Journal article
Influence of elevated atmospheric carbon dioxide and supplementary irrigation on greenhouse gas emissions from a spring wheat crop in southern Australia
SK Lam, D Chen, R Norton, R Armstrong, AR Mosier
Journal of Agricultural Science | CAMBRIDGE UNIV PRESS | Published : 2013
Abstract
The effect of elevated carbon dioxide (CO2) concentration on greenhouse gas (GHG) emission from semi-arid cropping systems is poorly understood. Closed static chambers were used to measure the fluxes of nitrous oxide (N2O), CO2 and methane (CH4) from a spring wheat (Triticum aestivum L. cv. Yitpi) crop-soil system at the Australian grains free-air carbon dioxide enrichment (AGFACE) facility at Horsham in southern Australia in 2009. The targeted atmospheric CO2 concentrations (hereafter CO2 concentration is abbreviated as [CO2]) were 390 (ambient) and 550 (elevated) μmol/mol for both rainfed and supplementary irrigated treatments. Gas measurements were conducted at five key growth stages of w..
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Funding Acknowledgements
This work was supported by the Grains Research and Development Corporation, the Federal Department of Agriculture, Fisheries and Forestry, the Victorian Department of Primary Industries, the University of Melbourne and the Australian Research Council. The authors thank Mr. Peter Howie and Mr. Russel Argall for field assistance, Dr Weijin Wang, Mr. Steven Reeves and Dr Helen Suter for assistance with gas analyses and Dr Xing Chen and Dr Huilin Li for soil chemical analyses.