Investigation of The Effects of Yield On Selected Physical Properties of Cassava Tubers

Main Article Content

O. A. Adetola
O. J. Olukunle
T. L. Aremu


This research investigated the effect of some engineering properties (length, width, thickness, size, aspect ratio, surface area, sphericity, roundness, mass, volume, true density, bulk mass, bulk volume, bulk density, porosity, angle of repose and coefficient of static friction) on cassava biomass in relation to industrial processes. The results revealed that as the biomass increases the size, sphericity, bulk mass, length, width, thickness, aspect ratio, surface area, mass, volume, true density, bulk density, bulk volume and porosity increases whereas roundness, angle of repose and coefficient of static friction decreases as the biomass increases. There is significant difference between the biomass and the size, bulk mass, width, surface area, mass, volume and bulk volume whereas there is no significant difference between the biomass and the roundness, sphericity, length, thickness, aspect ratio, true density, bulk density, aspect ratio, coefficient of static friction and porosity. Correlation is significant at the 0.05 and 0.01 levels (2-tailed). Effects of yield on selected physical properties of cassava tubers had been investigated. The information provided in this research will be useful for farmers, engineers and energy providers who may wish to increase their biomass production capacity. Also, in the design of cassava implements and machinery for automation and mechanization of cassava tubers into useful products through the knowledge of the physical properties.

Article Details



Abowei M.F., Achinewhu S.C., Ademiliyu T and Fubara T.E. (2006). Effect of Variety on the Drying and Engineering Properties of Fermented Ground Cassava, NEAM 1(1): 80-96.

Afuwape, S.O., Ebeniro, C.N. and Njoku, D.N. (2010). Growth and yield of cassava as influenced by grain cowpea population density in South-eastern Nigeria. African Journal of Agricultural Research, 5:2778-2781.

Agodzo, S. K. and Owusu, F. A. (2002). Crop coefficient determination of a six-month variety cassava. Journal of Agricultural Engineering and Technology. 10: 1- 6.

Anikwe, M. A. and Onyia, V. N. (2005). Ecophysiology and Cultivation Practices of Arable Crops, New generation Publishers; Enugu, Nigeria. pp185.

Burum, S. (2004). American Cinematographer Manual (9th Ed.). ASC Press. ISBN 0-935578-24-2.

Dharamajah, A.H. and Cleasby, J. L. (1986) Predicting the expansion behaviour of filter media. Journal AWWA 78 (12) 66-76.

Esref, I. and U. Halil. (2007). Moisture-dependent Physical Properties of White Speckled Red Kidney Bean Grains. Journal of Food Engineering, 82: 209

Jongruaysup, S., Namwong, P. and Tiensiriroek, A. (2007). “Minimum Tillage for Cassava in Thailand,” in Cassava Research and Development in Asia–Exploring New Opportunities for an Ancient Crop, Proceedings of the 7th Regional Workshop, held in Bangkok, Thailand, Oct 28- Nov 1, 2002, pp. 251–263, CIAT, Bangkok, Thailand.

Kordylas, J.M. (2002). Processing and preservation of tropical and sub-tropical foods. Macmillan Education Ltd., London.

Mohsenin, N.N. (2010). Physical Properties of Plant and Animal Materials, 2nd Ed. Gordon and Breach Science Publishers, New York.

Olukunle, O.J. and Oguntunde, P.G. (2007). “Analysis of Peeling Pattern in an Automated Cassava Peeling Machine”, Nigerian Journal of Technological Development, 6 (1 & 2): 41-52.

Sahay, K. M. and Singh, K.K. (2005). Unit operations of agricultural processing.2nd Ed. Vikas Publishing Pvt. Ltd, New Delhi.

Tabatabaeefa, A. (2003). Moisture-dependent physical properties of wheat. International Agrophysics, 12: 207-211.

Taiwo, K. A. (2006). Utilisation potentials of cassava in Nigeria: The domestic and industrial products. Food Reviews International, 22, 29-42.

Teye, E., and Abano, E. E. (2012). Physical Properties of Two Varieties of Sweet Potato Grown in the Coastal Savannah Zone of Ghana. International Journal of Science and nature, 3 (1) 105-109.

Uthman, F. (2011). Design and fabrication of cassava lump breaking and sieving machine. Oasis Journal of Research and Development, 1(2): 42-50.

Zewdu, A. D. and Solomon, W. K. (2007) Moisture dependent physical properties of tef seed. Biosystems Engineering, 96(1): 57-63.