Soil warming and liming impacts on the recovery of 15N in an acidic soil under soybean cropping

Ahmad, Waqar, Dijkstra, Feike A., Dalal, Ram C. and Singh, Balwant (2016) Soil warming and liming impacts on the recovery of 15N in an acidic soil under soybean cropping. Journal of Plant Nutrition and Soil Science, 179 2: 193-197. doi:10.1002/jpln.201500378


Author Ahmad, Waqar
Dijkstra, Feike A.
Dalal, Ram C.
Singh, Balwant
Title Soil warming and liming impacts on the recovery of 15N in an acidic soil under soybean cropping
Formatted title
Soil warming and liming impacts on the recovery of 15N in an acidic soil under soybean cropping
Journal name Journal of Plant Nutrition and Soil Science   Check publisher's open access policy
ISSN 1522-2624
1436-8730
Publication date 2016-04-01
Year available 2016
Sub-type Article (original research)
DOI 10.1002/jpln.201500378
Open Access Status Not Open Access
Volume 179
Issue 2
Start page 193
End page 197
Total pages 5
Place of publication Weinheim, Germany
Publisher Wiley - V C H Verlag GmbH & Co. KGaA
Language eng
Formatted abstract
Liming has important implications for N dynamics in acidic soils planted with legumes that are not fully understood. We used a 15N tracer (K15NO3) to examine N dynamics in a Chromic Luvisol planted with soybean with and without lime in environmentally-controlled chambers set at 20°C and 30°C (full factorial design). Liming increased total N and 15N recovery in soybean, but had no effect on microbial recovery. Elevated temperature, increased total plant N, decreased 15N recovery in soybean and microbes, and increased loss of N through leaching. Our results show enhanced uptake of soil mineral N by soybean with liming, thereby reducing N loss from soil, while an increase in temperature from 20°C to 30°C may enhance N loss in these systems.
Keyword 15N tracer
Acidic soil
Liming
Organic and inorganic N dynamics
Soybean
Temperature
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
School of Agriculture and Food Sciences
 
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