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Tong Heng, Yingjie Ma, Pengrui Ai, Zhenyue Liu, Miao Wu and Changjiang Liu
Soil salinity is a major soil threat, causing severe environmental problems. Soil salt stress limits N uptake and cotton growth, especially in arid regions. However, the mechanism underlying stress tolerance in cotton plants under different soil salinity...
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Tetsuya Endo, Osamu Kimura, Masaru Terasaki, Yoshihisa Kato, Yukiko Fujii and Koichi Haraguchi
The changes in the stable isotope ratios of carbon (d13C), nitrogen (d15N), oxygen (d18O), and mercury (Hg) concentrations in muscle and liver tissues during and after lactation were studied in killer whales stranded along the coast of Hokkaido, in the n...
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Elzbieta Radzka, Katarzyna Rymuza and Andrzej Wysokinski
This study aimed to determine the influence of weather conditions (air temperature, precipitation and insolation) on the quantity of nitrogen taken up by soybean plants whose cultivation included an application of two biostimulants: Asahi and Improver, w...
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Karin S. Levin, Felizitas Winkhart, Kurt-Jürgen Hülsbergen, Hans Jürgen Reents and Karl Auerswald
Agricultural ammonia (NH3) emissions can have serious environmental impacts, lower fertiliser nitrogen-use efficiencies, and cause economic losses. NH3 losses may not only occur directly from organic fertilisers such as biogas digestates when applied to ...
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Yayuan Li, Shimin Lu, Wang Zhang, Xingguo Liu, Haixin Jiang, Chong Liu and Zehui Yuan
During the process of circulating aquaculture, high concentrations of nitrate will accumulate. A simultaneous denitrification and fermentation process is described to remove nitrate from a recirculating aquaculture system using endogenous carbon on a bio...
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Rebecca Hood-Nowotny, Andrea Watzinger, Anna Wawra and Gerhard Soja
Field studies of biochar addition to soil and nutrient cycling using 15N fertilizers in temperate agriculture are scant. These data are required in order to make evidence based assessments. This study was conducted to test the hypothesis that biochar app...
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Chiara Sbarbati, Nicolò Colombani, Micòl Mastrocicco, Marco Petitta and Ramon Aravena
A comprehensive hydrochemical, stable isotope and microbial analyses characterisation has been performed to evaluate the sources of groundwater, nitrogen pollution and degradation processes occurring in an industrial polluted coastal aquifer in the frame...
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Tchister Morrel EBISSA, Bo Yang, Yuanqing Guan, Bingchang Tan, Peizhen Chen, Lili Wang, Richard Odongo Magwanga and Xiangqun Zheng
A field experiment was conducted in Ninghe, Tianjin, China, using the 15N isotope method to determine the fate of N sources, application effect of organic fertilizer on the growth of rice plant organs, N uptake by rice, and N use efficiency. The experime...
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Mariela A. Yevenes, Karline Soetaert and Chris M. Mannaerts
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The identification of nitrate-nitrogen (NO3?N) origin is important in the control of surface and ground water quality. These are the main sources of available drinking water. Stable isotopes (15N and 18O) for NO3?N and along with a 1-D reactive transport...
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Yanpeng Zhang, Aiguo Zhou, Jianwei Zhou, Cunfu Liu, Hesheng Cai, Yunde Liu and Wen Xu
The identification of the sources and fate of
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contaminants is important to protect the water quality of aquifer systems. In this study,
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contaminated groundwater from the drinking water wells in the Shijiazhuang area, China...
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