OKPARA, DOMINIC AJA

A. PERSONAL DATA

Name:

OKPARA, DOMINIC AJA

Marital status:

Married

Number of children:     

Four

CONTACT ADDRESS:                             

Department of Agronomy

College of Crop and Soil Sciences

Michael Okpara University of Agriculture,

Abia State.

Department/Unit:

Agronomy

Area of specialization:

Crop Production/Agronomy

 

1.      Former Posts Held

1.      Deputy Vice Chancellor, Michael Okpara University of Agriculture, Umudike: March 2012 – April 2016.

2.      As Deputy Vice Chancellor of Michael Okpara University of Agriculture, I assisted the Vice Chancellor in the performance of his functions and acted in the place of the Vice Chancellor when he was absent or away from the University. I also performed other functions which the Vice Chancellor or the Governing Council assigned to me at various times (e.g.) Chairman, Convocation Ceremonials Committee etc

3.      Ag. Dean, College of Crop and Soil Sciences, Michael Okpara University of Agriculture, Umudike: 2007 – 2008.

4.      Deputy Dean, College of Crop and Soil Sciences, Michael Okpara University of Agriculture, Umudike: 2007

5.      Head, Department of Agronomy, Michael Okpara University of Agriculture, Umudike: 2003-2005, 2008 – 2010.

6.      Head, Department of Agriculture, Kogi State College of Education: 1995-1997

 

2.      Present Status

Professor of Agronomy, Michael Okpara University of Agriculture, Umudike: 2008 to date (9 Years).

 

 

B.

EDUCATIONAL BACKGROUND

 

 

1.

Educational institutions attended (with dates): 

a)

Izzi High School, P.M.B 16, Abakaliki, Ebonyi State.

1973 – 1977

b)

University of Port Harcourt            , Port Harcourt

1978 – 1982

c)

University of Nigeria, Nsukka

1983-1985, 1988-1994

 

 

 

2.

Academic Qualifications

 

 

a)

WASC Division one

1977

 

b)

B Sc. (Hons) Second Class upper Division

1982

 

c)

M Sc. (Crop science)

1985

 

d)

Ph. D (Crop science)

1994

 

3.

Certificate Courses/Summit Attended

 

 

a)

Nigerian Economic Summit

2014

 

b)

Senior Executive Certificate Programme on Good Governance and Anti-Corruption Management Information System

2015

 

C.

Work Experience

 

 

1.

Previous Work Experience outside MOUAU

 

 

a)

Tutor, Ogugu Community Secondary School, Olamaboro L.G.A., Kogi State

(1985-1990)

 

b)

Ag. Principal  Ogugu Community Secondary School,

 Olamaboro L.G.A., Kogi State.

(1988- 1989)

 

c)

Principal Lecturer, Department of Agriculture, Kogi State College of Education, Ankpa

(1990 – 1997)

 

d)

Head, Department of Agriculture, Kogi State College of Education Ankpa

(1995 -1997)

 

e)

Adjunct Lecturer, Cross River, University of Technology, Obubra Campus

2005-2007

 

f)

Visiting Lecturer, University of Calabar, Calabar

2005-2006

 

g)

Visiting Professor, University of Port Harcourt

2011-2012,

2016 to date

 

 

2.

Work Experience in MOUAU

 

 

a)

Deputy Vice-Chancellor

2012 –  March 2016

 

b)

Ag. Dean, College of Crop and Soil Sciences

2007 – 2008

 

c)

Deputy Dean, College of Crop & Soil Sciences        

2006

 

d)

Ag. Head, Department of Agronomy

2003-2005, 2008 – 2010

 

e)

Lecturer, Department of Agronomy

1997 – Date

 

f)

Exam Officer, College of Crop and Soil Sciences

1999-2000

 

D.

Membership of Committees/Bodies

 

 

a)

Member, Governing Council (MOUAU)

 

 

b)

Member, University Senate

2003-2005, 2007 – date

 

c)

Member, Senate Exam Malpractice Committee

2004-2005

 

d)

Member, Senate Committee on Nkulo’s Result

2004-2005

 

e)

Member, NURSEDEF Committee 

2004

 

f)

Member, Departmental and College Post-Graduate Committee

1999-date

 

g)

Member, University Staff School Management Board

2001-2008

 

h)

Member, Students Disciplinary Committee

2007-date

 

i)

Member, MOUAU Response to Global Food Crisis Committee

2008

 

j)

Member, University Farm Committee

2007

 

k)

Member, University Committee for Reward of Excellence

2008 – 2010

 

l)

Member, Committee for Review of Conditions of Service

2010 – 2011

 

m.

Chairman, Post UME Screening Committee

2011 – date

 

n.

Chairman, Committee on Establishment Profile

2012

 

o.

Chairman, Committee on Strategic Planning

2012

 

p.

Chairman, Convocation Ceremonials Committee

2012

 

q.

Chairman, MOUAU Committee on ICT

2012

 

r.

Chairman, Senate Special Committee on Results

 

 

 

2012

 

E.

MEMBERSHIP OF PROFESSIONAL BODIES:

 

 

 

Agricultural Society of Nigeria

 

 

 

Nigerian Soybean Association

 

 

 

Organic Agric. Project in Tertiary Institutions in Nigeria (OAPTIN)

 

 

Crop Science Society of Nigeria

 

 

American Society of Agronomy

 

 

International Society of Organic Agriculture Research

 

F.

HIGHER DEGREE SUPERVISION

 

 

1.       

Ebeniro, Christiana N. (M.Sc.)  

2002

 

2.       

Ihediwa, N. (M.Sc.)  

2005

 

3.       

Mbah, E.U. (Ph.D)  

2005

 

4.       

Chukwu, E.I. (PGD)

2007

 

5.       

Ojikpong, T.O. (Ph.D)  

2007

 

6.       

Umana, B.D.  (M.Sc.)  

2008

 

7.       

Okon, O.E. (M.Sc.)  

2008

 

8.       

Umana, P.E. (Ph.D)  

2008

 

9.       

Oshilim, A.F. (M.Sc.)  

2008

 

10.  

Udo, A.A. (M.Sc.)  

2008

 

11.  

Binang, W.B (Ph.D)  

2008

 

12.

Udoh, A(Ph.D)  

2008

 

13.

Chukwuekezie, G.C.  (M.Sc.)  

2009

 

14.

Agoha, U. (M.Sc.)  

2010

 

15.

Umeh, I.K. (M.Sc.)

2011

 

16.

Akpan Idaresit (Ph.D)

2012

 

17.

Ikoro A. Ikoro (M.Sc.)

2014

 

18

Akpaninyang, F. (M.Sc.)

2015

 

19.

Ogbologwung, L.P. (M.Sc.)

2015

 

20.

Mary Iroegbu (Ph.D)

2015

 

21.

Inyang, Paul (M.Sc.)

2016

 

 

 

 

 

G.

External Assessments for Professorial Appointments

 

S/No

Institution

Date/Year

 

1.      

Ahmadu Bello University

2012

 

2.      

Ahmadu Bello University

2012

 

3.      

University of Calabar

2013

 

4.      

University of Abuja

2015

 

5.      

FUTO

2015

 

6.      

University of Calabar

2015

 

7.      

University of Calabar

2016

 

8.      

FUTO

2017

 

 

 

H.

EXTERNAL EXAMINATIONS

 

1.      

2004, 2010-2013.  Appointed external examiner, Department of Crop Science, University of Calabar, to conduct M.Sc./Ph.D Theses Examination.

2.      

2005.  Appointed external examiner, Department of Crop Science, University of Nigeria, Nsukka to conduct M.Sc, Thesis Examination.

3.      

2006, 2010.    Appointed external examiner, Department of Crop Science, University of Nigeria, Nsukka to conduct M.Sc, Thesis Examination

4.      

2009-2012. Appointment external examiner, Department of Crop Science, University of Abuja

5.      

2014-2015 Appointed external examiner, Department of Crop Science and Technology, Federal University of Technology, Owerri.

6.      

2016 Appointed external examiner, Department of Crop Science, University of Nigeria, Nsukka to conduct PhD thesis examination.

7.      

2017 Appointed external examiner, Department of Crop Science, University of Calabar to conduct MSc theses examination

8.      

2017 Appointed external, Department of Crop Production, Abia State University to conduct PhD thesis examination.

I.

CONFERENCES/WORKSHOPS ATTENDED

 

1.      

Agricultural Society of Nigeria (ASN) Conferences.

 

2.      

Nigerian Soybean Association (NSA) Conferences.

 

3.      

Organic Agriculture Project in Tertiary Institution in Nigeria Conferences

4.      

National Biotechnology Development Agency round table/Worskshop

5.      

IFAD/WECARD/IITA yam Technical workshop, Accra, Ghana 11-13 September,  2007.

6.      

E-Consultation on agricultural research programming. Workshop organized by European Commission with CTA April 14-16. 2008, Brussels,

7.      

African Crop Science Society Conference, Nairobi, Kenya

8.      

Agro forestry World Congress, Florida, USA

9.      

NARO, Conference, Kampala, Uganda

10.  

Crop Science Society of Nigeria Conference

11.  

ISOFAR, Organic world congress, Istanbul, Turkey

 

J.

Service to the Church

 

 

1.     Chairman, Board of Governors of Good Shepherd Schools, Umueze, Umuahia (formerly under Umuahia Jerusalem District but now under Umuahia Central District, AGN): 2010 to date .

2.     Member, Governing Council, Evangel High School, Umuahia: 2011 – 2012.

3.     Member, Media Committee, 22/25 Nkporo Lane, AGC, Umuahia.

4.     Member, Men’s Ministry, 22/25 Nkporo Lane, AGC, Umuahia.

 

 

K

Church Awards

 

1.     Father of Peace Award of Honour by Men’s Ministries, 22/25 Nkporo lane, AGC, Umuahia (2010).

2.     Distinguished Kingdom Builder Award by Women’s Ministries, AGN, Umuahia Jerusalem District: (2013).

3.     Destiny Helper Honourable Award by Rev/Rev Mrs. James C. Ndukwe, District Superintendent, Umuahia North, AGN (2015).

4.     Worthy Ambassador Award by Youth Ministries, Umuahia North (Jerusalem) District, AGN (2016).

5.     Kingdom Builder Award by St. Peter’s Presbyterian Church, Amasiri Junction Parish, (2016).

                       

L.

Community Awards

 

1.     Community Service Award by Amasiri Clan 2012.

2.     Human development/empowerment Award by Amasiri Town Union, 2016.

 

M.

Service to Corporate Bodies

 

Consultant, NAOC Green River Project: Providing expert advice on agricultural best practices for the Green River Project in soil in management and crop production.

N.  PUBLICATIONS

 

JOURNAL PUBLICATIONS OF D. A. OKPARA

A.        Major Publications

1.      Okpara, D.A. and Omaliko, C.P.E (1995). Effects of staking, nitrogen and phosphorus fertilizer rates on yield and yield components of African yambean. Ghana Journal of Agricultural Science 28-29: 23-28. (Ghana)

 

2.   Okpara, D.A. and Omaliko, C.P.E. (1995).  Forage millet response to irrigation and nitrogen fertilization in the derived savanna zone of Nigeria. Ghana Journal of Agricultural Science 28-29: 37-43. (Ghana)

3.  Okpara, D.A., Omaliko, C.P.E. and Ugbaja, R.A.E. (1995). Evaluation of the productivity of African yambean/yam intercrops under different African yambean plant densities. Journal of Science, Engineering and Technology 2: 9- 15. (Nigeria)

4.      Ugbaja, R.A.E. and Okpara, D.A. (1996).  Effects of removal of lateral buds flowers or pods on tuberization of African yambean. Tropical Root and tuber crops Bulletin 9: 10-11. (IITA)

5.      Okpara, D.A. and Omaliko, C.P.E (1998).  Influence of plant density and nitrogen fertilization on late season forage maize. Journal of Applied Chemistry and Agricultural Research 5: 54-61. (Nigeria)

 6.     Okpara, D.A. and Omaliko, C.P.E.(2006).Performance of cassava/yam yam intercrops under different yambean densities and time of introduction. East African Agricultural and Forestry Journal. Vol. 68 (3 and 4). (Kenya)

7.      Okpara, D.A.  and Omaliko, C.P.E (1997).  Response of African yambean  Sphenostylis stenocarpa  to sowing date and plant density.  Indian Journal of Agricultural Science.  67: 220 -1 (India)

8.      Okpara, D.A (1999).  Effect of irrigation and nitrogen fertilization on forage maize in a derived savanna environment. Nigerian Journal of   Agricultural Technology 8: 60-67. (Nigeria)

9.      Okpara, D.A. and Ibiam, B. (2000).  Evaluation of soybean varieties for adaptability to a humid tropical environment in Southeastern Nigeria. Journal of  Sustainable Agriculture and Environment 2: 26-31.  (Nigeria)

10.    Okpara, D.A. (2000). Growth and yield of maize and vegetable cowpea as influenced by intercropping and nitrogen fertilizer in the lowland humid tropics. Journal of Sustainable Agriculture and Environment  2: 188-194. (Nigeria)

11.    Okpara, D.A. (2000).  Effect of the time of introduction of component crops and of fertilizer nitrogen application on maize and vegetable cowpea grown in mixtures under the humid tropical conditions. Journal of Tropical Agriculture, Food, Environment and Extension 2: 65-73. (Nigeria)

12.    Njoku, J.C., Okpara, D.A. and Asiegbu, J.E. (2001).  Growth and yield responses of sweet potato to inorganic nitrogen and potassium in a tropical isol. Ultisol.  Nigerian Agricultural Journal 32.30-41. (Nigeria)

13.    Okpara, D. A. and Oshilim, A.F. (2001). Response of vegetable cowpea to planting date and fertilizer nitrogen in the humid tropics. Journal of Applied  Chemistry and Agricultural Research 7: 95-103 (Nigeria)

14.    Okpara, D.A 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 (Agro Science) 2: 15-18.  (Nigeria)

15.    Okpara, D.A., Nwajiugo, U. C. and Ibiam, B. (2002). The response of soybean to nitrogen and Potassium fertilization in the forest belt of Southeastern Nigeria. Tropical Oil seeds Journal 7: 53-61. (Nigeria)

16.    Okpara, D.A. and Njoku, J. C. (2000). Growth and yield responses of maize to duration of mucuna fallow in a tropical ultisol. Biological Agriculture and Horticulture 20.1-9. (UK)

17     Mbah, E.U., Muoneke, C.O., Okpara, D.A. and Uguru, M. I.  (2003). Evaluation of the productivity of soybean/cassava intercropping system as influenced by soybean planting density.  Journal of Sustainable Tropical Agricultural Research 7: 46-5. (Nigeria)

18.   Mbah, E.U., Muoneke, C.O. and Okpara, D.A. (2003). Evaluation of cassava/soybean intercropping system as influenced by cassava genotypes.  Nigerian Agricultural Journal 34: 11-18. (Nigeria)

19.   Njoku, J.C., Okpara, D.A. and Ikeorgu, J.E.G.  (2003). Response of sweet potato to duration of mucuna fallow.  Tropical Science 43. 44-47. (UK)

20.   Okpara, D.A., Njoku, J.C. and Ikeorgu, J.E.G.  (2003).  Maize response to green manure under the humid tropical conditions of South eastern Nigeria.  Tropical Agriculture   (Trinidad) 80: 1-5. (West Indies)

21.    Edeoga, H. O., Okpara, D. A. and Omusun, G. O. (2004).  Agronomic and yield characteristics  of eleven surgarcane cultivars at different sampling dates in southeastern Nigeria. Advances in Agricultural Sciences. 9:103 – 108 (Poland)

22.   Njoku, J.C., Okpara, D.A. and Okocha, P.I. (2004). Effects of nitrogen and Potassium fertilizer on dry matter accumulation in sweet potato in a humid tropical environment.  Journal of Sustainable Tropical Agricultural Research  10: 106-111. (Nigeria)

23.   Okpara, D.A.,  Njoku, J.C. and Asiegbu, J.E. (2004). Response of two sweet potato varieties to four green manure sources and inorganic fertilizer in a humid tropical ultisol. Biological Agriculture and Horticulture 22: 81-90. (UK)

24. Okpara, D. A., Awurum A. N. and Okeke, A. I. (2004). Effect of planting schedule and density on cowpea/maize intercropping in southeastern Nigeria.  Journal of Sustainable Tropical Agricultural Research. 11:59-67 (Nigeria)

25.   Okpara, D.A.; Ikeorgu, J. E. G, and Njoku, J. C. (2005). Potentials of cover crops for  sustainable short fallow replacement in low input systems of maize production in the humid tropics. Tropical and Sub-tropical Agro-ecosystem 5:109-116. (Mexico)

26.   Ofor, C. O. and Okpara, D. A.  (2005). Biomass and seed production of twelve varieties of soybean in fish pond in southeastern Nigeria.  Nigerian Agric Journal. 36: 97 – 107. (Nigeria)

27.   Okpara, D. A., Ojikpong T. and Udo A. (2005).  The Effects of planting dates on seven varieties of soybean in Umudike agroecosystem of southeastern Nigeria.  Nigerian Agricultural Journal 36: 124 – 133.

                        (Nigeria)

28.      Ikeorgu, J.G.,  Okpara, D.A.,  Oshilim, F.A  and  Njoku,  J.C. (2006).  Contribution of   leguminous cover crops in yam production in systems in South eastern Nigeria. Biomass production and weed suppression Cameroon Journal of Agricultural Science.2:16-21 (Cameroon)

29.       Ikeorgu, J.G., Okpara, D.A. and Njoku, J.C. (2006).  Contributions of       Leguminous covercrops in yam production systems in southeastern    Nigeria: 11. Soil organic matter, N,P,K and yam yields.  Cameroon             Journal of Agricultural Science 2:21-25. (Cameroon)

30.     Mbah, E.U, Muoneke, C.O and Okpara, D.A. (2007).Effect of Compound Fertilizer on the yield and productivity of soybean and maize in soybean/maize intercrop in South-Eastern Nigeria. Tropical and Subtropical Agroecosystems 7:87-95 (Mexico)

31. Okpara, D. A., Muoneke C. O. and Ihediwa, N. (2007). Influence of liming on high yielding soybean varieties in Southeastern Nigeria. Journal of Agriculture, Food, Environment and Extension 6:16-24 (Nigeria)

32. Okpara, D. A. and Baiyeri, S. O. (2006). Effect of Growth Media on the Propagation of four cassava varieties.   Global Journal of Agricultural Science 5 (2):131 – 134 (Nigeria)

33.   Njoku, S.C., Muoneke, C.O., Okpara, D.A. and Agbo, F. Mo. (2007)  Effect            of intercropping varieties of sweet potato and Okra in an ultisol of  south Eastern Nigeria.  African Journal of Biotechnology 8:1650-1654. (Kenya)

34. Ojikpong, T. O., Okpara, D. A., Muoneke, C.O., and Kekong, M.A. (2007)  Influence of four varieties of sesame on maize/sesame intercropping in south eastern Nigeria. Global Journal of Pure and Applied Sciences.  14. 169-174 (Nigeria)

35  Okpara, D.A., Muoneke, C.O and Ojikpong, T. O (2007).  Effects of nitrogen and phosporus fertilizer rates on the growth and yield of sesame in the South eastern ainforest belt of Nigeria.  Nigerian Agricultural Journal 38:1 – 11.  (Nigeria)

36  Ojikpong, T. O.,  Okpara, D. A.  and  Muoneke, C.O. (2007).  Effect of plant spacing and sowing date on sesame production in south eastern Nigeria.  Nigerian  Agricultural Journal 38: 12 – 23. (Nigeria)

37  Ojikpong, T.O., Okpara, D.A. and Muoneke, C.O. (2008).  Effect of nitrogen and   potassium fertilizers on the growth and yield of sesame in the rainforest belt of south eastern Nigeria.  Journal of Sustainable Agriculture and Environment 10: 60-68 (Nigeria).

38   Okpara, D.A., Umanah, B.D. and Ojikpong, T.O. (2008).  Effect of number of nodes per stake on the field performance of cassava.  Journal of Agriculture, Biotechnology and Ecology 1: 33-43 (China).

39.     Mbah, E. U, Muoneke, C. O, and Okpara, D. A. (2008). The effect  of cassava planting methods and soybean sowing dates on the yield performance of  the components species in cassava/soybean  intercrop under the humid tropical lowlands of southeast Nigeria.  African Journal of Biotechnology 8:42-47 (Kenya)

40.   Okpara, D. A., Nwofia, G. E., Chukwuekezie, G. C. and Ojikpong, T. (2009).   Productivity of Cocoyam/Cowpea intercrop as influenced by Cowpea growth habits. Nigerian Agricultural Journal 40: 73-81 (Nigeria)

 

41. Okpara, D.A,   Okon, O. E. and Ekeleme, F. (2009).  Optimizing Nitrogen                          fertilization for production of white and orange-fleshed sweet potato in South eastern Nigeria.  Journal of Plant Nutrition. 32: 878 – 891 (USA)

42. Okpara, D. A., Ikeorgu, J. E. G., Njoku, J. C. and Tarawali, G. (2009).  Effect of three-year fallow with herbaceous cover legumes on soil fertility and sweet potato production in southeastern Nigeria.  African Journal of Root and Tuber Crops. 7:47-54  (ISTRC)

43. Ojikpong, T.O., Okpara, D. A and  Muoneke, C.O. (2009).  Effect of time of introducing sesame and NPK (15:15:15) fertilizer on sesame/            soyabean Intercropping in South eastern forest belt of Nigeria.  Journal of Plant Nutrition – 32:367-381 (USA)

44. Ukom, A.N., Ojimelukwe, P.C., and Okpara D.A. (2009). Nutrient composition of Selected Sweet Potato varieties as influenced by        different Levels of nitrogen fertilizer application. Pakistan Journal of Nutrition 8: 1791 – 1795 (Pakistan)

45.  Okpara D.A., Agoha, U.S. and Iroegbu, M. (2010): Response of Cassava variety TMS/98/0505 to potassium fertilization and time of harvest in south eastern Nigeria. Nigerian Agricultural Journal 41: 85-92

46. Ebeniro, C.N., Okpara, D.A., Ano, A.O. and Njoku, S.C. (2010) Responses of soybean to lime and potassium on a haplic acrisol in Umudike. Nigerian Agricultural Journal 41: 108-114 (Nigeria)

47. Binang, W.B., Okpara, D.A., Shiyam, J.O. and Ntia, J.D. (2010). Evaluation of cultivar inter planting ratio on the productivity of rice/rice system. Research Journal of Agriculture and Biological Sciences. 6: 1055-1059

48. Binang, W.B., Okpara, D.A., Ntia, J.D and Shiyam, J.O. (2010). Spatial and temporal deployment of cultivar effects on rice cultivar mixtures. Research Journal of Agriculture and Biological Sciences 6 (6): 1099-1102

49.Okpara, D.A., Udo, A.A., Iroegbu, M. and Ikeogu, J.G. (2011). Effect of fallow species and fallow duration on soil fertility, Biomass and white yam production. Biological Agriculture and Horticulture 27 165-178 (UK)

50. Okpara, D.A., Umeh, K.I. and Ekeleme, F (2011). Influence of cowdung and inorganic potassium on weed biomass and sweet potato production. Nigerian Journal of Weed Science 24: 42-51 (Nigeria)

51. Mbah, E.U., Muoneke, C.O. and Okpara, D.A. (2011). Productivity of cassava genotypes and soybean row planting pattern in cassava/soybean intercropping. International Journal of Agriculture and Rural Development 14:457-466 (Nigeria)

 

52. Uwah, D.F.; A.U. Udoh, D.A. Okpara, Eka, M. J. and Asawalam, D.O. (2011): Growth and yield of cocoyam following soil amendment with poultry manure and rice husk. Journal of Agriculture, Biotechnology and Ecology 4:1-10 (China)

53. Binang, W.B. and Okpara, D.A. (2011). Responsiveness of rice (Oryza sativa L.) to different sources and rates of N in the mangrove swamp soils of Cross River estuary. Journal of Agric. Res. and policies 6(1), 92-96

54. Okpara, D.A., Chukwuekezie, G. and Iroegbu, M. (2012). Productivity of Cocoyam/Cowpea intercrop as influenced by cowpea growth habit and spatial arrangement. Nigerian Agricultural Journal 43:1-12 (Nigeria)

55. Akpan, I.I.; C.O. Muoneke and Okpara, D.A. (2012). Effect of egusi planting density on productivity of egusi/turmeric intercrops in southeastern Nigeria. Asian Journal of Crop Science 5:41-47 (Asia)

56. Muoneke, C.O.; Ndukwe, O.O., Umana, P.E.; Okpara, D.A. and Asawalam, D.O. (2012): Productivity of vegetable cowpea and maize intercropping system as influenced by component density in a humid tropical zone of southeastern Nigeria. International Journal of Agriculture and Rural Development 15: 835-847

57. Muoneke, C.O., Ndukwe, O.O., Umana, P.E., Okpara, D.A. and Asawalam, D.O. (2012). Effect of relative sowing time on growth and yield of vegetable cowpea and maize in vegetable cowpea/maize intercropping system. Journal of Agricultural Science and Environment 12:1-14

58. Simonyan, K.J., Ehiem, J.C., Eke, A.B., Adama, J.C. and Okpara, D.A. (2013). Some physical properties of ginger varieties. Journal of Applied Agricultural Research 5: 73 – 79.

59. Binang, W.B., Ojikpong, T.O., Garjila, Y.A., Esang, D.M. and Okpara, D.A. (2013). Evaluation of liming materials and Bradyrhizobuim inoculation on the productivity of soybean in the humid tropical ultisols of southeastern Nigeria. Journal of Agriculture and Sustainability. 4: 141-153.

60. Okpara, D.A., Ikoro, A.I. and Ojikpong, T.O. (2013). Water yam microsett responses to plant density and mulching in south eastern Nigeria. Africa Journal of Root and Tuber Crops 10:55-60.

61. Akpan, I.I., Muoneke, C.O. and Okpara, D.A. (2013). Effects of Relative Sowing Time on the Productivity of Egusi/Turmeric Intercrop in South-eastern Nigeri. International Journal of Applied Research and Technology Vol. 2 No. 9: 49-55

62. Okpara, D.A., Mbah, E.U. and Chukwu, E.I. (2014). Assessment of growth and yield of some high and low-cyanide cassava genotypes in acid ultisols of south eastern Nigeria. African Journal of Biotechnology 13:651-656

63. Okpara, D.A., Mbah, E.U. and Ojikpong, T.O. (2014). Association and path coefficients Analysis of fresh root yield of high and low cyanide cassava genotypes in the humid tropics. Journal of Crop Science and Biotechnology. 17:1-7 (Korean Society of Crop Science).

 

64. Okpara, D.A., Ikoro, A.I., Mbah, E.U. and Akpaninyang, F. (2014). Growth and yield of white yam microsett in response to plant population and NPK fertilizer, Nigerian Journal of Crop Science 2:72-75

65. Simonyan, K.J., Eke, A.B., Adama, J.C., Ehiem, J.C., Onwuka, U.N., Okafor-Yadi, O.C., Iheke, A.R., Nwankwojike, B. N. and Okpara, D.A. (2014). Design and development of a motorized ginger rhizomes splitting machine. Journal of Applied Agricultural Research 6:121-130

66. Simonyan, K.J., Ehiem, J.C., Okafor-Yadi, O.C., Akani, A.O., Okpara, D.A., Simonyan, J.B., Akachukwu, C.O., and Onumadu, F. (2014). Some mechanical properties of Irvingia wombolu nuts under compression loading, relevant for developing a cracking machine. Journal of Applied Agricultural Research 6:131-141

67. Simonyan, K.J., Eke, A.B., Adama, J.C., Ehiem, J.C. and Okpara, D.A. (2014). Performance evaluation of motorized ginger rhizomes splitting machine. Agricultural Mechanization in Asia, Africa and Latin America 45:22-27

68. Ikoro, A. I., Okpara, D.A. and J. Ikeorgu (2014), Effects of nodes per vine and planting density on the leaves and yield of water yam in south eastern Nigeria. Journal of Applied Agricultural Research 6: 219-226

69. Ikoro, A.I., Okpara, D.A., Mbah, E.U. and Binang, W (2014). Evaluation of slips of white yam genotypes for minituber production in the humid tropics. Nigerian Agricultural Journal 45:53-61

70. Akpaninyang, F., Okpara, D.A. and Njoku, J.C. (2013). Integrated nutrient management for orange-fleshed sweet potato in south eastern Nigeria. Uganda Journal of Agricultural Sciences. 14:117-123. (Uganda)

71. Akpaninyang. F., Okpara, D.A., Njoku, J.C., Ogbologwung, P., Okpara, B., Akpan, A.E. and Jan, L. (2015). Combinations of organic and inorganic fertilizers for vine, carotene and root yields in orange-fleshed sweet potato in a humid tropical location. Nigerian Agricultural Journal 46: 117-126. (Nigeria)

72. Binang, W.B., Shiyam, J.O., Uko, A.E., Ntia, J.D., Okpara, D.A., Ojikpong, T.O., Ntun, O.E. and Ekeleme, F. (2016). Influence of gender and spacing on weed smothering potentials of fluted pumpkin (Telfairia occidentalis) in south eastern Nigeria. Journal of Applied Life Sciences International 8:1-10.

73. Binang, W.B., Ntia, J.D., Attoe, E.E., Okpara, D.A., Essang, M.D., Garjila, A.Y. and Bassey, E.S. (2016). Sowing depth and seed weight effects on seedling emergence, vigour and fresh shoot yield of Telfairia occidentalis under different soil types in Cross River State, Nigeria. Nigerian Agricultural Journal 47:85-93.

74. Iwuagwu, M.O., Okpara, D.A., Muoneke, C.O. and Ukaoma, A.A. (2016). Organic and mineral fertilizer effects on growth and yield of cocoyam in a tropical ultisol in south eastern Nigeria. Journal of Plant Breeding and Crop Science 8: 175-181

75.  Ogbologwung, L.P., Okpara, D.A. and Njoku, J.C. (2016). Effect of plant spacing and variety on weed and performance of orange-fleshed sweet potato I humid agro-ecological zone of Nigeria. Uganda Journal of Agricultural Sciences 17: 13-22.

76. Nwofia, G., Jivuba, F., Okpara, D.A. and Mba, E. (2017). Yield and productivity of eggplant genotypes intercropped with vegetable cowpea in the humid tropics. International Journal of Vegetable Science. DOI:10.1080/19315260.2017.1310779.

B.        CONFERENCE PROCEEDINGS

77.    Asiegbu, J. E. and Okpara, D.A. (2002).  Soybean production in marginal soils of Southeastern Nigeria. Proceedings of 36th Annual Conference of Agricultural Society of Nigeria, Federal University of Technology, Owerri,  October, 20-24, 2002.

78. Okpara, D.A and Oshilim, F. (2003). Effect of intra-row spacing and planting dates on growth and yield of Mucuna pruriens. Proceedings of the 37th annual conference of the Agricultural Society of Nigeria, University of Calabar. Pp. 216- 220.

79. Ofor, C.O. and Okpara, D.A. (2005): Use of soybeans in recycling pond mud nutrients in integrated fish farming. Proceedings of the 20th Annual Conference of the Fisheries Society of Nigeria, Port Harcourt, November 25, 2005

80.    Ikeorgu, J.G., Okpara, D.A. and Ogbonna, M.C. (2007). Evaluation of legume covercrops for Imperata weed suppression, soil fertility improvement and yam production in south eastern Nigeria. Proceedings of a technical workshop on progress in yam research for development in west and central Africa held in Accra, Ghana, 11-13 Sept. 2007.

81. Okpara, D.A. (2008). Sweet potato production in south eastern Nigeria. Proceedings of sweet potato in Nigeria conference, Ibadan, Nigeria, 16 -18 September 2008.

82. Okpara, D.A. (2011): Organic farming as soil fertility maintenance options in the humid tropics. In: Globalization and Rural Development in Nigeria (Eds – Nwachukwu and Ekwe) Extension Centre, Michael Okpara University of Agriculture, Umudike, Nigeria

83. Simonyan, K. J., Ehiem, J.C., Okafor-Yadi, O., Akani, A.O., Okpara, D.A., Simonyan, J.B., Akachukwu, C.O. and Onumadu, F. (2014). Effects of moisture content and loading orientation on some mechanical behaviour of Irvingia wombolu nut. 2014 ASABE and CSBE/SCGAB Annual International Meeting, Montreal, Quebec Canada July 13-16, 2014

84. Okpara, D.A., Muoneke, C.O., Ofor, C., Orji, R, Ibiam, B., Onwuka, J. and Ekeleme, F. (2014). Eggplant performance in organic and inorganic systems in south eastern Nigeria. Proceedings of the 4th ISOFAR Scientific Conference. Building Organic Bridges, at the Organic World Congress 2014, 13-15 Oct., Istanbul, Turkey.

85. Muoneke, C.O., Okpara, D.A., Ofor, C., Orji, R, Onwuka, J. and Ibiam, B. (2014). Organic/inorganic leaf amaranth production: the case of poultry manure, fish effluent and NPK fertilizer. Proceedings of the 4th ISOFAR Scientific Conference, Building Organic Bridges, at the Organic World Congress 2014, 13-15 Oct., Istanbul, Turkey.

86. Akpaninyang, F.E., Okpara, D.A., Njoku, J.C. and Ogbologwung, L.P. (2014). Effect of fertilizer combination on the growth of two orange-fleshed sweet potato (Ipomea batatas (l.) Lam) varieties in a humid environment of south eastern Nigeria. Proceedings of second annual Conference of Crop Science Society of Nigeria, 21-26 September 2014, University of Nigeria, Nsukka.

 

REFEREES

 

10.

Referees

 

1.     Prof. M.O. Iwe

Deputy Vice Chancellor (Academic)

Michael Okpara University of Agriculture, Umudike

 

2.     Prof. C.O. Muoneke

Former Dean

Postgraduate School

Michael Okpara University of Agriculture, Umudike

 

3.     Rev. J.C. Ndukwe

District Superintendent

Umuahia North Jerusalem District

Assemblies of God Nigeria

 

 

 

Prof. D.A Okpara