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Murer E.,Institute For Kulturtechnik Und Bodenwasserhaushalt | Sisak I.,University of Pannonia | Baumgarten A.,Osterreichische Agentur fur Gesundheit und Erna hrungswissenschaften GmbH | Strauss P.,Institute For Kulturtechnik Und Bodenwasserhaushalt
Bodenkultur | Year: 2012

The objective of this study was to assess the subsoil compaction in the Austrian region of Alpenvorland. According to data provided by the Austrian Soil Mapping, the precompression stress value was estimated. At 30 representative sites with management-influenced compaction and long-term participation in the agro-environmental program ÖPUL, soil structure was assessed (good, poor, critical) according to the threshold values of air capacity and saturated hydraulic conductivity. Beneath the plough layer, the subsoil is in critical condition at approximately 30% and in poor condition at 25% of the investigated sites. Statistical analysis showed a significant increase of penetration resistance and subsoil compaction on headland as compared to other parts of the investigated fields. This study confirms the wide range of penetration resistance variability and its dependence on the water and clay content. Without precise knowledge of these frame conditions, penetration resistance should therefore be regarded as less meaningful. Source

Hosl R.,Institute For Kulturtechnik Und Bodenwasserhaushalt | Strauss P.,Institute For Kulturtechnik Und Bodenwasserhaushalt | Murer E.,Institute For Kulturtechnik Und Bodenwasserhaushalt | Eder A.,Institute For Kulturtechnik Und Bodenwasserhaushalt | And 2 more authors.
Bodenkultur | Year: 2014

Four different slurry application techniques (drag shoe = SH, drag hose = SC, chisel injector = D and deflector plate = PT) and one control plot (N = zero slurry) were tested on grassland within the catchment of lake Waging-Taching in order to investigate phosphorus losses into tile drains. Slurry (20 m 3.ha-1) was applied onto the grassland directly above tile drains. Then rainfall simulations were carried out, discharge from the tile drains was collected and analysed for phosphorus concentration (total P) and sediment concentration. The relation between sediment concentration and P concentration was almost linear for all tested slurry application techniques and P concentrations did not vary significantly within the tested variants (p > 0.05). However by pooling the near ground application techniques (SC, SH and D) a significant difference compared to PT could be shown (p = 0.03). Source

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