Name:                                                             OKOCHA, PETER IWUNOR

Nationality:                                                    Nigerian

Marital Status:                                               Married

Present Status:                                               Professor

Department/Unit:                                          Department of Agronomy, College of Crop andSoil Sciences



1.                  Educational Institutions Attended (with Dates):

(a) Preparatory Seminary, Ekpoma                       1971

(b) St. Paul’s Seminary, Benin City                                              1972-1975

(c) Federal School of Arts & Science, Victoria Island, Lagos                 1976-1978

(d) Methodist Boys High School, Lagos (Adult Education)                   1978-1979

(e) Patrice Lumumba’s People’s Friendship University,

     Moscow, Russia                                                                                   1980-1989


2.                  Academic/Professional Qualifications (with Dates)

(a) Ph. D (Plant Breeding and Seed Production)                                     1989

(b) M. Sc. (Agronomy)                                                                             1986

(c) WASC (First Division)                                                                        1975

(d) GCE O/L Six papers                                                                           1975

(e) GCE A/L Two papers                                                                          1978

(f) GCE A/L Three papers                                                                        1979



(a)    The Master’s Degree Project work titled “Investigation of wheat varieties of different ecological origin for use in breeding allocytoplasmic hybrids”, was carried out as a full time student of the Department of Genetics and Plant Breeding of the faculty of Agriculture, Patrice Lumumba’s Peoples’ Friendship University, Moscow. The project was successfully completed and defended with excellent grade. The University’s combined programme for the award of Master of Science degree was completed with distinction having given all examinations as follows:



            * Grades                                 Percentage

            * Excellent (A)                        -80%

            * Good            (B)                               -20%



–           Excellent (A)  –           100%


(b)   The Ph.D Degree project work, titled “Commercial and Biological Characters of Allocytoplasmic forms, hybrids and varieties of common wheat of different ecological and geographic origin” was basically a continuation of the master’s degree project workbut with deeper and muchwiderprogramme.  It was carried out as a full time postgraduate research work in the same University.  The experimental part of the research was carried out at the “All Union Institute of Genetics and Plant Breeding” Odessa, Ukraine and was part of the former Soviet Union Government’s registered research projects.


problems tackled

i.                    Production of reciprocal hybrids with the same nucleus but different cytoplasms

ii.                  Determination of the influence of different types of cytoplasm on plants’ ontogenesis.

iii.                The study of the effects of vernalization and photoperiodism on plant’s growth and development.

iv.                Peculiarities of leaf surface area formation and its relationship with the level of plant’s productivity.

v.                  Determination of the degree and character of the influence of cytoplasmic hereditary factors on the formation of quantitative characters.

vi.                The study of the influence of plasmogenes on the immunity of plants to diseases and pests damages.

vii.              Protein contents, starch and sugar contents, dynamics of filling and accumulation of green forage, bread quality.

viii.            Statistical analysis of massive experimental data (20,000 plants with evaluation of 19 characters from each plant), variability of quantitative characters and correlation among characters with the aid of computer.

ix.                Identification of hybrids and evaluation of wheat varieties through the method of electrophoresis.


(c)    Ph.D candidacy (minimum) examinations in plant breeding and seed production, philosophy and Russian Language were given with excellent (A) grades.

(d)   Lecture tutorials and laboratory classes for students were carried out in line with the University’s Programme.


3.         Certificate Courses

1.      Training workshop on cell and tissue culture techniques held at the Biotechnology laboratory, Department of Botany, University of Nigeria, Nsukka (UNN) 20th October to 2nd November, 1996.

2.      Training course on Computer applications, organized by the NUNet Committee, MichaelOkpara University of Agriculture, Umudike, Abia State from 4th – 11th March, 1998.

Post-doctorate/Sabbatical Leave Position

1.      Post Doctoral Fellowship: worked as a visiting fellow with the

West Africa Rice Development Association’s (WARDA) Rice Research

Programme based at the International Institute of Tropical Agriculture

(IITA), Ibadan in 1991.

2.      Sabbatical Leave – Department of Crop Science, Faculty of Agriculture and Wildlife Resources Management, University of Calabar, from November 1, 2006 to October 31, 2007.

3.      Sabbatical Leave – Department of Crop Science, Faculty of Agriculture, University of Uyo, Uyofrom June 1, 2013 to May 31, 2014.



1.      Previous Work Experience outside MOUAU:

a)  Nigerian Educational Research Council, Apapa, Lagos                         1976

b) National Provident Fund, Lagos                                                              1978-1980

c) National Cereals Research Institute (NCRI),Badeggi                             1990-1994

    Positions Held: Senior Research Office                                                   1990-1994

    Member,West Africa Rice Development Association’s

Lowland Rice Breeding Task Force             1992-1994

Member, West Africa Rice Development Association’s

  Upland Rice Breeding Task Force                                                             1993-1994


    Member, Nationally Co-ordinated Rice Evaluation Trial                        1991-1994

    Chairman, Nationally Co-ordinated Rice EvaluationTrial

    Report Writing Committee                                                                       1994


Work Experience in MOUAU:

a)      Acting Dean, College of Crop and Soil Sciences from July, 1997 – May, 1999 and from October 2008 to November, 2012.

b)      Acting Head of Department of Agronomy, from July, 1997 – October, 2000; and Oct. 2005 – August 31, 2006.



i.                    Senate member, Michael Okpara Univ. of Agric. Umudike, Feb. 1995 – Oct. 2002, from Oct. 2005 – August,2006, and from Oct. 2008 to November, 2012 and from May 2013 to date.

ii.                  Member, University Ceremonials Committee, 1994 – 2000

iii.                Chairman, Senate Welfare Committee, 1996 – 2005

iv.                Acting Chairman, sub-committee on Research Grants Monitoring, Jan. 1997 – Nov. 1998.

v.                  Member, Committee of Deans and Directors, July 1997 – May 1999 and from October 2008 to November, 2012.

vi.                Member, Farm Management Committee, July 1997 – May 1999.

vii.              Member, Senate Business Committee, April 1997 – Oct. 2002 and April 2006 – Aug. 2006.

viii.            Leader, Grains and Legumes Research Programme, Feb. 1998 – 2006

ix.                Member, Board of Trustees for the Staff Pension and Gratuity Scheme under the Unified Pension/Gratuity Scheme, Nov. 1997 – Dec. 2002.

x.                  Chairman and Member of College Appraisals Committee, 1995 – 2004 and from October 2008 to November, 2012an from 2013 to date.

xi.                Chairman, College Welfare Committee, 1994 – 1998

xii.              Chairman, College Farm Committee, 1995 – 1998.

xiii.            Member, Examination Malpractice Committee, April 2000 – July 2002.

xiv.            Member, Postgraduate School Board, 1997 – 2002, Oct. 2005 – Aug. 2006, and Oct. 2008 to November, 2012.

xv.              Member, Task Force to establish A Botanical Garden for Indigenous Food and Economic Crops.

xvi.            Member, Senate Special Committee on Consideration of Results, 2010 to November, 2012.



i.                    UNDP Consultant on the Amoba Community Poverty Alleviation programme, rice production component, Arochukwu, Abia State, 1997 – 1998.

ii.                  Collaborative research activity with Rivers State Agricultural Development Programme (RSADP), 1997.

iii.                Collaborative research activity with Ebonyi State Agricultural Development Programme (ESADP), 1997, 2000 – 2001 and 2010-2011.

iv.                Collaborative research withAnambra State College of Agriculture, Igbariam, 2000.

v.                  Collaborative research activity with National Cereals Research Institute, Uyo sub-station, 2000 – 2001 and 2010-2012.

vi.                Extension of modern rice production technology to Bountiful Harvest farmers in Afikpo, Ebonyi State from 2000 to 2004.

vii.              Collaboration with Agricultural Rejuvenation programme at Isuochi, Abia State, from 1996 – 2000.

viii.            Extension of modern rice production technology to rice farmers at Isuochi, Abia State – 2003.

ix.                More fish, More meat and More food. An NGO established to ensure adequate training, improved productivity and food security.



i.                  Member, Genetics Society of Nigeria (GSN)

ii.                 Member, Agricultural Society of Nigeria (ASN)

iii.                Member, Nigeria Society for Biological Conservation (NSBC)  

iv.                Member, Crop Science Society of Nigeria (CCSN)





i. Okocha, P. I. (1986).

Investigation ofwheat varieties of different ecological origin for use in breeding allocytoplasmic hybrids.M.Sc degree Thesis; Patrice Lumumba’s People’s Friendship University, Moscow, 126p.



ii. Okocha, P. I. (1989)

Commercial and biological characters ofallocytoplasmic forms, hybrids and varieties of common wheat of different ecological and geographic origin. Summary ofPh.D dissertation. 17p


iii. Okocha, P. I.  (1989)

Commercial and biological characters of allocytoplasmic forms, hybrids and varieties of common wheat of different ecological and geographic origin, Ph.D dissertation, Patrice Lumumba’s Peoples’ Friendship University, Moscow, 201p


Scientific/Learned Journals

  1. Okocha, P.I. (1999).  Peculiarities of nucleo-cytoplasmic interactions in allocytoplasmic forms of wheat. Global Journal of Pure and Applied Sciences 5(4): 431-435.
  2. Okocha, P.I. (2000).  The use of Gliadin Electrophoresis in wheat breeding programmes.Global Journal of Pure and Applied Sciences 3(3): 323-328.
  3. Okocha, P.I. and B.N. Singh (1995).Performance of some rice varieties and elite lines under on-station and on-farm research conditions, Journal of Inno. In life Sciences, 2: 77-80.
  4. Okocha, P.I., J.A. Akinremi and C.D. Umoh (1997).Screening of some rice breeding lines for tolerance to iron toxicity. Global Journal of Pure and Applied Sciences 3(3): 323-328.
  5. Okocha, P.I. and B.N. Singh (1997).Evaluation of some promising rice breeding lines for tolerance to iron toxicity. Global Journal of Pure and Applied Sciences. 4 (2): 117 – 120
  6. Okocha, P.I. (2003).  Screening for resistance to major diseases and pests of rice in the rainforest zone of south eastern Nigeria.  Journal of Applied Chemistry and Agricultural Research 9: 51-58.
  7. Okocha, P.I. (2000).  Selection of rice breeding lines for low-input management conditions.  Nigeria Journal of Agricultural Technology 9: 11-20.
  8. Okocha, P.I. and L.N. Chinatu (2004).Screening rice (Oryza sativa L) for drought tolerance in the rainforest agro-ecological zone of Southeastern Nigeria. Journal of Sustainable Tropical Agricultural Research 11: 89-92.
  9. D.A. Okpara and Okocha, P.I. (2001).  Growth, cane yield and sugar content of six genotypes of sugarcane in a forest zone of southeastern Nigeria.  Journal of Tropical Agriculture, Food, Environment and Extension, 2(2): 15-18.
  10. Njoku, J.C., Okpara, D.A. and Okocha, P.I. (2004).  Effects of Nitrogen and potassium fertilizers on dry matter accumulation in sweet potato in a humid tropical environment.  Journal of Sustainable Tropical Agricultural Research, 10: 106-111.
  11. Okocha, P.I. and A.C. Nwosu (2003).  Prospects for breeding low-input rice (Oryza sativa L) varieties in south eastern Nigeria. Journal of Agriculture and Food Sciences 1(2): 75-87.
  12. Eleweanya, N.P., M.I. Uguru, E.E. Ene-Obong and P.I. Okocha(2005).  Correlation and path coefficient analysis of grain yield related characters in maize (Zea mays L.) under Umudike conditions of south eastern Nigeria.  Journal of Tropical Agriculture, Food, Environment and Extension, 4(1): 24-28.
  13. Okocha, P.I., B.O. Nuga and C.O. Muoneke (2004).  Growth and development of rice under low-input technology.  Tropical and subtropical Agroecosystems 4(2): 85-95.
  14. Okocha, P.I., C.O. Muoneke and B.O. Nuga (2005).  Yield performance of rice under low input management. Nigerian Agricultural Journal, 36: 137-144.
  15. G.E. Nwofia, E.E. Ene-Obong and P.I. Okocha(2005).  Genotypic and phenotypic variability in cowpea grown in a humid environment in Nigeria.  Tropical Science, England 46(2): 82-86.
  16. Eleweanya, N.P., Okocha, P.I., Uguru, M.I. and Ene-Obong, E.E. (2006).  Field screening and selection of maize genotypes for acid tolerance in the humid rainforest zone of south eastern Nigeria. Journal of Agriculture and Food Sciences,  www.imsu-jafs.com 4(1): 1-17.
  17. Eleweanya, N.P., Uguru, M.I., Okocha, P.I. and Ene-Obong, E.E.. (2007). Heritability and variability studies of maize genotypes grown in the acid soils of Umudike in south eastern Nigeria.Journal of Sustainable Tropical Agricultural Research, 23: 20-29.
  18. Chinatu, L.N. and Okocha, P.I. (2006).  The prospect of increased production of Okra (Abelmoschusesculentus (L) Moench) through hetrerosis, Journal of Sustainable Agricultural Research,17: 66-71
  19. G.E. Nwofia, P.I. Okocha and E.E. Ene-Obong (2007).  Evaluation of cowpea genotypes for yield and yield components in humid condition.  Journal of Sustainable Agriculture and Environment 9(1):  32-41.
  20. Donald I. Osuigwe, G.C. Onuoha and P.I. Okocha (2007).  Evaluation of rice-fish culture in south eastern Nigeria. Journal of Fisheries International 2(2): 118-121.
  21. Okocha, P. I.and L. N. Chinatu (2008) Evaluation of okra cultivars and breeding lines for Agronomic traits in Umudike in southeastern Nigeria. Global Journal of Agricultural  Sciences 7(1): 11-15
  22. Okocha, P. I. (2008). Screening for drought tolerance in rice (Oryza sativa L.) at both the  vegetative and reproductive stages of growth. Global Journal of Agricultural sciences 7(2): 153 – 160.
  23. Afuape,, S. O,  Nwachukwu, E. C,  Nwauzor, E. C, Okocha, P. I.and Nwankwo, I.I. M., (2008) Use of polycross technique in development of hybrid sweet potato clones for resource poor systems. Global Journal of Agricultural Sciences 7(2): 201 – 205.
  24. Amadi, C. O. Ene-Obong, E. E., Okonkwo, J. C. and Okocha, P. I.  (2008). Genetic variation in yield and some important attributes of potato (Solanumtuberosum L.) grown under high ambient temperature. Nigerian Journal of Botany, 21(1): 145-157.
  25. Okocha,P. I. and Nuga, B. O. (2007). Effect of Low-input Management on  pest   damage to rice (Oryza sativa L.)  under natural infestation in Southeastern Nigeria.Journal of Agriculture and Food Scienceswww.ajol.info 5(1)1-10.
  26. E. E. Bassey, P. I. Okocha, M. J. Eka and C. I. Umechuruba (2008) Determination of general combining ability  of Okra (Abelmoschusesculentus (L.) Moench)  for production of hybrid varieties in tropical rainforest environment of Uyo in Southeastern Nigeria.  Journal of Research in Agriculture  5(4):  119-124
  27. Amadi, C. O., Ene-Obong,  E. E, Okonkwo, J. C and Okocha,  P. I.(2009).  Inter-   relationships between yield and yield attributes of potato grown under supra-optimal ambient temperatures. Global Journal of Pure and Applied Sciences, 15(1): 5-14.



  1. E. E. Bassey, P.I. Okocha, M.J. Eka and C.I. Umechuruba(2008).  Seasonal Effect of Morphological characters on the performance of seven varieties of Okra (Abelnoschusesculentus(F) Moench) in the humid tropical environment of Uyo, Nigeria.  International Journal of Food and Agricultural Research, 5(1): 178-189.
  2. E. E. Bassey, Okocha, P. I.,Eka, M. J., Umechuruba, C. I. and Ene-Obong, E. E.  (2008). Chemical Analysis of Fresh Okra fruits for nutritive value as an aid to breeding and selection of Okra in the humid tropical environment of Uyo in Southeastern Nigeria. Journal of Sustainable Tropical Agricultural Research.  27: 19-24.
  3. Amadi, C. O., Ene-Obong, E.E., Okocha, P. I. and Dung, E. A. (2008).  Path Analysis of yield of some Potato hybrids and their progenitors in Northern Guinea Savanna of Nigeria PAT. 4(2): 28-37.
  4. Okocha, P. I.(1998). The role of foreign cytoplasm in the reaction of wheat to vernalization and photoperiodism. Global Journal of Pure and Applied Sciences, 5(3): 299 – 302.
  5. Njoku, J.C., C. O. Muoneke, P.I. Okochaand F. Ekeleme(2009).  Effect of propagule size and intra-row spacing on the growth and yield of sweet potato in a humid agro-ecological zone.  The Nigerian Agricultural Journal, 40(1): 115-124.
  6. Njoku, J.C., C.O. Muoneke and P.I. Okocha (2010).  Effect of holding (storage) period of propagule size on the establishment and yield of sweet potato in a tropical ultisol. Journal of Sustainable Agriculture and the Environment 12(1): 43-56.
  7. Bassey, E.E., P.I. Okocha, M.J. Eka, C.I. Umechuruba and E.E. Ene-Obong. (2010). Studies on heritability and genetic advance in diallel analysis of okra.  International Journal of Agriculture 2(3): 105-111.
  8. Afuape, S.O.,Okocha, P.I. and Njoku, D.  (2011).  Multivariate assessment of the agromorphological variability and yield components among sweet potato (Ipomoea batatas(L.) Lam) landraces.  African Journal of Plant Science 5(2), 123-132.
  9. Bassey,E.E.,P.I.Okocha,M.J.Eka,C.I.Umechuruba and E.E.Ene-Obong (2012).Evaluation of Heterosis and variability indiallel crosses of Okra in South eastern Nigeria.Journal of Agriculture,Biotechnology and Ecology.5 (2), 20-29.
  10. Chinatu, L N., Okocha, P. I. and Eka, M. J. (2014). Evaluation of West African Okra (A. caillei) varieties for Agronomic Traits in Umudike in South-Eastern Nigeria. Int’l Journal of Agriculture and Rural Development. 17 (2), 1821 – 1827.
  11. Chinatu, L.N., Okocha, P. I. and Eka, M. J. (2014). Potentials for two crops of Okra (Abelmoschusesculentus) per annum in Umudike in South-Eastern Nigeria. Int’l Journal of Agriculture and Rural Development. 17 (2), 1883 – 1886.
  12. Chinatu, L. N. andOkocha P. I. (2014). Effects of sowing dates and genotypes of Vegetative, Reproductive traits and Fresh pod yield of West African Okra (Abelmoschuscaillei) in South-Eastern Nigeria. Journal of Biology, Agriculture and Healthcare, Vol. 4, No. 13, pp. 23 – 33.
  13. Chinatu, L. N.,Okocha, P. I. and Eka, M. J. (2014). Ontogenesis of West African Okra (Abelmoschuscaillei) and conventional okra (Abelmochusesculentus) varieties and its effects on Fresh pod yield in Umudike in South-Eastern Nigeria in 2009 – 2010 cropping seasons. Journal of Biology, Agriculture and Healthcare. Vol. 4, No.13, pp. 56 – 63.
  14. Chinatu, L. N.,Okocha, P. I., Harriman, J. C. and Okoronkwo, C. M. (2017). Intra and Inter-specific crosses in Abelmoschuscaillei and Abelmoschusesculentus and the implications on pod yield improvement. Nig. Journal of Agriculture, Food and Environment. 13 (1) 24 – 42.
  15. Chinatu, L. N., Okocha, P. I.,Okoronkwo, C. M. and Harriman, J. C. (2017). Variability, correlation and heritability studies in West African okra (Abelmoschuslaillei). Sky Journal of Agricultural Research. Vol. 6 (2) pp. 15 – 21.
  16. Ndukauba, J., G. E., Nwofia, P. I. Okochaand E. E. Ene-Obong (2015). Variability in Egusi-Melon genotypes (Citrulluslanatus (Thumb) Matsum and Nakai) in derived savannah Environment in South-Eastern Nigeria. International Journal of Plant Research. 5 (1), 19 – 26.
  17. Korieocha, J. N., Okocha, P. I.,Afuape, S. O. and Orunwense, K. O. (2015). Screening ten genotypes of natural rubber seedlings (Heveabrasiliensis (mull.) Arg.) for drought tolerance in Umudike, South Eastern, Nigeria. The Nigerian Agric. Journal, 46 (1 and 2), 9 – 16.
  18. Akpan, A. U. and Okocha, P. I. (2016). Influence of tapping mouth and variety on girth size and latex yield of improved rubber (Heveabrasiliensis, muell Argo) trees in Cross River State, Nigeria. Nigerian Journal of Agriculture, Food and Environment. 12 (4), 115 – 119.
  19. Nwankwo, I.I.M., Eka, M.J., Okocha, P.I. and Nwaigwe, G.O. (2012). Yield evaluation and morphological variability of Tubers of intra-specific hybrids of Discorearotundata .The  Nigerian Agricultural Journal. 43:137-149.
  20. Okocha, P. I., Orji, C. S., C. A. Amaefuna and Bassey, E. E. (2016). Determination of bulking rate of sweetpotato (Ipomoea batatas (L.) Lam.) genotypes in Umudike South-Eastern Nigeria. Nigerian Journal of Crop Science. 3 (1): 73 – 77.
  21. E. E. Bassey, P. I. Okocha, M. J. Eka, C. I., Umechuruba and E. E. Ene-Obong (2012). Evaluation of heterosis and variability in Diallel crosses of okra in South-Eastern Nigeria. Journal of Agriculture, Biotechnology and Ecology. 5 (2): 20 – 29.
  22. Nwankwo, I.I.M.,Eka, M.J., Okocha, P.I. and Chukwu, G.O. (2012). Estimation of quantitative heritable characters for selection of intra-specific hybrids of Discorearotundata.International Journal of Applied Research and Technology, 1(6): 152-159
  23. Afuape, S.O., Okocha, P. I. and Egesi, C.N.  (2011). Genetic Variability, Correlation and Path Coefficient Analysis in quantitative characters of Sweet Potato (Ipomoea batatas(L.) Lam).  Nigerian Agricultural. Journal, 42: 84-93.
  24. Bassey, E.E., P.I. Okocha, M. J. Eka, and C. I. Umechuruba(2010).  A Study on gene actions in diallel crosses of Okra (Abelmoschusesculentus(L.) Moench) for Development of improved varieties in humid environment of Southeastern Nigeria.  Nigerian Journal of Agriculture, Food and Environment. 6 (3 and 4):19-24.
  25. Bassey, E. E.,Okocha, P. I. and Eka, M. J. (2008). Studies of gene actions in 7 x 7 diaellel crosses of okra (Abelmoschusesculentus (L.) Moench) varieties for development of hybrid varieties in the high humid environment of Southeastern Nigeria. Journal of Scientific and Industrial Studies 8 (1): 43 – 48.



  1. Okocha, P.I. (1999).  Maize breeding and production in the acid and degraded soils of south eastern Nigeria.  In: Genetics and Food Security in Nigeria in the twenty-first century.  A 25-year commemorative publication of the Genetics Society of Nigeria (1974-1999), p. 44-47.
  2. Bassey, E.E. and Okocha, P.I.(2012). Evaluation and Utilization of crop germplasm in developing countries.  Chapter 8, pages 66 – 72. In: Etim, L. and Oribhabor, B. (Editors).  Current Issues in Sustainable Tropical Agriculture, Faculty of Agriculture, University of Uyo, Uyo, Nigeria. 175p.
  3. Asawalam, D. O., P. I. Okocha and P. E. Okorie (2010). Extension of improved Rice Production Technologies to Rural Farmers Nigeria. In: Sharing innovative experiences. Vol. 17: Experiences in Developing Capacity for Sustainable Development. TWAS—UNN/IAS-UNDP.



  1. Okocha, P.I. (1987).  The Effect of foreign cytoplasm on the fertility of wheat breeding lines.  In: Proc. of the NSBC, 6th -10th October 1996, pp. 91-93.
  2. Okocha, P.I. (1999).  Selection of drought tolerant rice breeding lines for the rainfed lowland ecology.  In: Proc. of the 32nd annual conference of Agric. Society of Nigeria.  Federal College of Agric. Ishiagu.  Pp. 143-148.
  3. Okocha, P.I. (2004).  Field screening of rice (Oryza sativa L.) varieties and breeding lines for allelopathic effects against common weeds of rice in south eastern Nigeria.  In Proc. of the 29th Annual Conference of the Genetics Society of Nigeria held at University of Agriculture, Abeokuta, October 11-14, 2004.  pp. 146-152.
  4. S.O. Afuape, P.I. Okocha, E.C. Nwauzor, Nwankwo, H.M. and D. N. Njoku (2006).  Evaluation of new sweet potato germplasm collections for yield and yield components.  In Proc. of the 40th Annual Conference of the Agricultural Society of Nigeria (ASN) held at National Root Crops Research Institute, Umudike. Oct. 16-20th.  Pp. 24-27.
  5. Korieocha, J. N.,Okocha, P. I.,Korieocha, D. S., Afuape, S. O. and Orunwense, K. O. (2014). Performances of Hevea genotypes under drought conditions in Umudike, South Eastern Nigeria. Proceedings of the 48th Annual Conference of the Agricultural Society of Nigeria (ASN) pp. 795 – 798.
  6. Korieocha, J. N., Okocha, P. I.,Korieocha, D. S., Orunwense, K. O. and Imoren, E. A. (2016). Effects of drought stress on agronomic traits of rubber (Heveabrasiliensis). Seedlings proceedings of the 50th Annual Conference of Agricultural Society of Nigeria (ASN) pp. 567 – 570.
  7. Nwankwo, I. I. M.,  Eka, M. J., Okocha, P. I. and Nwaigwe, G. O. (2012). Effect of tuber size on the floweing of intra-specific hybrids of white guinea yam (DioscorearotundataPoir). Proceedings of the 46th Annual Conference of the Agricultural Society of Nigeria (ASN) pp. 807 – 814.
  8. Nwankwo, I. I. M., Eka, M. J., Okocha, P. I., Nwaigwe, G. O. and Njoku, D. (2013). Character relationship and genetic correlation for selecting characters for tuber dry matter yield improvement in white yam (Dioscorearotundata). Proceedings of the 37th Annual Nigeria (ASN) pp. 467 – 475.
  9. Harriman, J. C., Okocha, P. I.,Nwofia, G. E. and Solomon, A. (2017). Comparative yield performance of 47 different orange fleshed sweet potato (OFSP) genotypes for root yield, dry matter and β-carotene. Proceedings of the 47th Annual Conference of the Genetics Society of Nigeria. pp  33 – 44.




  1. Okocha, P.I., Ukwungwu, M.N. and Joshi, R.C. (1991).  Field varietal screening against African Rice Gall Midge (IITA Research Guide No. 34), 15p.


Technical Reports

1.      Okocha, P. I. and Amaugo, G. O.  1999.  Rice production constraints of Iyi-Ocha-IyiUra-NgeleOkwo-Onuasu streamside Communities of Arochukwu with particular reference to Amoba Community.  Report of study commissioned by UNDP.

2.      Okorie, P. E., Okocha, P. I. and Asawalam, D. O. 2001.  Accelerated dissemination of improved Agricultural Technologies in Nigeria: Multiplication and Distribution of rice seed of recommended variety to Target areas.  Report of activity commissioned by USAID/IITA.

3.      Okocha, P. I. and Asawalam, D. O.  2005.  Continuing provision of inputs and extension support for rice farmers in Isuochi (Abia) and Afikpo (Ebonyi) States of Nigeria.  Sponsored by Department of Planning, Research and Statistics, Federal Ministry of Environment, Abuja.



i.                    Okocha, P.I. (1987).  The peculiarities of yield formation in varieties and allocytoplasmic hybrids of spring wheat.  Seminar on the “Problems of Intensification of Agricultural Production”.  People’s Friendship University, Moscow.  P5.

ii.                  Okocha, P.I. (1988).  The influence of cytoplasm on leaf surface area and grain yield in allocytoplasmic hybrids of spring wheat.  Seminar on “Ways of increasing the effectiveness of agricultural production”.  People’s Friendship University, Moscow.  P 34-35.

iii.                Okocha, P.I. and Semeonov, O.G. (1989).  The study of reciprocal hybrids from crosses between varieties of common wheat (Triticumaestivum) with allocytoplasmic hybrids of wheat, 2nd Conference of Scientific-Teachers Centre on physical and chemical methods of research work.  Moscow, 21-24 February 1989, p. 192.

iv.                Okocha, P.I., Leefenko, S.F. and Semeonov, O.G. (1989).  The reaction of allocytoplasmic forms of wheat to vernalization and photoperiodism.  Scientific and theoretical Conference on the “Problems of intensification of Agricultural production”.  Moscow.  P. 51-52.

v.                  Okocha, P.I., and Ukwungwu, M.N. (1992).  Rice production and breeding activities in Nigeria.  A country report.  Paper presented at IITA, Ibadan, 20-21 January.

vi.                Ukwungwu, M.N., Immolehin, E.D., Nwaokoma, C.C., and Okocha, P.I. (1991).  Rice production and Research in Nigeria.  Paper presented at the International Network for Genetic Evaluation of Rice (INGER-Africa) Workshop, WARDA, Bouake, Cote d’Ivoire, 2-4 October.

vii.              Okocha, P.I. (1992).  Performance of some rice varieties and elite lines under on-station and on-farm research conditions.  NCRI Seminar series, 15th October, 1992.

viii.            Okocha, P.I. (1995).  Segregation of some wheat crosses on the presence or absence of awns.  Paper presented at the 23rd Annual Conference of the Genetics Society of Nigeria, Uyo.  14th-18th May.

ix.                Okocha, P.I. (1996).  The effect of foreign cytoplasm on the fertility of wheat breeding lines.  Paper presented at the 6th Annual Conference of the Nigeria Society for Biological Conservation, MOUA, Umudike (6th-10th October 1996).

x.                  Okocha, P.I. (1996).  The role of cytoplasm on the reaction of wheat to vernalization and photoperiodism.  Paper presented at the sixth Annual Conference of the Nigeria Society for Biological Conservation, MOUA, Umudike (6th-10th October 1996).

xi.                Okocha, P.I. (1997).  The use of Gliadin Electrophoresis in wheat breeding programme.  Paper presented at the International workshop on Biotechnology: Towards sustainable Agricultural Development in Africa.  FUAU Umuahia, Nigeria.  10-15 August 1997.

xii.              Okocha, P.I. (1997).  Peculiarities of nucleo-cytoplasmic interactions in allocytoplasmic forms of wheat.  Paper presented at the FADIB International Conference on Biotechnology, Enugu.  Feb. 9-13.

xiii.            Okocha, P.I. (1998).  Selection of drought tolerant rice breeding lines for the rainfed lowland ecology.  Paper presented at the 32nd Annual Conference of the Agricultural Society of Nigeria, held at the Federal College of Agriculture, Ishiagu, Ebonyi State, 13th -16th September 1998.

xiv.            Okocha, P.I. and A.C. Nwosu (2001).  The possibility of breeding for low-input rice (Oryza sativa L.) varieties in south eastern Nigeria.  Paper presented at the 27th Annual Conference of the Genetics Society of Nigeria, held at the National Institute for Freshwater Fisheries Research, New Bussa, Niger State, 3rd – 7th September 2001.

xv.              Okocha, P.I. (2004).  Field screening of rice (Oryza sativa [L]) varieties and breeding lines for allelopathic effects against common weeds of rice in south eastern Nigeria.  Paper presented at the 29th Annual Conference of the Genetics Society of Nigeria, held at the University of Agriculture, Abeokuta.  October 11-14th.



a)                External Examiner

Served as an External Examiner to the Postgraduate School of the University of Nigeria, Nsukka for the M. Sc. students of the Department of Crop Science fromthe 1999 – 2000Academic Sessions to date.

b) Sub-Editorship of Reputable Journals

Global Journal of Pure and Applied Sciences – from January 2000 to December 2003.

c)  Professional Reviews of Papers for Reputable Journals

  1. “Influence of root perimeter on the growth and yield characteristics of cowpea (Virgnaunguiculata(L) WALP)”.  Global Journal of Pure and Applied Sciences – June 1998.
  2. “The application of bulking rate in selecting early maturing cassava”.  Journal of Sustainable Agriculture and the Environment – September 1998.
  3.  “Land preparation techniques towards maize production”.  Journal of Sustainable Agriculture and the Environment – September 1998.
  4. “Screening Bambara groundnut lines for resistance to brown bloth disease induced by Colletotrichumcapsici(Syd.).  Butler and Bisby in Northern Nigeria”. Journal of Sustainable Agriculture and the Environment – November 1998.
  5. “The influence of sodium chloride (NaCI) salinity on some rice genotypes adapted to the Calabar humid environment”.  Global Journal of Pure and Applied Sciences – June 2000.
  6. “Influence of Genotype and environment interaction on the productivity and stability of improved cassava genotypes in the humid ecozones of Nigeria”.  The Nigeria Agric. Journal, June 2000.
  7. “Evaluation of nine cassava varieties in the Jos Plateau area of Nigeria”.  The Nigerian Agric. Journal, June 2000.
  8. “Genotype response to moisture stress in Groundnut (Arachishypogae(L.) in the green house”.  Journal of Sustainable Agriculture and the Environment, March 2000.
  9. “The use of goat house manure as alternative to conventional fertilizers in upland rice”.  Journal of Sustainable Agriculture and the Environment, May 2000.
  10. “Effect of herbicide treatment on weed and growth of upland rice (Oryza sativa (L.) varieties”.  Journal of Sustainable Agriculture and the Environment, June 2000.

And manyothers too numerous to list here.


d)                 Supervision of Post Graduate Students

Project/Candidates Supervised                    Date                Degree Awarded

1.  Mr. N.P.Eleweanya                                    2000                M.Sc (Major Sup.)

2.  Mr. J.C. Njoku                                           2001                M.Sc (Co-Sup.)

3.   Mr. L.I. Chukwu                                       2002                M.Sc (Co-Sup.)

4.   Dr. G.O. Amaugo                                     2003                Ph.D (Co-Sup.)

5.   Mr. L.N. Chinatu                                      2004                M.Sc (Major Sup.)

6.   Mr. N.C. Onwubiko                                  2004                M.Sc (Co-Sup.)

7.   Dr. A.O.A. Meregini                                 2004                Ph.D (Co-Sup.)

8.   Dr. G.E. Nwofia                                       2004                Ph.D (Co-Sup.)

9.   Miss K.U. Agwatu                                    2005                M.Sc (Co-Sup.)

10. Mr. S.C. Okere                                          2005                M.Sc (Co-Sup.)

11. Dr. C.O. Amadi                                        2005                Ph.D (Co-Sup.)

12. Mr. C.D. Iroakazi                                      2005                M.Sc (Major Sup.)

13. Mr. S.O. Afuape                                       2007                M.Sc (Major Sup.)

14. Dr. J.C. Njoku                                           2008                Ph.D (Co-Sup.)

15. Dr. E.E. Bassey                                         2008                Ph.D (Major Sup.)

16. Dr. A.U. Akpan                                        2010                Ph. D (Co-Sup.)

17. Dr. E.S. Willie                                           2010                Ph. D (Co-Sup.)

18. Dr. I. I. M. Nwankwo                               2014                Ph.D (Co-Sup)

19. Dr. L. N. Chinatu                                      2014                Ph.D (Major)

20. Dr. Joseph Ndukauba                               2013                Ph.D (Co-sup)

21. Mrs. Josephine Korieocha                         2014                M.Sc

22. Mrs. Jane ChizozirimEnyinnaya               2014                M.Sc

23. Keke, CallistusIfeanyi                              2014                M.Sc

24. Obi-Joachim Perpetua                               2014                M.Sc

25. Ekaette, Eunice Etim                                2014                M. Sc

26. Ezenwaka, Lydia Chidinma                     2014                M.Sc

27. Simon Peter Abah                                     2017                M.Sc

28. Stephen AhamefulaNwaogu                     2017                M.Sc




Singing, Listening to good music, and reading.



1.         PROF. E.E. ENE-OBONG (FAS)

            Department of Crop Science

            Faculty of Science,

            University of Calabar,



2.         PROF. M. I. UGURU

            Department of Crop Science

            Faculty of Agriculture, University of Nigeria Nsukka, UNN

            Enugu State


3.         PROF. C.O. MUONEKE

            Department of Agronomy,

            College of Crop and Soil Sciences,

            Michael Okpara University of Agric.,


Prof. P. I. Okocha

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