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Dr. Etim Johnson Umana

Associate Professor
Botany
umanaej@unical.edu.ng

I am a Phytopathologist/Mycologist, currently involved in using botanicals in the control of plant diseases; also investigating the effects of mycotoxins in human beings and animals and how to control and reduce the effects in food and feed stuffs. I am a member of many learned academic Societies which include Nigerian Society for Plant Protection (NSPP), Botanical Society of Nigeria (BOSON), Chemical Society of Nigeria(CNS), Biopesticides Society of Nigeria (BpSN), Nigerian Association of Petroleum Explorationist, Mycological Society of Nigeria. I have held many post of responsibilities, Sub-Dean, Faculty of Science, Remedial/Pre-degree Coordinator, Head, Department of Botany, University of Calabar, Pioneer Head, Department of Biological Sciences, Akwa Ibom State University, Secretary, Academic Brief committee, Akwa Ibom State University, Visiting Lecturer, Akwa Ibom State University, Chairman, Central time table committee, Akwa Ibom State University, Mkpat Enin, Akwa Ibom State.PROFILE OF ASSOCIATE PROFESSOR ETIM JOHNSON UMANA (PHYTOPATHOLOGIST/MYCOLOGIST)DEPARTMENT OF PLANT & ECOLOGICAL STUDIESFACULTY OF BIOLOGICAL SCIENCESUNIVERSITY OF CALABAR, CALABAR1. EMPLOYMENT HISTORYDate of First Appointment: 19th February, 1992Date of Assumption of Duty in University of Calabar: March 4, 1992.Date of Last Promotion / Upgrading: 1ST October, 2014.Position Institution DutiesAssociate Professor 2014 till date Department of Botany,University of Calabar, Calabar Head of Department, teaching, research, conducting practical classes and supervision of B. Sc, M.Sc. and Ph.D research projects and thesis.Senior Lecturer (2008) Department of Botany, University of Calabar, Calabar Department of Biological Sciences, Akwa Ibom State University, Ikot Akpaden (2010-2012 )- Sabbatical Teaching, research, conducting practical classes and supervision of B. Sc, M.Sc and Ph.D research projects and thesis. General administration as Sub-dean of Science and coordination of Pre-degree programme.Lecturer I (2005) Department of Botany, University of Calabar, Calabar Teaching, research, conducting practical classes, supervision of B. Sc, M. Sc and Ph.D research projects and theses. General administration as Sub-dean of Science and coordination of Pre-degree programme. Lecturer II (1997) Department of Botany, University of Calabar, Calabar Teaching, research, conducting practical classes, Supervision of B. Sc research projects Assistant lecturer (1992 ) Department of Biological Sciences, University of Calabar, Calabar.Teaching, research, conducting practical and supervision of B.Sc research projectsResponsibilities with Dates1. Head of Department of Botany University of Calabar, Calabar           2014 - 20162. Sub-Dean - Faculty of Science            2005-20093. Coordinator - Remedial /Predegree Programme 2006-20093. Member- Central Time Table Committee, University of Calabar 2005-20095. Time Table Officer- Department of Biological Sciences             1993-19976. Time Table Officer- Department of Botany 1997-20147. Chairman- Calabar University Students Electoral Commission (CUECO) 2009/20108. Vice Chairman- Faculty of Science Committee- International Journal of Natural and Applied Sciences - 2005 - 20099. Examination Officer Department of Botany 1993-199810. Project Coordinator-Department of Botany     1993-2010, 2013 - 201511. Seminar Coordinator 1993-200412. Academic Adviser- Department of Botany, University of Calabar 1994-200413. Staff Adviser: Faculty of Science Students Association, University of Calabar 2005-200914. Field Trip Coordinator: Department of Botany, University of Calabar 1996-2004.15. Visiting Lecturer: Akwa Ibom State University, Ikot Akpaden, Akwa Ibom State-(Sabbatical).                                                                         2010-201216. Member: Akwa Ibom state University Senate. 2010-201217. Visiting Lecturer (Adjunct): Akwa Ibom State University, Ikot Akpaden 2012-2015 18. Pioneer Head: Department of Biological Sciences, Akwa Ibom State University, Ikot Akpaden                                             2010-201219. Chairman: Central Time Table Committee, Akwa Ibom State University, Ikot Akpaden                                                            2010-201220. Vice Chairman : Local Organizing Committee 5th Annual Conference of Mycological Society of Nigeria 201221. Member: Contact Committee Biopesticides Society of Nigeria. - 201422. Acting Head: Department Of Botany, University of Calabar. - 2014- 201623. Member: University of Calabar Senate.  - 2014- 201624. Member: Central Admission Committee.  2005-2009, 2014- Present Date25. Member: Faculty of Science Appraisal and Promotion Committee 2005-2009, 2014-Present Date26. Member: Department of Botany Appraisal and Promotion Committee. 2008- Present DateCommunity Service1. Member: Field Trip for Survey of Medicinal Plants and Traditional Medicine Practices of the Benue Area of Nigeria. January 26-29, 2003.2. Secretary-Committee: For the Development of Academic Brief for the Establishment Akwa Ibom State University -2008-2010.3. Returning Officer: Presidential Election 2011- Bekwarra Local Government Area, Cross River State, Nigeria.4. Returning Officer: Senatorial and House of Representative Election 2011 -Obudu Local Government Area, Cross River State, Nigeria.5. Returning Officer State House of Assembly Election 2011 -Bekwarra Local Government Area, Cross River State, Nigeria.2. EDUCATIONIkono Ibom Comprehensive Secondary School, Uyo (WASC) 1975-1980University of Calabar, Calabar (B.SC) 1983-1987University of Ibadan, Ibadan (M.Sc) 1990-1991University of Calabar, Calabar (Ph.D ) 1998-20053. GRANTS/FELLOWSHIPS1. University of Calabar Research Grant 2000 (Comparative evaluation of chemical methods for the control of fungal pathogen of Gmelina arborea Roxb in Cross River State, Nigeria.2. University of Calabar TETFUND RESEARCH GRANT 2016 (The control of wet rot disease of Amaranthus and Okra in Calabar, Cross River State, Nigeria using some botanicals).4. AWARDS/HONORS1. Cross River State Scholarship (Secondary School). - 1976- 19802. Federal Government Scholarship (M.Sc.). - 1990/913. Award of Excellence National Association of Botany Students, University of Calabar. - 2013/20144. Award of Honour in Recognition of Achievement as the Head of Department National Association of Botany Students, University of Calabar. 2014/20155. Award of Honour     National Association of Botany Students, University of Calabar. 2011/20126. Award of Excellence as Best Head of Department (Botany)    National Association of Science Students.       2015/20167. Award of Recognition for your Contribution to the Student's Union Government    Student Union Government, University of Calabar.       2009/20108. Distinguish Service Award in Recognition of Outstanding Service and Contribution to the Development of our community,    Rotaract Club Cannan City (CB) Calabar.  2009/20109. Meritorious Service Award Department of Genetics and Biotechnology Student Association, University of Calabar. 10. Microbiology Merit Award 2005" as Sub-Dean of Faculty of Science,University of Calabar. 2004/200511. Award of Honour by National Association of Science Students as     Sub-Dean/Staff Adviser,    Faculty of Science University of Calabar, Calabar -    2008/200912. Honorary Award by Biological Science Students University of Calabar as    Sub-Dean/Staff Adviser, Faculty of Science University of Calabar. - 200813. Merit Award for Meritorious and Selfless Service to the building of an Elegant Student Unionism. Genetics and Biotechnology Students Association,     University of Calabar.GRADUATE STUDENT/POST-DOC/RESEARCH SCIENTIST MENTORING/ SUPERVISIONI have supervised Three MSc and two PhD Students and currently supervising two Msc and four PhD students.CONFERENCE ORGANISED: 1. mycological society of Nigerian conference - 2012                                               2. Biopeticide society of |Nigerian conference - 2015                                                        and 2016.PROFESSIONAL ASSOCIATIONS1. Member- Nigerian Society of Plant Protection (NSPP)2. Member-Botanical Society of Nigeria (BOSON)3. Member-Society of Agricultural Biologists (SAB)4. Member-Nigerian Environmental Society (NES)5. Member-Chemical Society of Nigeria (CSN)6. Member-Nigerian Association Petroleum Explorationists (NAPES)7. Member -Biopesticides Society of Nigeria (BpSN)8. Member, Mycological Society of Nigeria (MYCOSON)

Ebigwai, J. K., Edu, E. A., Umana, E. J. and Agaidaigho, A. (2012) In vivo evaluation of essential oil extract of six plants species and ivermectin on microfilaria of Simulium yahense. Journal of Natural Products and Plant Resources,2(2):306-309.


Anwana, E. D., Umana, E. J. and Lennox, J. A. (2012) Antimircobial potential of ten medicinal plants used by the Bokis, Cross River State, Nigeria. Medicinal and AromaticPlants1:106:doi 10 .4172/2167-0412. 1000106.


Udo, S. E., Osai, E. O., Umana, E. J., Markson, A. A. and Madunagu, B. E. (2013). Infection related changes in nutritional content fluted pumpkin (Telfaria occidentalis) infected by Diplocossum spicatum and control using plant extracts. International Journal of Research in Applied and Natural Sciences (IJRANSS), 1 (1), 29 – 35.


Umana, E. J., Akwaji, P. I., Udo, S. E., Markson, A. A., Okey, E. N. and Udo, I. J. (2014). Determination of pathogenicity of Choanephora cucurbitarum (Berkeley and Ravenel) Thaxt, amongst commonly cultivated vegetables in Calabar, Cross River State, Nigeria. International Journal of Phytopathology, 3(2):55 – 61.


Umana, E. J., Akwaji, P. I., Ekpenyong, E. M., Okon, E. I. and Aruga, B. A. (2014). Effect of crude oil polluted soil in morphological growth of Phaseolus vulgaries (L). Journal of Life Sciences Research and Discovery 1, 14 – 18.


Umana, E. J., Akwaji, P. I., Ekpenyong, E. M. and Okon, E. I. (2014). Suppression of Fusarium wilt of tomato by organic soil amendment. Journal of Life Sciences Research and Discovery 1, 5 – 9.


Akwaji, P. I., Umana, E. J. and Okon, E. I. (2016). Phytochemical and Antifungal activity of Leaf extracts of Corchorus olitorius and Gongronema latifolium on Fungi Associated with Post-Harvest Deterioration on Maize (Zea mays) Seeds in Oban Community, Nigeria. World Scientific News, 53(3):157 - 177


Markson, A. A., Akwaji, P. I. and Umana, E. J. (2017). Mushroom Biodiversity of CrossRiver State National Park (Oban Hills Division), Nigeria, World Scientific News, 65:59 - 80.


Markson, A. A., Amadioha, A. C., Omosun, G., Ukeh, D., Udo, S. E., Umana, E. J. and Madunagu, B. E. (2011). Control efficiency of Botryodiplodia theobroma(PAT) by essential oil of Afromomum melengueta (K. Schum) seed from south south Nigeria. International Journal of Agricultural Research. ISSN: 2006 – 1730: 88 – 92.


Markson, A. A., Amodioha, A. C., Omosun G., Madunagu, B. E., Udo, S. E. and Umana, E. J. (2012) . Control of Botryodiplodia theobromae causing tissues rot of white yam (Discoreae rotundata Poir). Scholarly Journal of Agricultural Science, 1: 1-7.


Umana, E. J., Akwaji, P. I., Markson, A. A., Udo, S. E. and Orok, E. E. (2014). Phytochemical composition antimicrobial effect of Azadirchta indica and Carica papaya extracts on fungi isolated from Gmelina arborea seedlings. International Journal of Phytopathology, 3(3), 109 – 115.


Udensi, O., E. J. Umana, E. A. B. Edu and E. V. Ikpeme (2011). Screening locally Pulses for proximate, anti-nutritive and mineral compositions. Indices for conservation and improvement. International Journal of Agricultural Research, 6(6):504-510.


Umana, E. J.; Akwaji, P. I.; Markson, A. A. and Udo, S. E. (2015). Gmelina arborea Roxb: Associated Mycoflora and Diseases in Cross River State, Nigeria. Global Journal of Science Frontier Research: C Biological Sciences 15(4 ver. 1.0) 1 -11.


E. J. Umana, S. E. Udo, A. A. Markson, E. N. Okey, N. A. Okon and E. M. Ekpenyong (2015). In-vitro effect of some commonly found botanicals on the growth and sporulation of Choanephora cucurbitarum (Berkeley and Ravenel). Journal of Biology, Agriculture and Healthcare, 5(11):111-119.


Umana, E. J, Akwaji, P. I and Markson, A. A (2016). Bioremediation of Spent Engine Oil Contaminated Soil by Using Fungus, Penicllium sp. International Letters of Natural Sciences, 59:82 - 91.


Okey, E. N; Akwaji, P. I; Umana, E. J and Markson, A. A (2015). In Vitro and In Vivo Biological evaluation of crude extracts of Discorea dumetorum and Psidium quajava leaves in the control of storage rot of Onion (Allium cepa L.) bulbs. International Journal of Pharmacology, Phytochemistry and Ethnomadicine 1, 81 - 92.


Umana, E. J., Akwaji, P. A., Udo, S. E., Markson, A. A., Okey, E. N., Akpan, J. B. and Effiong, P. F. (2014). Mycoflora associated with cocoa (Theobromae cacao) pods obtained in the field and their effects on seed nutritional contents. Journal of Agriculture and Crop Research, 2(12), 236 -241.


Umana, E. J., Akwaji, P. I., Markson, A. A., Udo, S. E. and Orok, E. E. (2014). Phytochemical composition antimicrobial effect of Azadirchta indica and Carica papaya extracts on fungi isolated from Gmelina arborea seedlings. International Journal of Phytopathology, 3(3), 109 – 115. Abstracted and Indexed in: Cited Factor, Google Scholar, CAB (cited 1times).


Markson, A. A., Omosun, G., Umana, E. J., Madunagu, B. E., Amadioha, A. C. and Udo, S. E. (2014). Differential response of Solanum L and Ipomea batatas to three rot pathogens. International Research Journal of Natural Science, 2(1), 40 – 51.


Markson, A. A., Umana, E. J., Udo, S. E., Omosun, G., Madunagu, B. E. and Osim, M. O. (2012) Tissue maceration and starch depletion caused by some rot pathogens of cassava (Manihot esculenta Cranz) International Journal of


Markson, A. A., Amodioha, A. C., Omosun G., Madunagu, B. E., Udo, S. E. and Umana, E. J. (2012) . Control of Botryodiplodia theobromae causing tissues rot of white yam (Discoreae rotundata Poir). Scholarly Journal of Agricultural Science, 1: 1-7.


Umana, E. J., Akwaji, P. I., Markson, A. A., Udo, S. E. and Orok, E. E. (2014). Phytochemical composition antimicrobial effect of Azadirchta indica and Carica papaya extracts on fungi isolated from Gmelina arborea seedlings. International Journal of Phytopathology, 3(3), 109 – 115.


Markson, A. A., Amadioha, A. C., Omosun, G., Ukeh, D., Udo, S. E., Umana, E. J. and Madunagu, B. E. (2011). Control efficiency of Botryodiplodia theobroma(PAT) by essential oil of Afromomum melengueta (K. Schum) seed from south south Nigeria. International Journal of Agricultural Research.


Udensi, O., Ikpeme, E. V., Markson, A. A., Edu, E. A. B., Umana, E. J. and Urua I. S. (2010) Selection of soybean genotypes using morphological markers. International Journal of Current Research, 7: 005-008.


Udo, S. E., Akwaji, P. I., Markson, A. A., Umana, E. J., Okey, E. N. and Asuquo, M. (2016). Parkia biglobosa Jacq (dawa-dawa): The threatened giant of the Guinea savanna of Nigeria (The Cross River State situation). Global Journal of Science Frontier Research, 16 (2 ver. 1.0).


Markson, A. A.; Umana, E. J.; Udo, S. E. and Akwaji, P. I. (2016). Chemical Pesticides: are they really necessary? Nigerian Journal of Biopesticides, 1:(1) 109 - 143.


Umana, E. J.; Markson, A. A.; Udo, S. E.; Okon, E. I. and Akwaji, P. I. (2016). Control of Post-Harvest Rot of Sweat Orange (Citrus sinensis) with Extracts of Plant Origin. Nigerian Journal of Biopesticides 1(1) 88 - 93.


Udo, S. E., Umana, E. J., Markson, A. A. and Okey, E. N. (2016). Control of Maize and Bean Weevils in Storage with Commonly Consumed Spices. Journal of Biopesticides and Agriculture. 3(1) 25 - 29.


Umana. E. J.; Akwaji, P. I.; Markson, A, A. and Udo, S. E. (2015). Phytochemical Constituents and In vitro Inhibitory Effect of ten Plant Extracts on Fungi associated with Gmelina arborea Roxb in Cross River State Nigeria. Journal of Biopesticides and Environment. 1:63 - 73.


Edelduok, E. G. and Umana, E. J. (2015). Nematodes as biocontrol agents of insect pests of plant. Journal of Biopesticides and Environment 1:80 - 88.


Andy, I. E.; Edu, G. S.; Bassey, I. U.; Markson, A. A.; Umana, E. J. and Udo, S. E. (2015). Biodegradation of paraquat. Journal of Biopesticides and Environment. 1:74 79.


Markson, A. A., Omosun, G., Madunagu, B. E., Amadioha, A. C., Udo, S. E., Umana, E. J. and Ekaluo, U. (2010). Growth response of Botryodiplodia theobromae to some environmental factors and its implication on yam storage.  International Journal of Natural and Applied Science, 5 (1 & 2): 11 – 15. Abstracted and Indexed in: DOAJ, Scirus, Ulrich, Google Scholar, Index Copernicus, Serial solutions, Research Gate, Epernicus, Mendeley, New Jour, Scribd, getCITED.


Umana, E. J.,Udo, S. E., Markson, A. A., Madunagu, B. E. and Omokaro, D. N. (2009). Influence of age and pH on the activity of pectinase in Fusarium induced Gmelina seedling rot. Nigerian Journal of Mycology,2(1): 198-208.Abstracted and Indexed in: African Journals Online (AJOL)


Madunagu, B. E., Udo, S. E., Umana, E. J., Markson A. A. and Bassey, I. (2007). Impact of rainfall on Colletotrichum leaf spot infection of cucurbits in Cross River State. Nigeria. Journal of, Agriculture Forestry and Social Sciences. 6(2) :116-124. Abstracted and Indexed in: African Journals Online (AJOL)


Madunagu, B. E., Udo, S. E., Umana, E. J. and Markson, A. A. (2007). Effect of Colletotichum leaf spot disease on growth parameters of Colocynthis citrillus and Cucurbita pepo. International Journal of Natural and Applied Sciences, 2(2):40-44. Abstracted and Indexed in: DOAJ, Scirus, Ulrich, Google Scholar, Index Copernicus, Serial solutions, Research Gate, Epernicus, Mendeley, New Jour, Scribd, getCITED


Umana, E. J.; Madunagu, B. E., Udo, S. E. and Markson, A. A. (2007). Time course of production of pectolytic enzymes by pathotypes of Choanephora cucurbitarum. International Journal of Natural and Applied Sciences 2(1): 49-52. Abstracted and Indexed in: DOAJ, Scirus, Ulrich, Google Scholar, Index Copernicus, Serial solutions, Research Gate, Epernicus, Mendeley, New Jour, Scribd, getCITED.


Udo, S.E., Madunagu, B. E.,Umana, E. J. Markson, A. A. and Obi-Abang, M. (2007). Biochemical alteration on Colletotrichum lindemuthianum-infected pumpkin (Cucurbita pepo). Journal of Agriculture, Forestry and Social Sciences (JAOFSS), 5(1): 120-125.   (Google Scholar, cited 2 times)  Abstracted and Indexed in: African Journals Online (AJOL)


Udo, S.E, Madunagu B. E., Umana, E. J., Markson, A. A. and Takon, I. (2006).The efficacy of extracts from four oil seeds and oil fruit as agents against pathogenic microbes in comparison with known antibiotics. Journal of Agriculture, Forestry and Social Sciences (JAOFSS), 4(2):119-125. (Cited 1 times) Abstracted and Indexed in: African Journals Online (AJOL)


Madunagu B. E., Udo, S.E, Umana, E. J., and Markson, A. A. (2005). Exploitation of Phanerogamic parasites and epiphytic plants for their medicinal value. Nigerian Journal of Plant Protection, 22: 17 – 23. (Google Scholar, cited 21 times). Abstracted and Indexed in: African Journals Online (AJOL)


Markson, A. A., Madunagu, B. E., Umana, E. J. Udo, S. E. (2005). A Survey and biocontrol of the post- harvest fruit rotting fungi of tomato. Nigerian Journal of Plant Protection 22: 122-131.  (Google Scholar, cited 38 times) Abstracted and Indexed in: African Journals Online (AJOL)


Umana, E. J., and Ikotun, T. (2000) Effect of pH on enzyme productivity by three pathotypes of Choanephora cucurbitarum. Global Journal of Pure and Applied Sciences 6(3) :413 – 416. Abstracted and Indexed in:         African Journals Online (AJOL)


Markson, A. A, Omosun, G, Umana, E. J, Amadioha, A. C and Udo, S. E (2017) Potency of Plant-based Fungicides against a Rot Pathogen of White Yam (Dioscorea rotundata Poir) Journal of Advances in Microbiology, 5(3): 1-9.


Umana, E. J, Akwaji, P. I, Ekpenyong, E. M and Hanson, P. I (2016). Control of Green Rot Fungus of Arachis hypogaea L. in storage using plant extracts. International Letters of Natural Sciences, 58: 77-84.


Akwaji, P. I., Umana, E. J. and Okon, E. I. (2016). Phytochemical and Antifungal activity of Leaf extracts of Corchorus olitorius and Gongronema latifolium on Fungi Associated with Post-Harvest Deterioration on Maize (Zea mays) Seeds in Oban Community, Nigeria. World Scientific News, 53(3):157 - 177.


Markson, A. A., Akwaji, P. I. and Umana, E. J. (2017). Mushroom Biodiversity of Cross River State National Park (Oban Hills Division), Nigeria, World Scientific News, 65:59 - 80.


Umana, E. J.; Akwaji, P. I.; Markson, A. A. and Udo, S. E. (2015). Gmelina arborea Roxb: Associated Mycoflora and Diseases in Cross River State, Nigeria. Global Journal of Science Frontier Research: C Biological Sciences 15(4 ver. 1.0) 1 -11.


E. J. Umana, S. E. Udo, A. A. Markson, E. N. Okey, N. A. Okon and E. M. Ekpenyong (2015). In-vitro effect of some commonly found botanicals on the growth and sporulation of Choanephora cucurbitarum (Berkeley and Ravenel). Journal of Biology, Agriculture and Healthcare, 5(11):111-119.


Umana, E. J., Akwaji, P. I., Markson, A. A., Udo, S. E. and Orok, E. E. (2014). Phytochemical composition antimicrobial effect of Azadirchta indica and Carica papaya extracts on fungi isolated from Gmelina arborea seedlings. International Journal of Phytopathology, 3(3), 109 – 115.


Umana, E. J., Akwaji, P. A., Udo, S. E., Markson, A. A., Okey, E. N., Akpan, J. B. and Effiong, P. F. (2014). Mycoflora associated with cocoa (Theobromae cacao) pods obtained in the field and their effects on seed nutritional contents. Journal of Agriculture and Crop Research, 2(12), 236 -241.


Markson, A. A., Omosun, G., Umana, E. J., Madunagu, B. E., Amadioha, A. C. and Udo, S. E. (2014). Differential response of Solanum L and Ipomea batatas to three rot pathogens. International Research Journal of Natural Science, 2(1), 40 – 51.


Markson, A. A.; Umana, E. J.; Udo, S. E. and Akwaji, P. I. (2016). Chemical Pesticides: are they really necessary? Nigerian Journal of Biopesticides, 1:(1) 109 - 143.


Umana, E. J.; Markson, A. A.; Udo, S. E.; Okon, E. I. and Akwaji, P. I. (2016). Control of Post Harvest Rot of Sweat Orange (Citrus sinensis) with Extracts of Plant Origin. Nigerian Journal of Biopesticides 1(1) 88 - 93.


Udo, S. E.; Umana, E. J.; Markson, A. A. and Okey, E. N. (2016). Control of Maize and Bean Weevils in Storage with Commonly Consummed Spices. Journal of Biopesticides and Agriculture. 3(1) 25 - 29.


Umana. E. J.; Akwaji, P. I.; Markson, A, A. and Udo, S. E. (2015). Phytochemical Constituents and In vitro Inhibitory Effect of ten Plant Extracts on Fungi associated with Gmelina arborea Roxb in Cross River State Nigeria. Journal of Biopesticides and Environment. 1:63 - 73.


Edelduok, E. G. and Umana, E. J. (2015). Nematodes as biocontrol agents of insect pests of plant. Journal of Biopesticides and Environment 1:80 - 88.


Andy, I. E.; Edu, G. S.; Bassey, I. U.; Markson, A. A.; Umana, E. J. and Udo, S. E. (2015). Biodegradation of paraquat. Journal of Biopesticides and Environment. 1:74 79.


Markson, A. A.; Akpan, J. B.; Anwan, E. E.; Umana, E. J.; Udo, S. E. and Akwaji, P. I. (2015). In Vitro Bioactivity of Aliunm sativum and Alium cepa extracts against some wound pathogens in Calabar, Cross River State, Nigeria. Journal of Biopesticides and Agriculture. 1:93 - 98.


Markson, A. A., Omosun, G., Madunagu, B. E., Amadioha, A. C., Udo, S. E., Umana, E. J. and Ekaluo, U. (2010). Growth response of Botryodiplodia theobromae to some


Markson, A. A., Omosun, G., Madunagu, B. E., Amadioha, A. C., Udo, S. E., Umana, E. J. and Ekaluo, U. (2010). Growth response of Botryodiplodia theobromae to some environmental factors and its implication on yam storage.International Journal of Natural and Applied Science, 5 (1


Markson, A. A., Omosun, G., Madunagu, B. E., Amadioha, A. C., Udo, S. E., Umana, E. J. and Ekaluo, U. (2010). Growth response of Botryodiplodia theobromae to some environmental factors and its implication on yam storage.International Journal of Natural and Applied Science, 5 (1, 2): 11 – 15.


Okey, E, N; Akwaji, P, I; Umana, E. J. and Markson, A. A. (2015). In Vitro and In Vivo Biological evaluation of crude extracts of Discorea dumetorum and Psidium quajava leaves in the control of storage rot of Onion (Allium cepa L.) bulbs. International Journal of Pharmacology, Phytochemistry and Ethnomadicine 1: 81 - 92


Okey, E.N, Akwaji, P.I Umana, E.J and Joy U. Omini (2015). Phytochemical screening and control of fungal diseases of Cocoa (Theobromae cacao L.) pod using extracts of plant origin. Agricultural and Bionutritional Research 1 (1): 20 - 27.


Akwaji, P. I, Okon, E. I, Umana, E. J and Markson, A. A (2016). Phytochemical and Antifungal Efficacy of Leaf and Stem Bark Extracts of Parkia biglobosa on Fungi Association with Seed Rot of Green Bean (Phaseolus vulgaries L.) in Akpabuyo, Cross River State, Nigeria, International Journal of Pharmacology, Phytochemistry and Ethnomedicine, 3:27 - 38.


Umana, E. J, Akwaji, P. I, Ekpenyong, E. M and Hanson, P. I (2016). Control of Green Rot Fungus of Arachis hypogaea L. in storage using plant extracts. International Letters of Natural Sciences, 58: 77-84.


Okey, E. N, Akwaji, P. I, Akpan, J. B, Umana, E. J and Bassey, G. A (2016). In vitro Control of Tomato (Solanum lycopersicum L.) fruit rot caused by fungi using two plant extracts. International Letters of Natural Sciences, 52:19 - 27.


Okey, E.N, Akwaji P.I, Umana E. J and Omini, J.U (2015). Phytochemical screening and control of fungal diseases of Cocoa (Theobromae cacao L.) pod using extracts of plant origin. Agricultural and Bionutritional Research 1(1), 20 - 27.


Okey, E.N, Akwaji, P.I, Umana, E.J and Omini, J.U (2015). Phytochemical screening and control of fungal diseases of Cocoa (Theobromae cacao L.) pod using extracts of plant origin. Agricultural and Bionutritional Research 1(1), 20 - 27.


Okey, E.N, Akwaji, P.I, Umana, E.J and Omini, J.U (2015). Phytochemical screening and control of fungal diseases of Cocoa (Theobromae cacao L.) pod using extracts of plant origin. Agricultural and Bionutritional Research 1(1), 20 - 27.


Akwaji, P. I, Okon, E. I, Umana, E. J and Markson, A. A (2016). Phytochemical and Antifungal Efficacy of Leaf and Stem Bark Extracts of Parkia biglobosa on Fungi Association with Seed Rot of Green Bean

No Results for Research Works done

Showing All Conferences Attended

5. Umana, E. J., Akwaji, P.I. Udo, S. E., Markson, A. A. and Okey, E. N. (2012) Suppression of Fusarium wilth of tomato by organic soil amendment in Calabar, Cross River State, Nigeria.
5thAnnual Conference Mycological society of Nigeria Calabar 23rd -27th September, 2012.
Start: Sunday 23rd September, 2012
End: Thursday 27th September, 2012
Madunagu, B. E., Udo, S. E. Umana, E. J. and Adung, E. A. (2003) Exploitation of phanerogamic parasites and epiphytic plants for their medicinal value. Chemical Society of Nigeria
26th Annual International conference Makurdi, Benue State, September, 22nd – 26th, 2003.
Start: Monday 22nd September, 2003
End: Friday 26th September, 2003
6. Umana, E. J., Markson, A. A, Udo, SE, Asuquo , Ekaluo, U. B; Udensi O. and Andy E. (2012). Growth response of tomato plant to the Fusarium oxysporum and Botryodplodia theobromae infection
5th Annual conference, Mycological Society of Nigeria, Calabar.
Start: Sunday 23rd September, 2012
End: Thursday 27th September, 2012
3. Ekpenyong, E. M.; Umana, E. J.; Markson, A. A.; Andem, A. B. and Ezuruike, F. C. (2015). The in vitro effect of extracts of Spondia mombin and Vitex donania on the growth and sporulation of Aspergillus niger. Biopesticides Society of Nigeria (BpSN
) 2nd Annual Conference, University of Calabar, Cross River State, 30th November - 3rd December 2015.
Start: Monday 30th November, 2015
End: Thursday 3rd December, 2015
Umana, E. J. Tunde Ikotun, Madunagu, B. E., Udo, S. E. and Ekaluo, U. B. (2003). Time course of production of pectolytic enzymes by pathotypes of Choanephora cucurbitarum. Chemical Society of Nigeria,
26th Annual International Conference, Makurdi, Benue State, September, 22nd – 26th, 2003
Start: Monday 22nd September, 2003
End: Friday 26th September, 2003
13. Udo, S. E., Madunagu, B. E., Umana, E. J. and Markson, A. A. (2008). Effect of Colletotrichum leaf spot on the net assimilation rate ( NAR) of Colocynthis citrillus and Cucurbita pepo. Botanical Society of Nigeria.
17th Annual Conference, Ebonyi State University, Ebonyi State.
Start: Sunday 16th March, 2008
End: Wednesday 19th March, 2008
4. Umana, E. J. Akwaji, P. I. Udo, SE; Markson, A. A. and Orok, E. E. (2013). Solvent influence potency effect of Azaderachta in and Carica papaya extracts on fungi isolated from Gmelina arborea seedlings.
6th Annual conference, Mycological Society of Nigeria Awka.
Start: Monday 10th June, 2013
End: Thursday 13th June, 2013
Umana, E. J., Ikotun, T., Madunagu, B. E. and Udo, S. E. (1998) Effect of pH on enzyme productivity by three pathotypes of Choanephora cucurbitarum Botanical Society of Nigeria (BOSON)
9th Annual Conference, University of Ilorin, Kwara State, Nigeria, July 26th-30th, 1998.
Start: Sunday 26th July, 1998
End: Thursday 30th July, 1998
19. Madunagu, B. E. Udo, S. E. and Umana, E. J. (2004 ) Occurrence and biological control of powdery mildew disease of cucurbits. Nigerian Society for Plant Protection,
31st Annual Conference University of Agriculture, Makurdi, Benue State, February, 22nd – 26th, 2004.
Start: Sunday 22nd February, 2004
End: Thursday 26th February, 2004
1. Okey, E. N., E. J. Umana, A. A. Markson and P. A. Okey (2012). Municipal Solid Waste characterization and management in Uyo, Akwa Ibom state Environment.Wessex Institute of Technology, New Forest, UK,
6th International Conference on Waste Management and the Environment.
Start: Wednesday 4th July, 2012
End: Sunday 8th July, 2012
7. Umana, E. J., Markson, A. A, Udo, S. E., Okey E. N. Udo, I. J. and Akwaji P. I. (2012). Determinate of Host range of Choanephora Cucurbitarum Beskley Ravenel and Thaxt among commonly cultivated vegetables in Calabar Cross River State
5th Annual Conference Mycological society of Nigeria, Calabar.
Start: Sunday 23rd September, 2012
End: Thursday 27th September, 2012
12. Madunagu, B. E., Udo, S. E., Umana, E. J. and Markson, A. A. (2008). Impact of rainfall on Colletotrichum leaf spot infection of cucurbits in Cross River State. Botanical Society of Nigeria.
17th Annual Conference, Ebonyi State University, Abakiliki, Ebonyi State.
Start: Sunday 16th March, 2008
End: Wednesday 19th March, 2008
14. Madunagu, B. E., Udo, S. E., Umana, E. J. and Adung, E. A. (2005). Exploitation of phanerogamic parasites and epiphytic plants for their medicinal values. Nigerian Society for Plant Protection.
32th Annual Conference. University of Port Harcourt, Port Harcourt, River State, Nigeria.
Start: Sunday 15th May, 2005
End: Friday 20th May, 2005
9. Markson, A. A., Udo, S. E., Umana, E. J. and Agba, M. B., (2012). Bone Healing plants of Obudu Local Government of Cross River State
5th Annual Conference Mycological Society of Nigeria.
Start: Sunday 23rd September, 2012
End: Thursday 27th September, 2012
Udo, S. E., Madunagu, B. E., Umana E. J. and Ibebunjo C. (2003). The efficacy of extracts from four oil seeds and oil fruit as anti-microbial agents in comparison with known antibiotics. Chemical Society of Nigeria,
26th Annual International Conferences, Makurdi, Benue State, September, 22nd – 26th, 2003.
Start: Monday 22nd September, 2003
End: Friday 26th September, 2003
11. Akpan, J. B., Markson, A. A, Udo, S. E., and Umana, E. J. (2012). Evaluation of Antimicrobial effects of Allium sativum and Allium cepa on some wound pathogens
5th Annual conference , Mycological Society of Nigeria.
Start: Sunday 23rd September, 2012
End: Thursday 27th September, 2012
18. Udo, S. E., Madunagu, B. E., Umana, E. J. and Markson, A. A. (2004). Biological control of Fusarium wilt disease of Lycopersicon esculentum. Nigerian Society of Plant Protection,
31st Annual Conference, University of Agriculture, Makurdi , Benue State. February, 22nd – 26th, 2004.
Start: Sunday 22nd February, 2004
End: Thursday 26th February, 2004
15. Umana, E. J., Madunagu, B. E., Udo, S. E. and Markson, A. A. (2005). Isolation of active ingredients from plants and their effect on fungi associated with Gmelina arborea Roxb. Nigerian Society for Plants Protection.
32th Annual Conference University of Port Harcourt, Port, Rivers State.
Start: Sunday 15th May, 2005
End: Friday 20th May, 2005
2. Markson, A. A.; Akwaji, P. I.; Umana, E. J.; Udo, S. E. Edelduok, C. N. (2015). Degradation of cellular structures of carrot (Daucus carota L.) by some rots pathogens. Biopesticides Society of Nigeria (BpSN)
2nd Annual Conference, University of Calabar, Cross River State.
Start: Monday 30th November, 2015
End: Monday 3rd December, 2012
17. Markson, A. A., Madunagu, B. E., Umana, E. J. and Udo, S. E. (2005). A survey and biocontrol of post- harvest fruit rotting fungi of tomato. Nigerian Society for Plant Protection.
32th Annual Conference, University of Port Harcourt. Port Harcourt, River State, May 15th -20th, 2005.
Start: Sunday 15th May, 2005
End: Friday 20th May, 2005
16. Udo, S. E , Madunagu, B. E., Umana, E. J. and Markson, A. A. (2005). Control of maize weevils in storage with commonly used spices. Nigerian Society for Plant Protection.
32th. Annual Conference, University of Port Harcourt, Port Harcourt, Rivers State, May 15th -20th, 2005.
Start: Sunday 15th May, 2005
End: Friday 20th May, 2005
Umana, E. J., Madunagu, B. E., and Udo, S. E. (1999) Effect of extracts from Carica papaya, Costus afar and Ocimum gratissimum on fungal pathogens of Gmelina arborea Botanical Society of Nigeria.(BOSON),
10th Annual Conference, Port Hacourt. Nigeria, July 25th – 29th, 1999.
Start: Sunday 25th July, 1999
End: Thursday 29th July, 1999
8. Umana, E. J., Udo, S. E., Markson, A. A, Okey E.N., Okon, E. I. and Madunagu, B. E. (2012). Post-harvest pathology of five Citrus species in Calabar, Cross River State, Nigeria
5th Annual conference, Mycological society of Nigeria, Calabar.
Start: Sunday 23rd September, 2012
End: Thursday 27th September, 2012
10. Andy, I. E. Madunagu, B. E. and Umana E.J. (2012). Antimicrobial effect of combining the extracts of Lasienthera africana (Beauv) and Hensia crinita (Afzel G. Taylor) with Ampicillin and Chloramphenicol (2012).
5th Annual Conference, Mycological society of Nigeria.
Start: Sunday 23rd September, 2012
End: Thursday 27th September, 2012
No Results for Grants/Awards Received