Update: 08.12.2017

Five tonnes of animal life can live in one hectare of soil.

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The International Union of Soil Sciences (IUSS) is the global union of soil scientists. The objectives of the IUSS are to promote all branches of soil science, and to support all soil scientists across the world in the pursuit of their activities. This website provides information for IUSS members and those interested in soil science.

28th to 30th May 2007, Lleida (Spain)

The 15th N Workshop www.nitrogen15workshop.udl.es/nitrogen/html/introduction.html ) organised by the RUENA (Spanish Network for the Efficient Use of Nitrogen in Agriculture) and the Department of Environment and Soil Sciences of the University of Lleida (DMACS-UdL), as well as by the Fundaci Universitat de Lleida (logistics) was held in Lleida (Catalonia, Spain) from the 28th to the 30th May 2007. The participants (210 people, see picture) came from UK, The Netherlads, Italy, France, Belgium, Germany, Switzerland, Greece, Canada, USA, Norway, Latvia, Poland, Portugal, Tunisia, Japan, Australia, and New Zealand among others.

Most of the participants in the 15th N Workshop, Lleida (Spain)

Most of the participants in the 15th N Workshop, Lleida (Spain)

This has been the 15th edition of the nitrogen workshops and the 25th year of its celebration. This was, therefore, the of century of nitrogen workshops anniversary. On this occasion homage was rendered to Dr. Scholefield (IGER, UK) because of having fostered the N workshops through these 25 years and having attended all of them as well as because of his retirement in the near future.

The workshop started with an opening session on Nitrogen research evolution through N workshops by Dr. J.J. Neeteson. There were other two plenary invited speeches on Approaches to N management in order to improve N-use efficiency by Dr. G. Lemaire, N flows in agricultural systems, grassland and forest systems by Dr. Claudio O. Stockle, and several other plenary oral presentations on the Approaches to N management in order to improve N use efficiency, the N flow in agricultural systems, grassland and forest systems and on the External constrains for nitrogen fertilization.

Three very interesting parallel technical field trips took place to dryland, irrigated and mixed agricultural systems respectively. The field experiments being performed by the local team of researchers were shown and discussed. These trips also included other visits to introduce into the main characteristics of the Ebro valley agricultural systems to the participants. The working groups were also successful, mainly because the convenors did a very good job, before and during the workshop. The 16th N Workshop will be held in Italy. See you there!