Univ.-Prof. Bernard Ludwig - Research Information System | University of Kassel - CONVERIS Research Information System

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Prof. Dr. Bernard Ludwig

Projects as Principal Investigator

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04/2023 - 03/2026	Designed experiments for optimizing infrared spectroscopic characterizations and quantifications of soil organic matter at scales of increasing complexity: importance of band shifts, spectral variable selection and subtraction approaches
01/2022 - 11/2025	Combined use of laboratory-based and portable infrared and x-ray fluorescence spectroscopy approaches for the spatial-vertical characterization of samples of selected soil groups
04/2021 - 03/2024	Are interactions of labile substrates with biochars the key process explaining C stabilization by biochars? A proof of concept by isotopic approaches
04/2018 - 12/2021	Synergetic use of mobile and lab-based spectroscopic techniques (vis-NIR, lab and hand-held MIR, portable hyperspectral frame camera) to optimize the determination of soil properties with high variability in time and space
2016 - 2019	FOR 2432: Social-Ecological Systems in the Indian Rural-Urban Interface: Functions, Scales, and Dynamics of Transition - Teilprojekt: Intensivierungseffekte auf Stoffflüsse in Rural-Urbanen Anbausystemen in der Forschergruppe
2016 - 2019	Social-Ecological Systems in the Indian Rural-Urban Interface: Functions, Scales and Dynamics of Transition. Cluster A: Matter flows in rural-urban cropping systems
06/2013 - 2016	Effects of water content, input of roots and dissolved organic matter and spatial inaccessibility on C turnover & determination of the spatial variability of subsoil properties (Teilprojekt der Forschergruppe FOR 1806: Der vergessene Teil des Kohlenstoffkreislaufs: Lagerung und Umsatz des organischen Materials im Unterboden)
09/2011 - 2014	Bedeutung der Stickstoff-Aufnahmepfade von Mikroorganismen im Boden
2011 - 2015	Optimierung der Einsatzfähigkeit der Infrarot-Reflexionsspektroskopie in der Bodenökologie: Bestimmung der Zusammensetzung und Stabilität der organischen Bodensubstanz und Vorhersagen in offenen Populationen
01/2007 - 12/2010	Steuerung von Humus- und Nährstoffhaushalt in der Ökologischen Landwirtschaft

Projects as Co-Investigator

02/2019 - 12/2020	PPP China ab 2018
2007 - 2011	Steuerung von Humus- und Nährstoffhaushalt in der Ökologischen Landwirtschaft: Teilprojekt F1 - Gasförmige und sickerungsbedingte C- und N-Verluste aus gedüngten und bewässerten Ackerflächen einer subtropischen Küst
01/1994 - 12/2000	ökochemisches Profil von Enrofloxacin in Boden und Wasser

Publications

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2010	Geisseler, D., Horwath, W.R., Joergensen, R.G., Ludwig, B., 2010. Pathways of nitrogen utilization by soil microorganisms - A review. Soil Biology and Biochemistry. https://doi.org/10.1016/j.soilbio.2010.08.021
2010	Michel, K., Ludwig, B., 2010. Prediction of model pools for a long-term experiment using near-infrared spectroscopy. Journal of Plant Nutrition and Soil Science 173, 55–60. https://doi.org/10.1002/jpln.200800181
2009	Scheller, E., Raubuch, M., Ludwig, B., 2009. CO2 evolution and N mineralization after biogas slurry application in the field and its yield effects on spring barley. Applied Soil Ecology 42, 297–302. https://doi.org/10.1016/j.apsoil.2009.05.012
2009	Ludwig, B., 2009. Impact of fertilizer type and rate on carbon and nitrogen pools in a sandy Cambisol. Plant and Soil 319, 259–275. https://doi.org/10.1007/s11104-008-9868-x
2009	Jacobs, A., Ludwig, B., 2009. Impact of reduced tillage on carbon and nitrogen storage of two Haplic Luvisols after 40 years. Soil and Tillage Research 102, 158–164. https://doi.org/10.1016/j.still.2008.08.012
2009	Michel, K., Ludwig, B., 2009. Predictive capacity of visible-near infrared spectroscopy for quality parameter assessment of compost. Journal of Near Infrared Spectroscopy 17, 289–301. https://doi.org/10.1255/jnirs.850
2009	Michel, K., Ludwig, B., 2009. Use of near- and mid-infrared spectroscopy to distinguish carbon and nitrogen originating from char and forest-floor material in soils. Journal of Plant Nutrition and Soil Science 172, 63–70. https://doi.org/10.1002/jpln.200700246
2008	Ludwig, B., Kuka, K., Franko, U., von Lutzow, M., Ludwig, B., 2008. Comparison of two quantitative soil organic carbon models with a conceptual model using data from an agricultural long-term experiment. Journal of Plant Nutrition and Soil Science. https://doi.org/10.1002/jpln.200700053
2008	Helfrich, M., Ludwig, B., Potthoff, M., Flessa, H., 2008. Effect of litter quality and soil fungi on macroaggregate dynamics and associated partitioning of litter carbon and nitrogen. Soil Biology and Biochemistry 40, 1823–1835. https://doi.org/10.1016/j.soilbio.2008.03.006
2008	Terhoeven-Urselmans, T., Bruns, C., Schmilewski, G., Ludwig, B., 2008. Quality assessment of growing media with near-infrared spectroscopy: Chemical characteristics and plant assays. European Journal of Horticultural Science 73, 28–36.