Data/hora: 05/06/2024 11:49:28

Provedor de dados: | 21
País: | Germany
Título: | Einfluss von biologischer und konventioneller Bewirtschaftung  auf biologische Bodenqualitätsparameter: Entwicklungen im  DOK Langzeitversuch nach pH-Regulierung
Autores: | Oberholzer, Hans-Rudolf; Fließbach, Andreas; Mäder, Paul; Mayer, Jochen.
Data: | 2009
Ano: | 2009
Palavras-chave: | Soil biology; Soil quality.
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.
Tipo: | Conference paper, poster, etc.
Idioma: | deu

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.

Relação: | http://orgprints.org/14512/
Formato: | application/pdf