Our Team
Virtual Supermarket
Lupins - Valuable Biomass for Meat Substitutes
Our Team
Virtual Supermarket
Lupins - Valuable Biomass for Meat Substitutes


Inside Bonn's Waste Management Plant

Last Friday, April 19th, students of the AFECO program had the opportunity to explore the inner workings of Bonn's waste management plant as part of their course on "Extended Methods of Empirical Research - Qualitative Methods".

Nudging in a virtual supermarket for more animal welfare

It may be possible to change the purchasing behavior of consumers noticeably using some simple strategies. At least this is what a study, carried out by the University of Bonn and the Technical University of Munich, indicates. The researchers investigated the effect of nudging on the sale of products produced with high animal welfare standards in a virtual supermarket. Nudges are gentle prods or pushes designed to promote certain behaviors – such as placing some products in more visible positions. In the experiment, the participants in the nudging group selected products produced with high animal welfare standards about twice as frequently as the control group. The extent to which these results can be transferred to real purchasing decisions is still unclear. The study has now been published in the journal “Appetite.”

Shopping study in a virtual supermarket

How can we encourage consumers to pay more attention to animal welfare aspects when they purchase meat? It now appears that this cannot be achieved solely by making the animal husbandry labels more visible. At least this is what the findings of a study carried out by the University of Bonn and TU Munich tend to indicate. In this study, the researchers invited test subjects to go shopping in a virtual supermarket. However, placing banners and labels indicating the type of animal husbandry on the shelves had no effect on their purchasing decisions. The results have now been published in the Journal of Consumer Protection and Food Safety.

NRW Bioeconomy Advisory Board begins its work

Evidence-based policy advice at its best: the Bioeconomy Advisory Board NRW, with two members from the University of Bonn, began its work yesterday.

Welcome to the Agricultural and Food Market Research Group!

Our research group  analyzes in an interdisciplinary team - consisting of agricultural economists, psychologists as well as nutritional, sustainability and political scientists - the behavior of consumers and other stakeholders in the value chains of the agri-food sector. In our research projects, we gain knowledge on how the transformation process, that is necessary to achieve the sustainability goals, can be promoted.

Thank you for your interest in our website!

Avatar Hartmann

Prof. Dr. Monika Hartmann

Head of Group Agricultural and Food Market Research

Secretary's Office

Stefanie Müller-Feigl

Contact details

+ 49 228 73-3538



1st floor, room 1.013

Nussallee 19
53115 Bonn

Our Research  & Current Projects

The research of our team focuses on the analysis of determinants and effects of ecologically, socially, and economically (un)responsible actions of stakeholders in the agricultural and food sector - this ranges from production and processing to consumption and also includes the consideration of institutional framework conditions. Based on this, we investigate the potential of market strategies as well as the role and legitimacy of policy interventions in initiating and transforming the food sector towards more sustainable ways of production and consumption. The spectrum of the research work of the research group covers the following issues:

  • Which factors influence the acceptance of citizens and actors in the food value chain with regard to new, more sustainable technologies, products, and social innovations in the agricultural and food sectors?
  • How do consumers make their food choices? What role do attitudes, social norms and habits play in explaining behavior?
  • How do actors in agriculture, the food industry, and the grocery trade react to new consumer and policy demands regarding the safety and sustainability of products and processes?
  • How can sustainable development take place in a competitive and increasingly concentrated agricultural and food sector?
  • How do actors on the agricultural and food markets deal with conflicting objectives?
© Colourbox


Investigate potential determinants of farmers’ adoption of lupin and bio-stimulants as a combined innovation.

© Colourbox


Investigate consumers' perception and acceptance of lignin-based products from different ressources.

© Janine Macht


Investigate marketing strategies for aquaponic products and identifying succes factors.

© Uni Bonn


Investigate consumers' acceptance of a new food technology, i.e. peptide-based ethylene inhibitors technology (PepTechFruit-technology).


Investigate consumers' perception and acceptance of different types of cellulose-based products, e.g. T-shirts and food packaging


  • Ökonomie II (WISO I: Politik und Märkte der Ernährungswirtschaft)
  • Einführung in die Methoden der empirischen Forschung
  • Agrar- und Lebensmittelmärkte – Marktbedingungen und Marketing
  • AGR-051: Verbraucher- und Ernährungspolitik
  • Advanced Methods
  • Behavioral Economics
  • Communication in the Food Sector
  • Ethics in Food Consumption and Production
  • Extended Methods of Empirical Research
  • Food Industrial Economics
  • Food Marketing
  • Global Agriculture and Food Markets


The next Bachelor Thesis-Café will take place

17th May


Our interdisciplinary team consists of agricultural economists, psychologists, nutritionists as well as sustainability, communication and political scientists.

Teamfoto 2022
© Jana Kilimann

Postdoctoral Researchers

Secretary's Office

Avatar Simons

Dr. agr. Johannes Simons


Avatar Klink-Lehmann

Jeanette Leila Klink-Lehmann

Dipl. Oecotroph.


Doctoral Researchers

Avatar Bach

Leonie Bach

M.Sc. Agricultural and Food Economics


Avatar Feisthauer

Philipp Feisthauer

M.Sc. Agricultural Economics


Avatar Landwehr

Stefanie Landwehr

Dipl. Oecotroph.


Avatar Macht

Janine Macht

M.Sc Agricultural and Food Economics, M.Sc Management, Economics and Consumer Studies


Avatar Rehm

Bodo Rehm

M.Sc. Agricultural and Food Economics


Avatar Sauvagerd

Monja Sauvagerd

M.A. in Political Sciences


Avatar Tatic

Milan Tatic

M.Sc. Agricultural and Food Economics


Student Assistants

Avatar Barg

Tabea Barg

Avatar Canevaro

Tania Canevaro

Avatar Hess

Anne Hess

Avatar Kilimann

Jana Kilimann

Avatar Wähler

Marika Wähler

External Staff Members

  • Ursula Ploll: ursula.ploll@ilr.uni-bonn.de
  • Ingo Birkle: ingo.birkle@ilr.uni-bonn.de
  • Kathrin Meyer: kathrin.meyer@ilr.uni-bonn.de
  • Dilani Janßen: dilani.janssen@ilr.uni-bonn.de
  • Thi Mai Ha Vo: maiha.vo@ilr.uni-bonn.de
  • Prof. Dr. Klaus Frohberg: frohberg@uni-bonn.de
  • Dr. Gesa Maschkowski: gesa.maschkowski@ilr.uni-bonn.de
  • Dr. Nikolai Reynolds: nreynolds@uni-bonn.de
  • Dr. Ching-Hua Yeh: chinghua.yeh@ilr.uni-bonn.de
  • Dr. Nina Weingarten: nina.weingarten@ilr.uni-bonn.de

Former Staff Members/Alumni

  • Lena Große Streine
  • Dr. Julia Haß
  • Dr. Bettina Anne-Sophie Lorenz-Walther
  • Dr. Jan-Paul von Germeten
  • Prof. Dr. Stefan Hirsch
  • Prof. Dr. Nina Langen
  • Dr. Sarah Methner
  • Dr. Sarah Heinen
  • Dr. Julia Hoffmann
  • Prof. Luisa Menapace
  • Dr. Sebastian Schornberg
  • Prof. Dr. Carola Grebitus
  • Dr. Jan Schiefer
  • Prof. Dr. Christian Fischer
  • Dr. Anne Katrin Lensch
  • Dr. Ina Banik
  • Dr. Sylvia Thrams
  • Dr. Helge Beyer
  • Dr. Ulrich Müller von Blumencron
  • Dr. Christoph Beukert
  • Prof. Dr. Christine Buchholz


Weingarten, N., Bach, L., Roosen, J., Hartmann, M. (2024): Every step you take: Nudging animal welfare product purchases in a virtual supermarket. Appetite, 107316 . Link.

Bach, L., Weingarten, N., Meyer, K.B., Yeh, C.-H., Dolgopolova, I., Wang, W.-X., Roosen, J., Hartmann, M. (2024): Der virtuelle Supermarkt als innovative Forschungsinfrastruktur: Experiment zur Erhöhung der Salienz für Fleischprodukte mit höherem Haltungsstandard. Journal of Consumer Protection and Food Safety. Link.

Feisthauer, P., Hartmann, M., Börner, J. (2024): Behavioral factors driving farmers' intentions to adopt spot spraying for sustainable weed control. Journal of Environmental Management, 353, 120218. Link.

Feisthauer, P., Hartmann, M., Börner, J. (2024): Adoption intentions of smart weeding technologies - a lab-in-the-field eperiment with German crop farmers. Q Open, qoae002. Link.

Landwehr, S.C., Hartmann, M. (2024). The influence of peers on children's snack purchase decisions. Appetite, 192, 107111. Link.

Ploll, U., Weingarten, N., Hartmann, M. (2023). Frame by frame, attitude by attitude - The effect of information framing in videos on consumers' acceptance of sustainable food production innovations. Journal of Environmental Psychology, 92, 102185. Link.

Klink-Lehmann, J.,Tatic, M., Weingarten, N., Hartmann, M. (2023). Sustainability trade-offs in animal husbandry: consumers' choice when they can't have it all. QOpen, qoad025, Link.

Aung, M. T. T., Dürr, J., Klink-Lehmann, J., & Borgemeister, C. (2023). Predicting consumers’ intention towards entomophagy using an extended theory of planned behavior: evidence from Myanmar. International Journal of Tropical Insect Science. Link.

Hirsch, S., Petersen, T., Koppenberg, M., & Hartmann, M. (2023). CSR and firm profitability: Evidence from a meta‐regression analysis. Journal of Economic Surveys, 37(3), 993-1032. Link.

Landwehr, S.C.; Hartmann, M.; Cash, S.B.; Yeh, C.-H. (2023): The kids are not all the same – Heterogeneity in children’s snack purchase behavior, Food Quality and Preference, 109, 104906, Link.

Macht, J., Klink-Lehmann, J., Hartmann, M. (2023): Don't forget the locals: Understanding citizens' acceptance of bio-based technologies, Technology in Society, 74, 102318, Link.

Macht, J., Klink-Lehmann, J., Venghaus, S. (2023): Eco-friendly alternatives to food packed in plastics: German consumers' purchase intentions for different bio-based packaging strategies, Food Quality and Preference, 109, 104884, Link.

Myint Thu Thu, A., Klink-Lehmann, J., Dürr, J., & Borgemeister, C. (2023). Behaviour intention to eat reared crickets in Myanmar: the effects of trust, knowledge, and perceived quality. Journal of Insects as Food and Feed (published online ahead of print 2023). Link.

Petersen, T., Tatic, M.,  Hartmann, M., Hirsch, S. (2023): Meat and meat substitutes—A hedonic-pricing model for the German market. Journal of the Agricultural and Applied Economics Association. Link.

Yeh, C.-H. & Hirsch, S. (2023): A meta-regression analysis on the willingness-to-pay for country-of-origin labelling, Journal of Agricultural Economics, 00, 1-25, Link.

Weingarten, N., & Hartmann, M. (2023). Fifty shades of grain–Increasing whole grain consumption through daily messages. Appetite, 106608. Link.

Weingarten, N., Hartmann, M. (2023): Let's talk about straw: the effect of information provision on consumers' attitudes towards pig husbandry systems, British Food Journal 125(5): 1840-1853, Link.

Weingarten, N., Lagerkvist, C.-J., Meraner, M.,  Hartmann, M. (2023): Triggering cognitive dissonance with textual information and images: Data from three experiments with meat-eaters, Data in Brief, 48, 109116, Link.

Weingarten, N., Lagerkvist, C.-J. (2023): Can images and textual information lead to meat avoidance? The mediating role of cognitive dissonance, Food Quality and Preference 104(104747), Link.

Amilien, V., Discetti, R., Lecoeur, J.-L., Roos, G., Tocco, B., Gorton, M., Biasini, B., Menozzi, D., Duboys de Labarre, M., Filipović, J., Meyer, K., Áron, T., Veljković, S., Wavresky, P., Haugrønning, V., Csillag, P., Simons, J., Ognjanov, G. (2022): European food quality schemes in everyday food consumption: An exploration of sayings and doings through pragmatic regimes of engagement, Journal of Rural Studies 95: 336-349, Link.

Birkle, I., Klink-Lehmann, J., Hartmann, M. (2022): Different and alike: Level and determinants of public acceptance of fattening pig, beef cattle and broiler farming in Germany, Meat Science, Special Issue 193(108946), Link.

Hirsch, S., Petersen, T., Koppenberg, M., Hartmann, M. (2022): CSR and firm profitability: Evidence from a meta-regression analysis, Journal of Economic Surveys: 1 - 40, Link.

Klink-Lehmann, J., Langen, N., Simons, J., Hartmann, M. (2022): Jumping on the Bandwagon of Responsibility—Or Not? Consumers’ Perceived Role in the Meat Sector, Sustainability 14(10): 6295, Link.

Macht, J., Klink-Lehmann, J., Simons, J. (2022): German Citizens’ Perception of the Transition towards a Sustainable Bioeconomy: A Glimpse into the Rheinische Revier, Sustainable Production and Consumption 31: 175-189, Link.

Macht, J., Klink-Lehmann, J., Piqueras-Fiszman, B., Hartmann, M. (2021): Insights into the organic labelling effect: the special case of wine, British Food Journal 124(11): 3974-3992, Link.

Marcus, N., Klink-Lehmann, J., Hartmann, M. (2022): Exploring factors determining German consumers’ intention to eat meat alternatives, Food Quality and Preference: 104610, Link.

Menozzi, D., Yeh, C.-H., Cozzi, E., Arfini, F. (2022): Consumer Preferences for Cheese Products with Quality Labels: The Case of Parmigiano Reggiano and Comté, Animals Vol. 12(10), Link.

Ploll, U., Arato, M., Börner, J., Hartmann, M. (2022): Sustainable Innovations: A Qualitative Study on Farmers’ Perceptions Driving the Diffusion of Beneficial Soil Microbes in Germany and the UK, Sustainability 14(10): 1-23, Link.

Török, A., Gorton, M., Yeh, C.-H., Czine, P., Balogh, P. (2022): Understanding Consumers’ Preferences for Protected Geographical Indications: A Choice Experiment with Hungarian Sausage Consumers, Foods Vol. 11(7), Link.

Weingarten, N., Meraner, M., Bach, L., Hartmann, M. (2022): Can information influence meat consumption behaviour? An experimental field study in the university canteen, Food Quality and Preference, 97, 104498, Link.

Diaz, A. S. L., Macheda, D., Saha, H., Ploll, U., Orine, D., Biere, A. (2021): Tackling the Context-Dependency of Microbial-Induced Resistance, Agronomy 11(7): 1293 ff., Link.

Gorton, M., Tocco, B., Yeh, C.-H., Hartmann, M. (2021): What determines consumers’ use of eco-labels? Taking a close look at label trust, Ecological Economics 189: 107173, Link.

Huffaker, R., Hartmann, M. (2021): Reconstructing dynamics of foodborne disease outbreaks in the US cattle market from monitoring data, Plos One 16(1), Link.

Lerro, M., Yeh, C.-H., Klink-Lehmann, J., Hartmann, M., Cembalo, L. (2021): The Effect of Moderating Variables on Consumer Preferences for Sustainable Wines, Food Quality and Preference 94: 104336, Link.

Menozzi, D., Giraud, G., Saidi, M., Yeh, C.-H. (2021): Consumer choice drivers for quality-labelled food: A cross-cultural comparison on PDO cheese., Foods 10(6): 1176, Link.

Meyer, K., Simons, J. (2021): Good Attitudes Are Not Good Enough: An Ethnographical Approach to Investigate Attitude-Behavior Inconsistencies in Sustainable Choice, Foods 10(6): 1317, Link.

Petersen, T., Hartmann, M., Hirsch, S. (2021): Which meat (substitute) to buy? Is Front of Package Information reliable to identify the healthier and more natural choice?, Food Quality and Preference 94: 104298, Link.

Schäfer, F. J., Feneis, B., Keller, M., Meyer, S., Simons, J., Wedekind, H. (2021): Der Fischmarkt in Deutschland im Pandemiejahr 2020 – Einfluss auf den (nationalen) Aquakultursektor und das Konsumverhalten, Zeitschrift für Fischerei 1, Artikel 8: 1-8, Link.

Simons, J., Vierboom, C., Klink-Lehmann, J., Härlen, I., Hartmann, M. (2021): Vegetarianism/Veganism: A Way to Feel Good, Sustainability 13(7): 3618, Link.

Yeh, C.-H., Hartmann, M. (2021): To Purchase or Not to Purchase? Drivers of Consumers’ Preferences for Animal Welfare in Their Meat Choice, Sustainability 13(16): 9100, Link.

Yeh, C.-H., Hartmann, M., Gorton, M., Tocco, B., Amilien, V., Steinnes, K. K. (2021): Looking behind the choice of organic: A cross-country analysis applying Integrated Choice and Latent Variable Models, Appetite 167: 105591, Link.

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