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Qiu Jin, Junjian You, Meixiang Xie, Yaliu Qiu, Shaohua Lei, Qian Ding and Jingnan Chen
Nitrogen losses under different irrigation modes have been evaluated by many studies, yet it is not very clear whether the lost N sources are from the soil or fertilizer. In order to quantitatively investigate the effects of different irrigation modes on...
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Jian Han, Li Xing, Chuang Zhang, Jundi Li, Yannan Li, Yuming Zhang, Hongbo He, Chunsheng Hu, Xiaoxin Li, Lijuan Zhang, Wenxu Dong, Shuping Qin and Xiuping Liu
Microbial residue nitrogen can indicate soil quality and is crucial for soil nitrogen retention and supply. However, it is still unclear how the dynamic changes in soil microbial residue nitrogen affect crop nitrogen uptake in agricultural practice. Base...
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Hongliang Wu, Luming Wang, Xiuping Liu, Qiang Li, Changai Lu and Wenxu Dong
Appropriate deep application of fertilizer is the key basis for improving nitrogen use efficiency (NUE). However, the effects of different deep application methods and fertilizer types on nutrient migration, NUE and biomass in wheat season are unclear. T...
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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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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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Balázs Grosz, Björn Kemmann, Stefan Burkart, Søren O. Petersen and Reinhard Well
The prediction of liquid manure effects on N transformations in soils and the associated N2O and N2 fluxes is poor because previous investigations have mostly excluded N2. The objectives of this study were thus to quantify N2, N2O and CO2 fluxes, the sou...
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Elissavet Dotsika, Maria Tassi, Petros Karalis, Anastasia Chrysostomou, Dimitra Ermioni Michael, Anastasia Elektra Poutouki, Katerina Theodorakopoulou and Georgios Diamantopoulos
In this article we present an isotopic analysis of human bone collagen (d13Ccol, and d15Ncol) and bone apatite (d13C) for diet reconstruction, as well as d18Oap of human bone apatite for climate reconstruction, using samples from Northern Greece. Radioca...
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Ying Ding, Siyu Zhu, Run Pan, Jiangping Bu, Yong Liu and Aifang Ding
The application of biochar can affect soil properties and retention of fertilizer nitrogen, but its effects and mechanism on the retention capacity of different forms of nitrogen in soils are still uncertain. In this study, an indoor soil column leaching...
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Isabelle Quilleré, Céline Dargel-Graffin, Peter J. Lea and Bertrand Hirel
The impact of nitrogen (N)-limiting conditions after silking on kernel yield (KY)-related traits and whole plant N management was investigated using fifteen maize lines representative of plant genetic diversity in Europe and America. A large level of gen...
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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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Fumiaki Takakai, Seiya Hirano, Yuka Harakawa, Keiko Hatakeyama, Kentaro Yasuda, Takashi Sato, Kazuhiko Kimura and Yoshihiro Kaneta
A field experiment was conducted to evaluate the fate of nitrogen (N) derived from fertilizer (fertilizer-derived N) applied to a paddy field after rice harvesting to promote rice straw decomposition during the fallow season, and to determine its effect ...
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Harsha S. Fowdar, Ana Deletic, Belinda E. Hatt and Perran L. M. Cook
Nitrogen is a pollutant of great concern when present in excess in surface waters. Living wall biofiltration systems that employ ornamentals and climbing plants are an emerging green technology that has recently demonstrated significant potential to redu...
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F. Virginia Pérez-Castillo, M. Catalina Alfaro-De la Torre, Rebeca Y. Pérez-Rodriguez, Francisco A. Comín Sebastián
Pág. 22 - 29
In this study, we estimated the depth profiles of nutrients in the natural wetland ?Ciénega Tamasopo? (Central Mexico) located in the Neotropic region. The concentration profiles of Corg, NT, Corg/NT ratios and isotopic composition (d13C, d15N) were dete...
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Rodinei Facco Pegoraro,Ivo Ribeiro da Silva,Roberto Ferreira de Novais,Nairam Felix de Barros,Reinaldo Bertola Cantarutti,Sebastião Fonseca
Pág. 295 - 305
http://dx.doi.org/10.5902/1980509821121O nitrogênio e um dos nutrientes mais demandados pelas espécies vegetais, sua presença no solo, sob formas orgânicas ou minerais disponíveis para as plantas, está vinculada à qualidade e quantidade dos resíduos vege...
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Marlene Ayala, Pilar Bañados, Mariana Thielemann, Román Toro
Pág. 71 - 80
In sweet cherries, accumulated nitrogen (N) stores from the previous fall support early spring growth. To complement the N supply in the soil, Chilean growers use foliar urea applications after harvest. Information on the effectiveness of foliar N applic...
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Mariela A. Yevenes, Karline Soetaert and Chris M. Mannaerts
Pág. 1 - 18
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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Mariela A. Yevenes, Karline Soetaert and Chris M. Mannaerts
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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Abid Khogali, Peter Birkle, Abdulaziz Al-Shaibani, Martin Keller, Bassam Tawabini and Mohammad Makkawi
Nitrate (NO3-) represents one of the major groundwater constituents with increasing distribution and concentration in the Kingdom of Saudi Arabia. This study aimed to determine potential sources of nitrate in the Early to Late Cretaceous Wasia aquifer sy...
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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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Jay E. Raymond, Thomas R. Fox and Brian D. Strahm
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