National Root Crops Research Institute Sub-station, Igbariam is an off-shoot of the National Root Crops Research Institute, Umudike, Umuahia, Abia State. It was established in the year 1979 as one of the five out stations established by the Institute. The Sub-station is cited at Igbariam in Anambra East L.G.A of Anambra State on longitude 070E N and Altitude 060E N. It shares a common boundary with Anambra State University Igbariam Campus now Chukwuemeka Odimegwu Ojikwu University.

The Sub-station occupies a land area of 16.601 hectares. It has two research farms outside the station (Ujakwu and Ogwugwuodo) with a total land area of 84.192 hectares.

Mandate of the out-station

Igbariam outstation is charged with responsibility to multiply root and tuber crops within the Institute’s mandate in the area located.

Also carry out research on root and tuber crops cited by researchers at the main Headquarters that are location specific.


Manpower Development

In line with Institute policy on manpower development, some staff are currently pursuing higher studies in different Institutions of higher learning within the locality on part time basis.


We have received and installed internet facility in the station courtesy of the Executive Director.

30 KVA Generator

A 30 KVA sound proof plant was purchased, installed, and commissioned in January 2013, courtesy of the Executive Director.

Physical Development

  • Administrative Building : Repainted and tiled with 2.2mm Italian ties
  • Old Administrative Building : Repainted. The open hall was half walled with blocks, repainted and tiled.
  • Renovation of Staff Quarters : The duty house of the Head of Station and other staff quarters were repainted by the Executive Director.
  • Renovation of Security Boot : Security boots in the main gate and near the plant house were repainted.
  • – Farm house at Ogwugwodo : In view of the far distant location of our farm lands at Ogwugwuodo and Ujakwu, the administration led by Dr J.C. Okonkwo- Executive Director in his magnanimity built a 16 m x 14 m farm house. This is to shelter field workers and materials during raining period.
  • Construction of Garage : A garage with four apartments was built by the Executive Director to house motorcycles, and vehicles for workers. Tractor has a space in the garage.
  • Construction of a Bath room :
    Considering the nature of our work which is 95% field activities, a two room apartment was built to enable male and female workers clean themselves when they come back from the field.
  • A contract to complete the connecting of the Sub-station to the National Grid was awarded and mobilization paid to the contractor. The contractor started work up to 40% but withdrew due to high cost of electrical materials.
  • Bole hole : In December, 2012 the Executive Director awarded a contract to Water is Life Drilling Company Awka, to drill a bore hole in the Sub-station. The Contractor was mobilized on 12th December, 2012. The Contractor started work and later abandoned the work.

Agricultural Transformation Agenda

  • Roll Out Cassava Growth Enhancement Support Scheme : Three states covered were namely: Anambra, Ebonyi and Imo. Each state received 100 bundles of improved cassava cuttings.
  • Cassava distribution : The following locations were covered.
Gwagwa Municipal Council, Abuja 845 bundles
Awka North L.G.A (Achalla) 150 bundles
Anambra East L.G.A (Farm Settlement) Igbariam 300 bundles
Oyi L.G.A (Nteje) 1185 bundles
Anambra State ADP Awka 1000 bundles
Njikoka L.G.A (Abagana) 690 bundles
NRCRI Sub-station (ATA Cassava Multiplication) 1181 bundles
Total 5351 bundles
  • Cassava Out Growers : Three cassava out growers from Anambra State were selected. The purpose was to sublet the multiplication of improved cassava varieties to out growers for Cassava Transformation Agenda.
  • CRC Project : T858 bundles of Improved Cassava varieties were sold to CRC project for distribution to Oyo and Benue States.

Research/Production Project

Research Number
On-going Experiments 3
New Experiments 4
Students Project 5
Total 12

External Funded Projects

West African Agricultural Productivity Project (WAAPP) seed yams 2 Ha
Yam Improvement for Income and Food Security in West Africa (YIIFSA) seed yam 1 Ha
Sustainable Cassava Weed Experiment 1 Ha
MAFF Yam Experiment 1 Ha
Total 5 Ha

Station Production Work

Seed Yam 1.30 Ha
Cassava Multiplication 20 Ha
Total        21.3 Ha


The Potato Programm, is located in Kuru on Jos Plateau (about 1230 meters above the sea level). It was opened in 1975 with the mandate to conduct demand-driving research leading to the development of improved potato genotypes and production packages for increased potato production and extending same to farmers in liaison with the ADPs. The low temperatures prevailing on the Plateau was a major factor in locating the Programme in this area. Being a temperate crop, potato requires a minimum temperature of 15-20oC for three consecutive months for successful production. This condition eliminates areas like Abia, Imo, Enugu and all States South of Benue and Kwara States. These areas are considered too hot for potato production. Apart from Jos Plateau, potato can also be grown on the Obudu highlands in Cross River State, Mambilla Plateau in Taraba State and Biu Plateau in Borno State. During the cold harmattan months of November – February, potato can also be grown in about eleven Northern States, namely: Borno, Yobe, Zamfara, Bauchi, Katsina, Kano, Gombe, Jigawa, Sokoto, Kaduna and Kebbi under irrigation.

About 95% of total potato production in Nigeria comes from Jos Plateau. In 1991 about 400,000 tonnes was produced in Nigeria. Current production estimate is about 1,450,000 tonnes. Potato is one of the fastest expanding tuber crops in Nigeria largely as a result of the impact of the programmes Research achievements.

These achievements in the areas of total production and expansion of the crop were possible as a result of the following research achievements:

Development of efficient potato storage structures.

 The potato programme successfully adapted the diffused light potato storage technology originally developed by the International potato center (CIP) to the local Nigerian conditions. Between 1996 and 1998 this structure was modified to reduce cost while still retaining its efficiency in other to improve adoption by end users. The diffused light potato storage structure (DLS) can be adapted for storage of seed and ware potato. It reduces storage losses at farmers’ level from 40% to less than 10% and can store potato tubers for 4 – 5 months.

Breeding and development of New Improved Potato Varieties

The programme is the most important source of new improved potato genotypes available to farmers in Nigeria. It is also an important source of high quality seed. This has helped to sustain high yields at farmer’s level. Among the locally bred varieties RC767-2, RC7716-4, RC7716-3 and RC777-3 are popular among farmers and are high yielding and resistant to major potato diseases and pests. The imported elite varieties that have been adapted to local conditions include Nicola, Bertita, Diamant, Kondor, Famosa and BR63-18. Some advanced potato genotypes received from CIP (International Potato Centre) are promising and are at advanced stages of evaluation preparatory to release. Tuberlets generated from True Potato Seed (TPS) received from the united State of America recently is being evaluated for cloning.

Improved Cultural Practices

(a) Weed Control;

(i) Critical time of weed interference established.

(ii) Best times for manual weeding established.

iii) Best intercropping systems established

  1. Use of botanicals to manage pests in potato established

(iii) Chemical weed control:

Sencor applied pre-emergence at 4 Lt/ha.

Galex applied pre-emergence at 5 Lt/ha.

(b) Fertilizer Rates:

(i) 100kgN & P205/ha + 100P/ha + 40kg K20/ha.

Applied by side dressing within 4 weeks after planting

(ii) Poultry manure at 4.5 tonnes/ha.

(c) Time of Planting: At the on-set of rains, April – May or

November – December for irrigated farming.

(d) Disease and Pests Control:

(i) Late blight

Early planting and use of early maturing varieties.

Use of resistant varieties.

Application of fungicides to plants;

Dithane at 2kg/ha

Ridomil MZ 1.5kg/ha.

(ii) Bacterial wilt

Use resistant varieties.

Rouging out of infected plants.

Identified Clones 392289.42, and 387300.125 as exhibiting low aphids infestation and severity of viral infection

Farmers have already adopted most these cultural practices developed by the Potato programme

Use of True Potato Seed in place of Seed Tubers for potato production

The technology developed adapted from the International Potato Centre (CIP) by the Potato Programme has the following advantages;

(i) The new technology reduced production cost of potato by over 40%.

Only 150 grammes needed to plant 1ha as against 2.0 tonnes of seed tubers.

(ii) Reduced storage cost of seed tuber by 30%. Seed tubers can only store outside refrigeration for 4 – 5 months, but TPS remain viable after 5 years of storage.

(iii) Use of TPS for planting eliminates most tuber borne diseases of potato e.g. Bacterial wilt.

(iv) Reduced Transportation costs of seed tube..

The new Technology is now at on-farm level of evaluation.

Extension Activities of the Potato Programme and ADPs

This has helped to transfer the developed technologies to farmers.

The adoption of the technologies by farmers was largely responsible for the expansion and increased production of potato.

Increase Networking in Collaborative Research in the Improvement of Seed Potato

quality and maintenance with (University of Jos, Lake Chad Research Institute, CIP, GIZ, Syngenta, ASTC)

Economics studies and socio-economic determinants of potato production established


Research Scientists/Officers

  1. Lenka D. M. (D. Agricultural economics). Chief Research officer. Coordinator, Head Kuru Sub-station
  2. Dalyop T., Y. (Sc., M.Sc. Entomology). Principal Research Officer
  3. Danbaba, A.K., (Sc. Crop breeding and Genetics). Principal Research Officer
  4. Dabels, V.Y., (Sc. Plant breeder). Senior Research Officer
  5. Daure, G.L., (Sc. Agronomy). Senior Research Office
  6. Haruna A.O. (Sc. Agricultural Climatology). Senior Research Office
  7. Wendeh F.Y. (Sc. Agricultural economics/Extension). Research Officer II

Agricultural Superintendents

  1. Lang, A.J. (HND Agricultural Economics/Extension) Chief Agricultural Supt
  2. Fom S. Vou. (HND Horticulture). Principal Agric. Supt
  3. Kwis, D.D. (HND Soil Conservation). Senior Agric. Supt
  4. Pwol , C. G. (HND Agricultural Extension and Management). Senior Agric. Supt
  5. Nuhu B. K. (HND Horticulture). Senior Agric. Supt.
  6. T.O. (B.Sc. Crop Production). Higher Agric. Supt.
  7. Damara R. (HND Microbiology) Lab/Technologist

Supporting Staff

  1. Goodluck, O.A. (HND Administration). Head Admin Unit
  2. Governor, S.H. (HND/ANAN Accounting). Head Accounts Unit
  3. Amos Lowaneti (OND Store Keeping). Senior Store Officer. Head Stores
  4. Itodo Jill. S. (OND Store Keeping/Purchasing). Higher Store Keeper. Purchasing Officer.

Supporting Staff

  1. International Potato Centre (CIP) Lima Peru
  2. Root and Tuber Crop Expansion Project (RTEP)
  3. National Stored Products Research Institute (NSPRI)
  4. Plateau State Agricultural Project (PADP)
  5. Taraba State Agricultural Project (TADP)
  6. Development in Nigeria (DIN), Obudu.
  7. Lake Chad Research Institute
  8. University of Jos
  9. GIZ
  10. Syngenta Nigeria Limited
  11. Agricultural Training and Services Centre. (ASTC) Vom

For Further Information

The Maro Out-Station located in MarabanKajuru of Kajuru Local Government Area of Kaduna State started in 2004 at Kachia with three Staff and later moved to its present location in 2005. From its three (3) Staff strength in 2004, it has risen to thirty three (33) of highly motivated work force by 2014. This has enabled the Station support the Institute in its concerted effort at achieving its National mandate for ginger and other commodity root crops.

The Station is equipped with two (2) office blocks fully covered by internet service, a functional tractor, borehole, a small meteorological station and a diesel electrical generating set. These research infrastructures have enabled the station to adequately carry out research activities. The Station currently carries out its work on two farms, one at Iburu provided by the Kajuru LGA of about 13 ha and the other in Maro of about 100 ha, graciously provided by these communities.


Notable achievements of the Station over the years are :

Carried out multi-location trials of the Institute in the agro-ecology as is peculiar with the North western part of Nigeria
Raising awareness and transfer of the Institute’s proven technologies in ginger and other mandate commodity root crops in the ecological zone
The production of 19 tons of foundation seed for ginger in support of the Government’s Agricultural Transformation Agenda (ATA).
Maintenance of the Station infrastructure that support research activities


  1. Dung, E.A. Principal Research Officer
  2. Oti, R.N. Research Officer I
  3. Akubuilo, N.M. Senoir Food Technologist
  4. Shaibu, I. Senior Agric. Superintendent.
  5. Yone, Rahab N. Higher Agric. Superintendent.
  6. Ekwonye, O.J. Higher Executive Officer Account.
  7. Marcus, A.B. Chief Mechanic Driver.
  8. Garba, S.T. Higher Agric. Superintendant.
  9. Shekari, J.B. Higher Excutive Officer Accout.
  10. Garkuwa, M.P. Higher Data Processing Officer.
  11. Aliyu, I. Admin Officer II.
  12. Musa, B.D. Excutive Officer Account.
  13. Magaji, D. Superintendant
  14. Buba, H. Executive Officer Account.
  15. Akwuruoha, V.C. Chief Agric. Overseer.
  16. Paul, A. Chief Agric. Field Overseer.
  17. Elisha.J. Asst. Chief Agric. Field Overseer.
  18. Afoli, R. Chief Agric. Field Overseer.
  19. Jeremiah, J. I. Chief Agric. Field Overseer.
  20. Yakubu, A. Executive Officer.
  21. Garba, S. Chief Agric. Field Overseer.
  22. Ibrahim, S. Chief Agric. Field Overseer.
  23. Sambo, J. Chief Agric. Field Overseer.
  24. Makama, L. Field Overseer.
  25. Bahago, G. Field Foreman
  26. Danzaria, S. Field Foreman
  27. Tanko, D. Field Foreman
  28. Joseph, F. Field Foreman
  29. Cyrus, Tiwo Titi. Clerical Officer.
  30. Sam Justina. Agric. Field Overseer.
  31. Nwuzu, C. Craftman.
  32. Usman, J. Agric. Field Overseer.
  33. Dido, D. Agric. Field Overseer.


[cq_vc_imageoverlay overlayshape=”square” image=”191″ icon_fontawesome=”” overlaytitle=”Internet facility and office block” overlaysize=”300″]
[cq_vc_imageoverlay overlayshape=”square” image=”193″ icon_fontawesome=”” overlaytitle=”A well mulched Station’s ginger farm” overlaysize=”300″]
[cq_vc_imageoverlay overlayshape=”square” image=”190″ icon_fontawesome=”” overlaytitle=”A small meteorological station” overlaysize=”300″]
[cq_vc_imageoverlay overlayshape=”square” image=”194″ icon_fontawesome=”” overlaytitle=”A heap of harvested ginger planting material” overlaysize=”300″]

Otobi substation of NRCRI was established in 1976 as an experimental and production site for root and tuber crops adaptable to the North-central Agro-ecological zone of Nigeria. The station has a land mass of 560 ha.

The station has been headed by 7 Heads of Station from inception to date


Research officers = 3
Agric Supts (SAS) = 4
Accts (Snr Accountant) = 3
Audit (SEO Audit) = 1
Admin = 3 (SAO = 1, AOII=1)
Planning Officer = 1
Tractor Operator = 1
Motor Drivers = 2
Asst Agric Supt = 2
Field Staff = 13(HFS = 2, SAFO = 5, CAFO = 1,Field attendants = 5)
Security Guards = 2
Number of staff = 35


Establishment of strong linkage with Benue, Kogi Nasarawa and Taraba State ADPs.
Citrus and pineapple orchards established on station.
Water works connection and reticulation in the substation completed
Bridging of the gully that separate Emene farm site from the rest of the compound completed
Farmer’s Field days have been held annually to empower farmers through promotion and popularization of improved root and tuber crops technologies to increase farmers income.
The station participated in farmers Field School organized by Benue state ADP in various communities especially at Onyagede, Akile in Makurdi, Odudaje.
Internet has been provided in the station
Two functional tractors are currently in the station
The station has furnished a staff canteen
25 experiments were sited on station in 2013.
Train the trainer : This was organized for Contact farmers, Extension agents and Agric science teachers and agricultural correspondents of Joy FM Otukpo
Schools Outreach Programme : This was carried out in two schools in Benue State. Akpa Community Secondary School Allan and St. Josephs College Obarike – Ito

Demo plots showcasing all released cassava varieties have been established on Station, and the following locations to popularize improved root and tuber crops varieties.

Benue State :   Ugbokolo, Otobi, Odudaje, Ugboju, Gboko, Katsina Ala, Adikpo, Makurdi and Okete

Kogi State : Idah (Ugbetulu) and Igalamela LGA Oforachi

Nassarawa State : Agyaragu

Taraba State : Wukari

ARCON building project completed and two staff quarters building renovation were also successfully completed
10 ha yam Multiplication in comprising of 3ha ware yam on station. The introduction of high quality yam varieties was commenced in 2012. In this effort, such high quality yam varieties as Peper, Punch, Ogoja, Amula, Aloshi, Obiaoturugo, Nwopoko, Abi and Hembakwase have been multiplied.
The station participated actively in the cassava transformation agenda of the Federal ministry of Agriculture through the Growth Enhancement Scheme as allocated to NRCRI Umudike by Cassava stem cuttings distribution to farmers in Benue state was 15, 931 Bundles in 2013

Cassava Growth Enhancement Scheme (GES) Demo plots were established in Otobi, Okete, and Ugboju

Cassava multiplication by Outgrowers in Benue State coordinated by Otobi = 40 ha
GES cassava multiplication on Otobi Substation = 30 ha
Total = 70 ha

Display of high yield from improved cassava


Distribution of improved cassava stem cuttings to farmers in Benue State


Showcasing improved cassava varieties in Otobi ubstation


School outreach programme Akpa Community secondary scool Allan Benue State


Training of women on seed yam multiplication through the Minisett technique at Idah Kogi State


Field demonstration with students at St Josephs college Obarike Ito Benue State


Visit to the exhibition stand mounted by Otobi Station by the Governing board


Visit by the Executive Director Dr. J.C.Okonkwo to Otobi substation


Training of farmers on seed yam multiplication through the Yam Minisett technique in Katsina Ala


Carting of improved cassava stem cuttings for distribution to farmers


Group Photograph of Otobi substation Staff with the Executive Director NRCRI Dr J.C. Okonkwo