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<p>Silicon plays a pivotal role in plant nutrition across a wide range of crops; however, its influence on medicinal and aromatic plants remains inadequately explored. Hence, a field investigation was carried out at CSIR-CIMAP, Bengaluru, during 2022–23 and 2023–24 to identify the optimum foliar silicon concentration for enhancing productivity and essential oil quality of <i>Artemisia pallens</i>. The experiment was laid out in a randomized complete block design with seven treatments comprising control, recommended dose of fertilizers (RDF), and RDF combined with 1–5% silicon sprays. Pooled data revealed that foliar application of 4% silicon recorded significantly higher fresh (17.75 t ha⁻<sup>1</sup>) and dry (7.77 t ha⁻<sup>1</sup>) herbage yields with a corresponding essential oil yield (26.50&#xa0;kg&#xa0;ha⁻<sup>1</sup>) compared to RDF and control. This improvement was supported by superior growth and yield attributes such as plant height, number of branches, stem girth, and flower diameter under silicon treatment. Correlation analysis of essential oil constituents revealed distinct biosynthetic linkages, with cis-davanone dominating the composition. Economic analysis indicated that 4% silicon generated the highest gross income (US$ 6,114.92&#xa0;ha⁻<sup>1</sup>), net income (US$ 4,388.28&#xa0;ha⁻<sup>1</sup>), and benefit–cost ratio (&gt; 2.5). Furthermore, efficiency indices, including production efficiency and economic efficiency, established 4% silicon as an effective and sustainable strategy for improving growth, yield, and essential oil biosynthesis in <i>A. pallens</i>.</p>

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Enhancing Growth, Yield, and Essential Oil Composition of Artemisia pallens Wall. ex DC Through Foliar Application of Silicon

  • 期刊论文

  • 发表日期：

    2026年6月2日

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  • K. M. Prakhyath,
  • N. D.Yogendra,
  • V. S. Pragadheesh,
  • N. B. Prakash

摘要

Silicon plays a pivotal role in plant nutrition across a wide range of crops; however, its influence on medicinal and aromatic plants remains inadequately explored. Hence, a field investigation was carried out at CSIR-CIMAP, Bengaluru, during 2022–23 and 2023–24 to identify the optimum foliar silicon concentration for enhancing productivity and essential oil quality of Artemisia pallens. The experiment was laid out in a randomized complete block design with seven treatments comprising control, recommended dose of fertilizers (RDF), and RDF combined with 1–5% silicon sprays. Pooled data revealed that foliar application of 4% silicon recorded significantly higher fresh (17.75 t ha⁻1) and dry (7.77 t ha⁻1) herbage yields with a corresponding essential oil yield (26.50 kg ha⁻1) compared to RDF and control. This improvement was supported by superior growth and yield attributes such as plant height, number of branches, stem girth, and flower diameter under silicon treatment. Correlation analysis of essential oil constituents revealed distinct biosynthetic linkages, with cis-davanone dominating the composition. Economic analysis indicated that 4% silicon generated the highest gross income (US$ 6,114.92 ha⁻1), net income (US$ 4,388.28 ha⁻1), and benefit–cost ratio (> 2.5). Furthermore, efficiency indices, including production efficiency and economic efficiency, established 4% silicon as an effective and sustainable strategy for improving growth, yield, and essential oil biosynthesis in A. pallens.