Microbial Inoculants as Biofertilizers and Biopesticides

Pathak, D. V.; Kumar, Mukesh

doi:10.1007/978-81-322-2647-5_11

Cited by 43 publications

(21 citation statements)

References 20 publications

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“…Examples are nitrogen fixers, phosphorus solubilizers, potassium solubilizers, sulfur solubilizers, and mycorrhiza, etc. ( Pathak and Kumar, 2016 ).…”

Section: Contribution Of Microbial Inoculant In Sustainable Maintenanmentioning

confidence: 99%

Microbial Inoculants for Improving Crop Quality and Human Health in Africa

2018

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Current agricultural practices depend heavily on chemical inputs (such as fertilizers, pesticides, herbicides, etc.) which, all things being equal cause a deleterious effect on the nutritional value of farm product and health of farm workers and consumers. Excessive and indiscriminate use of these chemicals have resulted in food contamination, weed and disease resistance and negative environmental outcomes which together have a significant impact on human health. Application of these chemical inputs promotes the accumulation of toxic compounds in soils. Chemical compounds are absorbed by most crops from soil. Several synthetic fertilizers contain acid radicals, such as hydrochloride and sulfuric radicals, and hence increase the soil acidity and adversely affect soil and plant health. Highly recalcitrant compounds can also be absorbed by some plants. Continuous consumption of such crops can lead to systematic disorders in humans. Quite a number of pesticides and herbicides have carcinogenicity potential. The increasing awareness of health challenges as a result of consumption of poor quality crops has led to a quest for new and improved technologies of improving both the quantity and quality of crop without jeopardizing human health. A reliable alternative to the use of chemical inputs is microbial inoculants that can act as biofertilizers, bioherbicide, biopesticides, and biocontrol agents. Microorganisms are able to carry out the plant growth promotion, pest and disease and weed control. Microbial inoculants are beneficiary microorganisms applied to either the soil or the plant in order to improve productivity and crop health. Microbial inoculants are natural-based products being widely used to control pests and improve the quality of the soil and crop, and hence human health. Microbial inoculants involve a blend of microorganisms that work with the soil and the soil life to improve soil fertility and health and by extension improve human health. Microbial inoculants have the ability to minimize the negative impact of chemical input and consequently increase the quantity and quality of farm produce. Microbial inoculants are environmental-friendly and deliver plant nutrients to plants in a more sustainable manner. Microbial inoculants can help reduce chemical fertilizer application. Microbial inoculants could include bacteria, fungi and algae. This research summarizes the impact of agricultural chemical inputs on human health. The contribution of microbial inoculants in sustainable maintenance of human health will be expatiated. Advances in microbial inoculants and technology and strategies to explore this natural, user friendly biological resource for sustainable maintenance of plant health will be discussed.

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“…Examples are nitrogen fixers, phosphorus solubilizers, potassium solubilizers, sulfur solubilizers, and mycorrhiza, etc. ( Pathak and Kumar, 2016 ).…”

Section: Contribution Of Microbial Inoculant In Sustainable Maintenanmentioning

confidence: 99%

Microbial Inoculants for Improving Crop Quality and Human Health in Africa

2018

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“…Different kind of soil microorganisms (especially bacteria and fungi) that exhibit PGP traits [generally identified as plant growth promoting microbes (PGPMs)] can be used for the production of efficient biofertilizers ( Vessey, 2003 ; Lucy et al, 2004 ; Smith and Read, 2008 ; Khalid et al, 2009 ). Generally, microbial-based bioformulation may be classified into four types: (1) NF bacteria, (2) P solubilizing/mobilizing microorganisms, (3) composting microorganisms, and (4) biopesticides ( Pathak and Kumar, 2016 ). Of note, in addition to their main function they are selected for, those microbial groups may all exhibit other PGP traits (i.e., phytohormones, siderophores, amino acids, and polysaccharides, etc.)…”

Section: Introductionmentioning

confidence: 99%

Soil Microbial Resources for Improving Fertilizers Efficiency in an Integrated Plant Nutrient Management System

et al. 2018

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Tomorrow’s agriculture, challenged by increasing global demand for food, scarcity of arable lands, and resources alongside multiple environment pressures, needs to be managed smartly through sustainable and eco-efficient approaches. Modern agriculture has to be more productive, sustainable, and environmentally friendly. While macronutrients such as nitrogen (N), phosphorus (P), potassium (K), and sulfur (S) supplied by mineral fertilizers are vital to crop production, agriculturally beneficial microorganisms may also contribute directly (i.e., biological N2 fixation, P solubilization, and phytohormone production, etc.) or indirectly (i.e., antimicrobial compounds biosynthesis and elicitation of induced systemic resistance, etc.) to crop improvement and fertilizers efficiency. Microbial-based bioformulations that increase plant performance are greatly needed, and in particular bioformulations that exhibit complementary and synergistic effects with mineral fertilization. Such an integrated soil fertility management strategy has been demonstrated through several controlled and non-controlled experiments, but more efforts have to be made in order to thoroughly understand the multiple functions of beneficial microorganisms within the soil microbial community itself and in interaction with plants and mineral resources. In fact, the combined usage of microbial [i.e., beneficial microorganisms: N2-fixing (NF), P-solubilizing, and P mobilizing, etc.] and mineral resources is an emerging research area that aims to design and develop efficient microbial formulations which are highly compatible with mineral inputs, with positive impacts on both crops and environment. This novel approach is likely to be of a global interest, especially in most N- and P-deficient agro-ecosystems. In this review, we report on the importance of NF bacteria and P solubilizing/mobilizing microbes as well as their interactions with mineral P fertilization in improving crop productivity and fertilizers efficiency. In addition, we shed light on the interactive and synergistic effects that may occur within multi-trophic interactions involving those two microbial groups and positive consequences on plant mineral uptake, crop productivity, and resiliency to environmental constraints. Improving use of mineral nutrients is a must to securing higher yield and productivity in a sustainable manner, therefore continuously designing, developing and testing innovative integrated plant nutrient management systems based on relevant biological resources (crops and microorganisms) is highly required.

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“…Many strains, some of which have interesting biotechnological potential have been isolated from the extensive research programs on plant-beneficial microorganisms (Sivasakthivelan and Saranraj, 2013;Umesha et al, 2018;Nafis et al, 2019). Nitrogen fixers, potassium and phosphorus solubilizers, or their combinations with molds fungi are the organisms commonly used as components of biofertilizers (Mohammadi and Sohrabi, 2012;Pathak and Kumar, 2016). Most of these microorganisms used as biological fertilizers are isolated from the plant rhizosphere where they establish close contact with the roots (Xiang et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

From Isolation of Phosphate Solubilizing Microbes to Their Formulation and Use as Biofertilizers: Status and Needs

Soumaré

Boubekri

Lyamlouli

et al. 2020

Front. Bioeng. Biotechnol.

130

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The production of biofertilizers at industrial level is a bottleneck because bacterial strains are generally developed and managed by research laboratories and not by production units. A seamless transition from laboratory to field application is, therefore necessary. This review provides an overview of the constraints that limiting the application or the implementation of Actinobacteria based biofertilizers especially in agricultural field and suggests solutions to overcome some of these limits. General processes of making and controlling the quality of the inoculum are briefly described. In addition, the paper underlines the opportunity of biofertilizers alone or in combination with chemical fertilizers. This review also, highlights the latest studies (until June 2019) and focuses on P-solubilization microorganisms mainly Actinobacteria. The biotechnology of these bacteria is a glimmer of hope for rock phosphate (RP) bioformulation. Since direct application of RP fertilizer is not always agronomically effective due to its sparse solubility.

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Microbial Inoculants as Biofertilizers and Biopesticides

Cited by 43 publications

References 20 publications

Microbial Inoculants for Improving Crop Quality and Human Health in Africa

Microbial Inoculants for Improving Crop Quality and Human Health in Africa

Soil Microbial Resources for Improving Fertilizers Efficiency in an Integrated Plant Nutrient Management System

From Isolation of Phosphate Solubilizing Microbes to Their Formulation and Use as Biofertilizers: Status and Needs

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