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Differential Utilization of Dissolved Organic and Inorganic Nitrogen by Wheat (Triticum Aestivum L.)

Iqbal, Z. and Khalid, M. and Soleman, N. and Jones, D.L. (2014) Differential Utilization of Dissolved Organic and Inorganic Nitrogen by Wheat (Triticum Aestivum L.). Journal of Plant Nutrition, 37 (13). pp. 2094-2107. DOI: 10.1080/01904167.2014.920369

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Abstract

A study was conducted under greenhouse conditions on wheat to investigate the utilization of dissolved organic nitrogen (N) in comparison with conventionally applied inorganic N sources (INS). Nitrogen was applied at a rate of 90 kg N ha�1 in an inorganic form, an organic high molecular weight (MW) form (casein, haemoglobin, albumin), and an organic low MW amino acid form (glycine, alanine, valine). Inorganic N sources recorded the maximum response (126% to 150%) in total dry matter (DM) production while dissolved organic nitrogen (DON) sources showed 61% to 116% increase in comparison to the control treatment. Glycine gave the maximum DM production, which was comparable with both INS treatments. In hydroponics, greater utilization occurred and the shoots had a higher N content in comparison to those grown in soil. The concentration of DON and NO3� in soil after wheat harvest was similar in all the treatments.

Item Type: Article
Subjects: Research Publications
Departments: College of Natural Sciences > School of Environment, Natural Resources and Geography
Date Deposited: 16 Feb 2015 03:16
Last Modified: 23 Sep 2015 02:55
ISSN: 0190-4167
URI: http://e.bangor.ac.uk/id/eprint/3501
Identification Number: DOI: 10.1080/01904167.2014.920369
Publisher: Taylor & Francis
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