Accessible Requires Authentication Published by De Gruyter April 14, 2015

Structure investigation of soil aggregates treated with different organic matter using X-ray micro tomography*

Strukturuntersuchung organisch behandelter Bodenaggregate mittels Mikro-Röntgen-Computertomographie
Keiko Nakano, Werner B. Herppich, Nikolay Kardjilov, Ingo Manke, André Hilger, Martin Dawson, Kinya Masuda, Yoshitaka Hara and Uzuki Matsushima
From the journal Materials Testing


Soil aggregation which is favorable for plant growth, can be modified by the presence of organic matter and farmers apply different materials to promote soil aggregation and enhance its stability. However, the relationship between the type of organic matter and the resulting properties of the aggregate structure is unclear. Using micro X-ray tomography, intra-aggregate pore formation in soils from fields in Southwestern Japan fed with different organic fertilizers was compared. Organic matter, especially manure-based matter, increased porosity of the intra-aggregate, which is considered to increase growth conditions. Pores that connected the core of the aggregates with the surface were observed in organic matter-applied fields and sponge-like pores were observed in manure-fed fields.


Wegen der starken Auswirkungen der strukturellen Beschaffenheit des Bodens auf das Wachstumsverhalten von Pflanzen werden in der Landwirtschaft verschiedene organische Stoffe verwendet, um die Bodenstruktur zu Gunsten des Pflanzenwachstums zu beeinflussen. Der genaue Zusammenhang zwischen den eingesetzten Stoffen und den daraus resultierenden Struktureigenschaften des Bodens ist jedoch bislang kaum verstanden. In diesem Beitrag wurden Proben von verschieden behandelten Böden aus Südwest-Japan mittels hochauflösender Röntgen-Tomographie (μ-CT) untersucht. Alle Proben stammen von Reisfeldern, die mit vier verschiedenen organischen Stoffen behandelt wurden, und deren Struktur mit der einer unbehandelten Probe verglichen wurde. Es konnte gezeigt werden, dass der Einsatz von Düngemitteln die Porosität der Böden deutlich steigern kann, was sehr vorteilhaft für das Pflanzenwachstum ist. Zudem erkennt man klare Unterschiede zwischen den unterschiedlich behandelten Böden.

§Correspondence Address, Dr. rer. nat. Werner B. Herppich, Leibniz-Institut für Agrartechnik Potsdam-Bornim e.V., Max-Eyth-Allee 100, D-14469 Potsdam,

Dr. rer. nat. Werner B. Herppich, born in 1956, studied Biology and Chemistry at the University of Bayreuth, Germany. From 1984 to 1996 he worked as a research assistant at the University of Bayreuth and at the Westfälische Wilhelms Universität (WWU) in Muenster, Germany. He received his doctoral degree in 1989, completing his thesis on the effects on environmental parameters (light, leaf temperature, air humidity, soil water availability and leaf water status) on CAM mode in Plectranthus marrubioides Benth. Since 1997 he works at the Leibniz Institut für Agrartechnik Potsdam-Bornim e. V., Abteilung Technik im Gartenbau, Potsdam, Germany. His research focuses on pre- and postharvest effects on physiological properties (photosynthesis, water relations, biophysics) and quality of fruits, vegetables and ornamentals.

Dr. rer. nat. Nikolay Kardjilov is responsible for the neutron tomography instrument CONRAD at Helmholtz Center Berlin for Materials and Energy, Germany. He studied Physics at Sofia University, Bulgaria, where he received his MSc degree. Thereafter, he completed his PhD work in the field of neutron tomography at the Department of Physical Science at TU Munich. In 2003, he moved to Helmholtz Center Berlin for Materials and Energy (HZB), where he set up a new neutron tomography instrument. His research topics are the development and application of radiographic and tomographic techniques with neutrons.

Dr. rer. nat. Ingo Manke is Head of the Imaging Group at Helmholtz Center Berlin for Materials and Energy (HZB). He studied Physics at the Freie Universität Berlin, Germany and completed his PhD thesis at TU Berlin, Germany in the field of scanning near field microscopy. Later he worked at Fraunhofer Institute for Reliability and Microintegration, Berlin, Germany. Since 2003, he is working at HZB with research interests in materials science and in the development and application of radiographic and tomographic techniques with neutrons and X-rays.

Dr.-Ing. André Hilger is responsible for the synchrotron and neutron tomography facilities and the 3D data analysis center at Helmholtz Center Berlin (HZB). He studied Technical Physics at the University of Applied Science (TFH) Berlin, Germany. After receiving his bachelor degree he worked as a technician between 2001 and 2006 at HZB as well as at TFH. In 2006, he obtained his MSc degree at TFH. In 2009, he accomplished his PhD thesis in Materials Science and is now working on a post-doc position at HZB.

Dr. Martin Dawson, born in 1982, studied Physics at the University of Leeds, UK. He undertook a PhD in the field of neutron imaging jointly at the University of Leeds and the Institute Laue-Langevin, France, and later worked on the neutron imaging instrument at the Helmholtz Center Berlin for Materials and Energy, Germany. He is currently a lecturer at the University of Salford, UK.

Prof. Dr. Uzuki Matsushima studied Agricultural Engineering at the Yamagata University, Japan. In 2001, she completed her PhD thesis in agriculture at the University of Tokyo, Japan. From 1999 until 2005 she held a position as Research Associate at the University of the Ryukyus, Japan. Then, from 2005 to 2007, she worked as Associate Professor at the Faculty of Agriculture Environmental Science Recycling Bioproduction Engineering of the Iwate University, Morioka, Japan and since 2007 at the Faculty of Agriculture of the same university. Key topics of her research are plant and biological instrumentation and environment control in biology.


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Published Online: 2015-04-14
Published in Print: 2015-03-02

© 2015, Carl Hanser Verlag, München