Effects of tillage practices on soil organic carbon, microbial community and necromass in a double rice cropping system

No-tillage (NT) can enhance the accumulation of soil organic carbon (SOC), thereby aiding in climate change mitigation and improving soil fertility. However, the relations of soil microbial abundance, composition, and necromass to SOC increase under NT are still unclear, limiting the knowledge of SO...

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Published in:Applied soil ecology : a section of Agriculture, ecosystems & environment ecosystems & environment, 2024-02, Vol.194, p.105190, Article 105190
Main Authors: Qi, Jian-Ying, Yao, Xiang-Bin, Zhang, Xue-Chan, Fan, Mei-Yi, Xue, Jian-Fu, Cao, Jun-Li, Virk, Ahmad Latif, Pan, Sheng-Gang, Tang, Xiang-Ru
Format: Article
Language:English
Subjects:
Amino sugar
Carbon neutrality
Carbon stability
Conservation agriculture
Microbial derived carbon
Microbial necromass
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Summary:No-tillage (NT) can enhance the accumulation of soil organic carbon (SOC), thereby aiding in climate change mitigation and improving soil fertility. However, the relations of soil microbial abundance, composition, and necromass to SOC increase under NT are still unclear, limiting the knowledge of SOC stabilization. We performed a 5-year paddy field experiment in southern China including NT, reduced tillage (RT) and conventional tillage (CT). Soil microbial necromass C (MC, including fungal and bacterial necromass C, FC, and BC) were analyzed, as well as soil bacterial and fungal community composition. At a depth of 0–10 cm, NT increased FC (by 48.6 %–50.2 %, P 
ISSN:0929-1393
DOI:10.1016/j.apsoil.2023.105190