scholarly journals Elucidating the Rhizosphere Associated Bacteria for Environmental Sustainability

Agriculture ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 75
Author(s):  
Blessing Chidinma Nwachukwu ◽  
Ayansina Segun Ayangbenro ◽  
Olubukola Oluranti Babalola
Keyword(s):  
Environmental Sustainability ◽  
Rhizosphere Soil ◽  
Biofuel Production ◽  
Growth And Yield ◽  
Biotechnological Applications ◽  
Chemical Fertilizers ◽  
Associated Bacteria ◽  
Bacterial Inoculants ◽  
Bacterial Concentrations

The abundance of nutrient accumulation in rhizosphere soils has placed the rhizosphere as an “epicenter” of bacterial concentrations. Nonetheless, over the years, little attention has been given to bacterial inoculants and soil-like substrates. The reason is that many farmers and experiments have focused on chemical fertilizers as an approach to improve plant growth and yield. Therefore, we focused on assessing the application of rhizosphere soil and its associated bacteria for biotechnological applications. This review has been structured into major subunits: rhizosphere soil as a treasure trove for bacterial community concentration, biodegradation of lignocellulose for biofuel production, rhizosphere soil and its bacteria as soil amendments, and the role of rhizosphere soil and its bacteria for bioremediation and biofiltration. Hence, the efficient use of rhizosphere soil and its bacteria in an environmentally friendly way can contribute to healthy and sustainable environments.

Effects of Cyanobacterial Inoculation on the Growth and Yield of Triticum aestivum L. var. Deva K9117

2017 ◽  
Vol 3 (02) ◽  
pp. 31-34
Author(s):  
Vinod Rishi ◽  
Ravindra Singh ◽  
A. K. Awasthi
Keyword(s):  
Triticum Aestivum ◽  
Environmental Sustainability ◽  
Agricultural Soils ◽  
Triticum Aestivum L ◽  
Growth And Yield ◽  
Research Approach ◽  
Average Height ◽  
Chemical Fertilizers ◽  
Nostoc Linckia ◽  
Anabaena Fertilissima

The exponential growth in human population is become a serious concern in terms of their nutritional requirements. For the solution of this problem several methods and technologies have been adopted like development of high yielding varieties with improved agricultural practices. These varieties require more chemical fertilizers for the maximum production but excessive utilization of these chemical fertilizers may cause the deficiencies and infertility in the agricultural soils. So there is need to replace these chemical fertilizers with biological fertilizers due to their environmental sustainability. The utilization of cyanobacteria as bio-fertilizers are an eco-friendly, easily manageable and self-regenerating process which improve the nutrient status as well as health of soil. In addition to biological nitrogen fixation they also produce several growth promoting substances. During the present investigations we have adopted an experimental research approach to examine the effects of cyanobacteria (inoculation of live Anabaena fertilissima C.B. Rao and Nostoc linckia Bornet ex Bornet and Flahault isolates collected from river Ganga at Kanpur, U.P, India) as bio-fertilizer in Triticum aestivum L. var. Deva K9117 on the basis of average height of plants, weight of grains and number of grains/spike. The observations showed significant changes/improvements in growth and productivity of Triticum aestivum L. var. Deva K9117. The inoculation of Anabaena fertilissima C.B. Rao (100 ml) increased the 19.81% grains/spike, 9.86% weight of grains and 7.91% height of plants while inoculation of Nostoc linckia Bornet ex Bornet and Flahault (100 ml) increased the 19.36% grains/spike, 7.27% weight of grains and 5.64% height of plants over the control. The most considerable finding of the study was the mixture of Anabaena fertilissima C.B. Rao+Nostoc linckia Bornet ex Bornet and Flahault (60:40) increased 24.32% grains/spike, 15.09% weight of grains and 10.09% height of plants over the control.

scholarly journals The Growth and Yield of Sweet Corn Fertilized by Dairy Cattle Effluents Without Chemical Fertilizers in Inceptisols

2013 ◽  
Vol 16 (2) ◽  
pp. 139-143
Author(s):  
Yudi Sastro ◽  
Indarti Puji Lestari
Keyword(s):  
Dairy Cattle ◽  
Sweet Corn ◽  
Growth And Yield ◽  
Fertilizer Treatment ◽  
Chemical Fertilizers ◽  
Agronomic Effectiveness ◽  
Randomized Design ◽  
Relative Agronomic Effectiveness ◽  
Completely Randomized Design

Several research has proven the role of dairy cattle effluents in improving the growth and yield of some crops. However, its role in supporting the growth and yield of sweet corn, especialy in Inceptisols, has not been reported. The study aims to determine the effect of dairy cattle effluents on growth and yield of sweet corn in Inceptisols. The pot study was conducted in a greenhouse of the Assessment Institute for Agriculture Technology of Jakarta. The treatments were fertilization using dairy cattle effluents (without dilution, dilution with water 1:1 and 1:2), a mixtureof Urea, SP-36 and KCl (NPK), and without fertilizer. The experimental design was a completely randomized design with five replications. Compared to a without fertilizer treatment, dairy cattle effluents were significantly increased plant height (114%), leaf number (136%), cob weight (131%), cob length (124%), and cob diameters (128%). Base on cob weight, relative agronomic effectiveness (RAE) of dairy cattle effluents reached 38.4% (without dilution), 47.5% (dilution with water 1:1), and 62.1% (dilution with water 1:2).Keywords: Dairy cattle effluents, fertilizer, sweet corn

scholarly journals Perlakuan Pupuk Kandang Untuk Mengurangi Dosis Pupuk Kimia Pada Budidaya Tanaman Cabai (Capsicum annuum L.)

2021 ◽  
Vol 7 (2) ◽  
pp. 262-271
Author(s):  
I Komang Damar Jaya ◽  
Bambang Budi Santoso ◽  
Jayaputra Jayaputra
Keyword(s):  
Capsicum Annuum ◽  
Block Design ◽  
Chemical Fertilizer ◽  
Chicken Manure ◽  
Growth And Yield ◽  
Chemical Fertilizers ◽  
Capsicum Annuum L ◽  
Randomized Block Design ◽  
Goat Manure

The use of high doses of chemical fertilizers in the production of chili (Capsicum annuum L.) has an adverse impact on the environment, especially in dryland. This study aimed to examine the role of cow manure (PKS), goat manure (PKK), chicken manure (PKA), or a combination of two manures in reducing 25% of the requirement for chemical fertilizer on chili plants. One experiment was carried out in the dryland of Gumantar Village, North Lombok Regency, from May to October 2021. Phonska NPK (15-15-15) chemical fertilizer (PK) at a 1,200 kg/ha dose was used as a control. The treatments tested were 75% PK+PKS, 75% PK+PKK, 75% PK+PKA, 75% PK+PKS+PKK, 75% PK+PKS+PKA and 75% PK+PKK+PKA. The dose of manure used in each treatment was 20 tons/ha. All treatments were repeated three times and arranged in a randomized block design. The results showed that the treatment of manure, especially goat manure and chicken manure, increased the available phosphate (P) in the soil. The growth and yield of chili plants were not significantly different in all treatments, which means that manure could replace the role of 25% of the chemical fertilizer used. These results indicate that manure in the long term can reduce the need for chemical fertilizers to produce chili in dryland.  Key words: chili; dryland; manure; chemical fertilizer; nutrition

scholarly journals Role of Beneficial Microorganisms and Salicylic Acid in Improving Rainfed Agriculture and Future Food Safety

2020 ◽  
Vol 8 (7) ◽  
pp. 1018 ◽  
Author(s):  
Naeem Khan ◽  
Asghari Bano ◽  
José Alfredo Curá
Keyword(s):  
Organic Matter ◽  
Salicylic Acid ◽  
Plant Growth ◽  
Rhizosphere Soil ◽  
Combined Treatment ◽  
Moisture Stress ◽  
Growth And Yield ◽  
Growth Promoting ◽  
Aba Content

Moisture stress in rainfed areas has significant adverse impacts on plant growth and yield. Plant growth promoting rhizobacteria (PGPR) plays an important role in the revegetation and rehabilitation of rainfed areas by modulating plant growth and metabolism and improving the fertility status of the rhizosphere soils. The current study explored the positive role of PGPR and salicylic acid (SA) on the health of the rhizosphere soil and plants grown under rainfed conditions. Maize seeds of two different varieties, i.e., SWL-2002 (drought tolerant) and CZP-2001 (drought sensitive), were soaked for 4 h prior to sowing in 24-h old culture of Planomicrobium chinense strain P1 (accession no. MF616408) and Bacillus cereus strain P2 (accession no. MF616406). The foliar spray of SA (150 mg/L) was applied on 28-days old seedlings. The combined treatment of the consortium of PGPR and SA not only alleviated the adverse effects of low moisture stress of soil in rainfed area but also resulted in significant accumulation of leaf chlorophyll content (40% and 24%), chlorophyll fluorescence (52% and 34%) and carotenoids (57% and 36%) in the shoot of both the varieties. The PGPR inoculation significantly reduced lipid peroxidation (33% and 23%) and decreased the proline content and antioxidant enzymes activities (32% and 38%) as compared to plants grown in rainfed soil. Significant increases (>52%) were noted in the contents of Ca, Mg, K Cu, Co, Fe and Zn in the shoots of plants and rhizosphere of maize inoculated with the PGPR consortium. The soil organic matter, total nitrogen and C/N ratio were increased (42%), concomitant with the decrease in the bulk density of the rhizosphere. The PGPR consortium, SA and their combined treatment significantly enhanced the IAA (73%) and GA (70%) contents but decreased (55%) the ABA content of shoot. The rhizosphere of plants treated with PGPR, SA and consortium showed a maximum accumulation (>50%) of IAA, GA and ABA contents, the sensitive variety had much higher ABA content than the tolerant variety. It is inferred from the results that rhizosphere soil of treated plants enriched with nutrients content, organic matter and greater concentration of growth promoting phytohormones, as well as stress hormone ABA, which has better potential for seed germination and establishment of seedlings for succeeding crops.

scholarly journals Environmental Sustainability: A Review of Termite Mound Soil Material and Its Bacteria

2019 ◽  
Vol 11 (14) ◽  
pp. 3847 ◽  
Author(s):  
Ben Enagbonma ◽  
Olubukola Babalola
Keyword(s):  
Environmental Sustainability ◽  
Potential Application ◽  
Soil Amendment ◽  
Biofuel Production ◽  
Gold Mine ◽  
Agricultural Crops ◽  
Termite Mound ◽  
Bacterial Concentration ◽  
Soil Material

The high quantity of nutrients accumulated in termite mound soils have placed termite mound as a ‘gold mine’ for bacteria concentrations. However, over the years, not much attention has been given to the bacteria present in termite mound soil. This is because many studies have focused on approaches to manage termites which they see as menace to agricultural crops and buildings. Therefore, we aimed to evaluate the potential application of termite mound soil material and its bacteria for biotechnological purposes. This review has been grouped into four key parts: The termite mound as hotspot for bacterial concentration, the degradation of lignocellulose for biofuel production, termite mound soil as a soil amendment, and the role of termite mound soil and its bacteria in bioremediation and bio-filtration. Therefore, the effective usage of the termite mound soil material and its bacteria in an ecofriendly manner could ensure environmental sustainability.

scholarly journals Biological, Biochemical and Thermochemical Techniques for Biofuel Production: an Updated Review

2021 ◽  
Vol 12 (3) ◽  
pp. 3034-3054
Keyword(s):  
Environmental Sustainability ◽  
Clean Energy ◽  
World Market ◽  
Biofuel Production ◽  
Energy Demands ◽  
Environmental Deterioration ◽  
Energy Needs ◽  
The Right

Environmental sustainability requirements and rising energy demands, as well as the depletion of conventional energy resources and environmental deterioration as a result of abrupt climate change, have redirected scientists' focus. For sustainable development, look for renewable sources of green and clean energy. Bioenergy is a great alternative because it may be used to meet a variety of energy needs with the right conversion technology. This overview covers all aspects of biofuels (bioethanol, biodiesel, and butanol) and the criteria for their long-term viability. The focus is on the most recent breakthroughs in biofuel production, emphasizing the role of nanotechnology. In addition, a slew of studies is being conducted on developing strategies for process optimization, such as integration methodologies, less energy-intensive distillation processes, and microbe bioengineering talked about. This can assist in making biofuel production in a real-world market more economically and environmentally viable.

scholarly journals Characterization of symbiotic and associated bacteria from entomopathogenic nematode Heterorhabditis sp. (nematode: Heterorhabditidae) isolated from India

2020 ◽  
Vol 30 (1) ◽  
Author(s):  
Rashid Pervez ◽  
Showkat Ahmad Lone ◽  
Sasmita Pattnaik
Keyword(s):  
Insect Pests ◽  
Entomopathogenic Nematode ◽  
Alcaligenes Faecalis ◽  
Symbiotic Bacteria ◽  
Rrna Gene ◽  
Main Body ◽  
Associated Bacteria ◽  
Molecular Approaches

Abstract Background Entomopathogenic nematodes (EPNs) harboring symbiotic bacteria are one of the safest alternatives to the chemical insecticides for the control of various insect pests. Infective juveniles of EPNs locate a target insect, enter through the openings, and reach the hemocoel, where they release the symbiotic bacteria and the target gets killed by the virulence factors of the bacteria. Photorhabdus with Heterorhabditis spp. are well documented; little is known about the associated bacteria. Main body In this study, we explored the presence of symbiotic and associated bacteria from Heterorhabditis sp. (IISR-EPN 09) and characterized by phenotypic, biochemical, and molecular approaches. Six bacterial isolates, belonging to four different genera, were recovered and identified as follows: Photorhabdus luminescens, one each strain of Providencia vermicola, Pseudomonas entomophila, Alcaligenes aquatilis, and two strains of Alcaligenes faecalis based on the phenotypic, biochemical criteria and the sequencing of 16S rRNA gene. Conclusion P. luminescens is symbiotically associated with Heterorhabditis sp. (IISR-EPN 09), whereas P. vermicola, P. entomophila, A. aquatilis, and A. faecalis are the associated bacteria. Further studies are needed to determine the exact role of the bacterial associates with the Heterorhabditis sp.

Role of microalgae in circular bioeconomy: from waste treatment to biofuel production

2021 ◽  
Author(s):  
Juliana Botelho Moreira ◽  
Thaisa Duarte Santos ◽  
Jessica Hartwig Duarte ◽  
Priscilla Quenia Muniz Bezerra ◽  
Michele Greque de Morais ◽  
...  
Keyword(s):  
Waste Treatment ◽  
Biofuel Production
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