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<p>Co-applications of copper oxide nanoparticles (CuO-NPs) and biochar have a wide potential to improve plant growth and yields as exposure of such amendments can alter plant physicochemical characteristics and yield attributes. We investigated the effect of different levels of CuO-NPs (0, 25, 50, 75 and 100&#xa0;mg&#xa0;kg<sup>−1</sup>) along with poultry litter biochar (PLB) on soil properties and plant growth in a greenhouse pot experiment by using maize as a test crop. Our results indicated that soil NO<sub>3</sub>-N (64.59%), NH<sub>4</sub>-N (122.17%), Olsen P (103%), K (94%) positively influenced by PLB + NP100 treatment, whilst, soil microbial biomass carbon (2.92), microbial biomass nitrogen (4.26), microbial biomass phosphorus (54.21), total phospholipid fatty acids (32.17), urease (13.29%), dehydrogenase (29.06%), phosphodiesterase (25.91%), protease (41.18%), invertase (15.91) β-glucosidase (17.31) increased under PLB + NP50 amendment. Meanwhile, maize leaf area index, cob length and grain yield also increased up to 23.20, 71.35 and 23.71% respectively under PLB + NP100 treatment. Moreover, combined application of PLB and NP100 remarkably enhanced leave chlorophyll a (39.52%), chlorophyll b (60.97%), photosynthetic rate (85.42%), stomatal conductance (31.32%) and transpiration rate (20.54) against control conditions. Meanwhile, membrane leakage attributes including electrolyte leakage, hydrogen peroxide and malondialdehyde significantly decreased in maize leaves and roots after the application of PLB or NPs either as sole or combine. Combined application of PLB and NP100 increased the activities of superoxidase dismutase (63.50 and 19%), peroxidase (20.64 and 17.98%) and ascorbate peroxidase (22.90 and 19.96) in leaves and roots of maize plant against control. We concluded that CuO-NPs along with PLB can be effectively utilized to enhance the soil biological health along with plant growth and yield.</p>

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Effect of Different Levels of Copper Oxide (CuO) Nanoparticles and Biochar on Soil’s Microbial Activities and Maize (Zea Mays L.) Growth

  • 期刊论文

  • 发表日期：

    2025年8月11日

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  • Muhammad Abdullah Aziz,
  • Sana Zahra,
  • Bilal Adil,
  • Amir Naserin,
  • Muhammad Asad Hameed,
  • Ijaz Ali,
  • Temoor Ahmed,
  • Ajaz Ahmad

摘要

Co-applications of copper oxide nanoparticles (CuO-NPs) and biochar have a wide potential to improve plant growth and yields as exposure of such amendments can alter plant physicochemical characteristics and yield attributes. We investigated the effect of different levels of CuO-NPs (0, 25, 50, 75 and 100 mg kg−1) along with poultry litter biochar (PLB) on soil properties and plant growth in a greenhouse pot experiment by using maize as a test crop. Our results indicated that soil NO3-N (64.59%), NH4-N (122.17%), Olsen P (103%), K (94%) positively influenced by PLB + NP100 treatment, whilst, soil microbial biomass carbon (2.92), microbial biomass nitrogen (4.26), microbial biomass phosphorus (54.21), total phospholipid fatty acids (32.17), urease (13.29%), dehydrogenase (29.06%), phosphodiesterase (25.91%), protease (41.18%), invertase (15.91) β-glucosidase (17.31) increased under PLB + NP50 amendment. Meanwhile, maize leaf area index, cob length and grain yield also increased up to 23.20, 71.35 and 23.71% respectively under PLB + NP100 treatment. Moreover, combined application of PLB and NP100 remarkably enhanced leave chlorophyll a (39.52%), chlorophyll b (60.97%), photosynthetic rate (85.42%), stomatal conductance (31.32%) and transpiration rate (20.54) against control conditions. Meanwhile, membrane leakage attributes including electrolyte leakage, hydrogen peroxide and malondialdehyde significantly decreased in maize leaves and roots after the application of PLB or NPs either as sole or combine. Combined application of PLB and NP100 increased the activities of superoxidase dismutase (63.50 and 19%), peroxidase (20.64 and 17.98%) and ascorbate peroxidase (22.90 and 19.96) in leaves and roots of maize plant against control. We concluded that CuO-NPs along with PLB can be effectively utilized to enhance the soil biological health along with plant growth and yield.