3307: Oekologischer Ackerbauversuch Gladbacherhof - Effekte von Fruchtfolge und Bodenbearbeitung in der ersten Rotation [Organic farming trial Gladbacherhof - effects of crop rotation and soil tillage in the first rotation]

Schmidt, Harald and Leithold, Günter (2005) Oekologischer Ackerbauversuch Gladbacherhof - Effekte von Fruchtfolge und Bodenbearbeitung in der ersten Rotation [Organic farming trial Gladbacherhof - effects of crop rotation and soil tillage in the first rotation]. Paper presented at 8. Wissenschaftstagung Ökologischer Landbau – Ende der Nische, Kassel, 01.03.2005 - 04.03.2005; Published in Heß, J and Rahmann, G, Eds. Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau. kassel university press GmbH, Kassel.

Summary

In a long term trial at the University of Giessen three organic crop rotation systems with and without livestock and four soil tillage treatments (deep plough, 2 x two layer plough and cultivator/rotary harrow) are investigated since 1998. Compared to the other two rotations the stockless rotation without annual green manure showed lower cash crop yields, a negative N-balance and rising weed coverage. The highest cash crop yields were mostly achieved with deep ploughing. Two layer tillage caused N and C accumulation in the upper soil layer (0-15 cm). The weed coverage was highest in these treatments. Especially exclusive tillage with cultivator/rotary harrow resulted in a distinct increase of thistles and high coverage with annual weeds.

Archive Staff Only: edit this record