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Cover Crop Residue Amount and Quality Effects on Soil Organic Carbon Mineralization

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  • Binod Ghimire

    (Department of Entomology, Plant Pathology and Weed Science, New Mexico State University, Las Cruces, NM 88003, USA)

  • Rajan Ghimire

    (Department of Plant and Environmental Sciences, New Mexico State University, Las Cruces, NM 88003, USA
    Agricultural Science Center, New Mexico State University, 2346 State Road 288, Clovis, NM 88003, USA)

  • Dawn VanLeeuwen

    (Economics, Applied Statistics and International Business Department, New Mexico State University, Las Cruces, NM 88003, USA)

  • Abdel Mesbah

    (Department of Entomology, Plant Pathology and Weed Science, New Mexico State University, Las Cruces, NM 88003, USA
    Agricultural Science Center, New Mexico State University, 2346 State Road 288, Clovis, NM 88003, USA)

Abstract

Decline in soil organic carbon (SOC) and the associated impacts on crop production under conventional farming raises concerns on how alternative management practices increase SOC sequestration and improve agricultural sustainability. This study aimed to understand SOC mineralization kinetics with different cover crop (CC) residue amendments. Soil samples were collected from a fallow and three CC (pea, oat, and canola) plots. Soil samples from the CC plots were manipulated with zero, five, and 10 Mg ha −1 of the respective CC residues. All soil samples were incubated for eight weeks, SOC mineralization was monitored, and the first order kinetic and parabolic equation models were fitted to the observed data for estimating labile SOC ( C 0 ), and the decomposition rate constant ( k ). Subsequent comparisons of fitted model parameters were based on the first order kinetic model. The C 0 varied with the residue amount while k varied with CC type. C 0 was 591–858% greater with 10 Mg ha −1 and 289–456% greater with five Mg ha −1 residue additions while k was 122–297% greater with 10 Mg ha −1 and 94–240% greater with five Mg ha −1 residue additions when compared to the fallow treatment. The CC residue stimulated cumulative carbon mineralization ( C min ) irrespective of CC type, suggesting that cover cropping has potential to improve SOC cycling in agroecosystems.

Suggested Citation

  • Binod Ghimire & Rajan Ghimire & Dawn VanLeeuwen & Abdel Mesbah, 2017. "Cover Crop Residue Amount and Quality Effects on Soil Organic Carbon Mineralization," Sustainability, MDPI, vol. 9(12), pages 1-14, December.
  • Handle: RePEc:gam:jsusta:v:9:y:2017:i:12:p:2316-:d:122709
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    References listed on IDEAS

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    1. Cynthia M. Kallenbach & Serita D. Frey & A. Stuart Grandy, 2016. "Direct evidence for microbial-derived soil organic matter formation and its ecophysiological controls," Nature Communications, Nature, vol. 7(1), pages 1-10, December.
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    Cited by:

    1. Pramod Acharya & Rajan Ghimire & Youngkoo Cho, 2019. "Linking Soil Health to Sustainable Crop Production: Dairy Compost Effects on Soil Properties and Sorghum Biomass," Sustainability, MDPI, vol. 11(13), pages 1-13, June.
    2. Ariel Freidenreich & Sanku Dattamudi & Yuncong Li & Krishnaswamy Jayachandran, 2022. "Influence of Leguminous Cover Crops on Soil Chemical and Biological Properties in a No-Till Tropical Fruit Orchard," Land, MDPI, vol. 11(6), pages 1-18, June.
    3. Sushanta Kumar Naik & Santosh Sambhaji Mali & Bal Krishna Jha & Rakesh Kumar & Surajit Mondal & Janki Sharan Mishra & Arun Kumar Singh & Ashis Kumar Biswas & Arbind Kumar Choudhary & Jaipal Singh Chou, 2023. "Intensification of Rice-Fallow Agroecosystem of South Asia with Oilseeds and Pulses: Impacts on System Productivity, Soil Carbon Dynamics and Energetics," Sustainability, MDPI, vol. 15(2), pages 1-27, January.
    4. Gheorghe Stegarescu & Jordi Escuer-Gatius & Kaido Soosaar & Karin Kauer & Tõnu Tõnutare & Alar Astover & Endla Reintam, 2020. "Effect of Crop Residue Decomposition on Soil Aggregate Stability," Agriculture, MDPI, vol. 10(11), pages 1-17, November.
    5. McClelland, Shelby C. & Paustian, Keith & Williams, Stephen & Schipanski, Meagan E., 2021. "Modeling cover crop biomass production and related emissions to improve farm-scale decision-support tools," Agricultural Systems, Elsevier, vol. 191(C).
    6. Xiufen Li & Andrew Tan & Kun Chen & Yeming Pan & Terry Gentry & Fugen Dou, 2021. "Effect of Cover Crop Type and Application Rate on Soil Nitrogen Mineralization and Availability in Organic Rice Production," Sustainability, MDPI, vol. 13(5), pages 1-19, March.

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