Enhanced soil organic carbon stability in rhizosphere through manure application

Research output: Contribution to journalArticleResearchpeer review

Authors

  • Guodong Shao
  • Yi Xu
  • Jie Zhou
  • Peng Tian
  • Juanjuan Ai
  • Yadong Yang
  • Kazem Zamanian
  • Zhaohai Zeng
  • Huadong Zang

Research Organisations

External Research Organisations

  • China Agricultural University
  • University of Tübingen
  • Nanjing Agricultural University
  • Anhui Agricultural University
  • Nanjing University of Information Science and Technology
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Details

Original languageEnglish
Article number106223
JournalSoil and Tillage Research
Volume244
Early online date9 Jul 2024
Publication statusE-pub ahead of print - 9 Jul 2024

Abstract

Rhizosphere dynamics exert significant control over soil carbon (C) processes in agroecosystems, especially under various fertilization regimes. However, the impact of fertilization regimes on soil organic carbon (SOC) mineralization and its temperature sensitivity (Q10) in the rhizosphere compared to bulk soil remains poorly understood. Here, we collected rhizosphere and bulk soils (0–20 cm) of maize from a five-year field experiment with four fertilization regimes: without fertilizer (CK), purely mineral fertilizer (NPK), half mineral fertilizers combined with half manure (NPKM), and purely manure (M). Soils were incubated at both 15 °C and 25 °C for 60 days. Results demonstrated that M decreased specific SOC mineralization by 10–25 % compared to the NPK, regardless of soil locations and temperatures. The Q10 of the labile C pool in the bulk soil was increased by 38–93 %, whereas in the rhizosphere, the Q10 of both labile and stable C pools exhibited a decrease of 5–23 % in the NPKM and M compared to the NPK and CK. Additionally, the rhizosphere exhibited lower specific SOC mineralization and Q10 of the stable C pool, but higher Q10 of the labile C pool compared to the bulk soil across all fertilization regimes. These contrasting responses of SOC mineralization and its Q10 in rhizosphere and bulk soils following manure application are attributed to the variations in nutrient availability (i.e., dissolved organic N and C) and microbial activities (i.e., microbial biomass C and enzyme activity). Therefore, fertilization regimes that provide microbially available organic compounds, such as manuring, effectively inhibit SOC mineralization and enhance SOC stability to global warming in the rhizosphere. Such fertilization strategy can serve as a climate-smart agricultural practice to achieve C neutrality.

Keywords

    Carbon sequestration, Climate warming, Fertilization regimes, Labile and stable carbon, Temperature sensitivity

ASJC Scopus subject areas

Sustainable Development Goals

Cite this

Enhanced soil organic carbon stability in rhizosphere through manure application. / Shao, Guodong; Xu, Yi; Zhou, Jie et al.
In: Soil and Tillage Research, Vol. 244, 106223, 12.2024.

Research output: Contribution to journalArticleResearchpeer review

Shao, G., Xu, Y., Zhou, J., Tian, P., Ai, J., Yang, Y., Zamanian, K., Zeng, Z., & Zang, H. (2024). Enhanced soil organic carbon stability in rhizosphere through manure application. Soil and Tillage Research, 244, Article 106223. Advance online publication. https://doi.org/10.1016/j.still.2024.106223
Shao G, Xu Y, Zhou J, Tian P, Ai J, Yang Y et al. Enhanced soil organic carbon stability in rhizosphere through manure application. Soil and Tillage Research. 2024 Dec;244:106223. Epub 2024 Jul 9. doi: 10.1016/j.still.2024.106223
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abstract = "Rhizosphere dynamics exert significant control over soil carbon (C) processes in agroecosystems, especially under various fertilization regimes. However, the impact of fertilization regimes on soil organic carbon (SOC) mineralization and its temperature sensitivity (Q10) in the rhizosphere compared to bulk soil remains poorly understood. Here, we collected rhizosphere and bulk soils (0–20 cm) of maize from a five-year field experiment with four fertilization regimes: without fertilizer (CK), purely mineral fertilizer (NPK), half mineral fertilizers combined with half manure (NPKM), and purely manure (M). Soils were incubated at both 15 °C and 25 °C for 60 days. Results demonstrated that M decreased specific SOC mineralization by 10–25 % compared to the NPK, regardless of soil locations and temperatures. The Q10 of the labile C pool in the bulk soil was increased by 38–93 %, whereas in the rhizosphere, the Q10 of both labile and stable C pools exhibited a decrease of 5–23 % in the NPKM and M compared to the NPK and CK. Additionally, the rhizosphere exhibited lower specific SOC mineralization and Q10 of the stable C pool, but higher Q10 of the labile C pool compared to the bulk soil across all fertilization regimes. These contrasting responses of SOC mineralization and its Q10 in rhizosphere and bulk soils following manure application are attributed to the variations in nutrient availability (i.e., dissolved organic N and C) and microbial activities (i.e., microbial biomass C and enzyme activity). Therefore, fertilization regimes that provide microbially available organic compounds, such as manuring, effectively inhibit SOC mineralization and enhance SOC stability to global warming in the rhizosphere. Such fertilization strategy can serve as a climate-smart agricultural practice to achieve C neutrality.",
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T1 - Enhanced soil organic carbon stability in rhizosphere through manure application

AU - Shao, Guodong

AU - Xu, Yi

AU - Zhou, Jie

AU - Tian, Peng

AU - Ai, Juanjuan

AU - Yang, Yadong

AU - Zamanian, Kazem

AU - Zeng, Zhaohai

AU - Zang, Huadong

N1 - Publisher Copyright: © 2024 Elsevier B.V.

PY - 2024/7/9

Y1 - 2024/7/9

N2 - Rhizosphere dynamics exert significant control over soil carbon (C) processes in agroecosystems, especially under various fertilization regimes. However, the impact of fertilization regimes on soil organic carbon (SOC) mineralization and its temperature sensitivity (Q10) in the rhizosphere compared to bulk soil remains poorly understood. Here, we collected rhizosphere and bulk soils (0–20 cm) of maize from a five-year field experiment with four fertilization regimes: without fertilizer (CK), purely mineral fertilizer (NPK), half mineral fertilizers combined with half manure (NPKM), and purely manure (M). Soils were incubated at both 15 °C and 25 °C for 60 days. Results demonstrated that M decreased specific SOC mineralization by 10–25 % compared to the NPK, regardless of soil locations and temperatures. The Q10 of the labile C pool in the bulk soil was increased by 38–93 %, whereas in the rhizosphere, the Q10 of both labile and stable C pools exhibited a decrease of 5–23 % in the NPKM and M compared to the NPK and CK. Additionally, the rhizosphere exhibited lower specific SOC mineralization and Q10 of the stable C pool, but higher Q10 of the labile C pool compared to the bulk soil across all fertilization regimes. These contrasting responses of SOC mineralization and its Q10 in rhizosphere and bulk soils following manure application are attributed to the variations in nutrient availability (i.e., dissolved organic N and C) and microbial activities (i.e., microbial biomass C and enzyme activity). Therefore, fertilization regimes that provide microbially available organic compounds, such as manuring, effectively inhibit SOC mineralization and enhance SOC stability to global warming in the rhizosphere. Such fertilization strategy can serve as a climate-smart agricultural practice to achieve C neutrality.

AB - Rhizosphere dynamics exert significant control over soil carbon (C) processes in agroecosystems, especially under various fertilization regimes. However, the impact of fertilization regimes on soil organic carbon (SOC) mineralization and its temperature sensitivity (Q10) in the rhizosphere compared to bulk soil remains poorly understood. Here, we collected rhizosphere and bulk soils (0–20 cm) of maize from a five-year field experiment with four fertilization regimes: without fertilizer (CK), purely mineral fertilizer (NPK), half mineral fertilizers combined with half manure (NPKM), and purely manure (M). Soils were incubated at both 15 °C and 25 °C for 60 days. Results demonstrated that M decreased specific SOC mineralization by 10–25 % compared to the NPK, regardless of soil locations and temperatures. The Q10 of the labile C pool in the bulk soil was increased by 38–93 %, whereas in the rhizosphere, the Q10 of both labile and stable C pools exhibited a decrease of 5–23 % in the NPKM and M compared to the NPK and CK. Additionally, the rhizosphere exhibited lower specific SOC mineralization and Q10 of the stable C pool, but higher Q10 of the labile C pool compared to the bulk soil across all fertilization regimes. These contrasting responses of SOC mineralization and its Q10 in rhizosphere and bulk soils following manure application are attributed to the variations in nutrient availability (i.e., dissolved organic N and C) and microbial activities (i.e., microbial biomass C and enzyme activity). Therefore, fertilization regimes that provide microbially available organic compounds, such as manuring, effectively inhibit SOC mineralization and enhance SOC stability to global warming in the rhizosphere. Such fertilization strategy can serve as a climate-smart agricultural practice to achieve C neutrality.

KW - Carbon sequestration

KW - Climate warming

KW - Fertilization regimes

KW - Labile and stable carbon

KW - Temperature sensitivity

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DO - 10.1016/j.still.2024.106223

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VL - 244

JO - Soil and Tillage Research

JF - Soil and Tillage Research

SN - 0167-1987

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ER -

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