| 1 | Chikaodili Eziamaka Afam-Ezeaku, Raphael Nnajiofor Okigbo. (2026, July), "Use of Bioprotective Potentials of Lactobacillus spp. for the Control of Post Harvest Rot of Sweet Potato (Ipomoea batatas (L.) Lam.)", Journal of Advances in Food Science and Technology, Vol. 13, (Issue 1), pp 21-33 |
| 2 | RN Okigbo, OC Igboanugo. (2025, July), "CULTIVATION OF OYSTER MUSHROOM (Pleurotus tuberegium) USING LOAMY SOIL, MANURE AND RICE HUSK SUBSTRATES.", Nigerian Journal of Mycology, Vol. 17, pp 100 |
| 3 | Afam-ezeaku C, Okigbo R N. (2025, January), "The role of digital technologies in advancing plant pathology in Africa", Asian Journal of Plant and Soil Sciences |
| 4 | Afam-Ezeaku, C.E.; Okigbo, R.N. (2025, January), "The role of digital technologies in advancing plant pathology in Africa.", Unknown Journal or Publisher |
| 5 | RO Ezebo, RN Okigbo. (2024, November), "Biological control of post-harvest rot in water yam (Dioscorea alata L.) using antagonistic fungi", International Journal of Pathogen Research, Vol. 13, pp 101-116 |
| 6 | RO Ezebo, RN Okigbo. (2024, November), "Ethno-Botanical Study of Water Yam (Dioscorea alata L.) Tubers in Storage in the South-Eastern Nigeria", Asian Journal of Food Research and Nutrition, Vol. 3, (Issue 4), pp 1113-1130 |
| 7 | CL Anuagasi, RN Okigbo. (2024, July), "Ethno-Botanical Uses and Socio-Cultural Importance of White Yam (Dioscorea rotundata Poir.) in South-Eastern, Nigeria", Asian Journal of Research in Botany, Vol. 7, (Issue 2) |
| 8 | Chioma Lilian Anuagasi * and Raphael Nnajiofor Okigbo. (2024, July), "Ethno-Botanical Studies of Post-harvest Rot of White Yam (Dioscorea rotundata Poir.) in the Five South-eastern States of Nigeria", GSC Advanced Research and Reviews, Vol. 24, (Issue 1), pp 439–455 |
| 9 | Muonyelu E. Nkemakonam*, Okigbo N. Raphael, and Iroka F. Chisom. (2024, August), "ISOLATION, IDENTIFICATION AND CROSS-INFECTION OF PATHOGENS RESPONSIBLE FOR POSTHARVEST SPOILAGE IN YAM AND COCOYAM ACROSS MARKETS IN AWKA, ANAMBRA STATE NIGERIA", African Journal of Agriculture and Food Science (AJAFS), Vol. 7, (Issue 3), pp 225-239 |
| 10 | Okafor Maryrose Chikaosolu, Okigbo Raphael Nnajiofor. (2024, June), "Evaluation of Three Organic Agricultural Wastes as Substrates for Cultivation of Mushroom (Pleurotus Tuberregium Fr.)", International Journal of Advanced Multidisciplinary Research and Studies, Vol. 4, (Issue 3), pp 1318-1324 |
| 11 | Uche, J. I., Okigbo, R. N., and Ezika, C. F. (2024, January), "Comparative Phytochemical Analyses of Aspilia africana (Pers) C.D. Adams, Chromolaena odorata (L) King and H.E. Robinson and Gongronema latifolium (Benth)", International Journal of Microbiology and Applied Sciences, Vol. 3, (Issue 1) |
| 12 | RO Ezebo, RN Okigbo. (2024, November), "Biological control of post-harvest rot in water yam (Dioscorea alata L.) using antagonistic fungi", Int. J. Pathog. Res, Vol. 13, (Issue 6), pp 101- 116 |
| 13 | Odira Johnson Oledibe ,1 Ifeoma Bessie Enweani-Nwokelo , Raphael Nnajiofor Okigbo,1 and Adaeze Nnedinma Achugbu1. (2023, August), "Formulation of Fungal Media from Local Plant Materials", Advanced Gut & Microbiome Research |
| 14 | Okigbo, R N and Uwah, C. C. (2022, January), "Evaluation of pest and diseases affecting cultivated mushroom in Awka, Anambra State, Nigeria", Advances in Nutrition & Food Science, Vol. 7, (Issue 1), pp 83-87. |
| 15 | Okigbo, R. N., Okafor, S. P.. (2022, June), "Fungal flora of mechanic workshops and its bioremediation", International Journal of Agricultural Technology, Vol. 18, (Issue 2), pp 709-720 |
| 16 | RN Okigbo, CS Ugwu. (2021, November), "Neglected crops of Africa", Unknown Journal or Publisher |
| 17 | RN Okigbo, N Muonyelu, A Egwu. (2021, July), "Effect of using rice husk for cultivation of Pleurotus tuberregium (Fr.) Singer", Journal of Basic and Applied Research International, Vol. 27, (Issue 5), pp 1-10 |
| 18 | RN Okigbo, CL Anuagasi. (2021, June), "Diseases affecting mushrooms in Africa", Journal of Food Technology and Nutrition Science, Vol. 129, pp 2-10 |
| 19 | R. N. Okigbo, R. O. Ezebo1,*, C. M. Nwatu1, J. N. Omumuabuike2 and G. B. Esimai2. (2021, July), "A Study on Cultivation of Indigenous Mushrooms in South Eastern Nigeria", World News of Natural Sciences, Vol. 34, pp 154-164 |
| 20 | RN Okigbo, CF Anyaegbu. (2021, August), "Underutilized plants of Africa", Unknown Journal or Publisher, Vol. 13, (Issue 2), pp 34 - 49 |
| 21 | Okigbo, R. N., 2Anyaegbu, C. F.* and 3Dalafi, T. P.. (2020, July), "Pollution from Spent Engine Oil with their Bioremediation Potentials In Auto-Mobile Workshops in Awka, Anambra State, South Eastern Nigeria", Nig J. Biomed Engrg, Vol. 13, pp 39 - 44 |
| 22 | Okigbo, R. N., Ezebo, R. O. and Okoli, S. I.. (2020, May), "Phytochemical analysis of Xylopia aethiopica (Dun), Citrus limon (L.) and Allium sativum (L.) extracts and their effect on selected human pathogens", Advancement in Medicinal Plant Research, Vol. 8, (Issue 2), pp 35-42, |
| 23 | RN Okigbo, IA Nmeka. (2020, April), "Control of yam tuber rot with leaf extracts of Xylopia aethiopica and Zingiber officinale", Frontiers of Agriculture and Food Technology |
| 24 | Okigbo, R. N., Chukwuma, N. G. (2019, December), "Growth Pattern and Pests of the Mushroom Pleurotus tuber-regium (Fr.) Singer Found in Awka, Nigeria", CPQ Nutrition,, Vol. 3, (Issue 6), pp 1- 10 |
| 25 | R. N. Okigbo, C. L. Anuagasi, C. N. Nnoli. (2019, July), "Ethnobotanical Uses of Medicinal Plants for the Control of Diabetes and Hypertension", Journal of Community and Preventive Medicine, Vol. 2, (Issue 1) |
| 26 | RN Okigbo, JE Okigb. (2018, July), "Ethnostudy of mushrooms and establishment of pure culture of cantharellus species (Ero Umunwene) a newly discovered mushroom found in Ukwa-East, Abia State, Nigeria", International Journal of Agricultural Technology, Vol. 14, (Issue 4), pp 571-596 |
| 27 | Okigbo, R.N., Chukwuma, N.G, Ani, S.E. (2017, June), "FUNGITOXIC ATTRIBUTES OF CHROMOLAENA ODORATA AND MIMOSA PUDICA LEAF EXTRACTS ON THE PATHOGENS CAUSING YAM ROT", Nigerian Journal of Mycology, Vol. 9, (Issue 1), pp 94-104 |
| 28 | OKIGBO, R. N. ; *ANUAGASI, C. L. AND EZENWELU, C. L.. (2017, July), "CULTIVATION OF KING TUBER MUSHROOM USING CASSAVA ( ) PEELS, LOAMY SOIL AND THE COMBINATION OF CASSAVA PEELS AND LOAMY SOIL AS SUBSTRATES.", Nigerian Journal of Mycology, Vol. 9 |
| 29 | Okigbo, R.N., Anuagasi, C.L. Andezenne, A.. (2016, August), "ANTIMICROBIAL ACTIVITIES OF TELFAIRIA OCCIDENTALIS HOOK.F. AND ZINGIBER OFFICINALE ROSC. ON SOME CLINICAL ISOLATES.", Nigerian Journal of Mycology |
| 30 | RN Okigbo, PU Opara, CL Anuagasi. (2015, August), "Efficacy of extracts of water yam (Dioscorea alata) and aerial yam (Dioscorea bulbifera) peels in the control of white yam (Dioscorea rotundata) rot.", Unknown Journal or Publisher |
| 31 | Okigbo,R.N., Anuagasi,C.L. and Nwanna,C.R.. (2015, June), "CONTROL OF YAM ROT FUNGI WITH CRUDE EXTRACTS OF CHROMOLAENA ODORATAAND CYMPOBOGON CITRATUS.", Nigerian Journal of Mycology, Vol. 7, (Issue 1), pp 44-54 |
| 32 | Okigbo, R.N., Anukwuorji, C.A*.and Okafor, C.O.. (2015, August), "Assessment of mycotoxins occurrence inManihot esculenta, Irvingia gabonensis, Citrullus colocynthisin Awka, Anambra State", Mycotoxicology,, Vol. 2, pp 22- 27 |
| 33 | Raphael Nnajiofor Okigbo, Chijioke Maxwell Nwatu. (2015, January), "Ethnostudy and usage of edible and medicinal mushrooms in some parts of Anambra state, Nigeria", Natural resources, Vol. 6, (Issue 1), pp 79 |
| 34 | Okigbo R N, Anukwuorji, C A and Eguae C T. (2012, October), "CONTROL OF MICROORGANISMS CAUSING THE DETERIORATION OF YAM CHIPS WITH VERNONIA AMYGDALINA (L) AND ZINGIBER OFFICINALE (L).", Nigerian Journal of Mycology, Vol. 4, (Issue 1) |
| 35 | E.C. Mmeka R.N. Okigbo. (2010, February), "Biological control of rot-inducing fungi of water yam (Dioscorea alata) with Trichoderma harzianum, Pseudomonas syringae and Pseudomonas chlororaphis", Unknown Journal or Publisher |
| 36 | Raphael N Okigbo, Rachel E Okorie, Ramesh R Putheti. (2009, September), "In vitro effects of garlic (Allium sativum L.) and African basil (Ocimum gratissimum L.) on pathogens isolated from rotted cassava roots", Interciencia, Vol. 34, (Issue 10), pp 742-747 |
| 37 | RN Okigbo, CL Anuagasi, JE Amadi, UJ Ukpabi. (2009, September), "Potential inhibitory effects of some African tuberous plant extracts on Escherichia coli, Staphylococcus aureus and Candida albicans", Unknown Journal or Publisher, Vol. 6, (Issue 2), pp 34 - 491-96 |
| 38 | RN Okigbo, Ramesh Putheti, CT Achusi. (2009, March), "Post‐Harvest Deterioration of Cassava and its Control Using Extracts of Azadirachta Indica and Aframomum Melegueta", Journal of Chemistry, Vol. 6, (Issue 4), pp 1274-1280 |
| 39 | Raphael N Okigbo, CL Anuagasi, JE Amadi. (2009, February), "Advances in selected medicinal and aromatic plants indigenous to Africa", Journal of medicinal plants Research, Vol. 3 |
| 40 | RN Okigbo, EC MmekaAfrican Journal of Traditional, Complementary, and Alternative Medicines. (2008, April), "Antimicrobial effects of three tropical plant extracts on Staphylococcus aureus, Escherichia coli and Candida albicans", African Journal of Traditional, Complementary, and Alternative Medicines, Vol. 5, (Issue 3), pp 226 |
| 41 | RN Okigbo, UE Eme, S Ogbogu. (2008, December), "Biodiversity and conservation of medicinal and aromatic plants in Africa", Biotechnology and Molecular Biology Reviews, Vol. 3, (Issue 6), pp 127-134 |
| 42 | Ramesh Reddy Putheti, R N Okigbo, Madhusoodhan Sai advanapu and Sangeeta Chavanpatil. (2008, March), "Nanotechnology importance in the pharmaceutical industry", African Journal of Pure and Applied Chemistry, Vol. 2, (Issue 3), pp 027-031 |
| 43 | RN Okigbo, UO Ogbonnaya. (2006, May), "Antifungal effects of two tropical plant leaf extracts (Ocimum gratissimum and Aframomum melegueta) on postharvest yam (Dioscorea spp.) rot", African Journal of biotechnology, Vol. 5, (Issue 6) |
| 44 | RN Okigbo, AN Ajalie. (2005, January), "Inhibition of some human pathogens with tropical plants extracts Chromolaena odorata and Citrus aurantifolia and some antibiotics.", Unknown Journal or Publisher, Vol. 1, (Issue 1), pp 34-40 |
| 45 | RN Okigbo. (2005, February), "Biological control of postharvest fungal rot of yam (Dioscorea spp.) withBacillus subtilis", Mycopathologia, Vol. 159, (Issue 2), pp 307 |
| 46 | RN Okigbo. (2004, September), "A review of biological control methods for post harvest yams (Dioscorea spp.) in storage in South Eastern Nigeria", Unknown Journal or Publisher, Vol. 4, (Issue 1), pp 207 |
| 47 | Raph N Okigbo, Maria I Osuinde. (2003, February), "Fungal leaf spot diseases of mango (Mangifera indica L.) in Southeastern Nigeria and biological control with Bacillus subtilis", Plant Protection Science, Vol. 39, (Issue 2), pp 70 |
| 48 | R. N. Okigbo. (2003, September), "Mycoflora of tuber surface of white yam (Dioscorea rotundata poir) and postharvest control of pathogens with Bacillus subtilis", Unknown Journal or Publisher, Vol. 156, (Issue 2) |
| 49 | R N Okigbo. (2003, January), "Fungi associated with peels of post harvest yams (Dioscorea spp.) in storage", Global Journal of Pure and Applied Sciences, Vol. 8, (Issue 1), pp 19 - 24 |
| 50 | RN Okigbo, FEO Ikediugwu. (2001, July), "Biological control of tuber surface mycoflora of yams (Dioscorea rotundata).", Unknown Journal or Publisher, Vol. 41, (Issue 2), pp 85 - 89 |