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Received: 19 December 2016 Accepted: 16 August 2017 Published: xx xx xxxx

Tillage and nitrogen fertilization enhanced belowground carbon allocation and plant nitrogen uptake in a semi-arid canola crop– soil system Jharna Rani Sarker1,2, Bhupinder Pal Singh1,2, Xinhua He   2,3, Yunying Fang2, Guangdi D. Li4, Damian Collins2 & Annette L. Cowie   1,5 Carbon (C) and nitrogen (N) allocation and assimilation are coupled processes, likely influencing C accumulation, N use efficiency and plant productivity in agro-ecosystems. However, dynamics and responses of these processes to management practices in semi-arid agro-ecosystems are poorly understood. A field-based 13CO2 and urea-15N pulse labelling experiment was conducted to track how C and N allocation and assimilation during canola growth from flowering to maturity were affected by short-term (2-year) tillage (T) and no-till (NT) with or without 100 kg urea-N ha−1 (T-0, T-100, NT-0, NT100) on a Luvisol in an Australian semi-arid region. The T-100 caused greater (P 

Tillage and nitrogen fertilization enhanced belowground carbon allocation and plant nitrogen uptake in a semi-arid canola crop-soil system.

Carbon (C) and nitrogen (N) allocation and assimilation are coupled processes, likely influencing C accumulation, N use efficiency and plant productiv...
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