http://orgprints.org/3821/ Mineralstickstoffgehalt im Boden in einem ökologischen und einem konventionellen Pflanzenproduktionssystem An ecological five-year rotation of potato - spring barley with undersown grass clover – grass clover – grass clover – winter wheat with cover crop and a conventional three-year rotation of winter rape – winter wheat – spring barley systems were compared for soil mineral nitrogen content in 0-90cm from 2000-2003. The research was conducted on a field trial located at the Experimental Station in Osiny (Lublin province, Poland) on grey brown podzolic soil. In the ecological rotation, mineral nitrogen contents increased over time while in the conventional system the contents were the same after three years. However, depending on the crop and year there were large losses. The largest potential for Nmin losses was observed after grass clover in the ecological, and after rape in the conventional system. Jonczyk, Krzysztof Igras, Janusz 4nutrient 3compost wissenschaftstagung-2005 Mineralstickstoffgehalt im Boden in einem ökologischen und einem konventionellen Pflanzenproduktionssystem 2005-03-05 Jonczyk, Krzysztof and Igras, Janusz (2005) Mineralstickstoffgehalt im Boden in einem ökologischen und einem konventionellen Pflanzenproduktionssystem. [Soil mineral nitrogen contents in an ecological and a conventional crop production system.] 8. Wissenschaftstagung Ökologischer Landbau - Ende der Nische, Kassel, 01.03.2005 - 04.03.2005. In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel. Heß, J Rahmann, G application/pdf