Olaf Christen

ORCID: 0000-0002-9950-7228
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About
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Research Areas
  • Soil Carbon and Nitrogen Dynamics
  • Agriculture Sustainability and Environmental Impact
  • Agricultural Economics and Policy
  • Crop Yield and Soil Fertility
  • Agronomic Practices and Intercropping Systems
  • Soil and Unsaturated Flow
  • Bioenergy crop production and management
  • Soil Management and Crop Yield
  • Nitrogen and Sulfur Effects on Brassica
  • Wheat and Barley Genetics and Pathology
  • Soil and Water Nutrient Dynamics
  • Geotechnical Engineering and Soil Stabilization
  • Soil Mechanics and Vehicle Dynamics
  • Weed Control and Herbicide Applications
  • Anaerobic Digestion and Biogas Production
  • Agriculture, Plant Science, Crop Management
  • Plant Water Relations and Carbon Dynamics
  • Agriculture and Biological Studies
  • Plant Disease Resistance and Genetics
  • Plant Micronutrient Interactions and Effects
  • Nutritional Studies and Diet
  • Organic Food and Agriculture
  • Botany and Plant Ecology Studies
  • Agricultural Science and Fertilization
  • Sustainable Agricultural Systems Analysis

Martin Luther University Halle-Wittenberg
2012-2021

Wittenberg University
2012-2013

Rheinhessen-Fachklinik Mainz
2006

Kiel University
1992-2004

University of New England
1993-1994

Besides technical improvements and a reduction of food losses in the chain, diet shifts offer practicable opportunities to reduce environmental impacts agri-food sector on low-cost basis. In this paper we analyze nutrition Germany year 2006. Based an equalized daily energy uptake 2000 kcal person–1 day–1, compared these with those four dietary scenarios (D-A-CH, UGB, ovo-lacto vegetarian, vegan) average from 20 years ago, differentiating between effects caused by altering losses, wastage,...

10.1021/es302152v article EN Environmental Science & Technology 2012-11-28

Many arable soils have significant horizon-specific gravel content levels. Just how these influence compaction behaviour, and in particular precompression stress as an important criterion of a soil's susceptibility to compaction, has yet be sufficiently clarified. This article is intended contribute towards answering this question. Firstly, three different fine earths, from the "Clay", "Silt Loam" "Sandy soil texture classes were mixed with staggered proportions (0, 10, 20, 30, 40% by...

10.1016/j.geoderma.2013.05.030 article EN cc-by-nc-nd Geoderma 2013-07-21

Economic conditions are forcing farmers to grow crops with high revenue leading cereal-dominated crop rotations increasing risk due unfavourable preceding or combinations. Based on a long-term field trial (1988–2001) 15 different including winter oilseed rape (OSR), wheat, barley, spring peas and oats, the effects of crops, pre-preceding grain yield mainly OSR, wheat barley were quantified. In subsequent 2 years (2001/2002 2002/2003), was grown all plots in order test residual former (as...

10.1080/03650340.2015.1017569 article EN Archives of Agronomy and Soil Science 2015-02-10

Oral diseases such as dental caries, edentulism (tooth loss), periodontal disease (PD), and oral cancer currently constitute an increased major public health burden across the globe, with significant differences between countries. One of main drivers edentulism, PD is excessive intake sugars. Here, we aimed to quantify global sugar-related cost in year 2010. This study used a health-econometrical model calculate well direct indirect costs attributable free sugars (mono- disaccharides [MDS])....

10.1177/0022034517708315 article EN Journal of Dental Research 2017-05-10

Non-communicable diseases (NCDs) represent not only the major driver for quality-restricted and lost life years; NCDs their related medical treatment costs also pose a substantial economic burden on healthcare intra-generational tax distribution systems. The main objective of this study was therefore to quantify unbalanced nutrition in Germany—in particular effects an excessive consumption fat, salt sugar—and examine different reduction scenarios basis. In study, avoidable direct cost...

10.1371/journal.pone.0135990 article EN cc-by PLoS ONE 2015-09-09

Die Nutztierhaltung in Deutschland hat sich den letzten Jahrzehnten zu einem wirtschaftlich sehr erfolgreichen Sektor entwickelt. Es wurden grose Fortschritte Bezug auf die Ressourceneffizienz erzielt. Gleichzeitig gibt es erhebliche Defizite vor allem im Bereich Tierschutz, aber auch Umweltschutz. In Kombination mit einer veranderten Einstellung zur Mensch-Tier-Beziehung fuhrte dies verringerten gesellschaftlichen Akzeptanz der Nutztierhaltung. Vor diesem Hintergrund halt Wissenschaftliche...

10.12767/buel.v0i221.82 article DE Berichte über Landwirtschaft - Zeitschrift für Agrarpolitik und Landwirtschaft 2015-07-20

Winter oilseed rape (Brassica napus L., WOSR) is the major oil crop cultivated in Europe. Rapeseed predominantly used for production of biodiesel. The framework European Renewable Energy Directive requires that use biofuels achieves GHG savings at least 50% compared to fossil fuel starting 2018. However, N2O field emissions are estimated using emission factors not specific and associated with strong uncertainty. controlled by N fertilization dominate balance WOSR cropping due high global...

10.1016/j.agee.2017.07.039 article EN cc-by Agriculture Ecosystems & Environment 2017-08-24
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