Fertilizer 15N balance in a soybean–maize–maize rotation system based on a 41-year long-term experiment in Northeast China [PDF]
Frontiers in Plant Science, 2023 Global awareness of the need to enhance crop production and reduce environmental issues associated with nitrogen (N) fertilizer has increased. However, studies on how the N fate changed with manure addition are still limited.
Jian Dai +17 more
doaj +4 more sources
Synergistic regulation mechanism of N in sugarcane-soil systems through 15N tracer and ecological stoichiometry [PDF]
Frontiers in Plant ScienceSugarcane is a vital sugar crop in China. Low nitrogen use efficiency (NUE) is a key constraint to the sustainable development of the industry. To comprehensively evaluate the regulatory effects of N management on the sugarcane-soil system and its ...
Ning Zhong +4 more
doaj +2 more sources
Fertilizer 15N balance in a coffee cropping system: a case study in Brazil [PDF]
Revista Brasileira De Ciencia Do Solo, 2008 Knowledge about the fate of fertilizer nitrogen in agricultural systems is essential for the improvement of management practices in order to maximize nitrogen (N) recovery by the crop and reduce N losses from the system to a minimum. This study involves fertilizer management practices using the 15N isotope label applied in a single rate to determine ...
Klaus Reichardt +2 more
exaly +4 more sources
Revista Brasileira de Ciência do Solo, 2008 Knowledge about the fate of fertilizer nitrogen in agricultural systems is essential for the improvement of management practices in order to maximize nitrogen (N) recovery by the crop and reduce N losses from the system to a minimum.
Tatiele Anete Bergamo Fenilli +5 more
doaj +2 more sources
Simple procedure for simultaneous recovery of dissolved inorganic and organic nitrogen in 15N-tracer experiments and improving the isotopic mass balance [PDF]
Marine Ecology - Progress Series, 1995 We developed a simple and reliable method which allows silnultaneous isotope-ratio analysis of inorganic (DIN) and organic (DON) forms of nitrogen extracted from seawater. All forms of nitrogen under analysis are converted to ammonium, by diffusion with magnesium oxide, prior to collection on glass-fiber filters appropriate for mass spectrometric assay
P Raimbault, Raimbault P
exaly +2 more sources
Nitrogen input, 15N balance and mineral N dynamics in a rice–wheat rotation in southwest China
Nutrient Cycling in Agroecosystems, 2007 A field experiment and farm survey were conducted to test nitrogen (N) inputs, 15N-labelled fertilizer balance and mineral N dynamics of a rice–wheat rotation in southwest China. Total N input in one rice–wheat cycle averaged about 448 kg N ha−1, of which inorganic fertilizer accounted for 63% of the total.
Fusuo Zhang +2 more
exaly +2 more sources
Incorporation of microbially salvaged urea-nitrogen into anabolic amino acids during hibernation in arctic ground squirrels [PDF]
Communications BiologyHibernators rely on endogenous supplies of amino acids (AAs) and other nutrients to sustain organ function and skeletal muscle mass. Gut microbiota-mediated recycling of urea-nitrogen into AAs has long been considered a mechanism to assist in conserving ...
Sarah A. Rice +6 more
doaj +2 more sources
Environmental balance of 15n‐labelled fertilizer nitrogen applied to winter wheat in spring
Archives of Agronomy and Soil Science, 1994 Model field experiments were carried out on orthic Luvisols soil in the years 1987, 1988 and 1989, in which winter wheat was fertilized with 15N‐ammonium nitrate in spring. Nitrogen was applied three times at rates of 40 kg N per ha at the beginning of vegetative growth, shooting and heading.
Hana Mouchova, Hans Lippold
exaly +2 more sources
Fertilizer circulation and nitrogen balance in the agrophytocenosis of sugar beet when acidizing typical chernozem (study with 15n) [PDF]
BIO Web of Conferences, 2021 The studies were carried out under the conditions of a microfield experiment on typical chernozem (Belgorod region) with two soils (pH 5.0 and 6.5) with the addition of urea (enriched in 15N, 17.1 at. %) And effluents from a pig-breeding complex (PSC) at
Avilov A.S. +3 more
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Balance de trés fertilizantes nitrogenados 15N en un Oxisol cubano culfivado con Coffea arabica L [PDF]
Tropicultura, 1997 A field trial was carried out on Cuban Oxisol planted with coffee trees, (Coffea arabica L.) using three N-fertilizer sources (15NH4N03, (15NH2) 2CO and K15N03) under Pinus cubensis Griceb shade to estimate the N-balance in plant - soil - fertilizer ...
Bustamante, C. +2 more
doaj +1 more source