Incorporating organic matter alters soil greenhouse gas emissions and increases grain yield in a semi-arid climate

•Increasing soil OM increased N2O emissions and decreased CH4 uptake.•Nitrous oxide emissions were low and represented no OM (+N; 41gN2O-Nha−1)=no OM (0N; 14gN2O-Nha−1). Increasing soil OM also decreased CH4 uptake by 30%. Management practices that increase soil OM in sandy-textured rainfed, croppi...

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Bibliographic Details
Published in:Agriculture, ecosystems & environment ecosystems & environment, 2016-09, Vol.231, p.320-330
Main Authors: Barton, Louise, Hoyle, Frances C., Stefanova, Katia T., Murphy, Daniel V.
Format: Article
Language:English
Subjects:
Agriculture
Carbon sequestration
Methane
Nitrous oxide
Semi-arid climate
Soil organic carbon
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Summary:•Increasing soil OM increased N2O emissions and decreased CH4 uptake.•Nitrous oxide emissions were low and represented no OM (+N; 41gN2O-Nha−1)=no OM (0N; 14gN2O-Nha−1). Increasing soil OM also decreased CH4 uptake by 30%. Management practices that increase soil OM in sandy-textured rainfed, cropping soils in semi-arid regions should be encouraged as they can improve grain yield without substantial increases in soil N2O or CH4 emissions.
ISSN:0167-8809
1873-2305
DOI:10.1016/j.agee.2016.07.004