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Biochar innovations for sustainable agriculture: Acidification and zinc enrichment strategies to improve calcareous soil fertility and wheat yield

Author

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  • Salih Demirkaya

    (Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Ondokuz Mayis University, Samsun, Türkiye)

  • Coskun Gülser

    (Department of Soil Science and Plant Nutrition, Faculty of Agriculture, Ondokuz Mayis University, Samsun, Türkiye)

Abstract

Calcareous soils, typically characterized by low fertility, low organic matter and nitrogen content, and often deficient in phosphorus, zinc, and iron, as well as having low microbial activity, require the development of sustainable soil conditioners to improve fertility. To address these shortcomings and promote sustainable agriculture, biochar, especially with acidic character, may offer a promising solution. This study investigates the effects of modified biochar by H2SO4 and ZnSO4 on soil properties and wheat yield under field conditions. For this purpose, biochar (B), acidified biochar (AB), Zn enriched biochar (BZn), and acidified-Zn enriched biochar (ABZn) were applied to the field at two different doses (0.5 and 1.0%) together with the control treatment (Ck) without biochar application. AB1.0% was determined as the most effective treatment in decreasing soil pH (0.15 units), while B1.0% was determined as the most effective treatment in increasing organic carbon and cation exchange capacity, 13% and 32%, respectively. The effect of the treatments varied for specific nutrients. The highest antioxidant enzyme activities were found in acidified biochars where the lowest yields were obtained. Compared to the Ck, the highest catalase (CAT) (32%) was determined in ABZn1.0%, ascorbate peroxidase (APX) (56%) and glutathione peroxidase (GPX) (36%) were determined in ABZn0.5%, and superoxide dismutase (SOD) (28%) was determined in AB0.5%. The highest proline (PRO), with the least decrease in yield, was found in the AB1.0% application, which is 205% more than Ck. B and BZn treatments all increased the grain yield, and the highest increase was 20% in B1.0% when compared to the Ck.

Suggested Citation

  • Salih Demirkaya & Coskun Gülser, . "Biochar innovations for sustainable agriculture: Acidification and zinc enrichment strategies to improve calcareous soil fertility and wheat yield," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 0.
    • Handle: RePEc:caa:jnlswr:v:preprint:id:77-2024-swr
    DOI: 10.17221/77/2024-SWR
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    References listed on IDEAS

    as
    1. Mahmoud El-Sharkawy & Ahmed H. El-Naggar & Arwa Abdulkreem AL-Huqail & Adel M. Ghoneim, 2022. "Acid-Modified Biochar Impacts on Soil Properties and Biochemical Characteristics of Crops Grown in Saline-Sodic Soils," Sustainability, MDPI, vol. 14(13), pages 1-21, July.
    2. Chen, Mei & Wang, Fang & Zhang, De-li & Yi, Wei-ming & Liu, Yi, 2021. "Effects of acid modification on the structure and adsorption NH4+-N properties of biochar," Renewable Energy, Elsevier, vol. 169(C), pages 1343-1350.
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