Fertilizer reduction and biochar amendment promote soil mineral-associated organic carbon, bacterial activity, and enzyme activity in a jasmine garden in southeast China

Reducing chemical fertilizers and biochar amendment is essential for achieving carbon neutrality, addressing global warming, and promoting sustainable agricultural development. Biochar amendment, a carbon rich soil additive produced through biomass pyrolysis, enhances soil fertility, increases crop...

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Published in:The Science of the total environment 2024-12, Vol.954, p.176300, Article 176300
Main Authors: Yang, Fajun, Wang, Weiqi, Wu, Ziwei, Peng, Jiahao, Xu, Hongda, Ge, Maoquan, Lin, Shaoying, Zeng, Yu, Sardans, Jordi, Wang, Chun, Peñuelas, Josep
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Language:English
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Bacterial community structure
Biochar amendment
Enzyme activity
Fertilizer reduction
Jasminum sambac
KEGG pathway
Mineral associated organic carbon
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container_title The Science of the total environment
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creator Yang, Fajun
Wang, Weiqi
Wu, Ziwei
Peng, Jiahao
Xu, Hongda
Ge, Maoquan
Lin, Shaoying
Zeng, Yu
Sardans, Jordi
Wang, Chun
Peñuelas, Josep
description Reducing chemical fertilizers and biochar amendment is essential for achieving carbon neutrality, addressing global warming, and promoting sustainable agricultural development. Biochar amendment, a carbon rich soil additive produced through biomass pyrolysis, enhances soil fertility, increases crop yield, and improves soil carbon storage. However, research on the combined effect of fertilizer reduction and biochar amendment on soil mineral associated organic carbon (MAOC) in jasmine gardens is limited. This study aims to determine if biochar can reduce industrial fertilizer usage without compromising soil quality. This study focuses on jasmine cultivation in southeastern China, employing four treatments: conventional fertilization (CK), biochar amendment without fertilizer (BA), fertilizer reduction (FR), and fertilizer reduction with biochar amendment (FRBA). The effects on MAOC, microbial abundance, and enzyme activity were investigated. The FRBA treatment significantly increased MAOC content by 19.98 % compared to CK (P 
doi_str_mv 10.1016/j.scitotenv.2024.176300
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Biochar amendment, a carbon rich soil additive produced through biomass pyrolysis, enhances soil fertility, increases crop yield, and improves soil carbon storage. However, research on the combined effect of fertilizer reduction and biochar amendment on soil mineral associated organic carbon (MAOC) in jasmine gardens is limited. This study aims to determine if biochar can reduce industrial fertilizer usage without compromising soil quality. This study focuses on jasmine cultivation in southeastern China, employing four treatments: conventional fertilization (CK), biochar amendment without fertilizer (BA), fertilizer reduction (FR), and fertilizer reduction with biochar amendment (FRBA). The effects on MAOC, microbial abundance, and enzyme activity were investigated. The FRBA treatment significantly increased MAOC content by 19.98 % compared to CK (P &lt; 0.05). The BA and FRBA treatments enhanced the diversity of soil bacteria, including Lactobacillus, Azospirillum, and Cutibacterium, which are associated with soil organic carbon sequestration and nutrient decomposition. The RandomForest model identified β-N-acetyl-glucosaminidase (NAG), electric conductivity (EC), β-1, 4-Glucosidase (BG), soil potential of Hydrogen (pH), soil bulk density (BD), and β-D-cellobiosidase (CBH) as key soil traits promoting MAOC accumulation (P &lt; 0.05). The results indicate that BA and FRBA improve soil bacterial community structure, enzyme activity, and MAOC content, promoting soil carbon accumulation through environmental factors and dominant bacteria. This study encourages future fertilization protocols that enhance fertilizer efficiency and carbon storage in crop soils. [Display omitted] •Combined fertilizer reduction and biochar application improved soil quality.•Biochar application improves soil bacterial community structure and enzyme activity.•Fertilizer reduction with biochar application increased SOC and MAOC content.•Rises in bacteria presence and enzyme activity favored the accumulation of MAOC.•Accumulation of MAOC enhanced soil carbon pool stability in jasmine garden.</description><identifier>ISSN: 0048-9697</identifier><identifier>ISSN: 1879-1026</identifier><identifier>EISSN: 1879-1026</identifier><identifier>DOI: 10.1016/j.scitotenv.2024.176300</identifier><identifier>PMID: 39293769</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Bacterial community structure ; Biochar amendment ; Enzyme activity ; Fertilizer reduction ; Jasminum sambac ; KEGG pathway ; Mineral associated organic carbon</subject><ispartof>The Science of the total environment, 2024-12, Vol.954, p.176300, Article 176300</ispartof><rights>2024</rights><rights>Copyright © 2024. 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The BA and FRBA treatments enhanced the diversity of soil bacteria, including Lactobacillus, Azospirillum, and Cutibacterium, which are associated with soil organic carbon sequestration and nutrient decomposition. The RandomForest model identified β-N-acetyl-glucosaminidase (NAG), electric conductivity (EC), β-1, 4-Glucosidase (BG), soil potential of Hydrogen (pH), soil bulk density (BD), and β-D-cellobiosidase (CBH) as key soil traits promoting MAOC accumulation (P &lt; 0.05). The results indicate that BA and FRBA improve soil bacterial community structure, enzyme activity, and MAOC content, promoting soil carbon accumulation through environmental factors and dominant bacteria. This study encourages future fertilization protocols that enhance fertilizer efficiency and carbon storage in crop soils. 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The BA and FRBA treatments enhanced the diversity of soil bacteria, including Lactobacillus, Azospirillum, and Cutibacterium, which are associated with soil organic carbon sequestration and nutrient decomposition. The RandomForest model identified β-N-acetyl-glucosaminidase (NAG), electric conductivity (EC), β-1, 4-Glucosidase (BG), soil potential of Hydrogen (pH), soil bulk density (BD), and β-D-cellobiosidase (CBH) as key soil traits promoting MAOC accumulation (P &lt; 0.05). The results indicate that BA and FRBA improve soil bacterial community structure, enzyme activity, and MAOC content, promoting soil carbon accumulation through environmental factors and dominant bacteria. This study encourages future fertilization protocols that enhance fertilizer efficiency and carbon storage in crop soils. 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subjects Bacterial community structure
Biochar amendment
Enzyme activity
Fertilizer reduction
Jasminum sambac
KEGG pathway
Mineral associated organic carbon
title Fertilizer reduction and biochar amendment promote soil mineral-associated organic carbon, bacterial activity, and enzyme activity in a jasmine garden in southeast China
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