Evaluating the Impacts of Azotobacter chroococcum Inoculation on Soil Stability and Plant Property of Maize Crop

Song, Yingying; Li, Zhuo; Liu, Jiawen; Zou, Yan; Lv, Changning; Chen, Fajun

doi:10.1007/s42729-020-00404-w

Cited by 15 publications

(4 citation statements)

References 27 publications

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“…In various studies conducted to establish the role of PGPR in increasing nutrient availability and plant growth promotion, inoculation of Azotobacter chroococcum was found to increase the the contents of total nitrogen (N) and total phosphorus (P) in maize plants relative to the uninoculated control treatment ( Song et al (2021) . A. chroococcum treatments changed the contents of soil ammonium-N (NH 4 + -N) at the seedling stage (+17.78%) and heading stage (+34.48%), as well as soil nitrate-N (NO x -N; −23.94%) and soil available P (Olsen-P; −15.38%) at the heading stage.…”

Section: Mechanisms Of Action Of Beneficial Microbesmentioning

confidence: 99%

Biofertilizers: An ecofriendly technology for nutrient recycling and environmental sustainability

Kumar

Diksha

Sindhu

et al. 2022

Current Research in Microbial Sciences

248

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Highlights Agriculture plays an important role in a country's economy. In modern intensive agricultural practices, chemical fertilizers and pesticides are applied on large scale to increase crop production in order to meet the nutritional requirements of the ever-increasing world population. However, rapid urbanization with shrinking agricultural lands, dramatic change in climatic conditions and extensive use of agrochemicals in agricultural practices has been found to cause environmental disturbances and public health hazards affecting food security and sustainability in agriculture. Besides this, agriculture soils are continuously losing their quality and physical properties as well as their chemical (imbalance of nutrients) and biological health due to indiscriminate use of agrochemicals. Plant-associated microbes with their plant growth- promoting traits have enormous potential to solve these challenges and play a crucial role in enhancing plant biomass and crop yield under greenhouse and field conditions. The beneficial mechanisms of plant growth improvement include enhanced availability of nutrients (i.e., N, P, K, Zn and S), phytohormone modulation, biocontrol of phytopathogens and amelioration of biotic and abiotic stresses. This plant-microbe interplay is indispensable for sustainable agriculture and these microbes may perform essential role as an ecological engineer to reduce the use of chemical fertilizers. Various steps involved for production of solid-based or liquid biofertilizer formulation include inoculum preparation, addition of cell protectants such as glycerol, lactose, starch, a good carrier material, proper packaging and best delivery methods. In addition, recent developments of formulation include entrapment/microencapsulation, nano-immobilization of microbial bioinoculants and biofilm-based biofertilizers. Thus, inoculation with beneficial microbes has emerged as an innovative eco-friendly technology to feed global population with available resources. This review critically examines the current state-of-art on use of microbial strains as biofertilizers in different crop systems for sustainable agriculture and in maintaining soil fertility and enhancing crop productivity. It is believed that acquisition of advanced knowledge of plant-PGPR interactions, bioengineering of microbial communities to improve the performance of biofertilizers under field conditions, will help in devising strategies for sustainable, environment-friendly and climate smart agricultural technologies to deliver short and long terms solutions for improving crop productivity to feed the world in a more sustainable manner.

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Section: Mechanisms Of Action Of Beneficial Microbesmentioning

confidence: 99%

Biofertilizers: An ecofriendly technology for nutrient recycling and environmental sustainability

Kumar

Diksha

Sindhu

et al. 2022

Current Research in Microbial Sciences

248

View full text Add to dashboard Cite

show abstract

“…To solve this problem, in some studies, the population change of microorganisms in VC and the improvement of the quality of organic fertilizers have been tested recently [18]. In addition to nitrogen fixation, some nitrogen-fixing bacteria also dissolve insoluble mineral phosphates by producing organic acids [19,20]. A number of diazotrophic bacteria such as Pseudomonas, Burkholderia, Agrobacterium, Azotobacter and Ervinia are able to increase absorbable phosphorus and bio-stabilize nitrogen.…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Enriched Vermicomposts, Humic Acid Extract and Indole-3-Acetic Acid Amendments on the Growth of Brassica napus

Hemati

Alikhani

Ajdanian

et al. 2022

Plants

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Humic acid (HA) is a specific and stable component of humus materials that behaves similarly to growth stimulants, esp. auxin hormones, contributing to improving growth indices and performance of plants. As a rich source of HA, vermicompost (VC) is also a plant growth stimulating bio-fertilizer that can enhance growth indices and performance in plants. The purpose of the present study is to compare the influence of VC enriched with bacterial and/or fertilizer, commercial humic acid (CHA) extract, and indole-3-acetic acid (IAA) on improving growth characteristics and performance of rapeseed under greenhouse conditions. The results showed the complete superiority of VC over the CHA and IAA (approximately 8% increase in the dry weights of root and aerial organ and nearly three times increase in seed weight). The highest values of these indices were obtained with VC enriched with Nitrogen, Sulfur, and Phosphorus, Azotobacter chroococcum and Pseudomonas fluorescens; the lowest value was obtained with VC enriched with urea. Additionally, the application of 3% VC and the control involved the highest and lowest values in all traits, respectively. The SPAD (chlorophyll index) value and stem diameter were not significantly affected by different application levels of VC. Overall, the applications of IAA and the CHA were not found to be suitable and therefore not recommended.

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“…Compared to the control group, the use of this strain led to a reduction in reactive oxygen species and an increase in antioxidant enzyme activity ( Ghavami et al, 2017 ). In their study, Song et al (2021) showed that inoculation with Azotobacter chroococcum promotes plant nutrient uptake and improves maize crop yield without negatively impacting soil stability. In their work, Marulanda et al (2010) observed that inoculation of Bacillus megaterium into maize roots enhanced the ability of roots to absorb water in the presence of saline conditions.…”

Section: Plant Growth-promoting Rhizobacteria (Pgpr)mentioning

confidence: 99%

Promoting sustainable agriculture by exploiting plant growth-promoting rhizobacteria (PGPR) to improve maize and cowpea crops

Agbodjato,

Babalola

2024

PeerJ

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Maize and cowpea are among the staple foods most consumed by most of the African population, and are of significant importance in food security, crop diversification, biodiversity preservation, and livelihoods. In order to satisfy the growing demand for agricultural products, fertilizers and pesticides have been extensively used to increase yields and protect plants against pathogens. However, the excessive use of these chemicals has harmful consequences on the environment and also on public health. These include soil acidification, loss of biodiversity, groundwater pollution, reduced soil fertility, contamination of crops by heavy metals, etc. Therefore, essential to find alternatives to promote sustainable agriculture and ensure the food and well-being of the people. Among these alternatives, agricultural techniques that offer sustainable, environmentally friendly solutions that reduce or eliminate the excessive use of agricultural inputs are increasingly attracting the attention of researchers. One such alternative is the use of beneficial soil microorganisms such as plant growth-promoting rhizobacteria (PGPR). PGPR provides a variety of ecological services and can play an essential role as crop yield enhancers and biological control agents. They can promote root development in plants, increasing their capacity to absorb water and nutrients from the soil, increase stress tolerance, reduce disease and promote root development. Previous research has highlighted the benefits of using PGPRs to increase agricultural productivity. A thorough understanding of the mechanisms of action of PGPRs and their exploitation as biofertilizers would present a promising prospect for increasing agricultural production, particularly in maize and cowpea, and for ensuring sustainable and prosperous agriculture, while contributing to food security and reducing the impact of chemical fertilizers and pesticides on the environment. Looking ahead, PGPR research should continue to deepen our understanding of these microorganisms and their impact on crops, with a view to constantly improving sustainable agricultural practices. On the other hand, farmers and agricultural industry players need to be made aware of the benefits of PGPRs and encouraged to adopt them to promote sustainable agricultural practices.

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Evaluating the Impacts of Azotobacter chroococcum Inoculation on Soil Stability and Plant Property of Maize Crop

Cited by 15 publications

References 27 publications

Biofertilizers: An ecofriendly technology for nutrient recycling and environmental sustainability

Biofertilizers: An ecofriendly technology for nutrient recycling and environmental sustainability

Effect of Different Enriched Vermicomposts, Humic Acid Extract and Indole-3-Acetic Acid Amendments on the Growth of Brassica napus

Promoting sustainable agriculture by exploiting plant growth-promoting rhizobacteria (PGPR) to improve maize and cowpea crops

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