home    about    browse    search    latest    help 
Login | Create Account

A review and meta-analysis ofmitigation measures for nitrous oxide emissions from crop residues

Abalos, D; Recous, S.; Butterbach-Bahl, K.; Notaris, C.; Rittl, T. F.; Topp, C F E; Søren, P.O.; Hansen, S.; Bleken, M.A.; Rees, R M and Olesen, J.E. (2022) A review and meta-analysis ofmitigation measures for nitrous oxide emissions from crop residues. Science of the Total Environment journal, 828, p. 154388.

[thumbnail of Abalos et al 2022 b.pdf] PDF - Published Version - English
Limited to [Depositor and staff only]

1MB


Summary

Crop residues are of crucial importance to maintain or even increase soil carbon stocks and fertility, and thereby to ad- dress the global challenge of climate change mitigation. However, crop residues can also potentially stimulate emis- sions of the greenhouse gas nitrous oxide (N2O) from soils. A better understanding of how to mitigate N2O emissions due to crop residue management while promoting positive effects on soil carbon is needed to reconcile the opposing effects of crop residues on the greenhouse gas balance of agroecosystems. Here, we combine a literature review and a meta-analysis to identify and assess measures for mitigating N2O emissions due to crop residue applica- tion to agricultural fields. Our study shows that crop residue removal, shallow incorporation, incorporation ofresidues with C:N ratio > 30 and avoiding incorporation of residues from crops terminated at an immature physiological stage, are measures leading to significantly lower N2O emissions. Other practices such as incorporation timing and interac- tions with fertilisers are less conclusive. Several of the evaluated N2O mitigation measures implied negative side- effects on yield, soil organic carbon storage, nitrate leaching and/or ammonia volatilization. We identified additional strategies with potential to reduce crop residue N2O emissions without strong negative side-effects, which require fur- ther research. These are: a) treatment ofcrop residues before field application, e.g., conversion ofresidues into biochar or anaerobic digestate, b) co-application with nitrification inhibitors or N-immobilizing materials such as compost with a high C:N ratio, paper waste or sawdust, and c) use ofresidues obtained from crop mixtures. Our study provides a scientific basis to be developed over the coming years on how to increase the sustainability of agroecosystems though adequate crop residue management.


EPrint Type:Journal paper
Keywords:Agricultural management, Tillage, Plant litter, Trade-offs, nitrogen
Agrovoc keywords:
Language
Value
URI
English
nitrous oxide
http://aims.fao.org/aos/agrovoc/c_12838
English
mitigation
http://aims.fao.org/aos/agrovoc/c_10a6fbd8
English
residues
http://aims.fao.org/aos/agrovoc/c_6518
English
agricultural soils
http://aims.fao.org/aos/agrovoc/c_33934
Subjects: Environmental aspects > Air and water emissions
Research affiliation: Denmark > AU - Aarhus University
Germany
France > INRAe - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement
Norway > NMBU - Norwegian University of Life Sciences
Norway > NORSØK - Norwegian Centre for Organic Agriculture
UK > Scottish Rural Colleges (SRUC - previously SAC)
H2020 or FP7 Grant Agreement Number:696356
Related Links:https://orgprints.org/id/eprint/43610/
Deposited By: F Rittl, Tatiana
ID Code:43892
Deposited On:28 Mar 2022 06:14
Last Modified:28 Mar 2022 06:14
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

Repository Staff Only: item control page

Downloads

Downloads per month over past year

View more statistics