubilization mechanisms. PGPR also modify root functioning, improve plant nutrition and influence the physiology of the whole plant. N-fixers and P-soIubilizers play key role in plant growth and yield of various crops. However the PGPR also play very crucial role to maintain the soil fertility and health. In this paper, we address the effect of PGPR on growth, yield and fertility status in rhizosphere soil. Synergetic interactions of combined inoculation of PGPR strains might be more effective for various crops growth and yield. PGPR along with integrated nutrient management may be more effective for growth, yield and fertility status under sustainable agriculture.
EFFECTS OF CHEMICAL FERTILIZER, FYM AND BIO-INOCULANTS ON NUTRIENT CONTENT, UPTAKE AND QUALITY OF WHEAT (TRITICUM AESTIVUM L.)
(Bangladesh Botanical Society, 2021) Hanuman Prasad Parewa; J. Yadav; V.S. Meena; A. Rakshit
Effects of different levels of chemical fertilizer, farmyard manure (FYM) and bio-inoculants on nutrient content, uptake and quality parameter of wheat were studied. Results indicated that increasing levels of chemical fertilizer, FYM and bio-inoculants significantly enhanced nutrient content and uptake by wheat, while quality parameters of wheat showed significant results with bio-inoculants application. Maximum N, P and K content and their uptake in grain (80.3, 11.07 and 25.29%, respectively) and straw (32.18, 7.14 and 95.92%, respectively) were noticed with 100% NPK over control. Application of FYM @ 10 t/ha significantly increased nutrient content (NPK) in grain and straw and their uptake over the control. The total N, P and K uptake by wheat were found to be maximum 80.97, 12.68 and 86.10 kg/ha, respectively with the application of FYM over control. Combined use of fertilizer levels and FYM, and combined use of fertilizer levels and bio-inoculants significantly increased the nutrient uptake by wheat. © 2021 Bangladesh Botanical Society. All rights reserved.
Plant growth-promoting rhizobacteria: strategies to improve abiotic stresses under sustainable agriculture
(Taylor and Francis Inc., 2019) A. Kumar; J.S. Patel; V.S. Meena; P.W. Ramteke
The abiotic stresses like drought, heavy metal and salts directly or indirectly influence the global environmental pollution and decrease the agricultural productivity. The stress tolerant plant growth promoting rhizobacteria (PGPR) play an important role against the abiotic stresses in terms of enhancing the efficacy of soil, plant growth promotion (PGP). Stress tolerance PGPRs have certain specific PGP properties such as hormones synthesis, 1-aminocyclopropane-1-carboxylate (ACC) deaminase, Indole-3-acetic acid (IAA) production, Abscisic acid (ABA) synthesis, enzymes production, nitrogen fixation, phosphorus (P) and Potassium (K) solubilization, as results which protect various crops during such stress conditions and consequently enhance crop sustainability. Efficient PGPRs isolated from various stress conditions have certainly, more useful against that particular stress. This article highlighted the isolation of various stresses tolerant PGPRs from varieties of crops under different stress conditions and their effect on varieties of crops to enhance their plant growth promotion. © 2019, © 2019 Taylor & Francis Group, LLC.
Potassium solubilization by bacterial strain in waste mica
(Bangladesh Botanical Society, 2014) V.S. Meena; B.R. Maurya; Indra Bahadur
The release of K from waste mica (muscovite and biotite) was tested with 4 K-solubilizing isolates collected from maize rhizosphere, for 7, 14 and 21 days of incubation at 28 ± 2°C. K-solubilization by different bacterial isolates showed significant change on muscovite and biotite powder supplemented plates and the amount of K released varied from 1.28-46.75 μg/ml. The soluble K contents in all isolated treatments were significantly higher than control. Herein, isolate KSB2 had higher K-solubilization ability when compared with other isolates (KSB1, KSB3 and KSB4) in vitro.
Residual impact of wellgrow formulation and NPK on growth and yield of wheat (Triticum aestivum L.)
(Bangladesh Botanical Society, 2015) V.S. Meena; B.R. Maurya; R.S. Meena
Effect of concentrate organic manure (wellgrow grain and wellgrow soil) and NPK improved the growth and yield of wheat. Significant improvement in terms of growth parameters like plant height, tillers, dry matter production and productive tillers with application of 120 : 60 : 60 NPK + 300 kg wellgrow soil/ha and at par with application of 120 : 60 : 60 NPK + 300 kg wellgrow grain/ha, treatment receiving 100% NPK + 300 kg wellgrow soil/ha resulted maximum grain yield (4545 kg /ha). Treatment of 100% NPK + 300 kg wellgrow grain/ha maintained higher straw yield (5715 kg/ha) and test weight (44.10 g) due to application of 100% NPK along with 200 kg wellgrow soil/ha whereas it was at par with application of 75 and 100% NPK with both levels of wellgrow formulation.
Response of groundnut (Arachis hypogaea L.) varieties to sowing dates and NP fertilizers under western dry zone of India
(Bangladesh Botanical Society, 2014) R.S. Meena; R.S. Yadav; V.S. Meena
An experiment was conducted during Kharif seasons of 2009 and 2010 on groundnut (Arachis hypogaea L.) under western dry zone of India following a split-plot design with four dates of sowing (April 20, May 15, June 9 and July 4) and two varieties (HNG 10 and TG 37A) in main-plot and four fertility levels (0, 20 N: 40 P2O5, 30 N: 60 P2O5 and 40 N: 80 P2O5 kg/ha) in sub-plot. Yield component of semispreading variety 'HNG 10' i.e. pods/plant, number of kernel/pod, seed index, shelling percentage and yields i.e. pod, kernel, haulm and biological yield were statistically at par with each other from April 20 to June 9 sowing and minimum yield was observed in July 4 sowing, while days to maturity reduced significantly with delay sowing. Variety 'TG 37A' sown at July 4 had significantly higher yield attributes and yields than earlier sowing. Harvest index in both the varieties was observed significantly higher in July 4 sowing. Significantly higher yield components and yields were recorded in 30 kg N-60 kg P2O5/ha which was statistically at par with 40 kg N-80 kg P2O5/ha. On the basis of economics, June 9 sowing variety 'HNG 10' of groundnut recorded significantly higher net return.