Determinants of Profitability of Sweet Potato Production in Camarines Sur, Philippines

Ma. Teresa B Lirag


Sweet potato has found its niche in the global market and is now outpacing other primary staple foods not only because of its desirability for human consumption but as an immediate source of income as well. A study was conducted to examine the factors affecting the profitability of sweet potato production in Camarines Sur, Philippines. Purposive sampling technique was used to select the 108 farmer-respondents. A structured questionnaire and focused group discussion were used as main tools for gathering data. Frequency counts, weighted means and percentages were used to describing and analyzing the socio-demographic data. Cost and return analysis and return on investment were used to determine the profitability of sweet potato production. The factors affecting the profitability of sweet potato production were also evaluated using multiple regression analysis. Results revealed that sweet potato production is generally profitable with the high financial return of 144% to farmers, or a net income of Php 48,400.00 pesos per hectare. There exist a positive relationship between income and farm size, labor input cost, cost of other inputs and access to buyers but inverse relationship exist between income and years of experience and tenurial status. Furthermore, farm size and cost of other inputs are significant variables that contribute to the increase in income. Recommendations include stabilizing the pricing system for sweet potato through the formation of production clusters to improve their market opportunities; provision of seminars and workshops on product development; provision of subsidies on agricultural inputs to reduce the cost of production; provision of basic and high-technology infrastructure; and establishment of an information network on the agricultural market.


sweet potato production; market channel; profitability; cost and return analysis; return on investment.

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Petsakos, Athanasios, Guy Hareau, Willy Pradel and Victor Suarez. 2016. Forecasting Potato and Sweetpotato Yields for 2050. International Potato Center (CIP) Lima, Peru. Working Paper 2016-1. 26p.

Oke, M.O. and T.S. Workneh. A review of sweet potato postharvest processing and preservation technology. African Journal of Agricultural Research Vol. 8(40), pp. 4990-5003, 17 October 2013. DOI: 10.5897/AJAR2013.6841 ISSN 1991-637X.

Fawole, O.P. Constraints to Production, Processing, and Marketing of Sweet-Potato in Selected Communities in Offa Local Government Area, Kwara State Nigeria. J. Hum. Ecol., 22(1): 23-25 (2007).

Fuglie, Keith O. Priorities for Sweetpotato Research in Developing Countries: Results of a Survey. HORTSCIENCE Volume 42, No. 5. Pp 1200–1206. 2007.

Noveria Sjafrina and Syarifah Aminah, "Consumers Preferences to Sweet Potato Flakes (Spf) from Sweet Potato Pasta as A Raw Material, with Enrichment Mung Bean Flour as Source Protein," International Journal on Advanced Science, Engineering and Information Technology, vol. 4, no. 3, pp. 181-184, 2014. [Online]. Available:

Khanh Thi Lan Phan, Sasivimon Chittrakorn, Huan Phan Tai and Khanitta Ruttarattanamongkol, "Effects of Cooking Methods on the Changes of Total Anthocyanins, Phenolics Content and Physical Characteristics of Purple-Fleshed Sweet Potato (Ipomoea batatas L.) Grown in Vietnam," International Journal on Advanced Science, Engineering and Information Technology, vol. 8, no. 1, pp. 227-233, 2018. [Online]. Available:

Okello JJ, Sindi K, and J Low. Consumer Perceptions and Demand for Biofortified Sweet potato-based Biscuit: The Case of Akarabo Golden Power Biscuit in Rwanda. African Journal of Food, Agriculture, Nutrition and Development. Volume 14 No. 3. May 2014. ISSN 1684 5374.

CIP International Potato Center. A CGIAR Research Center. Sweet potato gives hope: Ensuring climate-smart food systems, livelihoods, and resilience. 2014. Accessed on October 27, 2017, at

Rankine, Dale, Michael Taylor, Tannecia Stephenson Climate Studies Group, Mona CARIWIG Case Study Report 6 The impact of future climate change on sweet potato production. Accessed on October 27, 2017, at

Sweet Potato Facts and Figures. International Potato Center- A CGIAR Research Center./.

Selected Statistics on Agriculture. Philippine Statistics Authority. ISSN 2012-0362. August 2016.

Major Vegetables and Root crops Quarterly Bulletin, January-March, 2017. Philippine Statistics Authority. Accessed on June 30, 2017, at

Lirag, Ma. Teresa B. and Arthur B. Estrella. Adaptation Measures of Farmers in Response to Climate Change in Bicol Region, Philippines. International Journal on Advanced Science, Engineering and Information Technology. Vol 7, No 6 (2017).

Dina Rahmayanti, Rika Ampuh Hadiguna, Santosa Santosa and Novizar Nazir," Determining The Profit Margin In “Patchouli Oil” Supply Chain: A Case Study In Indonesia," International Journal on Advanced Science, Engineering and Information Technology, vol. 8, no. 2, pp. 483-488, 2018..

N. Muziwandile Gift. Analysis of marketing channels used by smallholder crop farmers in Vryheid (Abaqulusi) Municipality, KwaZulu-Natal. Unpublished Dissertation. 2014.

Costs and Returns of Sweet Potato Production. Philippine Statistics Authority. November 2014.

P.Samboko. An Assessment of Factors Influencing the Profitability of Bean Production in Zambia. 2011.

Arthur B Estrella, Vladimir R. Foronda, and Ma. Teresa B. Lirag. Socio-Ecological and Livelihood Assessment of Selected Coastal Areas in Sorsogon, Philippines. International Journal on Advanced Science, Engineering and Information Technology. Vol 5, No 4 (2015).

T. Naing. Determinants of Agricultural Productivity and Profitability in Myanmar. Casablanca, Morocco. June 13, 2015.

Lirag, Ma. Teresa B. and Georgina J. Bordado. Research and Development Trends and Information Needs in Organic Agriculture in the Bicol Region, Philippines. Asian Research Journal of Agriculture 2(4): 1-8, 2016; Article no.ARJA.30406.

Tiku N. E, Ele I. A.and Igbodor, F O. Gross margin analysis of sweet potatoes production in the in-land valleys of Obubra Local Government Area of Cross River State, Nigeria. Peak Journal of Agricultural Science Vol.3 (1), pp 1-6, February 2015. ISSN 2331-5784

Institute of Plant Breeding-Crop Science Cluster. Kamote or Sweet Potato Production with Cost Analysis.Agri by Mixph. January 21, 2016. Accessed on October 26, 2017, at

Lirag, Ma. Teresa B. Farmers’ Knowledge and Awareness on Pigeonpea (Cajanus cajan) in Camarines Sur, Philippines. Journal of Agriculture and Ecology Research International 9(2): 1-10, 2016; Article no.JAERI.27072 ISSN: 2394-1073.



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