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1. Linking microbial immobilization of fertilizer nitrogen to in situ turnover of soil microbial residues in an agro-ecosystem

Author:
Wu, Yeye,   et al.   ; Liu, Xiao; Hu, Guoqing; He, Hongbo; Liang, Chao; Zhang, Wei; Bai, Zhen; Lin, Guifeng; Zhang, Xudong;     Show all 9 Authors
Source:
Agriculture, ecosystems & environment 2016 v.229 pp. 40-47
ISSN:
0167-8809
Subject:
agricultural management; agricultural soils; agroecosystems; amino sugars; biofertilizers; biomarkers; corn; field experimentation; mulching; nitrogen; nitrogen fertilizers
Abstract:
... Understanding long-term microbial immobilization of nitrogen (N) fertilizer is essential for N management in agricultural soils. Evaluating the transformation and accumulation of N fertilizer into microbial residues is critical for developing such an understanding due to the requirement of time-integrated biomarkers and a 15N-labeling technique. By tracing the dynamics of amino sugars derived from ...
DOI:
10.1016/j.agee.2016.05.019

2. Dynamics of fertilizer-derived organic nitrogen fractions in an arable soil during a growing season

Author:
Wu, Yeye,   et al.   ; Lü, Huijie; He, Hongbo; Zhao, Jinsong; Zhang, Wei; Xie, Hongtu; Hu, Guoqing; Liu, Xiao; Zhang, Xudong;     Show all 9 Authors
Source:
Plant and soil 2013 v.373 no.1-2 pp. 595-607
ISSN:
0032-079X
Subject:
agroecosystems; amino acids; amino sugars; ammonium nitrogen; ammonium sulfate; anthropogenic activities; arable soils; biogeochemical cycles; corn; field experimentation; filling period; gas chromatography; growing season; isotope labeling; liquid chromatography; mass spectrometry; nitrogen; nitrogen fertilizers; organic soils; soil-plant interactions; top dressings
Abstract:
... BACKGROUND: Inorganic fertilizer is one of the most important anthropogenic inputs which influences soil nutrient turnover in agricultural ecosystems. However, as the key process involved in the maintenance, transformation and stability of soil nitrogen (N), the incorporation and allocation of fertilizer N between different soil organic N (SON) fractions in a growing season remains largely unknown ...
DOI:
10.1007/s11104-013-1824-8