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Introduction of grass-clover crops as biogas feedstock in cereal-dominated crop rotations. Part II: Effects on greenhouse gas emissions

Björnsson, Lovisa LU and Prade, Thomas LU (2014) In Proceedings of the 9th International Conference on Life Cycle Assessment in the Agri-Food Sector p.134-141
Abstract
In an analysis of climate effects, increased soil organic carbon will have a dual effect due to both increased soil fertility and carbon sequestration. Even so, soil carbon changes are neglected in many crop production LCAs. In the present study, the introduction of grass-clover crops in cereal-dominated crop production was evaluated. The grass-clover crops were used for biogas production, and the digested residue was recycled to the farm as biofertilizer. A shift from the cereal-dominated crop rotation to integrated production of food crops and one or two years of grass-clover crops used as biogas feedstock would result in avoided emissions of 2-3 t CO2-eq. ha-1 a-1. Integrated food and energy crop production would in this case improve... (More)
In an analysis of climate effects, increased soil organic carbon will have a dual effect due to both increased soil fertility and carbon sequestration. Even so, soil carbon changes are neglected in many crop production LCAs. In the present study, the introduction of grass-clover crops in cereal-dominated crop production was evaluated. The grass-clover crops were used for biogas production, and the digested residue was recycled to the farm as biofertilizer. A shift from the cereal-dominated crop rotation to integrated production of food crops and one or two years of grass-clover crops used as biogas feedstock would result in avoided emissions of 2-3 t CO2-eq. ha-1 a-1. Integrated food and energy crop production would in this case improve soil organic carbon content at the same time as resulting in considerably decreased greenhouse gas emissions from the cultivation system. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
Proceedings of the 9th International Conference on Life Cycle Assessment in the Agri-Food Sector
editor
Schenck, Rita; Huizenga, Douglas; and
pages
8 pages
publisher
ACLCA, Vashon, WA, USA
ISBN
ISBN: 978-0-9882145-7-6
language
English
LU publication?
yes
id
aec40ba2-492a-4b00-a884-3f9c7ce9f40a
date added to LUP
2016-11-30 15:02:38
date last changed
2017-02-01 16:30:17
@inproceedings{aec40ba2-492a-4b00-a884-3f9c7ce9f40a,
  abstract     = {In an analysis of climate effects, increased soil organic carbon will have a dual effect due to both increased soil fertility and carbon sequestration. Even so, soil carbon changes are neglected in many crop production LCAs. In the present study, the introduction of grass-clover crops in cereal-dominated crop production was evaluated. The grass-clover crops were used for biogas production, and the digested residue was recycled to the farm as biofertilizer. A shift from the cereal-dominated crop rotation to integrated production of food crops and one or two years of grass-clover crops used as biogas feedstock would result in avoided emissions of 2-3 t CO2-eq. ha-1 a-1. Integrated food and energy crop production would in this case improve soil organic carbon content at the same time as resulting in considerably decreased greenhouse gas emissions from the cultivation system.},
  author       = {Björnsson, Lovisa and Prade, Thomas},
  booktitle    = {Proceedings of the 9th International Conference on Life Cycle Assessment in the Agri-Food Sector},
  editor       = {Schenck, Rita and Huizenga, Douglas},
  isbn         = {ISBN: 978-0-9882145-7-6},
  language     = {eng},
  pages        = {134--141},
  publisher    = {ACLCA, Vashon, WA, USA},
  title        = {Introduction of grass-clover crops as biogas feedstock in cereal-dominated crop rotations. Part II: Effects on greenhouse gas emissions},
  year         = {2014},
}