Skip to main content
Log in

Environmental variables controlling biological nitrogen fixation in soybean

  • Original Papers
  • Published:
Symbiosis Aims and scope Submit manuscript

Abstract

The effect of environmental factors on the proportion of the nitrogen (N) derived from the atmosphere (Ndfa) in soybean [Glycine max (L.) Merril] have been traditionally approached individually given their intrinsic complexity. Alternatively, a more in-depth investigation of such complex interactions can be pursued by delimiting environments where Ndfa is uniform. Thus, the aim of this study was to define environments on 24 sites by extensively characterizing weather, plant, and Ndfa-related traits to find discriminant variables defining three Ndfa classes (low, medium, and high). The Ndfa was determined at the beginning of the seed filling (R5 growth stage) using the 15N natural abundance method. Twenty environmental variables were utilized to categorize Ndfa in low (< 57%), medium (57–66%), and high (≥ 66%) classes via implementation of discriminant multivariate analysis. The Ndfa averaged 60%, lower to previous values reported for Brazil (ranging from 69 to 94%). Mean air temperature, associated to SOM and soil N, was the most important variable related to low Ndfa, while improving soil fertility (soil pH, base saturation, exchangeable Ca and Mg, and available P) was critical for high Ndfa and, consequently, seed yield. The high contribution of those factors highlight the importance of implementing strategies to improve soil fertility, to promote better plant growth, and thus enhancing Ndfa contribution to crop N uptake.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2

Similar content being viewed by others

References

Download references

Acknowledgements

The authors thank the staff of the Fundação Agrária de Pesquisa Agropecuária, whose help and support at field activities were essential.

Funding

This study was supported by Coordination for the Improvement of Personnel in Higher Education (CAPES), National Council for Scientific and Technological Development (CNPq) (207113/2017–3), and Kansas State Research and Extension (19–789).

Author information

Authors and Affiliations

Authors

Corresponding authors

Correspondence to Vítor Gabriel Ambrosini, Ignacio A. Ciampitti or Cimélio Bayer.

Ethics declarations

Conflict of interest

The authors declare that they have no conflict of interest.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (DOCX 24.9 kb)

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Ambrosini, V.G., Ciampitti, I.A., Fontoura, S.M.V. et al. Environmental variables controlling biological nitrogen fixation in soybean. Symbiosis (2024). https://doi.org/10.1007/s13199-024-00988-2

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s13199-024-00988-2

Keywords

Navigation