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Reduzierte Bodenbearbeitung reichert Humus und mikrobielle Biomasse oberflächlich an

Fließbach, Andreas; Krauss, Maike; Maurer, C.; Dierauer, Hansueli and Mäder, Paul (2017) Reduzierte Bodenbearbeitung reichert Humus und mikrobielle Biomasse oberflächlich an. Paper at: 14. Wissenschaftstagung Ökologischer Landbau, Campus Weihenstephan, Freising-Weihenstephan, 07.-10. März 2017.

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Summary

When residues and organic fertilizers are not incorporated into the soil, they build a top soil layer that is enriched in soil organic matter. This is leading to a soil layer with
increased biological activity, while the soil layers below, receive less inputs in form of residues or manures and show a reduction in soil organic matter and biological activity. Soils from a replicated field trial and two on-farm trials were analysed for biological soil quality 6 years after the implementation of reduced tillage (RT) as compared to plough. Whilst crop yields were slightly lower with RT, weed cover was increasing, but not to a level that would compromise yields. Soils under RT accumulated soil organic matter in the tilled top layer of 0-10 cm, while in the layer below either no change or a decrease as compared to the plough system was found. The same was true for microbial biomass, but the difference between RT and plough became more pronounced. Dehydrogenase activity was found to react most to the tillage induced changes. Accumulated soil organic matter, living and active organisms at the soil surface render soils more resistant to the weather impact.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:soil tillage, soil quality, soil biology, reduzierte Bodenbearbeitung, Humus, mikrobielle Biomasse
Subjects: Soil > Soil quality
Soil > Soil quality > Soil biology
Soil
Research affiliation: European Union > CORE Organic Plus > FertilCrop
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland
International Conferences > 2017: Scientific Conference German Speaking Countries > Soil fertility
Switzerland > Other organizations
ISBN:978-3-89574-925-4
Deposited By: Hasreiter, Anna
ID Code:31809
Deposited On:04 Jul 2017 17:23
Last Modified:28 Sep 2017 09:54
Document Language:German/Deutsch
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:Dieser Beitrag ist im Tagungsband der 14. Wissenschaftstagung erschienen.
S. Wolfrum, H. Heuwinkel, H.J. Reents, u.a. (Hrsg.) (2017): Ökologischen Landbau weiterdenken - Verantwortung übernehmen - Vertrauen stärken. Beiträge der 14. Wissenschaftstagung Ökologischer Landbau, Freising-Weihenstephan, 7.-10. März 2017
Verlag Dr. Köster, Berlin

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