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<p>Over the past 20 years, the usage of nanomaterials for agricultural production and quality enhancement has increased dramatically. Silicon is one such micronutrient that positively influences plant growth and improves their quality. This research assessed the impact of SiO<sub>2</sub> nanoparticles on plant growth, photosynthetic pigments, secondary metabolites, and soil enzymes through a two-year pot experiment. The Si-NPs were synthesized using rice husk and characterized with XRD, FTIR, and SEM. Maize plants were studied in six setups with different concentrations of Si-NPs (S1 = 100, S2 = 200, S3 = 300, S4 = 400, and S5 = 500 mg L<sup>− 1</sup>) and a control. Foliar application of 500 mg L<sup>− 1</sup> Si-NP significantly (<i>p</i> &lt; 0.05) enhanced all morphological and biochemical traits. S5 showed the best results with increases in shoot length (12%), root length (67%), fresh plant weight (shoot-20%; root-50%), dry plant weight (shoot-71%; root-92%), number of leaves (65.1%), leaf area index (72.5%), photosynthetic pigments (chl a-56.7%; chl b-123.5%; carotenoids-71%), phenolic content (135%), proline (27%), protein (51.8%), alkaline phosphatase (8.5%), and dehydrogenase activity (134.91%) as compared to the control setup. The findings of our study confirm the effectiveness of Si-NPs as a growth promoter in maize plants to improve their quality and soil health.</p>

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Foliar Application of Biogenically Synthesized Silica Nanoparticles Improves Growth, Photosynthetic Pigments, and Soil Enzymatic Activities in Maize (Zea mays) Plants

  • 期刊论文

  • 发表日期：

    2026年2月10日

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  • Divya Siwach,
  • Anu Gupta

摘要

Over the past 20 years, the usage of nanomaterials for agricultural production and quality enhancement has increased dramatically. Silicon is one such micronutrient that positively influences plant growth and improves their quality. This research assessed the impact of SiO2 nanoparticles on plant growth, photosynthetic pigments, secondary metabolites, and soil enzymes through a two-year pot experiment. The Si-NPs were synthesized using rice husk and characterized with XRD, FTIR, and SEM. Maize plants were studied in six setups with different concentrations of Si-NPs (S1 = 100, S2 = 200, S3 = 300, S4 = 400, and S5 = 500 mg L− 1) and a control. Foliar application of 500 mg L− 1 Si-NP significantly (p < 0.05) enhanced all morphological and biochemical traits. S5 showed the best results with increases in shoot length (12%), root length (67%), fresh plant weight (shoot-20%; root-50%), dry plant weight (shoot-71%; root-92%), number of leaves (65.1%), leaf area index (72.5%), photosynthetic pigments (chl a-56.7%; chl b-123.5%; carotenoids-71%), phenolic content (135%), proline (27%), protein (51.8%), alkaline phosphatase (8.5%), and dehydrogenase activity (134.91%) as compared to the control setup. The findings of our study confirm the effectiveness of Si-NPs as a growth promoter in maize plants to improve their quality and soil health.