Skip to main content

Advertisement

Log in

Foliar Application of Humic Acids Improves Seed Yield and Oil Quality of Rapeseed (Brassica napus L.) Genotypes at Well-Time and Late Planting Dates

  • Original Paper
  • Published:
Journal of Soil Science and Plant Nutrition Aims and scope Submit manuscript

Abstract

Planting date plays an important role in maximizing the plant’s access to environmental factors. To introducing optimal planting times, farmers can also consider plant nutrition as a suitable management operation. Humic acid is a hormone-like compounds with a biological origin mainly obtained from organic waste materials. It can help promote the plant’s nutritional status and enhance crop performance. A factorial split-plot experiment based on randomized complete block design with three replications was conducted in 2017–2018 and 2018–2019. Main plots included two planting dates of well-time planting date (2-Oct) and delayed planting date (1-Nov) and humic acid foliar application at two levels of non-foliar application and foliar application of 1.5 g l−1 humic acid. Sub-plots contained ten rapeseed genotypes of WRL-95 -02, WRL-95–05, WRL-95–07, WRL-95–08, WRL-95–11, WRL-95–12, WRL-95–33, Falstaff, Claremore, and SLM046. The results revealed that the seed yield, silique per plant, seeds per silique, and thousand-seed weight of rapeseed genotypes decreased by 47, 37, 47, and 38% on the delayed planting date (1-Nov) compared with the well-time planting date (2-Oct). The oil content, oil yield, and oil quality of genotypes grown on the delayed planting date (1-Nov) were reduced compared with the well-time planting date (2-Oct). A remarkable increase was observed in seed yield and yield components when genotypes were treated with the humic acid at both planting dates. Furthermore, the oil quality was improved by enhancing oleic acid and linoleic acid contents and reducing erucic acid and glucosinolate contents at the two study planting dates. In general, this study recommends that the high quantity and quality of oil can be achieved in rapeseed agroecosystems when genotypes are treated with the humic acid on a well-time planting date.

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 gratefully acknowledge the support provided for this survey by the Seed and Plant Improvement Institute (SPII), Karaj, Iran. Authors are thankful to the Editor-in-Chief and reviewers for their constructive suggestions and comments.

Funding

The authors did not receive support from any organization for the submitted work.

Author information

Authors and Affiliations

Authors

Contributions

Shirin Alizadeh: Project administration, field practices. Arash Roozbahani: Conceptualization, methodology. Amir Hosein Shirani Rad: Conceptualization, methodology, writing–original draft preparation. Mohamadreza Haj Seyedhadi: Investigation, software, formal analysis.

Corresponding author

Correspondence to Amir Hosein Shirani Rad.

Ethics declarations

Conflict of Interest

The authors declare no competing interests.

Additional information

Publisher's Note

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

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Alizadeh, S., Roozbahani, A., Rad, A.H.S. et al. Foliar Application of Humic Acids Improves Seed Yield and Oil Quality of Rapeseed (Brassica napus L.) Genotypes at Well-Time and Late Planting Dates. J Soil Sci Plant Nutr 22, 549–559 (2022). https://doi.org/10.1007/s42729-021-00670-2

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s42729-021-00670-2

Keywords

Navigation