Prof. OGBONNA Peter Ejimofor.

Department: Crop Science
Faculty: Agriculture
Designation : Professor
Email: ogbonna.peter@unn.edu.ng
Phone: 08037396307, 08057449534


Publications (Articles and Journals):

Journals
1. Ogbonna, P.E and Obi, I.U. (2000). Effect of poultry manure and planting dates on the growth and yield of Egusi melon (Colocynthis citrullus L) in the Nsukka plains of South Eastern Nigeria. Samaru J. Agric. Research.  Vol.16:63-74

2. Ogbonna,P.E and Obi, I.U. (2000). The influence of poultry manure application and plant density on growth and yield of Egusi melon (Colocynthis citrullus L) in the Nsukka plains of South Eastern Nigeria. Agro-Science J. Vol.1(1):122-129

3. Ogbonna, P.E (2000). The effect of weeding regime and plant density on the growth and yield of Egusi melon (Colocynthis citrullus L). J. of the Sci.ofAgric, Fd. Tech.& Environ. Vol.1(1): 103-107

4. Ogbonna, P.E. (2001). Performance of exotic and local varieties of sesame(Sesamum indicum L.) under irrigation in the Nsukka plains of southeastern Nigeria. Int. J. Agric. & Bio. Sci.Vol.1(1):19-21.

5. Ogbonna, P.E.and Obi, I.U.(2005). Inheritance of fruit colour and shape in Egusi melon (Colocynthis citrullus L.). J.Genet.&Breed.59:41-44.

6. Ogbonna, P.E and Obi,I.U.(2006).Expression of hybrid vigour in some yield attributes of Egusi melon (Colocynthis citrullus L).Bio- Research J. Vol. 4(1):48-50

7. Ogbonna, P.E and Obi. I.U.(2007).Performance of genotypes in crosses of Egusi melon(Colocynthis citrullus L). Agro-Science. Vol.6(1):17-24

8. Ogbonna, P.E.and Obi, I.U.(2007).Effect of time of planting and poultry manure application on growth and yield of Egusi melon (Colocynthis citrullus L) in a derived savannah agroecology. Agro-Science J. Vol.6(2):33-38.

9. Ogbonna, P.E.(2009). Heritability of seed components in Egusi melon (Colocynthis citrullus L). Seed Tech. Vol.31:37-42.

10. Ogbonna, P.E.(2009). Pod portion and type effects on sex, growth and yield in Fluted pumpkin. Afri. Crop Sci. J. Vol.16(3):185-190.

11.Ogbonna, P.E. (2009).Yield responses of Egusi melon (Colocynthis citrullus L.) to rates of NPK 15:15:15 fertilizer. Amer-Eur. J. Sustain. Agric. Vol.3(4):764-770.

12. Ogbonna, P.E. and Obi, I.U.(2010).Studies of gene effects on yield and yield components in Egusi melon (Colocynthis citrullus L.). Int. J. Plant Breed. Vol.5(1):54-57.

13. Ogbonna, P.E and Ogbonna, C.S.(2010). Fruit yield responses of eggplant (Solanum melongena) to single and combined application of organic and Inorganic fertilizers. Bio-Research.Vol.8(1): 633 - 637.

14. Ogbonna, P.E and Obi,I.U(2010). Variability of yield and yield components in Egusi melon (Colocynthis citrullus L.). Afri. Crop Sci. J.Vol.18(3):119-131.

15. Ogbonna, P.E and Odo, L.C.(2010). Efficiency of seed extraction methods in the control loss and low seed quality in Egusi melon (Colocynthis citrullus L.). J.of Hort. & Forestry. Vol.3(2): 58-62.

16. Ogbonna, P.E and Umar-Shaba Y.G. (2011). Yield responses of sesame (Sesamum indicum L.) to rates of poultry manure application and time of planting in a derived savannah agro-ecology of south eastern Nigeria.African Journal of BiotechnVol.10(66):14881-14887.

17. Ogbonna, P.E, Oluah , S.N, Jidere C and Okafor, F.C. (2012). Effect of de-oiled palm kernel cake based fertilizers on sole maize and cassava crops. African Journal of. Vol.11(20):4551-4557

18. Ogbonna, P.E and Umar-Shaba Y.G. (2012). Time of sowing affects the growth and yield of sesme in a derived savannah agro-ecology of south eastern Nigeria. The Philippine Agricultural Scientist. Vol. 95(2): 65-86.

19. Ogbonna, P.E and Ukaan S.I. (2012). Yield evaluation of 13 sesame (Sesamum indicum L.) accessions in a derived savannah agro-ecology of south eastern Nigeria. African Journal of Agricultural Research. Vol.6(43): 5772-5778.

20. Ogbonna, P.E and Umar-Shaba Y.G. (2012).Influence of poultry manure application on growth and yield performance of accessions of sesame (Sesame indicum L.) in a derived savanna transition zone of south eastern Nigeria. African Journal of Agricultural Research.Vol. 7(30): 4223-4235.

21. Solomon Ukaan and Peter Ogbonna (2012). Genetic variability and character association in sesame (Sesamum indicum L.) accessions. International Journal of Plant Breeding. Vol. 6(2):139-143.

22. Ogbonna, P.E and Nweze, N.J. (2012). Evaluation of growth and yield responses of cocoyam(Colocasia exculenta) cultivars to rates of NPK 15:15:15 fertilizer. African Journal of Agricultural Research Vol.(49): 6553 - 6561.

23. Maga, T.J, Uguru, M.I and Ogbonna, P.E. (2012). Variability and Correlation studies in agro- morphological traits of the aboriginal Nsukka yellow pepper(Capsicum annuum L.) genotypes. Nigerian Journal of Horticultural Sciences. Vol.17: 88 -102.

24. Onwughalu, J.T. and Ogbonna, P.E. (2013). Effect of different rates of poultry manure and NPK 15:15:15 fertilizer on the growth and yield of Solanum melongena L. “Ngwa Local”. International Journal of Applied Research and Technology. Vol. 2(11): 113-120.

25. Maga T.J; Uguru, M.I and Ogbonna, P.E.(2013). Variability and association studies in yield and yield characters in aromatic Nsukka yellow pepper (Capsicum annum L.). International Journal of Plant Breeding. Vol. 7(2). In press.

26. Ogbonna, P.E and Ukaan, S.I. (2013).Chemical composition and oil quality of seeds of sesame accessions grown in Nsukka plains of south eastern Nigeria.African Journal of Agricultural Research. Vol. 8(9): 797-803.

27. Ogbonna, P.E. (2013). Floral habits and seed production characteristics in “Egusi” melon (Colocynthis citrullus L). Journal of Plant Breeding and Crop Science. Vol.5(6): 137-140.

28.  Amuji, C.F, Uguru, M.I, Ogbonna, P.E,Ugwuoke, K.I, Eze, I.E and Mbadianya J.I. (2013).Isolation and identification of fungal pathogens associated with tomato genotypes/lines in Nsukka south eastern Nigeria. International Journal of Scientific Research. Vol.2: 5-8.

29.  Amuji, C.F, Ogbonna, P.E. and Uguru, M.I. (2013).Seasonal evaluation of advanced generations of interspecific hybrids of two solanum species in the derived savannah agroecology of south eastern Nigeria. Nigerian Journal of Crop Science. Vol. 1(1): 61-70.

30.   Ogbonna, P.E. and Orji, K.O.(2013). Evaluation of the growth and yield potentials of cultivars of cocoyam (Colocasia esculenta) in locations in south eastern Nigeria. Nigerian Journal of Crop Science. Vol. 1(1): 105-115.

31.  Onwudiwe, N, Benedict, O.U, Ogbonna, P.E and Ejiofor, E.E. (2014). Municipal solid waste and NPK fertilizer effects on soil physical properties and maize performance in Nsukka, southeastern Nigeria. African Journal of Biotechnology. Vol.13(1): 68-71.

32. Onwudiwe, N, Ogbonna, P.E., Onyeonagu, C.C., Ejiofor, E.E and Olajide, K. (2014). Composited municipal solid waste and NPK fertilizer effect on yield, yield components and proximate composition of maize. African J. of Agric. Res. Vol. 9(23): 1778-1786.

33. Ejiofor, E.E., Onwudiwe, N. and Ogbonna, P.E. (2014). The role of vermicompost in organic farming. Nigerian Journal of Research in Vocational and Technical Education. Vol. 1(1): 172-177.

34. Orji, K.O., Ogbonna, P.E and Eze, C.E. (2014). Evaluation of growth and yield responses of some taro (Colocasia esculenta) cultivars to plant spacing on the plains of Nsukka, southeastern Nigeria. International Journal of Science and Research(IJSR). Vol. 3(9): 1553-1557.

35. Orji, K.O and Ogbonna, P.E. (2015). Morphological correlation analysis on some agronomic traits of taro (Colocasia esculenta) in the plains of Nsukka, Nigeria. Journal of Global Biosciences. Vol. 4(1): 1120-1126.

36. Orji, K.O and Ogbonna, P.E. (2015). Effect of cultivars and NPK fertilizer on foliage and sucker production of taro (Colocasia esculenta (L)) on plains of Nsukka, Southeastern Nigeria. American-Eurasian J. Agric. & Environ. Sci. Vol. 15(2): 165-169.

37. Ogbonna, P.E., Orji, K.O., Nweze, N.J and Opata, P.I. (2015). Effect of planting spacing on plant population at harvest and tuber yield in taro (Colocasia esculenta L.). African J. of Agric. Res. Vol. 10(5): 308-316.

38. Eze, S.C., Ugwuoke, K.I, Ogbonna, P.E., Onah, R.N., Onyeonagu, C.C and Onyeke, C.C.(2015). Evaluation of indigenous technologies of fresh cocoyam (Colocasia esculenta(L)Schott) storage in southeastern Nigeria. African J. of Agric. Res. Vol. 10(8):737-741.

Conference Papers
39. Ogbonna, P.E.(2001).Effect of nitrogen fertilization on growth and yield of Egusi melon (Colocynthis citrullusL.). Proceedings of the 19th Ann. Conf. of Hort Soc.of Nigeria(HORTSON),UNN.May 28-June01,2001.p.146-150.

40. Ogbonna, P.E and Obi, I.U.(2005).Studies on heritability of yield and yield components in Egusi melon (Colocynthis citrullus L.). Proc. of the 30th Ann. Conf.of Genet. Soc. of Nig.(GSN). UNN,Sept.5-8,2005. p.60-66.

41. Ogbonna, P.E.(2008).Effect of combined application of organic and inorganic fertilizers on fruit yield of Eggplant (Solanum melongena).Proc. of the 42nd Ann.Conf. of Agric. Soc. of Nigeria.(ASN). Abakaliki, Nigeria,Oct.19-23. p.

42. Ogbonna, P.E and Ogbolu, P.O.(2010).Aspects of reproductive characteristics of Egusi melon (Colocynthis citrullus L.).Proc. of the 34th Ann. Conf. of Genet. Soc. of Nigeria, Ibadan, Nigeria. Sept.19-24, 2010. p. 22-27.

43. Ogbonna, P.E, Nweze, J.C and Echezona, B.C.(2010).Effect of time of planting on insect pest infestation on Egusi melon (Colocynthis citrullus L.). Proc.of the 44th Ann Conf. of Agric. Soc. of Nigeria (ASN).Ogbomosho, Nigeria.0ct. 2010. p.814-818.

44. Ogbonna, P.E.(2010). Cultivar response to NPK 15:15:15 fertilizer rates in taro(Colocasia esculenta). Proc. of the 44th Ann. Conf. of Agric Soc. of Nigeria(ASN),Ogbomosho, Nigeria Oct.  2010. p.1008-1011.

45. Ogbonna, P.E.(2010).Yield responses of Egusi melon (Colocynthis citrullus L.) to NPK 20:10:10 and 15:15:15 fertilizers. Proc. of the 44th Ann. Conf. of Agric Soc.of Nigeria,Ogbomosho, Nigeria. Oct. 2010. p.889-890.

46. Onwudiwe, N, Ogbonna, P.E. and Onyeonagu, C.C.(2013). Effect of composted municipal solid waste on growth and yield of maize (Zea mays L). Proc. of the 1st National Annual Conference of Crop Society of Nigeria, Univ. of Nigeria, Nsukka. September 2013. p. 114-117.

47. Orji, K.O, Ogbonna, P.E and Eze, C.E. (2013).Evaluation of growth and yield responses of taro (Colocasia esculenta) to NPK fertilizer rates on the plains of Nsukka in south eastern .Nigeria. Proc. of the 1st National Annual Conference of Crop Society of Nigeria, Univ. of Nigeria, Nsukka. September 2013. P. 118-123.

48. Amaefula, C, Agbo, C.U and Ogbonna, P.E. (2013). Assessment of tomato parents for production of improved fruit quality using combining ability effects. Proc. of the 1st National Annual Conference of Crop Society of Nigeria, Univ. of Nigeria, Nsukka. September 2013. p. 155-162.

49. Ekwere, E.O., Baiyeri, K.P and Ogbonna, P.E. (2014). Aspect of agronomic characterization of early growth of Tumeric germplasm. National Annual Conference of Genetics Society of Nigeria, Edo 2014. p. 496-504.

Books
1.    Eze, S.C and Ogbonna, P.E. (2011). Introduction to Crop Science. St. Anthony’s Publishers,Nsukka, Nigeria. 196pp.

2.    Nikejah Onwudiwe and Ogbonna, P.E. (2014). Effect of Solid Waste and NPK on Growth and Yield of Maize. Lambert Academic Publishing. Germany.




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