Policies for agricultural nitrogen management—trends, challenges and prospects for improved efficiency in Denmark by Tommy Dalgaard, Birgitte Hansen, Berit Hasler, Ole Hertel, Nicholas J Hutchings, Brian H Jacobsen, Lars Stoumann Jensen, Brian Kronvang, Jørgen E Olesen, Jan K Schjørring, Ib Sillebak Kristensen, Morten Graversgaard, Mette Termansen, Henrik Vejre

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Impact of amendments on soil organic nitrogen fractions irrigated with sodic water by DEEPIKA RATHI, DEVRAJ DEVRAJ, R S ANTIL, SUNITA SHEORAN

Subjects: “…Amino acid nitrogen…”
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Identification of Low-Nitrogen-Related miRNAs and Their Target Genes in Sugarcane and the Role of <i>miR156</i> in Nitrogen Assimilation by Shiwu Gao, Yingying Yang, Yuting Yang, Xu Zhang, Yachun Su, Jinlong Guo, Youxiong Que, Liping Xu

Subjects: “…low nitrogen…”
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Projected Elevated [CO₂] and Warming Result in Overestimation of SPAD-Based Rice Leaf Nitrogen Status for Nitrogen Management by Ye Tao, Jishuang Zhang, Lian Song, Chuang Cai, Dongming Wang, Wei Wei, Xinyue Gu, Xiong Yang, Chunwu Zhu

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Quantifying the Impact of Reduced Nitrogen Rates on Grain Yield and Nitrogen Use Efficiency in the Wheat and Rice Rotation System of the Yangtze River Region by Muhammad Yousaf Nadeem, Jianwei Zhang, Yan Zhou, Sajjad Ahmad, Yanfeng Ding, Ganghua Li

Subjects: “…nitrogen fertilizer…”
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Magnesium improved fruit quality by regulating photosynthetic nitrogen use efficiency, carbon–nitrogen metabolism, and anthocyanin biosynthesis in ‘Red Fuji’ apple by Ge Tian, Hanhan Qin, Chunling Liu, Yue Xing, Ziquan Feng, Xinxiang Xu, Jingquan Liu, Mengxue Lyu, Han Jiang, Zhanling Zhu, Yuanmao Jiang, Shunfeng Ge

“…IntroductionBoth nitrogen (N) and magnesium (Mg) play important roles in biochemical and physiological processes in plants. …”
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A microbial ecosystem enhanced by regulating soil carbon and nitrogen balance using biochar and nitrogen fertiliser five years after application by Fanhao Meng, Hengshan Yang, Xiuyan Fan, Xin Gao, Jicheng Tai, Rula Sa, Xuanliang Ge, Xuezhen Yang, Qingyi Liu

“…Abstract The indiscriminate use of nitrogen fertiliser (NF) is a obstruction to improve soil quality and crop yields. …”
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Differential effects of nitrate and ammonium on the growth of algae and microcystin production by nitrogen-fixing Nostoc sp. and non-nitrogen-fixing Microcystis aeruginosa by Ning Yang, Zipeng Li, Zhengyu Wu, Xianhua Liu, Yiyan Zhang, Tao Sun, Xuejun Wang, Yingxin Zhao, Yindong Tong

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The Root-Colonizing Endophyte <i>Piriformospora indica</i> Supports Nitrogen-Starved <i>Arabidopsis thaliana</i> Seedlings with Nitrogen Metabolites by Sandra S. Scholz, Emanuel Barth, Gilles Clément, Anne Marmagne, Jutta Ludwig-Müller, Hitoshi Sakakibara, Takatoshi Kiba, Jesús Vicente-Carbajosa, Stephan Pollmann, Anne Krapp, Ralf Oelmüller

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Effects of arbuscular mycorrhizal fungus inoculation on the growth and nitrogen metabolism of Catalpa bungei C.A.Mey. under different nitrogen levels by Wei Chen, Xueli Mou, Panpan Meng, Juan Chen, Xiaan Tang, Guihua Meng, Kexu Xin, Yi Zhang, Chunyan Wang

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Grazing and Mowing Affect the Carbon-to-Nitrogen Ratio of Plants by Changing the Soil Available Nitrogen Content and Soil Moisture on the Meadow Steppe, China by Le Wang, Hengkang Xu, Hao Zhang, Yingjun Zhang

“…Mowing reduced the concentration of soil NH₄⁺, thus reducing the nitrogen concentration of the roots, resulting in a decrease in the root C/N ratio of <i>Potentilla bifurca</i>. …”
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Effects of Partial Replacement of Nitrogen Fertilizer with Organic Fertilizer on Rice Growth, Nitrogen Utilization Efficiency and Soil Properties in the Yangtze River Basin by Jiabao Wang, Xiangming Zhang, Manman Yuan, Gang Wu, Yixiang Sun

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Correction: Engineering Pseudomonas protegens Pf-5 for Nitrogen Fixation and its Application to Improve Plant Growth under Nitrogen-Deficient Conditions

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Comparative Transcriptomics of Rice Genotypes with Contrasting Responses to Nitrogen Stress Reveals Genes Influencing Nitrogen Uptake through the Regulation of Root Architecture by Prasanta K. Subudhi, Richard S. Garcia, Sapphire Coronejo, Ronald Tapia

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Corrigendum: Effect of endophytic diazotroph Enterobacter roggenkampii ED5 on nitrogen-metabolism-related microecology in the sugarcane rhizosphere at different nitrogen levels by Dao-Jun Guo, Dao-Jun Guo, Dong-Ping Li, Bin Yang, Krishan K. Verma, Rajesh Kumar Singh, Pratiksha Singh, Qaisar Khan, Anjney Sharma, Ying Qin, Bao-Qing Zhang, Xiu-Peng Song, Yang-Rui Li

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Transcriptome Analysis Reveals Different Responsive Patterns to Nitrogen Deficiency in Two Wheat Near-Isogenic Lines Contrasting for Nitrogen Use Efficiency by Xinbo Zhang, Quan Ma, Fujian Li, Yonggang Ding, Yuan Yi, Min Zhu, Jinfeng Ding, Chunyan Li, Wenshan Guo, Xinkai Zhu

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Responses of Seed Yield and Quality to Nitrogen Application Levels in Two Oilseed Rape (Brassica napus L.) Varieties Differing in Nitrogen Efficiency by Zhen-hua Zhang, Hai-xing Song, Qiang Liu, Xiang-min Rong, Jian-wei Peng, Gui-xian Xie, Yu-ping Zhang, Li-ru Chen, Chun-yun Guan, Ji-dong Gu

Subjects: “…Nitrogen efficiency…”
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Identification of QTL Associated with Nitrogen Uptake and Nitrogen Use Efficiency Using High Throughput Genotyped CSSLs in Rice (Oryza sativa L.) by Yong Zhou, Yajun Tao, Dongnan Tang, Jun Wang, Jun Zhong, Yi Wang, Qiumei Yuan, Xiaofeng Yu, Yan Zhang, Yulong Wang, Guohua Liang, Guichun Dong

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Optimizing Agronomy Improves Super Hybrid Rice Yield and Nitrogen Use Efficiency through Enhanced Post-Heading Carbon and Nitrogen Metabolism by Jun Deng, Jiayu Ye, Ke Liu, Matthew Tom Harrison, Xuefen Zhong, Chunhu Wang, Xiaohai Tian, Liying Huang, Yunbo Zhang

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Strong correspondence between nitrogen isotope composition of foliage and chlorin across a rainfall gradient: implications for paleo-reconstruction of the nitrogen cycle by S. K. E. Goulden, N. Ohkouchi, K. H. Freeman, Y. Chikaraishi, N. O. Ogawa, H. Suga, O. Chadwick, B. Z. Houlton

“…<p>Nitrogen (N) availability influences patterns of terrestrial productivity and global carbon cycling, imparting strong but poorly resolved feedbacks on Earth's climate system. …”
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