| Registro completo |
| Provedor de dados: |
Organic Eprints
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| País: |
Germany
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| Título: |
Einfluss von biologischer und konventioneller Bewirtschaftung auf biologische Bodenqualitätsparameter: Entwicklungen im DOK Langzeitversuch nach pH-Regulierung
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| Autores: |
Oberholzer, Hans-Rudolf
Fließbach, Andreas
Mäder, Paul
Mayer, Jochen
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| Data: |
2009
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| Ano: |
2009
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| Palavras-chave: |
Soil biology
Soil quality
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| Resumo: |
In the long-term DOK field trial at Therwil, Switzerland, agricultural farming systems are compared since 1978: CONFYM (mineral and organic fertilisers, synthetic pesticides), BIOORG (organic fertilisers, mechanical weeding and biological disease and pest control) and BIODYN (with composted manure and bio-dynamic preparations), all of them at two fertiliser intensities of 0.7 and 1.4 livestock units per ha, respectively. They are compared with CONMIN (conventionally managed, exclusively minerally fertilised) and NOFERT (unfertilised control). CONFYM and CONMIN were limed with 2.7 t CaCO3 ha-1 in 1999, CONMIN with additional 2 t CaCO3 ha-1 in 2005, since pH values had dropped below officially recommended values. In spring of 1998 and 2006 soil samples from 0 to 20 cm depth were analysed for soil microbial biomass (substrate induced respiration SIR and chloroform fumigation extraction CFE), soil respiration and dehydrogenase activity. NOFERT and CONMIN exhibited the lowest microbial soil properties Manure application influenced most soil microbial parameters positively. Differences between treatments in soil microbial parameters were smaller in 2006 than in 1998 due to pH regulation. Only CFE and dehydrogenase activity were higher in BIODYN than in BIOORG and CONFYM in 2006. For physiological methods SIR and soil respiration, no differences between these three systems were measured. Because of liming, manure use, a wide ley rotation and equal plant residue management no more differences between BIOORG and CONFYM, representing the predominant farming systems in Switzerland were observed for all soil microbial properties.
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| Tipo: |
Conference paper, poster, etc.
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| Idioma: |
deu
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| Identificador: |
http://orgprints.org/14512/1/Oberholzer_14512.pdf
Oberholzer, Hans-Rudolf; Fließbach, Andreas; Mäder, Paul and Mayer, Jochen (2009) Einfluss von biologischer und konventioneller Bewirtschaftung auf biologische Bodenqualitätsparameter: Entwicklungen im DOK Langzeitversuch nach pH-Regulierung. Paper at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.
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| Relação: |
http://orgprints.org/14512/
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| Formato: |
application/pdf
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