Dr Sabbas N. Asoegwu
Agricultural engineering combines the disciplines of mechanical, civil, electrical, and chemical engineering with a basic understanding of physical and biological sciences and agricultural practices. It is a discipline concerned with solving the engineering problems of providing food, feed, fuel, fur and fibre for the people of the world. These problems include designing improved tools to work the soil and harvest the crops, as well as developing water supplies for agriculture and systems. Agricultural engineers design buildings in which to house animals or store grains. They solve problems of processing, packaging, transporting, and distributing the food and fibre products
The reason for the development of agricultural machines and systems is that everything about the agricultural production is physically demanding and working conditions are diverse. Machines help reduce drudgery, increase productivity, and enhance the power process and precision in, as well as the timeliness of, farming operations. With machines, there is an improvement in the quality of field operations and food products, reduction of losses and production costs. With the problem of peak labour demand, machines need to be designed to increase the power input into agriculture.
Asoegwu’s research is concerned with the development of prototype machines for solving different problems in agriculture such as: Egusi-Melon Washing Machine, Palm Fruit Digester, Rice Paddy Thresher, Self-Metering Poultry Feeder, Convective Dryer-Conveyor for Egusi-melon, Maize Sheller, Egusi-Melon Shelling Machine, Peanut Decorticator, Self-loading Cassava Grater, Christy Hunt Hammer Mill, Oscillating Feeder Conveyor, Groundnut Oil Extractor, Shear Test Box For Agricultural Products, African Breadfruit Decorticator, Spring-Loaded Slicing Machine, Vibratory Grain Sifter, Cassava Peeling and Washing Machine, Cold Press for Neem Oil, Carrot Washer, Biogas Digester, Tomato Grading Machine, Ginger Slicer, and Thermal Conductivity Measuring Instrument.
Asoegwu is also interested in the determination of the physical and frictional (flow) properties of agricultural materials and using them in the modelling of agricultural processes. These properties are necessary inputs in the design of several components of agricultural machines. Particle size and particle size distribution, play a significant role in flowability, bulk density, angle of repose and compressibility of granular solids. Properties such as bulk density, true density and porosity are useful in storage, transport and separation systems. The bulk density of granular materials plays an important role in the assessment of storage capacity, bag sizing, feeder design and theoretical evaluation of discharge rate from the hopper. The angle of repose affects the capacity of storage structures and is relevant to the design of chutes and conveyors. Frictional properties may be required in the design of storage structures, processing, and handling equipment and other applications.
Crop production is synonymous with tillage. Tillage affects it in so many ways. How tillage and soil dynamics influences crop production is of interest to Asoegwu and his co-workers.
Academic and Professional Qualification
- B.Sc., 1977, Agricultural Engineering, University of Nigeria, Nsukka
- M.Sc., 1981, Agricultural Engineering, University of Ife, Ile-Ife
- Ph.D., 2012, Agricultural Engineering, Federal University of Technology, Akure
Membership of professional bodies
- Member, Nigerian Institution of Agricultural Engineers (NIAE) 1979
- Member, Horticultural Society of Nigeria (HORTSON) 1983
- Member, Nigerian Society of Engineers (NSE) 1986
- Member, International Soil Tillage Research Organization (ISTRO) 1988
- Member, Council for Regulating Engineering in Nigerian (COREN) 1988
- Member, American Society of Agricultural & Biological Engineers (ASABE) 2002
- NDUKWU, M. C. and S. N. ASOEGWU. (2011). A Mathematical Model For Predicting The racking Efficiency Of Vertical-Shaft Centrifugal Palm Nut Cracker. Research in Agricultural Engineering. Vol. 57(3): 110 – 115. (http://agriculturejournals.cz/web/rae.htm)
- ASOEGWU, S. N., E. A. KIRIDI AND C. C. EMEKA-CHRIS (2011): Erosion and its environmental and Food Security Impacts in South-East Nigeria. PROC. NIAE 32nd p. 792 – 797
- ASOEGWU, S. N., G.U. IROAKAZI, L.A.S. AGBETOYE & A.S. OGUNLOWO (2011): Some Handling and Frictional Properties of African Breadfruit Seeds as a function of Moisture Content PROC. NIAE 32nd p. 639 – 653
- C. C. EMEKA-CHRIS; S. N.ASOEGWU, AND A. O. ASOEGWU (2011): Conserving Biodiversity for Food Security in Nigeria. PROC. NIAE 32nd p. 535 – 541
- ASOEGWU, S. N., L. A. S. AGBETOYE, and A. S. OGUNLOWO. (2010a). Modeling Flow Rate of Egusi-melon (Colocynthis citrullus) Through Circular Horizontal Hopper Orifice. Advances in Science and Technology (An African Journal for Research, Innovation and Discovery). Vol. 4(1): 35 – 44.
- ASOEGWU, S. N., L. A. S. AGBETOYE, and A. S. OGUNLOWO. (2010b). Flow Rate of African Breadfruit SeedsThrough Horizontal Orifices. Advances in Science and Technology (An African Journal for Research, Innovation and Discovery). Vol. 4(1): 66 – 71.
- NDUKWU, M. C. and S. N. ASOEGWU. (2010). Functional Performance Of A Vertical-Shaft Centrifugal Palm Nut Cracker. Research in Agricultural Engineering. Vol. 56(2): 77 – 83. (http://agriculturejournals.cz/web/rae.htm)
- ASOEGWU, S. N. and C. N. U. Eke (2009): The relationships between some physical properties and seed weight of jackbean seeds. PROC. 3rd WASAE & 9th NIAE INT. CONF. at OAU ILE-IFE. January 25 – 29, 2009: p. 256 – 259.
- EMEKA-CHRIS, C. C., S. N. ASOEGWU and G. O. UGWUEZE (2009a): Design of a rice-based eco-industrial village in S. E. Nigeria. PROC. 2nd Annual NIAE S.E. Regional Conference on Rice and Global Food Security held at Women Development Center Abakaliki, Ebonyi State on 16th – 18th September 2009.
- EMEKA-CHRIS, C. C., S. N. ASOEGWU and G. O. UGWUEZE (2009b): Design of a Center-point irrigation system for rice production in Nigeria. PROC. 2nd Annual NIAE S.E. Regional Conference on Rice and Global Food Security held at Women Development Center Abakaliki, Ebonyi State on 16th – 18th September 2009.
- ASOEGWU, S. N. and N. NWAGUGU (2008): The impact of global food crises and costs of food insecurity. PROC. 1st Annual NIAE S.E. Regional Conference on Global Food Crises: p. 67-79.
- ASOEGWU, S. N. and A. O. ASOEGWU (2008): Biodiversity conservation – an approach to food security. PROC. 1st Annual NIAE S.E. Regional Conference on Global Food Crises: p.80-92.
- ASOEGWU, S. N. and A. O. ASOEGWU. (2007). An Overview of Agricultural Mechanization and Its Environmental Management in Nigeria. Agricultural Engineering International: the CIGR Ejournal Invited Overview. Vol. IX. May, 2007.
- EKE, C. N. U., S. N. ASOEGWU and G. I. NWANDIKOM, (2007). Physical Properties of Jackbean Seed ( Canavalia ensiformis). Agricultural Engineering International: the CIGR Ejournal, Manuscript FP 07 014. Vol. IX. June, 2007.
- ASOEGWU, S. N. (2006): Improved Storage and Utilization of Agro-Industrial Raw Material in the South-East Zone. PROC. Refocusing Agro Industrial Raw Materials Processing in South East Zone of Nigeria. Eds. J.C. Adama, S. C. Obasi and A. P. Onwualu. p. 54 – 72
- ASOEGWU, S.N., S. O.OHANYERE, O.P.KANU and C.N. IWUEKE, (2006). Physical Properties of African Oil Bean seed (Pentaclethra macrophylla). Agricultural Engineering International: the CIGR Ejournal, Manuscript FP 05 006. Vol. VIII. August, 2006.
- ASOEGWU, S. N. (2005): Traffic-induced Compaction on Yield of Egusi-melon in Sandy Loam Soil of South-eastern Nigeria. PROC. NIAE. Vol. 27: 80 – 86.
- OGBONNA, A. I., S. N. ASOEGWU, and P. C. OKEBANAMA. (2004). Corrosion Susceptibility of Squeeze Cast Aluminum-Based Metal Composites. Journal of Corrosion Science and Technology. Vol. 1, p 62 – 65.
- ASOEGWU, S. N., A. I. OGBONNA, A. I.ONUCHUKWU and P. C.MADU, (2004). The Automobile Cooling System: The Effects of Antirust Agents. Journal of Corrosion Science and Technology. Vol. 1, p 92 – 95.
- ASOEGWU, S. N., A. O. OKORIE and U. N. KALU (2001): Optimal field operations machinery size and tractor power selection. PROC. NIAE Vol. 23 : 87 – 94.
- ASOEGWU, S. N. and K. G. OBI-MGAM (2003): Effect of parboiling time and moisture content on the shellability of African breadfruit (Treculia africana) seeds. PROC. NIAE Vol. 25 : 219 – 228.
- ASOEGWU, S. N. (2002). Influence of cooking time on the crackability of conophor nuts. J. of Agric. Engineering & Tech. 10: 48 – 58.
- ASOEGWU, S. N., A. O. OKORIE and C. I. OSSAI (2001): Cut and fill model for land development, using least square method. PROC. NIAE Vol. 23: 239 – 244.
- ASOEGWU, S. N. and J. O. MADUIKE (1999): Some physical properties and cracking energy of Irvingea gabonensis (Ogbono) nuts. PROC NIAE Vol. 22:131-137.
- ASOEGWU, S. N. (1999). Effects of Tillage Methods and Depth on Fuel Consumption and Profitability of Late Season Okra Production. Int. Agrophysics 13 (1) : 63 – 72.
- ASOEGWU, S. N. and A. I. OGBONNA, (1999). Corrosion Susceptibility of Some Metals in a Simulated Egusi-melon Mucilage Extractor Corrodent. Nig. Corr. J. Vol. 2 (Sept): 85 – 93.
- ASOEGWU, S. N., G. I. NWANDIKOM, and O. P. NWAMMUO, (1998). Some Mechanical Properties of Plantain Fruit. Int. Agrophysics 12 (2) : 67 – 77.
- ONYEWUCHI, V. C., J. O. DURU and S. N ASOEGWU (1997): Influence of slope steepness and concentrated run-off on soil erosion on sandy soils. PROC. NSAE Vol. 19: 234 – 241.
- ASOEGWU, S. N. and J. C. OBIEFUNA, (1997). Pineapple for Ground Cover Management and Erosion Control in S. E. Nigeria. Journal of Agricultural Technology. Vol. 5 (1) 46 – 50.
- ASOEGWU, S. N. (1996). Firmness and Stability of Plantain Fruits under Ambient Temperatures. Int. Agrophysics 10 (1): 37 – 41.
- ASOEGWU, S. N. and C. D. OKEREKE (1995). Effect of Peak Irrigation on Growth and Yield of Pawpaw (Carica Papaya) in Nigeria. PROC. NSAE Vol. 17: 163 – .175
- ASOEGWU, S. N. (1995). Bulk Density and Soil Moisture as Factors Influencing the Strength of Sandy Loam and Loamy Sand Ultisol. Discovery and Innovation. 7: 29 – 34.
- ASOEGWU, S. N. (1995). Some Physical Properties and Cracking Energy of Conophor Nuts at Different Moisture Contents. Int. Agrophysics 9 (2): 131 – 142.
- ASOEGWU, S. N. (1993). The Role of Agricultural Engineers in the Implementation of Rural Electricity Projects in Nigeria. PROC. NSE Conference, Kaduna, Nigeria, P. 135 – 151.
- ASOEGWU, S. N. (1992). Growth and Productivity of Egusi – Melon (Colocynthus Citrullus L.) as affected by Tillage. Agricultural Mechanization in Africa, Latin America and Asia. AMA 23 (1) 56 – 60.
- ASOEGWU, S. N. AND J. C. OBIEFUNA (1991). Tillage and Maize Stubble Management Techniques for Improved Late Season Okra Production. PROC. 12th ISTRO Conference, Ibadan, Nigeria, July 1991, P. 607 – 615.
- ASOEGWU, S. N. (1991). The Agricultural Engineer in the Technological Reform of Rural Communities in Nigeria. PROC. NSE Conference, Ibadan, Nigeria, Dec. 1991. P. 132 – 141.
- ASOEGWU, S. N., C. EKPE, and K.ADEBAYO (1991). Performance Evaluation of FUTO Digester. PROC. NSAE 15: 142 – 157.
- ASOEGWU, S. N. (1991). Effect of Vegetative Cover, Mulching and Planting Time on some Soil Physical Properties and Soil Loss in Pineapple Plots. Agricultural Mechanization in Africa, Latin America and Asia. AMA 22 (2): 39 – 34.
- ASOEGWU, S. N. (1991). Yield Response of Late Reason Plantain to Frequential Irrigation. The Nigerian Engineer. Vol. 26 (2). 1 – 12.
- ASOEGWU, S. N. and J. C. OBIEFUNA, (1990). Preliminary Evaluation of Pineapple Mixed-cropping Systems for protecting Reclaimed Gullies in the Tropics. An Experiment in S. E. Nigeria. Land Degradation and Rehabilitation Vol. 2 (3) 237 – 241.
- ASOEGWU, S. N. (1990). Braking Performance for Different Weight Ratios of Agricultural Tractor – Trailer systems. PROC. 10th International Conference of the ISTVS, Kobe Japan P. 671 – 686.
- ASOEGWU, S. N. (1990). Field Evaluation of Three Mulch Types for Water Erosion Control in Southeastern Nigeria. PROC. Erosion Ravages in South-Eastern Nigeria, FUTO., Owerri, Nigeria. May 1990. P. 156 – 167.
- ASOEGWU, S. N., G. I. NWANDIKOM and D. D. C. OKORO, (1990). Effect of Incorporated Crop Residue on the Mechanical Properties of an Ultisol of S. E. Nigeria, PROC. NSAE 14:176 – 183.
- NWANDIKOM, G. I. and S. N. ASOEGWU (1990). Physical Characteristics of Plantain Fruits (Musa AAB cv Agbagba). PROC. NSAE 14:233 – 245.
- Ag. Head of Department AGE 2012 – Date
- Ag. Director, FUTO Farms Ltd. 2010 – 2011
- Deputy Director, Center for Industrial Studies (CIS) 2007 – 2009
- Senate Member (representing Congregation) 2000 – 2009
- Ag. HOD Agricultural Engineering Department 1994 – 2000
- University Coordinator for Engineering Drawing 1989 – 2003
- Imo State Agricultural Development Corporation, Nekede Principal Agric. Engineering, GL.12 1987
- National Horticultural Research Institute, P. M. B. 5432, Ibadan, Senior Research Officer/Head of Mbato Station, GL. 10 1982 – 87
- Research Officer I, GL 09 1979 – 82
- Pupils Research Officer, GL. 08 1978 – 79