Comparative and synergistic impacts of lime and biochar on soil properties, nitrogen transformation, and microbial function in acidic soils under tobacco cropping
IntroductionLime and biochar are widely utilized to enhance nitrogen utilization in crops grown on acidic soils, though each has its own set of limitations. Understanding their combined effects is crucial for optimizing soil remediation strategies.MethodsThis study investigates the impact of lime an...
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Frontiers Media S.A.
2025-02-01
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| author | Bianhong Zhang Lina Tang Zhicheng Chen Xiaoyan Chen Lindong You Ruixin Pan Ting Chen Yifei Liu Wenxiong Lin Wenxiong Lin Jinwen Huang |
| author_facet | Bianhong Zhang Lina Tang Zhicheng Chen Xiaoyan Chen Lindong You Ruixin Pan Ting Chen Yifei Liu Wenxiong Lin Wenxiong Lin Jinwen Huang |
| author_sort | Bianhong Zhang |
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| description | IntroductionLime and biochar are widely utilized to enhance nitrogen utilization in crops grown on acidic soils, though each has its own set of limitations. Understanding their combined effects is crucial for optimizing soil remediation strategies.MethodsThis study investigates the impact of lime and biochar on nitrogen utilization efficiency (NUE) in a tobacco monoculture system, which has been practiced for 20 years on acidified soils in Fuzhou, southeastern China, over the period from 2021 to 2022. Four treatments were applied: control (CK), lime alone (L), biochar alone (B), and a lime-biochar combination (L+B).ResultsThe results indicated that all treatments significantly improved NUE, with increases ranging from 20.07% to 27.17% compared to CK. Biochar (B) was more effective than lime (L), and the combined treatment (L+B) showed comparable effects to biochar alone. Correlation analysis revealed that increases in soil pH and exchangeable base cations facilitated nitrogen transformation, thereby enhancing NUE. Lime treatments (L, L+B) promoted nitrification potential in rhizosphere soil, whereas biochar application (B, L+B) resulted in elevated nitrate nitrogen content. Microbial functional analysis indicated that lime (L, L+B) enhanced nitrification, while biochar (B, L+B) fostered dissimilatory nitrate reduction, thereby improving nitrogen retention. Pearson correlation analysis demonstrated a strong positive relationship between dissimilatory nitrate reduction and both soil alkali-hydrolyzable nitrogen and nitrate nitrogen contents.ConclusionThese findings suggest that lime enhances nitrification, while biochar promotes nitrate retention, together increasing soil nitrogen availability. The combined application of lime and biochar integrates these benefits, yielding results comparable to biochar alone. This study offers valuable insights into the synergistic use of lime and biochar for mitigating soil acidification and optimizing nitrogen management in agricultural systems. |
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| institution | Kabale University |
| issn | 1664-462X |
| language | English |
| publishDate | 2025-02-01 |
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| series | Frontiers in Plant Science |
| spelling | doaj-art-fd2d0e845fc848b39c94198158f4b95b2025-02-07T06:49:58ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2025-02-011610.3389/fpls.2025.15301281530128Comparative and synergistic impacts of lime and biochar on soil properties, nitrogen transformation, and microbial function in acidic soils under tobacco croppingBianhong Zhang0Lina Tang1Zhicheng Chen2Xiaoyan Chen3Lindong You4Ruixin Pan5Ting Chen6Yifei Liu7Wenxiong Lin8Wenxiong Lin9Jinwen Huang10Key Laboratory for Genetics Breeding and Multiple Utilization of Crops, Ministry of Education/College of Agriculture, Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Agriculture and Forestry University, Fuzhou, Fujian, ChinaThe Soil and Fertilization Research Laboratory, Tobacco Science Research Institute of Fujian Tobacco Monopoly Bureau, Fuzhou, Fujian, ChinaThe Soil and Fertilization Research Laboratory, Tobacco Science Research Institute of Fujian Tobacco Monopoly Bureau, Fuzhou, Fujian, ChinaKey Laboratory for Genetics Breeding and Multiple Utilization of Crops, Ministry of Education/College of Agriculture, Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Agriculture and Forestry University, Fuzhou, Fujian, ChinaKey Laboratory for Genetics Breeding and Multiple Utilization of Crops, Ministry of Education/College of Agriculture, Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Agriculture and Forestry University, Fuzhou, Fujian, ChinaKey Laboratory for Genetics Breeding and Multiple Utilization of Crops, Ministry of Education/College of Agriculture, Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Agriculture and Forestry University, Fuzhou, Fujian, ChinaKey Laboratory for Genetics Breeding and Multiple Utilization of Crops, Ministry of Education/College of Agriculture, Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Agriculture and Forestry University, Fuzhou, Fujian, ChinaKey Laboratory for Genetics Breeding and Multiple Utilization of Crops, Ministry of Education/College of Agriculture, Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Agriculture and Forestry University, Fuzhou, Fujian, ChinaKey Laboratory for Genetics Breeding and Multiple Utilization of Crops, Ministry of Education/College of Agriculture, Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Agriculture and Forestry University, Fuzhou, Fujian, ChinaCollege of JunCao Science and Ecology, Fujian Agriculture and Forestry University, Fuzhou, ChinaKey Laboratory for Genetics Breeding and Multiple Utilization of Crops, Ministry of Education/College of Agriculture, Key Laboratory of Crop Ecology and Molecular Physiology (Fujian Agriculture and Forestry University), Fujian Agriculture and Forestry University, Fuzhou, Fujian, ChinaIntroductionLime and biochar are widely utilized to enhance nitrogen utilization in crops grown on acidic soils, though each has its own set of limitations. Understanding their combined effects is crucial for optimizing soil remediation strategies.MethodsThis study investigates the impact of lime and biochar on nitrogen utilization efficiency (NUE) in a tobacco monoculture system, which has been practiced for 20 years on acidified soils in Fuzhou, southeastern China, over the period from 2021 to 2022. Four treatments were applied: control (CK), lime alone (L), biochar alone (B), and a lime-biochar combination (L+B).ResultsThe results indicated that all treatments significantly improved NUE, with increases ranging from 20.07% to 27.17% compared to CK. Biochar (B) was more effective than lime (L), and the combined treatment (L+B) showed comparable effects to biochar alone. Correlation analysis revealed that increases in soil pH and exchangeable base cations facilitated nitrogen transformation, thereby enhancing NUE. Lime treatments (L, L+B) promoted nitrification potential in rhizosphere soil, whereas biochar application (B, L+B) resulted in elevated nitrate nitrogen content. Microbial functional analysis indicated that lime (L, L+B) enhanced nitrification, while biochar (B, L+B) fostered dissimilatory nitrate reduction, thereby improving nitrogen retention. Pearson correlation analysis demonstrated a strong positive relationship between dissimilatory nitrate reduction and both soil alkali-hydrolyzable nitrogen and nitrate nitrogen contents.ConclusionThese findings suggest that lime enhances nitrification, while biochar promotes nitrate retention, together increasing soil nitrogen availability. The combined application of lime and biochar integrates these benefits, yielding results comparable to biochar alone. This study offers valuable insights into the synergistic use of lime and biochar for mitigating soil acidification and optimizing nitrogen management in agricultural systems.https://www.frontiersin.org/articles/10.3389/fpls.2025.1530128/fulllimebiocharacidic soilnitrogen utilization efficiencytobacco |
| spellingShingle | Bianhong Zhang Lina Tang Zhicheng Chen Xiaoyan Chen Lindong You Ruixin Pan Ting Chen Yifei Liu Wenxiong Lin Wenxiong Lin Jinwen Huang Comparative and synergistic impacts of lime and biochar on soil properties, nitrogen transformation, and microbial function in acidic soils under tobacco cropping Frontiers in Plant Science lime biochar acidic soil nitrogen utilization efficiency tobacco |
| title | Comparative and synergistic impacts of lime and biochar on soil properties, nitrogen transformation, and microbial function in acidic soils under tobacco cropping |
| title_full | Comparative and synergistic impacts of lime and biochar on soil properties, nitrogen transformation, and microbial function in acidic soils under tobacco cropping |
| title_fullStr | Comparative and synergistic impacts of lime and biochar on soil properties, nitrogen transformation, and microbial function in acidic soils under tobacco cropping |
| title_full_unstemmed | Comparative and synergistic impacts of lime and biochar on soil properties, nitrogen transformation, and microbial function in acidic soils under tobacco cropping |
| title_short | Comparative and synergistic impacts of lime and biochar on soil properties, nitrogen transformation, and microbial function in acidic soils under tobacco cropping |
| title_sort | comparative and synergistic impacts of lime and biochar on soil properties nitrogen transformation and microbial function in acidic soils under tobacco cropping |
| topic | lime biochar acidic soil nitrogen utilization efficiency tobacco |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2025.1530128/full |
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