Carbon and nitrogen partitioning of wheat and field pea grown with two nitrogen levels under elevated CO2

CR Butterly; R Armstrong; D Chen; C Tang

Journal article

Carbon and nitrogen partitioning of wheat and field pea grown with two nitrogen levels under elevated CO2

CR Butterly, R Armstrong, D Chen, C Tang

Plant and Soil | Published : 2015

DOI: 10.1007/s11104-015-2441-5

Abstract

Background and Aims: Crop responses to elevated atmospheric CO2 are likely to be different in semi-arid cropping systems of Australia. This experiment aimed to investigate the interactive effects of atmospheric CO2 and nitrogen (N) fertiliser on carbon (C) and N partitioning in the soil-plant system of Wheat (Triticum aestivum L.) and field pea (Pisum sativum L.). Methods: Plants were grown with 40 or 100 mg N kg−1 under ambient CO2 (390 ppm) or elevated CO2 (eCO2; 550 ppm) using free-air CO2 enrichment (SoilFACE). Repeated 13CO2 pulse labelling was used to quantify C transfer via plant to the soil. Destructive sampling was performed at grain filling and maturity. Results: eCO2 increased sho..

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University of Melbourne Researchers

Clayton Butterly Author

Roger Armstrong Author

Deli Chen Author

Related Projects (1)

BELOW-GROUND PROCESSES: FILLING THE MISSING GAP IN PREDICTING THE RESPONSE OF GRAIN PRODUCTION TO ELEVATED CO2 IN SOUTHERN AUSTRALIA

Climate change is expected to have major impacts on the Australian grains industry, which is worth $7 billion annually. Although increases i..

Grants

Awarded by Australian Research Council

Funding Acknowledgements

This research was supported by an Australian Research Council Linkage Project (LP100200757), and was conducted at the SoilFACE facility of the Department of Environment and Primary Industries (DEPI), Victoria at Horsham. We are grateful to Dr Xiaojuan Wang for help in establishing experiments, Joseph Conheady for help with fieldwork and Dr Jairo Palta and Dr Karen Baumann for providing useful feedback on the <SUP>13</SUP>C pulse-labelling technique.