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. 2023 Jun 30;11(7):1721.
doi: 10.3390/microorganisms11071721.

The Combined Applications of Microbial Inoculants and Organic Fertilizer Improve Plant Growth under Unfavorable Soil Conditions

Malek Al Methyeb  1 , Silke Ruppel  2 , Bettina Eichler-Löbermann  1 , Nikolay Vassilev  3
Affiliations

The Combined Applications of Microbial Inoculants and Organic Fertilizer Improve Plant Growth under Unfavorable Soil Conditions

Malek Al Methyeb et al. Microorganisms. .

Abstract

The performance of two bio-inoculants either in single or in combined applications with organic fertilizer was tested to determine their effect on plant growth and yield under normal and unfavorable field conditions such as low pH value and low content of P. Arbuscular Mycorrhiza Fungi (AMF; three species of Glomus) and the plant-growth-promoting bacterial strain Kosakonia radicincitans DSM16656 were applied to barley in a two-year field experiment with different soil pH levels and available nutrients. Grain yield; contents of P, N, K, and Mg; and soil microbial parameters were measured. Grain yield and the content of nutrients were significantly increased by the applications of mineral fertilizer, organic fertilizer, AMF, and K. radicincitans, and the combined application of organic fertilizer with AMF and with K. radicincitans over the control under normal growth conditions. Under low-pH and low-P conditions, only the combined application of the organic fertilizer with K. radicincitans and organic fertilizer with AMF could increase the grain yield and content of nutrients of barley over the control.

Keywords: Kosakonia radicincitans; arbuscular mycorrhizal fungi; field experiment; microbial inoculants; organic fertilizer; soil conditions; soil pH; yield.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
The effect of the single and the combined applications on barely grain yield (g m−2) in the first field experiment (experiment 1) in 2017 and the second field experiment (experiment 2) in 2018; Ctrl (control without any application), mineral fertilization (MF), organic fertilization (OF), arbuscular mycorrhiza fungi (AMF), and K. radicincitans (KR); bar graphs with different letters are significantly different according to Tukey’s test at p ≤ 0.05.
See this image and copyright information in PMC

References

    1. Araújo A., Leite L., Iwata B., Lira Junior M., Xavier G., Figueiredo M. Microbiological process in agroforestry systems. A review. Agron. Sustain. Dev. 2012;32:215–226. doi: 10.1007/s13593-011-0026-0. - DOI
    1. Vassileva M., Flor-Peregrin E., Malusa E., Vassilev N. Towards Better Understanding of the Interactions and Efficient Application of Plant Beneficial Prebiotics, Probiotics, Postbiotics and Synbiotics. Front. Plant Sci. 2020;11:1068. doi: 10.3389/fpls.2020.01068. - DOI - PMC - PubMed
    1. Clark C., Zeto S., Zobel R. Arbuscular mycorrhizal fungal isolate effectiveness on growth and root colonization of Panicum virgatum in acidic soil. Soil Biol. Biochem. 1999;31:1757–1763. doi: 10.1016/S0038-0717(99)00084-X. - DOI
    1. Haug A. Molecular aspects of aluminum toxicity. CRC Crit. Rev. Plant Sci. 1983;1:345–373. doi: 10.1080/07352688409382184. - DOI
    1. Eswaran H., Reich P., Beinroth F. Global distribution of soils with acidity. In: Moniz A.C., Furlan A.M.C., Schaffert R.E., Fageria N.K., Rosolem C.A., Cantarella H., editors. Plant-Soil Interactions at Low pH. Brazilian Soil Science Society; 1997. pp. 159–164.

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