Journals:

1. Modupeola T.O., Okafor B.N., Oyatokun O.S and Ogheneovo I.E (2021). Influence of spacing regime and nitrogen application on yield of turmeric grown in rainforest –savannah transition zone of Nigeria. Journal of Research in Agriculture and Animal science 8(9): 9-13.

2. Lawal O.I., Olaniyan A.A., Okafor B.N., Ibe R.B., Alamu O.O., Olaiya O.A and Hameed L.A (2021). Agronomic evaluation of Citrus (Cleopatra mandarin) rootstock seedlings to various herbicides used in the nursery in Ibadan, Nigeria. Nigerian Journal of Horticultural Science 25(2): 128-133

3. O. Yomi-Owojori, N. O. Afolabi, A. H. Ekong and B. N. Okafor (2020). A Bayesian Approach on the Effect of Different Covariance Structures on Repeated Measures Data. Benin Journal Of Statistics 3:101– 115

4. Okafor B.N and Akinbola G.E (2020). Index based fertility evaluation of some basement complex soils for citrus production in Nigeria. Nigerian Journal of Horticultural Science 25(2): 1-7

5. Orimoloye J.R., Okafor B.N., Nkwocha H.U and Adamu I.D (2019). Soil assessment and fertility evaluation of selected sites for commercial arable cropping in Rivers State, Southern Nigeria. Specialty Journal of Agricultural Science 5(2): 25 -35.
6. Okafor B.N and Akinbola G.E (2018). Land Evaluation for Irrigated Citrus production. Nigerian Journal of Horticultural Science 23: 13 -21.

7. Okafor, B.N., Akinbola, G.E. and Oshunsanya, O.S (2018). Properties affecting erodibility of some soils developed from basement complex and alluvial parent material. Nigerian Journal of Soil and Tillage Research 4: 130 -138 

8. Olaniyan .A .A., Okafor .B.N., Lawal O.I., Amih C.A (2018). Influence of rate and frequency of application of urea on nutrient uptake of Citrus seedlings on a Sandy Loam soil. Nigerian Journal of Horticultural Science 23: 22-28 

9. Buji,I.B., Okafor B.N, Adamu .I. and Akinbola G.E (2017). Characterization of selected valley bottom soils in university of Ibadan, Ibadan Nigeria. Journal of Agriculture and Environment 13( 2): 169-180. 

10. Oyatokun O.S, Okafor B.N., Oluwasemire K.O and Adeoye G.O (2017). Properties of Some Soils Developed from Basement Complex Parent Material in a Savanna Zone of Nigeria and Their Effect on Soybean (Glycine max) American-Eurasian Journal of Agriculture & Environmental Science 17 (4): 280-283, 2017 

11. Onyegbule U.N., Okafor B.N., Ngbede S.O., Ohaneje .A., Usifo B.C. (2012). Response of Rough lemon Citrus Rootstock (Citrus Jambhiri (L) Lush) to Bulked organic manure Sources in Mbato, South Eastern Nigeria. Continental Journal of Agronomy 6(2): 33 -38.

12. Ajayi S.O., Adesanya B.O., Avwioroko A.O., Adebambo G.S., Okafor B.N (2012). Effects of long term fertilizer use on trace metal levels of soils in a farm settlement. Journal of Agricultural Research and Development.Vol 2(2): 44 – 51. 

13. Okafor B.N and Fabiyi A.O (2011). Application of Soil information in Nigerian Agriculture: A case study of some Horticultural Farms in Ibadan, Oyo State. Continental Journal of Agricultural Science 5(2): 31 -35.

14. Alamu O.O., Egberongbe K.R, Okafor B.N., and Olaniyan A.A. (2011): Weed dynamics in Citrus orchard as affected by organic manure and intercrops. International Journal of Agriculture 3(1): 83 – 88

15. Lawal O.I., Olaniyan A.A., Okafor .B.N., Chikaleke V.A., Odofin J.O. (2011). Growth and yield of sweet orange (Citrus sinensis (L) osbeck var (Agege 1) as influenced by organic – based fertilizer treatment on an Alfisol in Ibadan. Nigerian Journal Of Soil Science 21(1): 70 -74.

16. Makinde A.A., Afolayan S.O., Olaniyan A.A., Odeleye O.M.O., Okafor B.N., (2011): Effects of climate on citrus yield in Rainforest – Savanna transitional zone of Nigeria. Journal of Agriculture and Biological Sciences 2:9 – 12.

17. Oludare .O. Ariyo, Taofeek . O. Dauda, Abayomi . A. Olaniyan and Bernard .N. Okafor (2010). Autoregressive model of sweet orange (Citrus sinensis L. Osbeck) productivity in Ibadan. Reports and Opinion 2: 38 – 42.

18. Lawal O.I., Olaniyan A.A and Okafor B.N (2009). Nutrient uptake and fruit yield of sweet orange as affected by poultry manure and NPK fertilizer application in Ibadan, Nigeria. Journal of Applied Agricultural Research 1: 113 – 117.

19. Lawal O.I., Okafor B.N., Olaniyan A.A. (2009). Growth and Nutrient uptake of citrus rootstocks as affected by poultry manure and NPK fertilizer in Ibadan, South Western Nigeria. Nigerian Journal of Horticultural Science 14: 31 – 37.

Book Chapters 

20. Okafor B.N., Olaniyan A.A and Denton O.A (2021). Soil information as a factor to consider in sustainable crop production for nutritional security, poverty alleviation and biodiversity management in Africa. In: Babalola O.O (Ed). Food security and safety: African perspectives. Pp 315-329. Spinger Cham. http://10.1007/978-3-030-50672-8-18

21. Okafor B.N and Madukwe D.K (2021). Soil quality and horticulture: Implications for food security and safety in Nigeria. In: Babalola O.O (Ed). Food security and safety: African perspectives. Pp 287-297. Spinger Cham. http://10.1007/978-3-030-50672-8-18 

22. Okafor B.N and Yaduma J.J (2021). Soil and Agronomic Management for Cucumber Production in Nigeria [Online First], IntechOpen, DOI: 10.5772/intechopen.96087.

23. Lakshimi G., Okafor B.N and Donato V (2020). Soil micro arthropods and nutrient recycling. In: Fahad S et al. Environment, Climate, Plant and Vegetation growth. Pp 453-472. Springer cham. http://doi.org/10.1007/978-3-030-49732-3_18 

Conference Proceedings/Seminars 

24. Okafor B.N and Alamu O.O (2022). Soil conservation and citrus seedlings production. Proceedings of 40^th Annual Conference of Horticultural Society of Nigeria. pp 355-358. 

25. Okafor B.N (2021). Subsoil constraints, their management for horticultural crops production in Nigeria and their impact on citrus. Proceedings of 38^th Annual Conference of Horticultural Society of Nigeria. pp 1099-1103 

26. Okafor B.N., Aduramigba –Modupe V and Denton O.A (2020). Mapping of micronutrients status in soils under multivarietal Citrus sinensis production for precision agriculture. 1^st African Conference on Precision Agriculture. Pp184 -187. 

27. Okafor B.N., Adeoye P.O and Ebre V, O (2020). Managing soil loss in citrus and mango seedlings production. Proceedings of 38^th Annual Conference of Horticultural Society of Nigeria. pp 724-728 

28. Okafor B.N., Alamu O.O., Ikoro J.I., Chikaleke V.A and Oyewole B.O (2019). Early attainment of buddability in Citrus Seedlings in Nigeria: Challenges and Prospects. Proceedings of 37^th Annual Conference of Horticultural Society of Nigeria. 648- 652.

29. Akinyode E.T., Okafor B.N., and Akinleye O. C.(2019). Investigations into the Performance of Canary Melon in two soil types of Savannah transition ecology of Nigeria. Proceedings of 37^th Annual Conference of Horticultural Society of Nigeria. pp 693-697

30. Lukman F.B., Fabunmi T.O.,Okafor B.N and Abdul –Rafiu A.M (2019). Assessment of agronomic performance of Celosia and Tigernut intercrop in response to rates of poultry manure. Proceedings of 37^th Annual Conference of Horticultural Society of Nigeria. pp 843-848

31. Oyedeji, E. O, Chikaleke, V. A, Alamu, O. O, Okafor, B. N, Egberongbe, R. K, Ibe, R. B and Umeh, V. C (2019). Studies on the prevalence of Citrus leaf and fruit spots in major Citrus growing areas of Nigeria. Proceedings of 37^th Annual Conference of Horticultural Society of Nigeria. pp 1272-1276. 

32. Okafor, M., Olajide-Taiwo L.O and Monsur A.A (2018). Assessment of Growth Media for Vegetable Seed Germination Test for Aquaponic System. Proceedings of the 36th Annual Conference of Horticultural Society of Nigeria (HORTSON). pp 578 -582. 

33. Okafor B.N, Olaniyan A.A., Awodoyin R.O and Lawal I.O (2017). Use of Mucuna pruriens for soil management and weed control in a citrus orchard. Proceedings of 35^th Annual Conference of the Horticultural Society of Nigeria. Pp 679-684.

34. Ikoro J.I., Okafor B.N., Ajayi E.O., Oyewole B.O., Igbegwu F.C and Oso O.O (2017). Citrus seedlings performance in a Citrus –Legume Intercrop. Proceedings of 35^th Annual Conference of the Horticultural Society of Nigeria. Pp 486 – 489. 

35. Oladunjoye M.T., Okafor B.N and Yomi – Owojori T.O (2017). Geographic referencing of horticultural crops research sites for agro-technology transfer. Proceedings of 35^th Annual Conference of the Horticultural Society of Nigeria. Pp 732-735.

36. Yomi –Owojori T.O., Okafor B.N., Yaya O.S and Oladunjoye M.T (2017). Post hoc analysis of the performance of Citrus seedlings in the nursery. Proceedings of 35^th Annual Conference of the Horticultural Society of Nigeria. Pp 970 – 974.

37. Okafor B.N (2016). Soil carbon stock under some horticultural land use systems. Proceedings of 34^th Annual Conference of the Horticultural Society of Nigeria. Ishaya D.B., Dantata I.J and Tiku N.E (Eds). Pp 416 – 419. 

38. Adesina G.O.,Okafor B.N.,Onwuka M.I.,Amujoyegbe B.J.(2011): Use of Effluents for dry season vegetable production in Nigeria. Paper presented at The Hebrew University of Jerusalem on December 20, 2011.

39. Onyegbule U.N., Ibekwe H.N., Ngbede S.O., Okafor B.N., Ohaneje. A. (2011). Effects of manual tillage and mulch on soil properties and growth of citrus rootstock (Rough Lemon). In: Ogunwolu E.O., Odiaka N.I., Onekutu .A. (Eds). Proceedings of 29^th Annual Conference of the Horticultural Society of Nigeri, July 24^th – 29^th, 2011. pp342 – 345.

40. Lawal O.I., Olaniyan A.A., Umeh V.C., Okafor B.N., Rosanwo .O. (2010). Fruits yield and losses in organic based Citrus orchard. In:Olabiyi T.I, Akanbi W.B.,Olaniyi J.O and Akinlade J.A (Eds.). Proceedings of 1^st Technical Workshop on Organic Agriculture. pp 72 -75.

41. Okafor B.N. and Akinbola G.E (2009). Land Evaluation for Citrus and mango production In Nigeria. In: Bala M.G., Auwalu B.M.,Manga A.A (eds). Proceedings of 27^th Horticultural Society of Nigeria conference, October 11- 16, 2009. pp 50 -54

42. Onyegbule U.N, Okafor B.N and Lawal O.I. (2009). Preliminary Investigation into the Use of Some Liming Materials for Management of Soil Acidity for Horticultural Crop Production. In: Bala M.G., Auwalu B.M., Manga A.A (eds). Proceedings of 27^th Horticultural Society Of Nigeria conference, October 11- 16, 2009. pp 44 -48

43. Olaniyan A .A., Okafor B.N., Lawal O.I., Amih C.A and Ojo A.T.(2009). Effect of nitrogen fertilizer application on Rough Lemon (Citrus jambiri (L) Lush) Citrus rootstock seedlings in the nursery. In: Bala M.G., Auwalu B.M., Manga A.A (eds). Proceedings of 27^th Horticultural Society Of Nigeria conference, October 11- 16, 2009. pp 44 -48

44. Lawal O.I., Olaniyan A.A., Umeh V.C., Okafor B.N., Rosanwo .O. (2009): Effects of organo- mineral fertilizers and farm sanitation on yield and fruit losses in citrus orchard. In: Bala M.G., Auwalu B.M., Manga A.A (eds). Proceedings of 27^th Horticultural Society Of Nigeria conference, October 11- 16, 2009. pp 274-272.

45. Okafor .B.N., Olufunmi O.O., Adeoye I. B., Denton O.A.,Kintomo A.A. (2008). Soil physical properties and citrus yield under three methods of weed control in a citrus orchard in South Western Nigeria. In: A.A. Sajo., K.N. Futuless and Neils J.S.(eds). Proceedings of 26^th Horticultural Society Of Nigeria, held at Adamawa State University, Mubi, Nigeria. October 26 – 30, 2008. Pp 95 – 97.

46. Okafor B.N. (2008): Soil survey information: The foundation of sustainable horticultural crop production and management in Nigeria. In: A.A. Sajo., K.N. Futuless and Neils J.S.(eds). Proceedings of  26^th Horticultural Society Of Nigeria, held at Adamawa State University, Mubi, Nigeria. October 26 – 30, pp 125 – 128.

47. Lawal O.I., Okafor B.N., Olaniyan A.A.., Odofin J.O., and Adeyemo P.O. (2008). Response of Citrus rootstocks varieties (Cleopatra mandarin and Rough Lemon) to different sources of fertilizer in the screen house. In: A.A. Sajo., K.N. Futuless and Neils J.S.(eds). Proceedings of 26^th Horticultural Society Of Nigeria, held at Adamawa State University, Mubi, Nigeria. October 26 – 30, pp 166 – 171.

Short Articles:

48. Okafor B.N (2020). Intercropping in Nigerian Citrus. Citrus industry Magazine June 2020 

Invited Papers. 

49. Okafor B.N and Ibe (2019). Improved nursery techniques for Citrus production. Oyedele O.O., Adebisi – Adelani O and Olajide – Taiwo F.B (Eds). Farmers Training workshop held at National Horticultural Research Institute 5 -6^th December, 2018.

50. Okafor B.N., Akinwumi G.S., Akinrinola A.O., Bamimore K., Effi M.O., Adeyemi A and Atim U.J (2019). Training and empowerment of unemployed youths on Citrus and Plantain/Banana value chain held at National Horticultural Research Institute April 12 -14th, 2019.

51. Okafor B.N (2019). Improved nursery techniques for Citrus production. Oyedele O.O., Adebisi – Adelani O and Olajide – Taiwo F.B (Eds). Farmers Training workshop held at Agricultural Development Programme Office Akure, Ondo State, June 10 – 12, 2019. 

52. Okafor B.N (2017). Good agricultural practices for Citrus production in Nigeria. Tree crop Farmers training workshop held at Ogbomosho, 22^nd – 24^th February, 2017. 

53. Okafor B.N. (2011). Post transplanting management of budded citrus seedling. Paper presented at The Monthly Technology Review Meeting of the Ondo State ADP held 6^th to 7^th June, 2011. Pp 1-7.

54. Okafor B.N (2007). Soil investigation in horticultural crop production. A case study of NIHORT, Ibadan. Paper presented at the 2007 monthly seminar series of the National Horticultural Research Institute (NIHORT), Ibadan.

Technical Reports

55. Orimoloye J.R and Okafor B.N (2014) Soil assessment for agricultural development in selected locations of NLNG operations in Rivers State . 25pp.

56. Adeoye G.O., Oluwasemire K.O., Adeoluwa O.O., Aduramigba V.O., Oni S.A., Gbadamosi O and Okafor B.N (2013).. Soil – crop specific fertilizers recommendation through multi – dimensional trials for maize (Zea Mays) and Rice (Oryza sativa). 99pp

57. Akinbola G.E and Okafor B.N (2012). Ecological survey of University of Ibadan/University College Hospital land, Igbo Ora.

58. Okafor B.N (2012). Survey of soil quality in four Local Government Areas in Kogi state. Federal Ministry of Environment. 24pp.