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Start Over Descriptor "15N" Publisher springer netherlands
141 results on '"15N"'

8. Nitrogen Rhizodeposition of Legumes

Author

Fustec, Joëlle, Lesuffleur, Fabien, Mahieu, Stéphanie, Cliquet, Jean-Bernard, Lichtfouse, Eric, editor, Hamelin, Marjolaine, editor, Navarrete, Mireille, editor, and Debaeke, Philippe, editor

Published
2011
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9. Improving nitrogen use efficiency in irrigated cotton production

Author

Scheer, Clemens, Rowlings, David W., Antille, Diogenes L., De Antoni Migliorati, Massimiliano, Fuchs, Kathrin, Grace, Peter R., Scheer, Clemens, Rowlings, David W., Antille, Diogenes L., De Antoni Migliorati, Massimiliano, Fuchs, Kathrin, and Grace, Peter R.

Abstract

Irrigated cotton in Australia is mainly grown on heavy textured soils which are prone to waterlogging, resulting in significant losses of nitrogen (N) via denitrification and surface run-off. This study investigated fertiliser nitrogen use efficiency (fNUE) over three seasons on five commercial cotton farms using the 15N tracer technique. Fertiliser NUE was consistently low across all fertilised treatments, with on average 47% of the applied fertiliser lost and only 17% of the N taken up by the crop derived from fertiliser. There was no significant effect of different N fertiliser products and rates on cotton lint yield. High lint yields (0.9–3.6 Mg ha−1) could be achieved even without the application of N fertiliser, demonstrating mineralisation of soil organic N, residual fertiliser, or N returned with crop residues, as key source of N in these cropping systems. Using the nitrification inhibitor DMPP and overhead instead of furrow irrigation showed potential to reduce N fertiliser losses. The results demonstrate that under current on-farm management fNUE is low on irrigated cotton farms in Australia and highlight the need to account for soil N stocks and mineralisation rates when assessing optimized fertiliser rates. There is substantial scope to improve fNUE and reduce N losses without any impact on lint yield, by adjusting N fertiliser application rates, in particular in combination with the use of the nitrification inhibitor DMPP. Using overhead instead of furrow irrigation is a promising approach to improve not only water use efficiency, but also fNUE in irrigated cotton systems.

Published
2022

50. Relationship between oxalate synthesis and nitrate reduction in spinach (Spinacia oleracea L.) plants tracing by 13C and 15N

Author

Tanaka, F., Kim, T. H., Yoneyama, T., Horst, W. J., editor, Schenk, M. K., editor, Bürkert, A., editor, Claassen, N., editor, Flessa, H., editor, Frommer, W. B., editor, Goldbach, H., editor, Olfs, H. -W., editor, Römheld, V., editor, Sattelmacher, B., editor, Schmidhalter, U., editor, Schubert, S., editor, v. Wirén, N., editor, and Wittenmayer, L., editor

Published
2001
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