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Research facility · Umuahia · Nigeria

National Root Crops Research Institute

In research, National Root Crops Research Institute stands highest in Agricultural and Biological Sciences (#2,457 of 5,126 worldwide), Life Sciences (#6,389 of 11,023 worldwide) and Plant Science (#1,557 of 2,489 worldwide), over all time. Relative to its size it is most specialised in Plant Science and Agricultural and Biological Sciences (Plant Science is 20.5× its share of world research).

nrcri.gov.ngROR OpenAlex
World rank, 2022-now
#22,039
of 22,385 · #28,619 all time
Rank in Nigeria
#183
of 183
Research works
401
▼ 43% vs 2018-21
Citations
3.5k
8.7 per fractional work
Top-10% rate
8.1%
all institutions 10.0%
vs its own fields
0.94×
1.00× is exactly expected
Open access
70%
world 40%
International
16%
world 18%
National Root Crops Research Institute

What is National Root Crops Research Institute known for in research?

The fields where it stands highest, over all time, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorks
Agricultural and Biological SciencesField #2,457 of 5,126 6.0%293
Life SciencesDomain #6,389 of 11,023 6.0%318
Plant ScienceSubfield #1,557 of 2,489 8.1%121

Each strip is that field's whole ranked pool, with the notch where National Root Crops Research Institute sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no average mark, because the average differs by field (from about 6% in Dentistry to 21% in Economics).

Which fields of science does National Root Crops Research Institute work in?

In 2022-now, 76% of research at National Root Crops Research Institute is in Life Sciences, 10% in Health Sciences. Its largest fields are Agricultural and Biological Sciences (67%), Biochemistry, Genetics and Molecular Biology (5%), Medicine (4%). It does 4.7× the world's share of Life Sciences.

Life Sciences: 62 fractional works · 75.6% of its workAgricultural and Biological Sciences: 55 fractional works · 66.7% of its workPlant Science: 30 fractional works · 35.7% of its workFood Science: 8 fractional works · 9.5% of its workGeneral Agricultural and Biological Sciences: 7 fractional works · 8.7% of its workAnimal Science and Zoology: 2 fractional works · 3.0% of its workSoil Science: 2 fractional works · 2.7% of its workAgronomy and Crop Science: 2 fractional works · 2.7% of its workEcology, Evolution, Behavior and Systematics: 2 fractional works · 2.2% of its workForestry: 1 fractional works · 1.1% of its workHorticulture: 0 fractional works · 0.4% of its workInsect Science: 0 fractional works · 0.3% of its workAquatic Science: 0 fractional works · 0.2% of its workBiochemistry, Genetics and Molecular Biology: 4 fractional works · 4.8% of its workGenetics: 2 fractional works · 2.3% of its workMolecular Biology: 1 fractional works · 1.3% of its workCell Biology: 1 fractional works · 0.7% of its workBiotechnology: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.2% of its workPharmacology, Toxicology and Pharmaceutics: 3 fractional works · 4.1% of its workPharmacology: 3 fractional works · 4.1% of its workHealth Sciences: 8 fractional works · 9.9% of its workMedicine: 3 fractional works · 4.2% of its workComplementary and alternative medicine: 1 fractional works · 1.2% of its workPublic Health, Environmental and Occupational Health: 1 fractional works · 0.7% of its workEpidemiology: 0 fractional works · 0.5% of its workSurgery: 0 fractional works · 0.3% of its workRheumatology: 0 fractional works · 0.3% of its workPulmonary and Respiratory Medicine: 0 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 1.0% of its workNursing: 3 fractional works · 4.1% of its workNutrition and Dietetics: 3 fractional works · 4.1% of its workHealth Professions: 1 fractional works · 1.2% of its workGeneral Health Professions: 1 fractional works · 1.2% of its workVeterinary: 0 fractional works · 0.4% of its workSmall Animals: 0 fractional works · 0.4% of its workPhysical Sciences: 7 fractional works · 8.1% of its workEnvironmental Science: 3 fractional works · 3.6% of its workPollution: 1 fractional works · 1.3% of its workEcology: 1 fractional works · 1.1% of its workManagement, Monitoring, Policy and Law: 0 fractional works · 0.4% of its workWater Science and Technology: 0 fractional works · 0.3% of its workIndustrial and Manufacturing Engineering: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.4% of its workEngineering: 2 fractional works · 2.8% of its workMedia Technology: 1 fractional works · 1.2% of its workMechanical Engineering: 1 fractional works · 0.7% of its workMechanics of Materials: 0 fractional works · 0.5% of its workBiomedical Engineering: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.2% of its workChemistry: 1 fractional works · 1.0% of its workAnalytical Chemistry: 0 fractional works · 0.5% of its workOrganic Chemistry: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.1% of its workEnergy: 0 fractional works · 0.4% of its workRenewable Energy, Sustainability and the Environment: 0 fractional works · 0.4% of its workComputer Science: 0 fractional works · 0.1% of its workMaterials Science: 0 fractional works · 0.1% of its workSocial Sciences: 5 fractional works · 6.5% of its workBusiness, Management and Accounting: 2 fractional works · 3.0% of its workStrategy and Management: 2 fractional works · 1.9% of its workBusiness and International Management: 0 fractional works · 0.4% of its workManagement of Technology and Innovation: 0 fractional works · 0.4% of its workAccounting: 0 fractional works · 0.2% of its workSocial Sciences: 2 fractional works · 2.5% of its workGeography, Planning and Development: 1 fractional works · 1.3% of its workEducation: 0 fractional works · 0.6% of its workGender Studies: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.2% of its workEconomics, Econometrics and Finance: 1 fractional works · 0.8% of its workEconomics and Econometrics: 1 fractional works · 0.6% of its workFinance: 0 fractional works · 0.2% of its workPsychology: 0 fractional works · 0.2% of its workALL ITS WORKNational RootCrops Research…83fractional works, 2022-now
Life Sciences76%Physical Sciences8%Health Sciences10%Social Sciences6%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in 2022-now. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this institution does than the world.

Its 4 domains and 17 fields, with their numbers
    1. Agricultural and Biological Sciences5566.7%
    2. Biochemistry, Genetics and Molecular Biology44.8%
    3. Pharmacology, Toxicology and Pharmaceutics34.1%
    1. Medicine34.2%
    2. Nursing34.1%
    3. Health Professions11.2%
    4. Veterinary00.4%
    1. Environmental Science33.6%
    2. Engineering22.8%
    3. Chemistry11.0%
    4. Energy00.4%
    5. Computer Science00.1%
    6. Materials Science00.1%
    1. Business, Management and Accounting23.0%
    2. Social Sciences22.5%
    3. Economics, Econometrics and Finance10.8%
    4. Psychology00.2%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What does National Root Crops Research Institute specialise in?

Where its research is concentrated relative to its size: Plant Science takes 20.5× the share of its output that it takes of world research.

  1. Plant ScienceSubfield · 29.5 works20×
  2. Agricultural and Biological SciencesField · 55.1 works14×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 14.03× its world share, 55 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.90× its world share, 4 worksBiochemistry, Geneti…Pharmacology, Toxicology and Pharmaceutics: 11.64× its world share, 3 worksPharmacology, Toxico…Chemistry: 0.62× its world share, 1 worksChemistryComputer Science: 0.02× its world share, 0 worksComputer ScienceEnergy: 0.47× its world share, 0 worksEnergyEngineering: 0.19× its world share, 2 worksEngineeringEnvironmental Science: 0.73× its world share, 3 worksEnvironmental ScienceMaterials Science: 0.04× its world share, 0 worksMaterials ScienceHealth Professions: 0.47× its world share, 1 worksHealth ProfessionsMedicine: 0.22× its world share, 3 worksMedicineNursing: 8.32× its world share, 3 worksNursingVeterinary: 2.97× its world share, 0 worksVeterinaryBusiness, Management and Accounting: 0.92× its world share, 2 worksBusiness, Management…Economics, Econometrics and Finance: 0.39× its world share, 1 worksEconomics, Econometr…Psychology: 0.05× its world share, 0 worksPsychologySocial Sciences: 0.20× its world share, 2 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Agricultural and Biological Sciences, 14.0×. Every wedge is a field page.

All 17 fields, with their numbers
  1. Agricultural and Biological Sciences14.03×55 works
  2. Pharmacology, Toxicology and Pharmaceutics11.64×3 works
  3. Nursing8.32×3 works
  4. Veterinary2.97×0 works
  5. Business, Management and Accounting0.92×2 works
  6. Biochemistry, Genetics and Molecular Biology0.90×4 works
  7. Environmental Science0.73×3 works
  8. Chemistry0.62×1 works
  9. Energy0.47×0 works
  10. Health Professions0.47×1 works
  11. Economics, Econometrics and Finance0.39×1 works
  12. Medicine0.22×3 works
  13. Social Sciences0.20×2 works
  14. Engineering0.19×2 works
  15. Psychology0.05×0 works
  16. Materials Science0.04×0 works
  17. Computer Science0.02×0 works

Who are the top researchers at National Root Crops Research Institute?

Ranked on the quality score, Jude Ejikeme Obidiegwu, Cynthia Adaku Chilaka and Chiedozie Ngozi Egesi lead among researchers whose main affiliation is National Root Crops Research Institute.

  1. 1 Jude Ejikeme Obidiegwu Nigeria · #389,090 worldwide 1.5k citations · 42 works
  2. 2 Cynthia Adaku Chilaka Nigeria · #570,514 worldwide 1.4k citations · 32 works
  3. 3 Chiedozie Ngozi Egesi Nigeria · #680,234 worldwide 4.4k citations · 149 works
  4. 4 Tessy Madu Nigeria · #1,256,789 worldwide 487 citations · 42 works
  5. 5 Benjamin Okoye Nigeria · #1,487,399 worldwide 256 citations · 23 works
  6. 6 Chukwuemeka K. Nkere Nigeria · #1,781,733 worldwide 339 citations · 20 works
  7. 7 Confidence Kalu Nigeria · #1,809,813 worldwide 197 citations · 22 works
  8. 8 Ihuoma C. Okwuonu Nigeria · #1,989,691 worldwide 319 citations · 18 works
  9. 9 Miriam Ahunna Ofoeze Nigeria · #2,574,550 worldwide 108 citations · 25 works
  10. 10 M. C. M. Porto Nigeria · #2,615,314 worldwide 337 citations · 21 works
All ranked researchers at National Root Crops Research Institute

What are the most cited papers from National Root Crops Research Institute?

The most cited paper from National Root Crops Research Institute is "Widespread natural variation of DNA methylation within angiosperms" (Chad E. Niederhuth, Adam J. Bewick, Lexiang Ji et al., 2016), with 609 citations. Next come "Review of the mechanism of cell death resulting from streptozotocin challenge in experimental animals, its practical use and potential risk to humans" (460) and "Sequencing wild and cultivated cassava and related species reveals extensive interspecific hybridization and genetic diversity" (452).

Most cited papers
#PaperReleasedCitations
1 Widespread natural variation of DNA methylation within angiosperms Chad E. Niederhuth, Adam J. Bewick, Lexiang Ji et al. · Genome biology Open access 23 Sep 2016 609
2 Review of the mechanism of cell death resulting from streptozotocin challenge in experimental animals, its practical use and potential risk to humans Chinedum Ogbonnaya Eleazu, Kate Chinedum Eleazu, S Chukwuma et al. · Journal of Diabetes & Metabolic Disorders Open access 23 Dec 2013 460
3 Sequencing wild and cultivated cassava and related species reveals extensive interspecific hybridization and genetic diversity Jessen V. Bredeson et al. · Nature Biotechnology Open access 18 Apr 2016 452
4 The BioCassava Plus Program: Biofortification of Cassava for Sub-Saharan Africa Richard T. Sayre, JOHN R. BEECHING, Edgar B. Cahoon et al. · Annual Review of Plant Biology Review 3 Mar 2011 319
5 Cassava haplotype map highlights fixation of deleterious mutations during clonal propagation Punna Ramu, Williams Esuma, R. Kawuki et al. · Nature Genetics Open access 17 Apr 2017 292
All 58 most cited papers, with filters and sorting

Which keywords describe research at National Root Crops Research Institute?

By fractional works in 2022-now, weighted toward what it does more of than the world: Genomic Sequencing, Cassava, Cyanogenic Glycosides, Sustainable Agriculture, Rural Development, Smallholder Farmers, Genetic Diversity and Social Networks.

▲ more of its work than of the world's◆ about the world's share▼ less than the world's

Size is fractional works in 2022-now in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Genomic Sequencing11▲ 114×2 topics
  2. Cassava11▲ 715×1 topic
  3. Cyanogenic Glycosides11▲ 715×1 topic
  4. Sustainable Agriculture10▲ 38×8 topics
  5. Rural Development8▲ 27×4 topics
  6. Smallholder Farmers8▲ 44×5 topics
  7. Genetic Diversity7▲ 21×11 topics
  8. Social Networks6▲ 28×2 topics
  9. Agricultural Innovation6▲ 159×1 topic
  10. Drought Tolerance6▲ 53×7 topics
  11. Livelihood Diversification6▲ 236×1 topic
  12. Food Security6▲ 13×9 topics
  13. Antioxidant5▲ 8.7×11 topics
  14. Genetics5▲ 8.4×4 topics
  15. Antioxidant Activity5▲ 9.0×10 topics
  16. Bioactive Compounds4▲ 22×8 topics
  17. Dietary Fiber4▲ 50×3 topics
  18. Nutritional Quality4▲ 68×4 topics
  19. Anti-inflammatory4▲ 16×5 topics
  20. Rheological Properties4▲ 26×2 topics
  21. Breeding4▲ 59×4 topics
  22. Climate Resilience4▲ 75×2 topics
  23. Health Benefits4▲ 14×7 topics
  24. Marker Development4▲ 90×3 topics
  25. Domestication3▲ 78×3 topics
  26. Toxicity3▲ 8.8×2 topics
  27. Metabolism3▲ 7.0×3 topics
  28. Pharmacological3▲ 126×2 topics
  29. Plant Nutrition3▲ 41×2 topics
  30. Biofortification3▲ 87×1 topic
  31. Ginger3▲ 230×1 topic
  32. Mineral Elements3▲ 155×1 topic
  33. Zingiber officinale3▲ 230×1 topic
  34. Agricultural Sustainability3▲ 31×1 topic
  35. Cowpea3▲ 149×1 topic
  36. Potato3▲ 96×2 topics
  37. Agriculture3▲ 8.8×4 topics
  38. Glycemic Index3▲ 59×1 topic
  39. Starch3▲ 59×1 topic
  40. Antioxidants3▲ 7.2×3 topics

Which research topics does National Root Crops Research Institute publish most on?

By volume in 2022-now: Cassava research and cyanide, Agricultural Innovations and Practices, Ginger and Zingiberaceae research and Plant Micronutrient Interactions and Effects.

Cassava research and cya…11Cassava research and cyanide: 11 fractional worksAgricultural Innovations…6Agricultural Innovations and Practices: 6 fractional worksGinger and Zingiberaceae…3Ginger and Zingiberaceae research: 3 fractional worksPlant Micronutrient Interactions and Effects: 3 fractional worksAgricultural pest management studies: 3 fractional worksFood composition and pro…3Food composition and properties: 3 fractional worksPotato Plant Research: 2 fractional worksBanana Cultivation and Research: 2 fractional worksAgronomic Practices and Intercropping Systems: 2 fractional worksAdvances in Cucurbitaceae Research: 1 fractional works
Plant ScienceGeneral Agricultural and Biological SciencesPharmacologyNutrition and Dietetics3 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Cassava research and cyanide Plant Science 11 works
  2. 2 Agricultural Innovations and Practices General Agricultural and Biological Sciences 6 works
  3. 3 Ginger and Zingiberaceae research Pharmacology 3 works
  4. 4 Plant Micronutrient Interactions and Effects Plant Science 3 works
  5. 5 Agricultural pest management studies Plant Science 3 works
  6. 6 Food composition and properties Nutrition and Dietetics 3 works
  7. 7 Potato Plant Research Food Science 2 works
  8. 8 Banana Cultivation and Research Plant Science 2 works
  9. 9 Agronomic Practices and Intercropping Systems Agronomy and Crop Science 2 works
  10. 10 Advances in Cucurbitaceae Research Genetics 1 works

How open and international is its research?

Against the world's own shares: the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available69.6%not open30.4%

World: 40% of research is openly available.

with international co-authors15.8%domestic only84.2%

World: 18% is written across borders.

How has National Root Crops Research Institute's research output changed?

Output in 2022-2025 was 43% lower than in 2018-2021.

still counting1990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is National Root Crops Research Institute as a percentage of every work published that year, 0.00025% in 2024.

still counting0.00050%0.0010%0.0015%National Root Crops Research Institute0.00034% in 202519801990200020102020

Fractional works of National Root Crops Research Institute over all fractional works that year. How the balance of science has shifted.

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National Root Crops Research Institute on Science Explorer

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