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<p>The study focused on analyzing the root physiological indices and growth-related parameters of tobacco plants.&#xa0;Three years of field research were carried out to investigate the impact of various levels of pristine and Fe-modified biochar application (500, 1000, 1500, 2000, and 2500 kg ha−1, as well as no fertilizer (control)) on the root system and growth attributes of flue-tobacco plants.&#xa0;The findings indicated that the root development of tobacco plants during the flourishing phase correlated with photosynthetic indices, levels of chlorophyll, and leaf area coefficients. The administration of Fe-modified biochar resulted in a 188.11% and 87.65% increase in root vitality compared to the control and pristine biochar. Fe-modified biochar enhanced root development, resulting in a 99.64% increase in the total root area and a 111.7% increase in root tip numbers. Furthermore, the application of Fe-modified biochar resulted in a significant 89.7% rise in net photosynthesis of leaves and a substantial 86.3% rise in the total biomass of tobacco plants.&#xa0;Research has demonstrated that Fe-modified biochar has the ability to stimulate the growth of tobacco roots and subsequently improve the photosynthetic activity of leaves, as well impacted the enzymatic activities and oxidative stress parameters. Fe-modified biochar influenced the nicotine amount of tobacco plants. The examined samples exhibited a range of 15.3-88.64% for the ratio of free nicotine to total nicotine, with an average of 45.7%.</p>

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Fe-Modified Biochar Improves Tobacco Productivity by Promoting Root Growth, Plant Biochemical Traits and Nicotine Level: A Three Years Field Study

  • 期刊论文

  • 发表日期：

    2025年2月11日

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  • Ghulam Murtaza,
  • Muhammad Usman,
  • Qamar uz Zaman,
  • Zeeshan Ahmed,
  • Mona S Alwahibi,
  • Humaira Rizwana,
  • Javed Iqbal,
  • Muhammad Qasim,
  • Rashid Iqbal,
  • Gang Deng

摘要

The study focused on analyzing the root physiological indices and growth-related parameters of tobacco plants. Three years of field research were carried out to investigate the impact of various levels of pristine and Fe-modified biochar application (500, 1000, 1500, 2000, and 2500 kg ha−1, as well as no fertilizer (control)) on the root system and growth attributes of flue-tobacco plants. The findings indicated that the root development of tobacco plants during the flourishing phase correlated with photosynthetic indices, levels of chlorophyll, and leaf area coefficients. The administration of Fe-modified biochar resulted in a 188.11% and 87.65% increase in root vitality compared to the control and pristine biochar. Fe-modified biochar enhanced root development, resulting in a 99.64% increase in the total root area and a 111.7% increase in root tip numbers. Furthermore, the application of Fe-modified biochar resulted in a significant 89.7% rise in net photosynthesis of leaves and a substantial 86.3% rise in the total biomass of tobacco plants. Research has demonstrated that Fe-modified biochar has the ability to stimulate the growth of tobacco roots and subsequently improve the photosynthetic activity of leaves, as well impacted the enzymatic activities and oxidative stress parameters. Fe-modified biochar influenced the nicotine amount of tobacco plants. The examined samples exhibited a range of 15.3-88.64% for the ratio of free nicotine to total nicotine, with an average of 45.7%.