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August 12, 2026Canadian Journal of Soil Science

Long-term Fall Cover Cropping with Mixed Radish and Rye Did Not Alter Microbial Soil Carbon Cycling Dynamics Under Corn

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Authors

AMAmanda D. MitchellMAMelissa ArcandBHBobbi L. Helgason

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Overview

Randomized trial examines soil carbon dynamics with radish-rye cover crops in corn, suggesting minimal impact on microbial processes.

Key Points

  • This research aimed to evaluate the long-term effects of radish-rye cover cropping on microbial soil carbon cycling under corn.
  • Examined microbial abundance and carbon cycling dynamics in corn rotations.
  • Measured mineralizable carbon and thermodynamic efficiency using glucose and alanine.
  • Assessed substrate induced respiration in relation to glycogen from radish-rye cover crops.
  • No significant change in mineralizable carbon was observed (p > 0.05).
  • Thermodynamic efficiency of glucose use remained unaffected following cover crop addition (p > 0.05).
  • Greater substrate induced respiration was noted in response to glycogen, indicating adaptation of microbial communities.

Cite This Study

Mitchell et al. (2026) studied this question.

synapsesocial.com/papers/6a7c20ae06a85aed514b7ae0https://doi.org/10.1139/cjss-2025-0118
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Also Consider

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  1. 1Priming effects decrease with the quantity of cover crop residues – Potential implications for soil carbon sequestration2023 · 68 citations
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  3. 3Surface soil sampling underestimates soil carbon and nitrogen storage of long-term cover cropping2024 · 12 citations
  4. 4Do cover crops benefit soil microbiome? A meta-analysis of current research2020 · 496 citations