E3S Web Conf.
Volume 98, 201916th International Symposium on Water-Rock Interaction (WRI-16) and 13th International Symposium on Applied Isotope Geochemistry (1st IAGC International Conference)
|Number of page(s)||5|
|Section||Applied Isotope Geochemistry|
|Published online||07 June 2019|
Chemical and isotopic characterization of nitrate retained and leached from soil after manure fertilization-by lysimeter experiments
Grup de Mineralogia Aplicada, Geoquímica i Geomicrobiologia, Departament de Mineralogia, Petrologia i Geologia Aplicada, Facultat de Ciències de la Terra, Universitat de Barcelona (UB), Martí i Franquès s/n, 08020, Barcelona, Spain
2 Serra Húnter Fellowship, Generalitat de Catalunya, Spain
3 CREAF, Cerdanyola del Vallès 08193, Spain
4 Universitat Autònoma de Barcelona, Cerdanyola del Vallès 08193, Spain
5 Centro de Investigación en Contaminación Ambiental (CICA), Universidad de Costa Rica (UCR), San José, Costa Rica
* Corresponding author: email@example.com
Increase of soil fertilization produces an increase of N exported to the hydrosphere. The amount of nitrate that reaches the aquifers is controlled by processes affecting N-species within the soils. The most relevant processes are nitrification, denitrification, assimilation, mineralization, and immobilization. This work studies the fate of N compounds in soil after manure application in a lysimeter study. To this end the isotopic composition of N and O of dissolved nitrate (δ15N-NO3- and δ18O-NO3-) was studied coupled with the evolution of N-compounds retained and leached from the soil. Results showed an increase in the δ15N-NO3- of the leached nitrate towards values similar to the δ15N-NH4+ from the applied manure. The highest δ15N-NO3- values were measured after 100 days of manure application, and thereafter, values decreased progressively towards the initial δ15N-NO3- of the soil before manure application.
© The Authors, published by EDP Sciences, 2019
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.