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Straw Incorporation Thresholds for Soil Carbon and Nitrogen Stability in Maize Cropping and Fallow Systems.

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Title: Straw Incorporation Thresholds for Soil Carbon and Nitrogen Stability in Maize Cropping and Fallow Systems.
Authors: Zhang, Qijian1 (AUTHOR), Yan, Shuangshuang1 (AUTHOR), Zhang, Xulang1 (AUTHOR), Ji, Tianjiao2 (AUTHOR), Song, Qiulai3 (AUTHOR), Yan, Chao1 (AUTHOR) yanchao504@126.com, Ma, Chunmei1 (AUTHOR) chunmm@neau.edu.cn, Gong, Zhenping1 (AUTHOR)
Source: European Journal of Soil Science. Mar2026, Vol. 77 Issue 2, p1-16. 16p.
Subjects: Crop residues, Fallowing, Carbon in soils, Nitrogen in soils, Corn farming, Carbon sequestration
Geographic Terms: Manchuria (China)
Abstract: Straw incorporation (SI) increases soil organic carbon (SOC) and soil total nitrogen (STN). However, the differences in soil C and N fractions between the maize cropping and fallow systems under different SI rates in the black soil region of Northeast China remain unclear. In a 6‐year experiment, we examined these two systems by using circular frames with five annual SI rates (0, 9.2, 18.4, 27.6, and 36.8 Mg ha−1) to investigate their effects on soil C and N fractions and storage potential. SI significantly enhanced the SOC and STN concentrations in both systems. Compared to fallow, continuous maize cropping resulted in higher depletion of oxidizable organic C (EOC) and amino sugar N (ASN). However, it maintained greater light fraction organic C (LFOC), particulate organic C (POC), and hydrolyzable unknown N (HUN) concentrations in the 0–15 cm soil layer. Fallow increased the soil C:N ratio and exhibited higher average annual C and N sequestration rates (0.70 and 0.01 Mg ha−1 year−1, respectively) compared to the maize cropping system. However, increasing SI rates did not significantly affect the transformation efficiency of straw‐derived nutrients. Conventional SI rates in continuous maize cultivation led to soil C and N losses, while higher SI rates and fallow management effectively retained nutrients. Thus, to prevent concurrent losses of soil C and N pools under continuous maize cropping in the 0–30 cm soil layer under current soil conditions, an annual input of at least 6.8 Mg C ha−1 year−1 and 0.2 Mg N ha−1 year−1 is recommended. Highlights: Higher straw return did not alter straw‐derived C and N conversion efficiency.Continuous maize cropping increased soil LFOC, POC, and HUN compared to fallow.Fallow increased soil C:N ratio and annual C and N sequestration rates.Higher straw incorporation or fallow management reduced soil C and N losses. [ABSTRACT FROM AUTHOR]
Copyright of European Journal of Soil Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 193321560
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Straw Incorporation Thresholds for Soil Carbon and Nitrogen Stability in Maize Cropping and Fallow Systems.
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  Data: <searchLink fieldCode="AR" term="%22Zhang%2C+Qijian%22">Zhang, Qijian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yan%2C+Shuangshuang%22">Yan, Shuangshuang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Xulang%22">Zhang, Xulang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ji%2C+Tianjiao%22">Ji, Tianjiao</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Song%2C+Qiulai%22">Song, Qiulai</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yan%2C+Chao%22">Yan, Chao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> yanchao504@126.com</i><br /><searchLink fieldCode="AR" term="%22Ma%2C+Chunmei%22">Ma, Chunmei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> chunmm@neau.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Gong%2C+Zhenping%22">Gong, Zhenping</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22European+Journal+of+Soil+Science%22">European Journal of Soil Science</searchLink>. Mar2026, Vol. 77 Issue 2, p1-16. 16p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Crop+residues%22">Crop residues</searchLink><br /><searchLink fieldCode="DE" term="%22Fallowing%22">Fallowing</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+in+soils%22">Carbon in soils</searchLink><br /><searchLink fieldCode="DE" term="%22Nitrogen+in+soils%22">Nitrogen in soils</searchLink><br /><searchLink fieldCode="DE" term="%22Corn+farming%22">Corn farming</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+sequestration%22">Carbon sequestration</searchLink>
– Name: SubjectGeographic
  Label: Geographic Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Manchuria+%28China%29%22">Manchuria (China)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Straw incorporation (SI) increases soil organic carbon (SOC) and soil total nitrogen (STN). However, the differences in soil C and N fractions between the maize cropping and fallow systems under different SI rates in the black soil region of Northeast China remain unclear. In a 6‐year experiment, we examined these two systems by using circular frames with five annual SI rates (0, 9.2, 18.4, 27.6, and 36.8 Mg ha−1) to investigate their effects on soil C and N fractions and storage potential. SI significantly enhanced the SOC and STN concentrations in both systems. Compared to fallow, continuous maize cropping resulted in higher depletion of oxidizable organic C (EOC) and amino sugar N (ASN). However, it maintained greater light fraction organic C (LFOC), particulate organic C (POC), and hydrolyzable unknown N (HUN) concentrations in the 0–15 cm soil layer. Fallow increased the soil C:N ratio and exhibited higher average annual C and N sequestration rates (0.70 and 0.01 Mg ha−1 year−1, respectively) compared to the maize cropping system. However, increasing SI rates did not significantly affect the transformation efficiency of straw‐derived nutrients. Conventional SI rates in continuous maize cultivation led to soil C and N losses, while higher SI rates and fallow management effectively retained nutrients. Thus, to prevent concurrent losses of soil C and N pools under continuous maize cropping in the 0–30 cm soil layer under current soil conditions, an annual input of at least 6.8 Mg C ha−1 year−1 and 0.2 Mg N ha−1 year−1 is recommended. Highlights: Higher straw return did not alter straw‐derived C and N conversion efficiency.Continuous maize cropping increased soil LFOC, POC, and HUN compared to fallow.Fallow increased soil C:N ratio and annual C and N sequestration rates.Higher straw incorporation or fallow management reduced soil C and N losses. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of European Journal of Soil Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1111/ejss.70312
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 16
        StartPage: 1
    Subjects:
      – SubjectFull: Crop residues
        Type: general
      – SubjectFull: Fallowing
        Type: general
      – SubjectFull: Carbon in soils
        Type: general
      – SubjectFull: Nitrogen in soils
        Type: general
      – SubjectFull: Corn farming
        Type: general
      – SubjectFull: Carbon sequestration
        Type: general
      – SubjectFull: Manchuria (China)
        Type: general
    Titles:
      – TitleFull: Straw Incorporation Thresholds for Soil Carbon and Nitrogen Stability in Maize Cropping and Fallow Systems.
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            NameFull: Zhang, Qijian
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            NameFull: Yan, Shuangshuang
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            NameFull: Zhang, Xulang
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            NameFull: Ji, Tianjiao
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            NameFull: Song, Qiulai
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            NameFull: Yan, Chao
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            NameFull: Ma, Chunmei
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            NameFull: Gong, Zhenping
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            – D: 01
              M: 03
              Text: Mar2026
              Type: published
              Y: 2026
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            – TitleFull: European Journal of Soil Science
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