Sweet potato is among neglected and underutilized staple crop in Tanzania. Despite being vitamin A rich, yet most of Tanzanians prefers other crops than sweet potatoes. In order to promote consumption of vitamin A rich sweet potato in Tanzania, value addition is critically needed. Therefore, this study was designed to determine willingness of consumers to pay for selected processed Orange Fleshed Sweet Potatoes in Morogoro region. The study used a cross sectional research design by involving 120 randomly selected consumers. Primary data were collected using self-administered questionnaires. Collected data were cleaned, coded and analysed with an aid of Statistical Package for Social Science (SPSS version 25). The analysis of collected data was aided with means, frequencies and binary logistic regression. Results showed that mean willingness to pay of TZS 4106.26 per kg for OFSP flour, TZS 1568.67 and TZS 1592 per one-quarter kg for OFSP bread (30%) and OFSP bread (20%) respectively and TZS 973.84 per one-tenth kg for OFSP biscuits. Logistic Regression analysis established that bid/price, education level, income, nutrients and packaging as the factors influencing significantly consumers’ WTP for the OFSP products at P < 0.05 level of significance. Household size was found to influence WTP for OFSP flour and OFSP bread (30%) at P < 0.05 level of significance. Age and sex of respondents were also found to influence WTP for OFSP biscuits and OFSP flour at the same level of significance respectively. The study concluded with regards to consumers’ willingness to pay for products made by OFSP, indicates great opportunity to be exploited on value addition. Therefore, there is a need to promote the identified opportunity to domestic and foreign investors so as to enhance investment on value addition to OFSP.
References
[1]
Abong, G. O., Muzhingi, T., Wandayi, M., Ng, F., Emelda, P., Daniel, O., Mbogo, M., Malavi, D., Akhwale, M., & Ghimire, S. (2021). Processing Methods Affect Phytochemical Contents in Products Prepared from Orange-Fleshed Sweetpotato Leaves and Roots. Food Science & Nutrition, 9, 1070-1078. https://doi.org/10.1002/fsn3.2081
[2]
Adekunle, A. A., Ellis-Jones, J., Ajibefun, I., Nyikal, R. A., Bangali, S., Fatunbi, O., & Ange, A. (2012). AgriculturalInnovationinSub-SaharanAfrica:Experiencefrom Multi-Stakeholders Approaches:ForumforAgriculturalResearchinAfrica.
[3]
Adepoju, O. A., & Oyewole, O. O. (2013). Households’ Perception and Willingness to Pay for Bread with Cassava Flour InclusioninOsogboMetropolis,Osun State,Nigeria.
[4]
Agyekum, O. E., Ohene-Yankyera, K., Keraita, B., Fialor, C. S., & Abaidoo, C. R. (2014). Willingness to Pay for Faecal Compost by Farmers in Southern Ghana. JournalofEconomicsandSustainableDevelopment,5, 18-25.
[5]
Annette, N. M., Makeda, T., Mukani, M., & Tawanda, M. (2023). Tailoring Business Models for Small-Medium Food Enterprises in Eastern Africa Can Drive the Commercialization and Utilization of Vitamin A Rich Orange-Fleshed Sweet Potato Puree. Open Agriculture, 8, Article ID: 20220168.
[6]
Anyam, E. O., Fashogbon, E. A., & Oni, A. O. (2013). Consumers’ Willingness to Pay for Safety Attributes of Bread in Lagos Metropolis, Nigeria: International Conference of the African Association of Agricultural Economists, Hammamet, Tunisia Credence At-tribute Claim Verification. JournalofAgriculturalandResourceEconomics,35, 261-280.
[7]
Baltas, G., & Doyle, P. (2001). Random Utility Models in Marketing Research: A Survey. JournalofBusinessResearch,51, 115-125. https://doi.org/10.1016/s0148-2963(99)00058-2
[8]
Bao, B. M., & Fweja, L. W. T. (2020). Evaluation of the Potential of Freshly Bred Orange-Fleshed Sweet Potato Varieties in Combating Vitamin A Deficiency. Tanzania Journal of Science,46, 1-8.
[9]
Bocher, T., Sindi, K., Muzhingi, T., Nshimiyimana, J. C., Nzamwita, M., & Low, J. (2019). Investigating Consumer Preferences and Willingness to Pay for Orange-Fleshed Sweet Potato (OFSP) Juice in Rwanda. OpenAgriculture,4, 227-236. https://doi.org/10.1515/opag-2019-0021
[10]
Cerda, A. A., García, L. Y., Ortega-Farías, S., & Ubilla, A. M. (2012). Consumer Preferences and Willingness to Pay for Organic Apples in Chile. CienciaeInvestigationAgraria,39, 47-59.
[11]
Cheboi, J. J., Abong, G., Greathead, H., Keyster, M., & Nkukwana, T. (2024). Current Research in Nutrition and Food Science Consumer Awareness, Utilization, and Acceptance of Orange-Fleshed Sweet Potato (Ipomoea batatas (L.) Lam) Value-Added Food Products in Elgeyo Marakwet County, Kenya. Current Research in Nutrition and Food Science, 12, 330-338.
[12]
Emunu, P. J., McCann-Hiltz, D., & Hu, W. (2012). Canadian Consumer Willingness to Pay for Omega-3 Meat. JournalofFoodProductsMarketing, 18, 287-305.
[13]
Fetuga, G. O., Tomlins, K., Bechoff, A., Henshaw, F. O., Idowu, M. A., & Westby, A. (2013). A Survey of Traditional Processing of Sweet Potato Flour for Amala, Consumption Pattern of Sweet Potato Amala and Awareness of Orange-Fleshed Sweet Potato (OFSP) in South-West Nigeria. JournalofFood,AgricultureandEnvironment,11, 67-71.
[14]
Fortunatus, R. M., Simonne, A. H., & Mongi, R. J. (2021). Quality Assessment of Ugali Blended with Orange-Fleshed Sweet Potato to Alleviate Vitamin A Deficiency in Tanzania. African Journal of Food Science, 15, 226-235. https://doi.org/10.5897/AJFS2020.2057
[15]
Gabor, K., Carlos, A., da Silva, & Nomathemba, M. (2013). Enabling Environments forAgribusinessandAgro-Industries Development:Regionaland Country Perspectives. Publishing Policy and Support Branch, Office of Knowledge Exchange, Research and Extension, FAO.
[16]
Gakige, J. K., Gachuri, C., & Goopy, J. P. (2020). Sweet Potato (Ipomoea batatas) Vine Silage: A Cost-Effective Supplement for Milk Production in Smallholder Dairy-Farming Systems of East Africa? Animal Production Science, 60, 1087-1094.
[17]
Girard, A. W., Brouwer, A., Faerber, E., Grant, F. K., & Low, J. W. (2021). Orange-Fleshed Sweetpotato: Strategies and Lessons Learned for Achieving Food Security and Health at Scale in Sub-Saharan Africa. OpenAgriculture,6, 511-536. https://doi.org/ https://doi.org/10.1515/opag-2021-0034
[18]
Jones, D., Gugerty, K. M., & Anderson, L. (2012). Evans School Policy Analysis and Research: Sweet Potato Chain: Tanzania: EPAR Brief No. 211. The Agricultural Policy Team of the Bill and Melinda Gates Foundation.
[19]
Kagimbo, F. M., Shimelis, H., & Sibiya, J. (2018). Diversity Assessment of Sweetpotato Germplasm Collections for Yield and Yield-Related Traits in Western Tanzania. Acta Agriculturae Scandinavica, Section B—Soil & Plant Science, 68, 121-129. https://doi.org/10.1080/09064710.2017.1372516
[20]
Kavoo, A., Mwajita, R., Kariuki, L., & Kiirika, L. (2022). Appraisal of Determinants of Orange-Fleshed Sweet Potato Production and Utilization in Isiolo County, Kenya. AfricanJournalofFoodAgricultureNutritionandDevelopment,22, 19886-19908. https://doi.org/10.18697/ajfand.108.19887
[21]
Kibiki, C., Mutabazi, K. D., & Tairo, F. (2020). Profit Analysis of Virus Free Sweet Potato and Vine Multiplication by Smallholder Farmers in Selected Regions of Tanzania. InternationalJournalofAgriculturalEconomics,5, 99-105. https://doi.org/10.11648/j.ijae.20200504.12
[22]
Klein, A., Zapilko, M., Menrad, K., & Gabriel, A. (2009). Consumer Acceptance of Genetically Modified Rapeseed-Oil—A Discrete-Choice-Experiment (14 p.). Professorship for Marketing and Management of Biogenic Resources, University of Applied Sciences Weihenstephan.
[23]
Low, J. W., & Thiele, G. (2020). Understanding Innovation: The Development and Scaling of Orange-Fleshed Sweetpotato in Major African Food Systems. AgriculturalSystems,179, Article ID: 102770. https://doi.org/10.1016/j.agsy.2019.102770
[24]
Low, J. W., Ortiz, R., Vandamme, E., Andrade, M., Biazin, B., & Grüneberg, W. J. (2020). Nutrient-Dense Orange-Fleshed Sweetpotato: Advances in Drought-Tolerance Breeding and Understanding of Management Practices for Sustainable Next-Generation Cropping Systems in Sub-Saharan Africa. FrontiersinSustainableFoodSystems,4, Article No. 50. https://doi.org/10.3389/fsufs.2020.00050
[25]
Mburu, H., Cortada, L., Haukeland, S., Ronno, W., Nyongesa, M., Kinyua, Z. et al. (2020). Potato Cyst Nematodes: A New Threat to Potato Production in East Africa. FrontiersinPlantScience,11, Article No. 670. https://doi.org/10.3389/fpls.2020.00670
[26]
Mdoe, N., Boniface, G., & Magomba, C. (2022). Livestock, Crop Commercialization and Poverty Reduction in Crop-Livestock Farming Systems in Singida Region, Tanzania. DevelopingCountryStudies,1, 20-35. https://doi.org/10.7176/dcs/12-4-02
[27]
Mmasa, J. J. (2013). ValueAdditionPracticestoAgriculturalCommoditiesinTanzania:TanzaniaCountryLevelKnowledgeNetwork. CLKnet Policy Brief No. 20, Tanzania Global Learning Agency (TaGLA)-Linking the World through Learning.
[28]
Mwanga, R. O. M., Mayanja, S., Swanckaert, J., Nakitto, M., zum Felde, T., Grüneberg, W. et al. (2021). Development of a Food Product Profile for Boiled and Steamed Sweetpotato in Uganda for Effective Breeding. InternationalJournalofFoodScience&Technology,56, 1385-1398. https://doi.org/10.1111/ijfs.14792
[29]
Nabay, O., Koroma, M., Johnson, A. J., & Hinckley, E. S. (2020). Assessing the Likelihood of Adoption of Orange-Flesh Sweet Potato Genotypes in Sierra Leone. JournalofDevelopmentandAgriculturalEconomics,12, 50-58. https://doi.org/10.5897/JDAE2019.1117
[30]
Nankumbi, J., Grant, F. K. E., Sibeko, L., Mercado, E., Kwikiriza, N., Heck, S., & Cordeiro, L. S. (2023). Predictors of Vitamin A Rich Food Consumption among Women Living in Households Growing Orange-Fleshed Sweetpotatoes in Selected Regions in Uganda. FrontiersinPublicHealth, 10, Article ID: 880166. https://doi.org/10.3389/fpubh.2022.880166
[31]
Nhanala, S. E. C., & Yencho, G. C. (2021). Assessment of the Potential of Wild Ipomoea Spp. for the Improvement of Drought Tolerance in Cultivated Sweetpotato Ipomoea batatas (L.) Lam. CropScience,61, 234-249. https://doi.org/10.1002/csc2.20363
[32]
Nkomo, M., Shelman, M., & Connolly, J. A. (2014). African Agribusiness on the Move Editors’ Introduction. InternationalFoodandAgribusinessManagementReview,17, 5-7.
[33]
Okello, J. J., Shiundu, F. M., Mwende, J., Lagerkvist, C. J., Nyikal, R. A., Muoki, P. et al. (2021). Quality and Psychosocial Factors Influencing Purchase of Orange‐Fleshed Sweetpotato Bread. InternationalJournalofFoodScience&Technology,56, 1432-1446. https://doi.org/10.1111/ijfs.14822
Olynk, J. N., Tonsor, T. G., & Wolf, A. C. (2010). Consumer Willingness to Pay for Live-stock Credence Attribute Claim Verification. JournalofAgriculturalandResourceEconomics,35, 261-280.
[36]
Owade, J. O., Abong, G. O., & Okoth, M. W. (2018). Production, Utilization and Nutritional Benefits of Orange Fleshed Sweetpotato (OFSP) Puree Bread: A Review. CurrentResearchinNutritionandFoodScienceJournal,6, 644-655. https://doi.org/10.12944/crnfsj.6.3.06
[37]
Owuor, A. A., Otieno, D. J., Okello, J. J., Oluoch‐Kosura, W., & Dufour, D. (2024). Assessment of Consumers’ Preference for Orange‐Fleshed Sweet Potato Puree Chapati: A Case of Rural and Urban Consumers in Kenya. JournaloftheScienceofFoodandAgriculture,104, 4722-4728. https://doi.org/10.1002/jsfa.12734
[38]
Richard, K. J., Silayo, V. C. K., & Mrema, G. C. (2023). East African Journal of Agriculture and Biotechnology Performance Evaluation of Different Storage Technologies on Storage Stability of White-Coloured Sweet Potato Roots Under Farmers’ Conditions in Tanzania. EastAfricanJournalofAgricultureandBiotechnology,6, 369-377. https://doi.org/10.37284/eajab.6.1.1473.IEEE
[39]
Shumbusha, D., Shimelis, H., Laing, M., & Rukundo, P. (2020). Assessment of the Roles and Farmer-Preferred Traits of Sweetpotato in a Crop-Livestock Farming System in Rwanda: Implications for Breeding Dual-Purpose Varieties. OpenAgriculture,5, 834-843. https://doi.org/10.1515/opag-2020-0082
[40]
States, A. (2021). Effects of Adoption of Orange-Fleshed Sweet Potato Varieties on Farm Income and Output among Growing Households in Ebonyi and Abia States, Nigeria. Nigeria Agricultural Journal, 52, 377-383.
[41]
Tinyiro, S. E., Mayanja, S., Fliedel, G., & Forsythe, L. (2018). StateofKnowledgeforBoiled&FriedSweetpotatoinUganda. https://doi.org/ https://doi.org/10.18167/agritrop/00701
[42]
Umeh, S. C., Nenna, M. G., Onwubuya, E. A., & Azodo, L. N. (2024). Perception of Farmers towards Orange Fleshed Sweet Potato Production among Small-Scale Farmers in Edo State, Nigeria. Journal of Agriculture and Environmental Science Research, 5, 41-54.
[43]
Wafula, E., Malavi, D., Mbogo, D., Mwaura, L., Moyo, M., & Muzhingi, T. (2022). Proximate Composition and Vitamin a Contribution of Biofortified Orange Fleshed Sweet Potato Value Added Products. AfricanJournalofFood,Agriculture,NutritionandDevelopment,22, 20215-20230. https://doi.org/10.18697/ajfand.109.21605
[44]
Wangithi, C. M., Nyangaresi, A. M., Srinivasulu, R., Moyo, M., Muzhingi, T., & Kawarazuka, N. (2023). Consumer Willingness to Pay a Premium for Orange-Fleshed Sweet Potato Puree Products: A Gender-Responsive Evidence from Becker-Degroot-Marschak Experimental Auction among Low-and Middle-Income Consumers in Selected Regions of Nairobi, Kenya. FrontiersinSustainableFoodSystems,7, Article ID: 1114468. https://doi.org/10.3389/fsufs.2023.1114468
