The Willingness to Pay for Organic Milk by Consumers in Tehran

Authors
Department of Agricultural Economics, Sari University of Agricultural Sciences and Natural Resource, Sari, Islamic Republic of Iran.
Abstract
This study determines the consumers’ willingness to pay for organic milk in Tehran by using Contingent Valuation Method and Single Bounded Dichotomous Choice questionnaire. Logit regression model was used to evaluate the effect of explanatory variables on willingness to pay and the model parameters were estimated by using maximum likelihood approach. For this purpose, 450 questionnaires were completed in the city by respondents who had independent income in 2012. Shazam, SPSS, and Maple softwares were used to obtain the results. According to the results, variables such as income, family’s illness history, age, educational level, distance to the shopping center, apprising respondents, organic milk quality, and the offered price had a significant effect on consumers' willingness to pay for organic milk. Overall, 80.3% of the respondents were willing to buy organic milk. The average of consumers' willingness to pay was estimated at 28,600 Rials per liter of organic milk. The results showed this product to be important for people; and this point can help producers, planners, and managers for further development of this product.

Keywords


1. Beig Mohamadi, Z., Pezeshke, A. and Fothollahi, E. 2011. Organic Foods. In First National Food Security Seminar. http://www.civilica.com/Paper-FSS01-FSS01_249.html (in Persian).
2. Bennett, R. M., Tranter, R. B. and Blaney, R. 2003. The Value of Countryside Access: A Contingent Valuation Survey of Visitors to the Ridgeway National Trail in the United Kingdom. J. Environ. Plann. Man., 46: 659– 671.
3. Boyle, K. J., Welsh, M. P. and Bishop, R. C. 1993. The Role of Question Order and Respondent Experience in Contingent–valuation Studies. J. Environ. Econ. Man., 95: 580–590.
4. Bravo, C., Cordts, A., Schulz, B. and Spiller, A. 2012. Assessing Determinants of Organic Food Consumption Using Data from the German National Nutrition Survey II. Food Qual. Prefer., 28: 60–70.
5. Burch, D., Lyons, K. and Monk, A. 2002. Standards Setting and Regulatory Equivalence for Organic Foods within APEC: Final Report. Department of Industry, Science and Resources, Griffith University, Brisbane.
6. Carmona-Torres, M. and Calatrava-Requena, J. 2006. Bid Design and Its Influence on the Stated Willingness to Pay in a Contingent Valuation Study. Contributed Paper Prepared for Presentation at the International Association of Agricultural Economists Conference, August 12-18, 2006, Gold Coast, Australia. Available at: http://agecon.lib.umn.edu/cgi-bin/pdf_view.pl?paperid=22558&ftype=.pdf
7. Ghorbani, M., Mahmoudi, H. and Liaghati, H. 2007. Consumers’ Demands and Preferences for Organic Foods: A Survey Study in Mashhad, Iran. 3rd QLIF Congress. http:// orgprints.org/9831/01/ghorbani-etal-2007 consumer s_preference_iran.pdf
8. Gil, M. and Soler, F. 2006. Knowledge and Willingness to Pay for Organic Food in Spain: Evidence from Experimental Auctions. Acta. Agr. Scand C., 3: 109 – 124.
9. Gracia, A. and Magisteris, T. 2008. The Demand for Organic Foods in the South of Italy: A Discrete Choice Model. Food Policy., 33: 386- 396.
10. Guo, Z., Xiao, X., Gan, Y. and Zheng, Y. 2001. Ecosystem Functions, Services and their Values- A Case Study in Xingshan County of China. Ecol. Econ., 38: 141-154.
11. Haghjou, M. Hayati, B. Pishbahar, E. Mohammadrezaei, R. and Dashti, Gh. 2013. Factors Affecting Consumers’ Potential Willingness to Pay for Organic Food Products in Iran: Case Study of Tabriz. J. Agri. Sci. Tech., 15: 191-202.
12. Hanemann W. M. 1984. Welfare Evaluation in Contingent Valuation Experiments with Discrete Responses. Amer. J. Agri. Econ., 66(3): 332-341.
13. Heidari, Kh. and Ghaderi, j. 2010. Why is Organic Farming?. The 1st Iranian Fertilizer Challengs Congress. http://www.civilica.com/Paper-FERTILIZER01-FERTILIZER01_118.html
14. Janssen, M. and Hamm, U. 2012. Product Labelling in the Market for Organic Food: Consumer Preferences and Willingness to Pay for Different Organic Certification Logos. Food Qual. Prefer., 25: 9–22.
15. Kashani, A. 2001. Sustainable Agriculture in Iran: Concepts, Methods and Present Situation. Jihad, 20: 35-51.
16. Loureiro M., Jill, J. and Mccluskey, R. 2002. Will Consumers Pay a Premium for Eco-labeled Apples? J. Consum. Aff., 36: 203 - 217.
17. Malek-Saeidi, H., Rezaei-Moghaddam, K. and Ajili, A. 2012. Professionals’ Attitudes towards Organic Farming: The Case of Iran. J. Agri. Sci. Tech., 14: 37-50.
18. Marvin, T., Neal, H., Hooker, T. C. and Haab, J. B. 2007. Putting Their Money Where Their Mouths Are: Consumer Willingness to Pay for Multi-Ingredient, Processed Organic Food Products. J. Food Policy, 32: 145–159.
19. Napolitano, F., Braghieri, A., Piasentier, E., Favotto, S., Naspetti, S. and Zanoli, R. 2010. Effect of Information about Organic Production on Beef Liking and Consumer Willingness to Pay. Food Qual. Prefer., 21: 207-212.
20. Olesen, F., Alfnes, M., Rora, B. and Kolstad, K. 2010. Eliciting Consumers’ Willingness-to- pay for Organic and Welfare-labelled Salmon in a Non-hypothetical Choice Experiment. Livestoch Sci.; 127: 218- 226.
21. Park, T. and Loomis, J. 1996. Joint Estimation of Contingent Valuation Survey Responses. Environ. Resour. Econ., 7: 149-162.
22. Rodríguez, E. Lacaze, V. and Lupín, B. 2008. Contingent Valuation of Consumers’ Willingness-to-Pay for Organic Food in Argentina. 12th Congress of the European Association of Agricultural Economists (EAAE),Ghent, Belgium, Aug 1-10. available at: http://nulan.mdp.edu.ar/1022/1/00352.pdf
23. Van Doorn, J. and Verhoef, C. 2011. Willingness To Pay for Organic Products: Differencess Between Virtue and Vice Foods, Intern. J. Research in Marketing; 28: 218-226.
24. Yahaya, I. 2011. Measuring Consumers Willingness to Pay for Safer Vegetables in Urban and Peri-Urban Ghana. MSc. Dissertation, Department of Agricultural Economics, Agribusiness and Extension, Kwame Nkrumah University.
25. Zander, K. and Hamm, U. 2010. Consumer Preferences for Additional Ethical Attributes of Organic Food. Food Qual. Prefer., 21: 495-503.
26. Zanoli, R., Baher, M., Botschen, M., Laberenz, H., Naspetti, S. and Thelen, E. 2004. The European Consumer and Organic Food. Development of Organic Marketing Initiatives and Rural, School of Management and Business, Aberystwyth, 4.