Physical properties of a Luvisol for different long-term fertilization treatments: I. Mesoscale capacity and intensity parameters.

Holthusen, D., Janicke, M., Peth, S. and Horn, Rainer (2012) Physical properties of a Luvisol for different long-term fertilization treatments: I. Mesoscale capacity and intensity parameters. Journal of Plant Nutrition and Soil Science, 175 (1). pp. 4-13.

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Abstract

The physical properties of a Luvisol derived from loess near Bonn, Germany, under different long-term fertilization treatments were examined. For the investigation of the impact of farmyard manure (FYM) on soil strength at the mesoscale (100 to 300?cm3 soil cores), undisturbed samples were taken from two different depths (10 and 40?cm), either with no fertilization at all, with full mineral fertilization, with FYM only, and with both mineral and organic fertilization. We investigated hydraulic and mechanical parameters, namely precompression stress, pore-size distribution, saturated hydraulic and air conductivity, and calculated pore connectivity. Long-term organic fertilization resulted in significantly more and coarser pores which in addition were more conductant and mechanically stronger by trend. Mineral fertilization also increased pore volume by trend but not pore functionality. Mechanical strength generally increased with fertilization by trend, however, was reduced again when organic and mineral fertilization were combined. Nonetheless, FYM led to relatively higher soil strength as the FYM-treated plots with lower bulk density attained similar soil strength as the unfertilized but denser plots and thus supported the soil-improving impact of organic amendments. The subsoil physical properties were rather unaffected by fertilization, but were dominated by texture.

Document Type: Article
Additional Information: Univ Kiel, Inst Plant Nutr & Soil Sci, D-24118 Kiel, Germany. Holthusen, D (reprint author), Univ Kiel, Inst Plant Nutr & Soil Sci, Hermann Rodewald Str 2, D-24118 Kiel, Germany. d.holthusen@soils.uni-kiel.de
Keywords: soil strength precompression stress hydraulic conductivy air permeability organic fertilization long-term fertilization trial sandy loam soil organic-matter aggregate stability wettability tillage manure temperature moisture behavior burrows
Research affiliation: ?? agrar ??
OceanRep > The Future Ocean - Cluster of Excellence
ISSN: 1436-8730
Projects: Future Ocean
Date Deposited: 14 May 2014 10:01
Last Modified: 14 May 2014 10:01
URI: http://oceanrep.geomar.de/id/eprint/24042

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