Effects of free-air CO2 enrichment (FACE) on N, P and K uptake of soybean in northern China

Hao, Xingyu and Li, Ping and Han, Xue and Norton, R. M. and Lam, S. K. and Zong, Yuzeng and Sun, Ming and Lin, Erda and Gao, Zhiqiang (2016) Effects of free-air CO2 enrichment (FACE) on N, P and K uptake of soybean in northern China. Agricultural and Forest Meteorology, 218-219. pp. 261-266. ISSN 0168-1923


The objective of this study was to investigate the effect of elevated (550 ± 19 µmol mol−1) [CO2] on uptakeand utilization of nitrogen (N), phosphorus (P) and potassium (K) by soybean (Glycine max (L.) Merr) atthe free-air carbon dioxide enrichment (FACE) experimental facility in northern China. The above-ground biomass and root biomass were significantly increased under elevated [CO2]. Elevated [CO2] significantlydecreased the N concentration of the above-ground part at the beginning bloom (R1) stage, but had noeffect at the beginning pod (R3), beginning seed (R5) or harvest stage. The concentration of ureide inthe upper most fully-expanded leaf was not significantly affected by elevated [CO2] at any growth stage.Elevated [CO2] increased P concentration of the above-ground plant parts at the R1 and R5 stages, butdid not affect P concentration at the R3 stage or at harvest. However, K concentration of the above-ground plant parts and root was not affected by elevated [CO2] at any growth stage. At harvest, elevated [CO2] significantly increased N, P and K uptake in soybean seed. Results indicate that more N, P and Kfertilizers may be required to maintain the availability of these elements in the soil for soybean underfuture elevated [CO2] environments.

Statistics for USQ ePrint 28860
Statistics for this ePrint Item
Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Agricultural, Computational and Environmental Sciences
Date Deposited: 04 Jul 2016 03:52
Last Modified: 08 Feb 2018 00:02
Uncontrolled Keywords: free-air carbon dioxide enrichment (FACE); Biomass; N, P, K uptake; soybean
Fields of Research : 05 Environmental Sciences > 0599 Other Environmental Sciences > 059999 Environmental Sciences not elsewhere classified
07 Agricultural and Veterinary Sciences > 0701 Agriculture, Land and Farm Management > 070199 Agriculture, Land and Farm Management not elsewhere classified
Socio-Economic Objective: D Environment > 96 Environment > 9603 Climate and Climate Change > 960399 Climate and Climate Change not elsewhere classified
Identification Number or DOI: 10.1016/j.agrformet.2015.12.061
URI: http://eprints.usq.edu.au/id/eprint/28860

Actions (login required)

View Item Archive Repository Staff Only