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<p>Seaweed extracts derived from marine algae are an abundant source of bioactive compounds, encompassing phytohormones, phenolic and flavonoid compounds, and nutrients. This study investigated the benefits of seaweed extract obtained from the red algae&#xa0;<i>Solieria chordalis</i> (SCE), through a field experiment (2021–22 &amp; 2022–23) involving foliar application of extract at different concentrations in combination with recommended doses of chemical fertilizers for patchouli (<i>Pogostemon cablin</i> (Blanco) Benth.), an industrially important aromatic crop. Pooled analysis of the results over two experimental seasons revealed that the application of the recommended dose of fertilizer (RDF) + 7.5% SCE significantly improved the dry herbage yield and oil yield by 23.6% and 37.6%, respectively, over RDF alone. The yield obtained due to the application of 7.5% SCE was significant over lower concentrations such as 2.5% and 5% SCE. The essential oil recovery percentage did not vary significantly, ranging from 2.80 to 2.91%. The impact of SCE on essential oil composition was non-significant. A predominant set of 14 major compounds shared 90.01 to 97.72% of the total components of essential oil. The marker compound, patchouli alcohol ranged between 44.40% to 49.70%. Essential oil analysis revealed that α-patchoulene, γ-patchoulene, α -guaiene, and α-bulnesene were the other major compounds of the essential oil. Conclusively, the foliar application of SCE at 7.5% with RDF was the optimal concentration for enhancing the leaf-to-stem ratio, productivity, and essential oil yield of patchouli.</p>

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Seaweed extract of Solieria chordalis (C.Agardh) J. Agardh) improves growth, yield and essential oil production and economics of Patchouli (Pogostemon cablin (Blanco) Benth.)

  • 期刊论文

  • 发表日期：

    2025年5月19日

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  • K. M. Prakhyath,
  • N. D. Yogendra,
  • R. C. Padalia,
  • K. G. Vijay Anand,
  • V. Veeragurunathan,
  • Kamalesh Prasad,
  • Arup Ghosh

摘要

Seaweed extracts derived from marine algae are an abundant source of bioactive compounds, encompassing phytohormones, phenolic and flavonoid compounds, and nutrients. This study investigated the benefits of seaweed extract obtained from the red algae Solieria chordalis (SCE), through a field experiment (2021–22 & 2022–23) involving foliar application of extract at different concentrations in combination with recommended doses of chemical fertilizers for patchouli (Pogostemon cablin (Blanco) Benth.), an industrially important aromatic crop. Pooled analysis of the results over two experimental seasons revealed that the application of the recommended dose of fertilizer (RDF) + 7.5% SCE significantly improved the dry herbage yield and oil yield by 23.6% and 37.6%, respectively, over RDF alone. The yield obtained due to the application of 7.5% SCE was significant over lower concentrations such as 2.5% and 5% SCE. The essential oil recovery percentage did not vary significantly, ranging from 2.80 to 2.91%. The impact of SCE on essential oil composition was non-significant. A predominant set of 14 major compounds shared 90.01 to 97.72% of the total components of essential oil. The marker compound, patchouli alcohol ranged between 44.40% to 49.70%. Essential oil analysis revealed that α-patchoulene, γ-patchoulene, α -guaiene, and α-bulnesene were the other major compounds of the essential oil. Conclusively, the foliar application of SCE at 7.5% with RDF was the optimal concentration for enhancing the leaf-to-stem ratio, productivity, and essential oil yield of patchouli.