Long-term influence of biochar on native organic carbon mineralisation in a low-carbon clayey soil

  title={Long-term influence of biochar on native organic carbon mineralisation in a low-carbon clayey soil},
  author={Bhupinder Pal Singh and Annette L Cowie},
  booktitle={Scientific reports},
Biochar can influence native soil organic carbon (SOC) mineralisation through "priming effects". However, the long-term direction, persistence and extent of SOC priming by biochar remain uncertain. Using natural (13)C abundance and under controlled laboratory conditions, we show that biochar-stimulated SOC mineralisation ("positive priming") caused a loss of 4 to 44 mg C g(-1) SOC over 2.3 years in a clayey, unplanted soil (0.42% OC). Positive priming was greater for manure-based or 400°C… CONTINUE READING
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