The Experimental Farm Groß Enzersdorf is a research and teaching facility of BOKU University of Natural Resources and Life Sciences, Vienna. It was founded in 1902 as a donation to the university by the Austrian emperor; it is a typical arable farm of 140 ha arable fields in Gross-Enzersdorf, Lower Austria. The farm is run in conventional agriculture, but 26 ha are converted to organic farming since more than 20 years. Another 35 ha acreage in Tulln, Lower Austria, plus 6 ha of experimental garden in the city of Vienna, 21. district, are additionally managed by the farm and available for experiments with arable crops, vegetables and fruit species. The experiments include two long-term field experiments that are descibed individually as related plots. These experiments are focussed on long term effects (i) of crop rotation and fertlization since 1906, and (ii) of soil tillage treatments since 1996. The whole farm beyond can be used for any kind of soil, plant or atmosphere observations in experimental settings, representing a typical Pannonian agricultural environment. It is equipped with complete sets of agricultural machinery for large scale farming operation as well as for small experimental plots. On the farm there is also a weather observation station installed by the Austrian Zentralanstalt für Meteorologie und Geodynamik (ZAMG).