1. Njoku, C., C.N. Mbah, O. Elom and J.O. Agwu, 2021. Effect of mechanic village activities on selected soil properties in Abakaliki Southeastern Nigeria. J. Agric. Ecol. Res. Int., 22: 10-16.
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2. Aja, D., C.C. Okolo, N.J. Nwite and C. Njoku, 2021. Environmental risk assessment in selected dumpsites in Abakaliki metropolis, Ebonyi State, Southeastern Nigeria. Environ. Challenges, Vol. 4. 10.1016/j.envc.2021.100143.
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3. Njoku, C., , J.N. Nwite, A.C. Nwogbaga, O.S. Akande and C.O. Enyioko, 2020. Efficiency of processed farm wastes on structure and oba super 11 grain yield on condemned oil stressed soil in southeastern Nigeria. Chiang Mai Uni. J. Nat. Sci., 10.12982/cmujns.2020.0019.
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4. Nnadi, E.O., C.N. Mbah, A.I. Nweke and C. Njoku, 2019. Physicochemical properties of an acid ultisol subjected to different tillage practices and wood-ash amendment: impact on heavy metal concentrations in soil and castor plant. Soil Tillage Res., 10.1016/j.still.2019.06.005.
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5. Nnadi, E.O., C.N. Mbah, A.I. Nweke and C. Njoku, 2019. Physicochemical properties of an acid ultisol subjected to different tillage practices and wood-ash amendment: impact on heavy metal concentrations in soil and castor plant. Soil Tillage Res., 10.1016/j.still.2019.06.005.
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6. Njoku, C. and B.C. Okoro, 2019. Effect of manure on physico-chemical properties of soil and the yield of cucumber (Cucumis sativus) in Abakaliki. Indian J. Ecol., 46: 60-64.
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7. Njoku, C., M.O. Alu, M.K. Okoro, J.O. Agwu and P.N. Ngene, 2018. Evaluation of selected physico-chemical properties and heavy metal content of ebonyi river for domestic use in abakaliki. Int. J. Dev. Sust., 7: 1495-1502.
8. Njoku, C., 2018. Soil physico-chemical properties as affected by flood and erosion in abakaliki southeastern Nigeria. J. Agric. Biol., 6: 321-326.
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9. Njoku, C., 2018. Physico-chemical analysis of water from some selected automobile repairing area in abakaliki southeastern Nigeria. Asian J. Agric. Biol., 6: 198-203.
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10. Njoku, C., 2018. Land use effect on soil properties in abakaliki southeastern Nigeria. Indian J. Ecol., 45: 122-125.
11. Njoku, C. and G.C. Okoro, 2018. Effect of different slums on selected soil properties in abakaliki southeastern Nigeria. Niger. J. Soil Sci., 26: 62-65.
12. Njoku C., M.O. Alu, O.C. Okafor and J.N. Nwite, 2018. Effect of abattoir wastes on selected soil properties in abakaliki and ezzamgbo southeastern Nigeria. Niger. Agric. J., 49: 198-205.
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13. Njoku C., M.O. Alu, A.J. Ajana, P.N. Ngene and I.J. Oduma, 2018. Effect of spent palm oil processing water on soil properties and maize yield in abakaliki. Int. J. Dev. Sust., 7: 2350-2357.
14. Alu, M.O., C. Njoku, O.C. Okafor and J.N. Nwite, 2018. Effect of abattoir wastes on selected soil properties in Ebonyi state Southeastern Nigeria. Indian J. Ecol., 45: 850-853.
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15. Nwite, J.N., C. Njoku and M.O. Alu, 2017. Effects of intercropped legumes with maize (Zea mays L.) on chemical properties of soil and grain yield of maize in abakaliki, Nigeria. Niger. Agric. J., 48: 105-112.
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16. Njoku, C., P.N. Agwu, B.N. Uguru and J.O. Agwu, 2017. Physioco-chemical properties of erosion site in abakaliki southeastern Nigeria. IOSR J. Environ. Sci. Toxicol. Food Technol., 2: 69-72.
17. Njoku, C., M.O. Alu, O.C. Okafor, J.N. Nwite and E.N. Uchewa, 2017. Water properties as influence by abattoir wastes in abakaliki and ezzamgbo southeastern Nigeria. Indian J. Ecol., 44: 500-503.
18. Njoku, C., J.O. Agwu, B.N. Uguru, T.S. Igwe and P.N. Ngene et al., 2017. Soil chemical properties and yield of cucumber as affected by rice husk dust, biochar and woodash applications in abakaliki, southeastern Nigeria. IOSR J. Applied Chem., 10: 61-66.
19. Njoku, C., J.O. Agwu, B.N. Uguru and C.N. Mbah, 2017. Influence of human urine on rice grain yield (Orzya sativa L.) and selected soil properties in abakaliki southeastern Nigeria. Int. J. Environ. Agric. Biotechnol., 2: 844-849.
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20. Njoku, C., I. Ibekwe, B.N. Uguru, J.O. Agwu and C.N. Mbah, 2017. Changes in selected soil physical properties and maize yields as affected by animal wastes application in southeastern Nigeria. Int. J. Environ. Agric. Biotechnol., 2: 850-854.
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21. Njoku, C., E.D. Inyang and J.O. Agwu, 2017. Soil physical properties and yield of cucumber as influenced by biochar, wood ash and rice husk dust application in A abakaliki, southeastern Nigeria. IOSR J. Agric. Vet. Sci., 10: 21-25.
22. Njoku, C., C.C. Nwali and O.F. Igwe, 2017. Effect of rice mill processing wastes on soil quality in abakaliki, southeastern Nigeria. IOSR J. Agric. Vet. Sci., 10: 15-20.
23. Njoku, C., C.C. Nwali and A.J. Ajana, 2017. Water qualities as affected by rice mill wastes in abakaliki southeastern Nigeria. IOSR J. Environ. Sci. Toxicol. Food Technol., 2: 65-68.
24. Njoku, C., 2017. Selected soil physical and chemical properties as affected by flood in abakaliki southeastern Nigeria. J. Agric. Soil. Chem., 1: 1-5.
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25. Njoku, C. and I. Ibekwe, 2017. Response of selected soil chemical properties and maize yields as affected by animal wastes application in abakaliki, southeastern Nigeria. Int. Res. J. Agric. Sci., 1: 1-6.
26. Njoku, C. and B.N. Uguru, 2017. Responses of selected soil chemical properties and heavy metals as affected by sewage dump soil in abakaliki southeastern Nigeria. Asian J. Plant Soil Sci., 2: 1-5.
27. Mbah, C.N., C. Njoku, C.C. Okolo and E.E. Attoe, 2017. Amelioration of a degraded ultisol with hardwood biochar: Effects on soil physico-chemical properties and yield of cucumber (Cucumis sativus L). Afr. J. Agric. Res., 12: 1781-1792.
28. Agwu, J.O. and C. Njoku, 2017. Assessment of the effects of solid waste disposal on ground water quality in selected tubewells and boreholes in Kano Metropolis North West Nigeria. IOSR J. Applied Chem., 10: 56-60.
29. Nwite, J.N., C. Njoku and E.N. Uchewa, 2017. Effects of cocoyam (Colocosia esculenta L.) planting densities of soil loss and yield in abakaliki, southeastern Nigeria. Niger. Agric. J., 48: 113-119.
30. Uguru, B.N., C. Njoku and C.N. Mbah, 2016. Influence of rice dust on exchangeable bases and acidity on an ultisol and maize growth in abakaliki, South Eastern Nigeria. Sci. Agric., 13: 156-162.
31. Njoku, C., B.N. Uguru and C.C. Chibuike, 2016. Use of biochar to improve selected soil chemical properties, carbon storage and maize yield in an ultisol in abakaliki Ebonyi State. Int. J. Environ. Agric., 2: 15-21.
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32. Njoku, C. and J.O. Agwu, 2016. Physico-chemiccal propperties and pollution potentials of soils under different uses in abakaliki southeastern Nigeria. J. Sci. Agric. Food Technol. Environ., 15: 16-21.
33. Njoku, C. and B.N. Uguru, 2016. Depth distribution and content of selected soil heavy metals in municipal waste dumpsites and non-dumpsites in abakaliki southeastern Nigeria. J. Sci. Agric. Food Technol. Environ., 15: 37-41.
34. Uguru, B.N., C.N. Mbah and C. Njoku, 2015. Effect of rice husk dust on selected soil physical properties and maize grain yield in abakaliki, south eastern Nigeria. Global Adv. Res. J. Agric. Sci., 4: 878-886.
35. Njoku, C., G.C. Okoro, T.S. Igwe, P.N. Ngene and A.J. Ajana, 2015. Evaluation of water sources in abakaliki for domestic uses. J. Agric. Eco., Res. Int., 2: 87-91.
36. Njoku, C., C.N. Mbah, P.O. Igboji, J.N. Nwite and C.C. Chibuike, 2015. Effect of biochar on selected soil physical properties and maize yield in an ultisol in abakaliki southeastern Nigeria. Global Adv. Res. J. Agric. Sci., 4: 864-870.
37. Njoku, C., B.N. Uguru and C.N. Mbah, 2015. Uses of rice husk to improve selected soil physical properties of tropical ultisol in abakaliki south eastern Nigeria. Adv. Agric. Biol., 4: 99-105.
38. Njoku, C., 2015. Effect of wastes on selected soil properties in abakaliki southeastern Nigeria. Int. J. Plant. Soil Sci., 4: 94-99.
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39. Njoku, C., 2015. Effect of waste dumpsites on water and air qualities in Abakaliki, Nigeria. Int. J. Plant. Soil Sci., 4: 455-460.
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40. Njoku, C., , B.N. Uguru and C.N. Mbah, 2015. Effect of rice husk dust on selected soil chemical properties and maize grain yield in abakaliki, south eastern Nigeria. Applied Sci. Rep., 12: 143-149.
41. Njoku, C. and P.N. Ngene, 2015. Evaluation of water qualities of ebonyi river for drinking purposes in abakaliki southeastern Nigeria. J. Agric. Eco., Res. Int., 2: 254-258.
42. Njoku, C. and P.N. Ngene, 2015. Comparative studies of soils in automobile repair and non-automobile repair sites in abakaliki, southeastern Nigeria. J. Sci. Agric. Food Technol. Environ., 14: 22-26.
43. Njoku, C. and G.C. Okoro, 2015. Effect of flooding on soil properties in Abakaliki South-Eastern Nigeria. Scholarly J. Agric. Sci., 5: 165-168.
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44. Njoku, C., 2014. Evaluation of heavy metal concentration of domestic water sources in abakaliki, southeastern Nigeria. Integr. J. Br., 1: 7-10.
45. Njoku, C. and P.N. Ngene, 2014. Waste and its management in Nigeria: Case study of abakaliki – Ebonyi State. J. Sci. Agric. Food Technol. Environ., 13: 8-18.
46. Njoku, C. and G.C. Okoro, 2014. Urban renewal in Nigeria: Case study of Lagos State. Int. J. Environ. Sci. Water Resour., 3: 144-148.
47. Okorie, A. and C. Njoku, 2013. Comparative assessment of selected chemical properties of soils in ivo, ohaozara and onicha L.G.As. of Ebonyi State, Nigeria. Greener J. Agric. Sci., 3: 97-100.
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48. Okonkwo, C.I., P. Arinzechukwu and C. Njoku, 2013. Changes in physical and chemical properties of soil in timber saw mill dumpsite. Br. J. Environ. Clim. Change, 3: 215-228.
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49. Mbah, C.N., I.A. Nweke and C. Njoku, 2013. Potentials Of Rice Wastes As Soil Amendment. In: Effect On Corn Growth And Changes In Selected Soil Chemical Properties. Bhart, P.K. and A. Chauhan, (Eds.). Discovery Publishing House PVT Ltd, New Delhi, India, Pages: 153–59.
50. Mbah, C.N., C. Njoku, P.N. Ngene and C.G. Oludare, 2013. Use of ash to improve the nutrient content of an ultisol and its effect on maize (Zea Mays L.) growth and dry matter yield. Int. J. For. Soil Erosion, 3: 118-121.
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51. Igwe, T.S., C. Njoku and T.E. Ogenyi, 2013. Effect of industrial emissions in atmospheric environment in south east Nigeria. New Era Res. J. Hum. Edu. Sust. Dev., 6: 1-7.
52. Okonkwo, C.I., C. Onyibe, J. Nwite, T.S. Igwe, C. Njoku and C.N. Mbah, 2012. Physical characteristics and maize grain yield in an ultisol in south eastern nigeria amended with four animal manures. Int. Res. J. Agric. Sci., Soil Sci., 2: 77-80.
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53. Njoku, C., P.N. Ngene and A.C. Nwogbaga, 2012. Assessment of selected heavy metals in sewage sludge disposal soils in abakaliki, southeastern Nigeria. Greener J. Phys. Sci., 2: 117-119.
54. Njoku, C. and P.N. Ngene, 2012. Content and distribution of heavy metals in an abandoned mechanic and non-mechanic sites in Abakaliki, Southeastern Nigeria. Greener J. Phys. Sci., 2: 16-19.
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55. Njoku, C. and C.N. Mbah, 2012. Effect of burnt and unburnt rice husk dust on maize yield and soil physico-chemical properties of an ultisol in Nigeria. Biol. Agric. Hortic., 28: 49-60.
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56. Njoku, C., T.S. Igwe and P.N. Ngene, 2011. ). Effect of flooding on soil physiochemical properties in abakaliki, ebonyi state Nigeria. Afr. J. Prof. Res. Hum. Dev., 7: 18-23.
57. Njoku, C., C.N. Mbah and C.I. Okonkwo, 2011. Effect of rice mill wastes application on selected soil physical properties and maize yield (Zea mays I.) on an ultisol in abakaliki southeastern Nigeria. J. Soil Sci. Environ.Manage., 2: 375-383.
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58. Mbah, C.N., F.I. Idike and C. Njoku, 2011. Accumulation of pollutants in an ultisol amended with burnt and unburnt rice mill wastes. J. Agric. Biol. Sci., 2: 43-47.
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59. Mbah, C.N., C. Njoku, F.I. Idike and K.N.N. Ezike, 2011. Potentials of rice wastes as soil amendment: Part 1: Effect on soil physical properties and maize (Zea mays l.) Yield. J. Agric. Biol. Sci., 2: 54-58.
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60. Njoku, C., 2010. Waste management in higher education sector: A case study of coventry university cardboard recycling. J. of Edu. Res.Polices, 5: 122-128.
61. Mbah, C.N., J.N. Nwite, C. Njoku, L.M. Ibeh and T.S. Igwe, 2010. Physical properties of an ultisol under plastic film and no-mulches and their effects on the yield of maize. World J. Agric. Sci., 6: 160-165.
62. Mbah, C.N., J.N. Nwite, C. Njoku and I.A. Nweke, 2010. Response of maize (Zea mays L.) to different rates of wood-ash application in acid ultisol in southeast Nigeria. Afr. J. Agric. Res., 5: 580-583.
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63. Mbah, C.N. and C. Njoku, 2010. Soil conservation and erosion problems in continuous food production. J. Environ. Res. Policies, 5: 25-33.
64. Igwe, T.S. and C. Njoku, 2010. Effect of human activities in ebonyi river, ebonyi state Nigeria. Int. J. Sust. Dev., 3: 26-30.
65. Nwite, J.N., C.N. Mbah, T.S. Igwe and C. Njoku, 2009. Prediction of productivity of spent lubricant oil uncontaminated and contaminated soil amended with organic wastes using modified productivity index in abakaliki, Nigeria. Nat. Sci., 7: 100-112.
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66. Njoku, C., 2009. Potential for green waste compost for use in waste recovery operations. Int. J. Soil Sci., 1: 89-95.
67. Ogbodo, E.N., C. Njoku and S. Akilo, 2008. Agricultural Meteorology. In: Manual Of Agricultural Practicals. Ezike, K.N.N. and P.I. Okpolu, FEGNO Press LTD, Abakaliki Nigeria, Pages: 299–314.
68. Njoku, C., 2008. The use of different types of organic waste for maintaining soil productivity. New Era J. Hum. Sust. Edu. Dev., 1: 131-136.
69. Njoku, C., 2008. Review of on-farm plant-residues composting: A case study of caton recycling glebe farm, sibson warwickshire, United Kingdom. Int. J. Environ. Res. Policies, 3: 1-4.
70. Njoku, C., 2008. Morphological and physico-chemical properties of soils in eziobodo imo state of Nigeria. New Era J. Eng. Sci. Technol., 1: 107-117.
71. Njoku, C. and L.M. Ibeh, 2008. Causes of climate change and its biological effects. Afr. J. Prof. Res. Hum. Dev., 10: 49-55.
72. Njoku, C. and C.N. Mbah, 2008. Content and distribution of organic matter in three soil profiles along a toposequence in owerri imo state. New Era J. Eng. Sci. Technol., 1: 9-17.
73. Njoku, C., 2007. Content and distribution of iron and aluminium oxides in three soils profiles along a toposequence in eziobodo, owerri area, Nigeria. J. Sci. Agric. Food Technol. Environ., 7: 7-13.
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