Impact of inoculation with local effective microorganisms on soil nitrogen cycling and legume productivity using composted broiler litter

Ney, Laura; Franklin, Dorcas H.; Mahmud, Kishan; Cabrera, M. L.; Hancock, Dennis W.; Habteselassie, Mussie Y.; Newcomer, Quint; Dahal, Subash

doi:10.1016/j.apsoil.2020.103567

Cited by 20 publications

(13 citation statements)

References 31 publications

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“…Most studies of PGPMs are based on interactions of single microorganisms with plants, evaluating different parameters of growth and plant health, such as length or weight of the plant or its individual tissues, chlorophyll content, or the nutritional content of its tissues or fruits [18,[20][21][22]. This has led to a better understanding of plant-microbe interactions, but leaves aside the "real" factor of these interactions in the environment, where a multiplicity of microbial species can exist.…”

Section: Plant-growth-promoting Microorganismsmentioning

confidence: 99%

Plant Growth Stimulation by Microbial Consortia

et al. 2021

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Plant-associated microorganisms play an important role in agricultural production. Although various studies have shown that single microorganisms can exert beneficial effects on plants, it is increasingly evident that when a microbial consortium—two or more interacting microorganisms—is involved, additive or synergistic results can be expected. This occurs, in part, due to the fact that multiple species can perform a variety of tasks in an ecosystem like the rhizosphere. Therefore, the beneficial mechanisms of plant growth stimulation (i.e., enhanced nutrient availability, phytohormone modulation, biocontrol, biotic and abiotic stress tolerance) exerted by different microbial players within the rhizosphere, such as plant-growth-promoting bacteria (PGPB) and fungi (such as Trichoderma and Mycorrhizae), are reviewed. In addition, their interaction and beneficial activity are highlighted when they act as part of a consortium, mainly as mixtures of different species of PGPB, PGPB–Mycorrhizae, and PGPB–Trichoderma, under normal and diverse stress conditions. Finally, we propose the expansion of the use of different microbial consortia, as well as an increase in research on different mixtures of microorganisms that facilitate the best and most consistent results in the field.

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Section: Plant-growth-promoting Microorganismsmentioning

confidence: 99%

Plant Growth Stimulation by Microbial Consortia

et al. 2021

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“…For instance, the clay rather than sandy soil may have a more binding capacity for organic and inorganic compounds, which may limit mineralization. Moreover, an unpredictable nature of nutrient mineralization may also cause growers to overuse N fertilizers, which may lead to alteration in N mineralization and losses in soils under CC [227][228][229][230]. For instance, under a continuous corn cropping, the use of NH + 4 -N fertilizer suppressed the mineralization (i.e., 13-21% reduction in gross ammonification) of organic matter [231], thus liming nutrient cycling and affecting soil fertility.…”

Section: Mineralization and Cycling Of C And Nmentioning

confidence: 99%

Continuous Cropping Alters Multiple Biotic and Abiotic Indicators of Soil Health

et al. 2020

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The continuous cropping (CC) of major agricultural, horticultural, and industrial crops is an established practice worldwide, though it has significant soil health-related concerns. However, a combined review of the effects of CC on soil health indicators, in particular omics ones, remains missing. The CC may negatively impact multiple biotic and abiotic indicators of soil health, fertility, and crop yield. It could potentially alter the soil biotic indicators, which include but are not limited to the composition, abundance, diversity, and functioning of soil micro- and macro-organisms, microbial networks, enzyme activities, and soil food web interactions. Moreover, it could also alter various soil abiotic (physicochemical) properties. For instance, it could increase the accumulation of toxic metabolites, salts, and acids, reduce soil aggregation and alter the composition of soil aggregate-size classes, decrease mineralization, soil organic matter, active carbon, and nutrient contents. All these alterations could accelerate soil degradation. Meanwhile, there is still a great need to develop quantitative ranges in soil health indicators to mechanistically predict the impact of CC on soil health and crop yield gaps. Following ecological principles, we strongly highlight the significance of inter-, mixture-, and rotation-cropping with cover crops to sustain soil health and agricultural production.

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“…It has been reported that EM agent could increase the diversity of soil microbes and control soil diseases, thus contributing to crop growth [ 22 , 23 ]. Laura et al revealed that combining EM agents and compost could enhance the resistance of soil food webs to drought stress even while improving nitrogen mineralization from compost manure [ 24 ]. Notably, the successful performance of EM agent depends on appropriate formulation techniques and ingredients (nutrients, adhesives) for improving its durability and reliability [ 25 ].…”

Section: Introductionmentioning

confidence: 99%

Response of soil microbiome structure and its network profiles to four soil amendments in monocropping strawberry greenhouse

et al. 2021

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With the constant surge of strawberry cultivation and human demand, widespread concern has been expressed about the severe soil and plant health problems caused by continuous strawberry cropping, particularly monocropping in greenhouses. Effective microorganisms (EM) and Bacillus subtilis (BS) have been extensively commercialized as biological control agents (BCAs) to promote plant growth and yield enhancement. However, their effects on soil microbes are obscure. To regulate the microbial community in continuous cropping strawberry soils, we developed four soil amendments based on these two BCAs by adding low and high contents of compost. The amplicon sequencing of bacterial and fungal ribosomal markers was applied to study the response of the soil microbiome structure. We noticed a sharp increase in bacterial diversity after adding EM-treated high compost and BS-treated low compost, while there was no significant change in fungal diversity among treatments. Through taxonomic classification and FUNGuild analysis, we found that the application of soil amendments resulted in a significant decline in the relative abundance of fungal plant pathogens (Rhizopus, Penicillium and Fusarium) in the soils; accordingly, the metabolic functions of a range of detrimental fungi were inhibited. Correlation analysis indicated that soil microbial community was indirectly driven by soil physicochemical properties. Co-occurrence networks revealed that soil amendments contributed to the connectivity of bacterial network, and EM-treated with high compost was the most complex and balanced. Collectively, EM-treated high compost and BS-treated low compost can well regulate the microbial community structure and thus maintain soil health.

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Impact of inoculation with local effective microorganisms on soil nitrogen cycling and legume productivity using composted broiler litter

Cited by 20 publications

References 31 publications

Plant Growth Stimulation by Microbial Consortia

Plant Growth Stimulation by Microbial Consortia

Continuous Cropping Alters Multiple Biotic and Abiotic Indicators of Soil Health

Response of soil microbiome structure and its network profiles to four soil amendments in monocropping strawberry greenhouse

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