Investigating the effect of humic acid and mycorrhizae on some traits of medicinal plant (Hibiscus sabdariffa) in the Sistan region

Document Type : Research paper

Author

Associate Professor, Dept. of Agriculture, Faculty of Engineering, Islamic Azad University, Zahedan Branch, Zahedan, Iran

Abstract

To investigate the effect of humic acid and mycorrhiza on the yield and essential oil content of the sour tea medicinal plant in the Sistan region in the year 1400, a factorial experiment was conducted using a randomized complete block design with three replications. The study included three levels of mycorrhizal inoculation: M1 (no inoculation), M2 (inoculation with G. mossea strain), and M3 (inoculation with G. etunicatum strain) as the first factor. The second factor was the foliar application of humic acid at different intervals: once a week (S1), once every two weeks (S2), once every three weeks (S3), and once every four weeks (S4). The results demonstrated that mycorrhiza significantly influenced plant dry weight, biological yield, fresh weight of corolla, fresh weight of sepals, dry weight of sepals per plant, and essential oil percentage. Remarkably, G. mossea demonstrated the highest biological yield of dry weight of sepals per plant at 31.39 grams and an essential oil percentage of 48.79%. In contrast, the control group recorded the lowest values, with a dry weight of sepals at 29.26 grams and an essential oil percentage of 46.35%. Consequently, it is concluded that humic acid can substantially enhance the quantitative and qualitative yield of sour tea in the study area and similar regions.

Keywords

References

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Advanced Research in Medicinal Plants
Volume 2, Issue 2 - Serial Number 3
September 2023
Pages 33-43

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History

  • Receive Date: 30 October 2023
  • Revise Date: 15 May 2024
  • Accept Date: 08 June 2024

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