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Nutrition and yield of hydroponic arugula under inoculation of beneficial microorganisms

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Abstract

The use of beneficial fungi and bacteria can improve growth, yield and food quality of plants. The electrical conductivity (EC) of a nutrient solution is closely linked to better nutrition of arugula plants in a hydroponic system. Therefore, objectives of current study were to evaluate isolated and combined effect of inoculation with Azospirillum brasilense and Trichoderma hazianum under two ECs on root-shoot biomass, nutrition and yield of arugula in hydroponic cultivation system. The experiment was designed in a strip-plot block with five replications in a 4 × 2 factorial scheme. The treatments were consisted of four microbial inoculations (without, A. brasilense, T. harzianum and co-inoculation of both) and two ECs (1.4 and 1.6 dS m−1). The higher EC with A. brasilense inoculation provided greater growth of arugula plants in a hydroponic system. Inoculation with A. brasilense has increased leaf area, shoot–root length, leaf chlorophyll index (LCI) and shoot ammonium accumulation while reduced root-shoot nitrate accumulation. The leaf nutrition or biofortification of arugula plants with K, S, Ca, Mg, Zn, Fe, and Mn was improved under both isolated and combined inoculations of A. brasilense and T. harzianum.

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Acknowledgements

This research was funded by Fundação de Amparo à Pesquisa do Estado de São Paulo—FAPESP, Grant Number 2020/11621-0

Funding

This research ans second author was funded by Fundação de Amparo à Pesquisa do Estado de São Paulo—FAPESP, Grant Number 2020/11621-0.

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For research articles with several authors, a short paragraph specifying their individual contributions must be provided. The following statements should be used “Conceptualization, CESO and MCMTF; methodology, CESO, TJSSO and PFV; soft-ware, BHL and AJ; validation, CESO, IMBG, VMG, and LSV; formal analysis, VAM, and LSV; investigation, CESO and PFV; resources, PFV and MCMTF; data curation, CESO; writing—original draft preparation, CESO and AJ; writing—review and editing, MCMTF and PFV; visualization, IMBG and BHL; supervision, MCMTF and CESO; project administration, CESO and MCMTF; funding acquisition, PFV and MCMTF. All authors have read and agreed to the published version of the manuscript.” Please turn to the CRediT taxonomy for the term explanation. Authorship must be limited to those who have con-tributed substantially to the work reported.

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Correspondence to Carlos Eduardo da Silva Oliveira or Marcelo Carvalho Minhoto Teixeira Filho.

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The authors declare that they have no conflict of interest. This article does not contain any studies involving animals or human participants as objects of research.

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Communicated by Myung-Min Oh.

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Gato, I.M.B., da Silva Oliveira, C.E., Oliveira, T.J.S.S. et al. Nutrition and yield of hydroponic arugula under inoculation of beneficial microorganisms. Hortic. Environ. Biotechnol. 64, 193–208 (2023). https://doi.org/10.1007/s13580-022-00476-w

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  • DOI: https://doi.org/10.1007/s13580-022-00476-w

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