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Title: Nitrogen use efficiency evaluation of aerobic rice under field capacity water potential using {sup 15}N isotopic tracer technique

This study was carried out to evaluate the efficiency use of the nitrogen fertilizer on aerobic rice varieties MR219-4 and MR219-9 which were grown aerobically under field capacity water potential at the controlled environment area or shield house. Direct {sup 15}N isotope tracer method was used in this study, whereby the {sup 15}N isotope was utilized as a tracer for nitrogen nutrient uptake. {sup 15}N isotope presence in the samples is determined by using emission spectrometer analysis and percentage of total nitrogen is determined by using Kjeldahl method. {sup 15}N atom access value contained in the sample will be used in determining the effectiveness of the use of nitrogen in fertilizers through the specific calculation formulas. In this work, the data several data of nitrogen derived from fertilizer (Ndff), total nitrogen, nitrogen uptake and nitrogen use efficiency was obtained.
Authors:
 [1] ;  [2] ;  [1] ; ;  [3]
  1. Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor (Malaysia)
  2. (Malaysia)
  3. Malaysian Nuclear Agency, Bangi, 43000 Kajang, Selangor (Malaysia)
Publication Date:
OSTI Identifier:
22488962
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1678; Journal Issue: 1; Conference: Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2015 Postgraduate Colloquium, Selangor (Malaysia), 15-16 Apr 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ATOMS; CAPACITY; EFFICIENCY; EMISSION SPECTROSCOPY; ENVIRONMENT; EVALUATION; FERTILIZERS; KJELDAHL METHOD; NITROGEN; NITROGEN 15; NUTRIENTS; RICE; TRACER TECHNIQUES; UPTAKE; WATER