Cited by 397Bioenergy crop production and managementSoil Carbon and Nitrogen DynamicsAgronomic Practices and Intercropping Systems

Carbon mitigation by the energy crop, Miscanthus

CLIFTON‐BROWN, JOHN C., BREUER, JÖERN, JONES, MICHAEL B.·2007·Global Change Biology

Abstract

Biomass crops mitigate carbon emissions by both fossil fuel substitution and sequestration of carbon in the soil. We grew Miscanthus x giganteus for 16 years at a site in southern Ireland to (i) compare methods of propagation, (ii) compare response to fertilizer application and quantify nutrient offtakes, (iii) measure long‐term annual biomass yields, (iv) estimate carbon sequestration to the soil and (v) quantify the carbon mitigation by the crop. There was no significant difference in the yield between plants established from rhizome cuttings or by micro‐propagation. Annual off‐takes of N and P were easily met by soil reserves, but soil K reserves were low in unfertilized plots. Potassium deficiency was associated with lower harvestable yield. Yields increased for 5 years following establishment but after 10 years showed some decline which could not be accounted for by the climate driven growth model MISCANMOD. Measured yields were normalized to estimate both autumn (at first frost) and spring harvests (15 March of the subsequent year). Average autumn and spring yields over the 15 harvest years were 13.4±1.1 and 9.0±0.7 t DW ha −1 yr −1 respectively. Below ground biomass in February 2002 was 20.6±4.6 t DW ha −1 . Miscanthus derived soil organic carbon sequestration detected by a change in 13 C signal was 8.9±2.4 t C ha −1 over 15 years. We estimate total carbon mitigation by this crop over 15 years ranged from 5.2 to 7.2 t C ha −1 yr −1 depending on the harvest time.

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Crossref · 10.1111/j.1365-2486.2007.01438.x

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Authors
CLIFTON‐BROWN, J. C., BREUER, J., & JONES, M. B.
Affiliations
Trinity College Dublin (IE)
Venue
Global Change Biology
Publisher
Wiley
Published
2007-08-21
Volume
13
Issue
11
Pages
2296-2307
ISSN
  • 1354-1013 (ISSN-L)
  • 1365-2486
OpenAlex
W2012318172
Cited by
393
References
27
Citations by year
2026: 6 · 2025: 9 · 2024: 18 · 2023: 15 · 2022: 13 · 2021: 11 · 2020: 21 · 2019: 23 · 2018: 14 · 2017: 23 · 2016: 35 · 2015: 20 · 2014: 33 · 2013: 45 · 2012: 24
FWCI
37.00
Type
journal article
Language
en
Open access
closed
Locations
Global Change Biology (publishedVersion)
Funders
European Commission
Topics
  • Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Bioenergy crop production and management
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Agronomic Practices and Intercropping Systems
Keywords
Miscanthus × giganteus, energy crops, carbon mitigation, soil carbon sequestration, biomass yield, rhizome cuttings, fertilizer response, nutrient uptake, potassium deficiency, harvest time

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