Science Explorer Back to mapMap
Discussion
Research facility · Nelspruit · South Africa

Citrus Research International

In research, Citrus Research International stands highest in Life Sciences (#4,715 of 11,023 worldwide), Agricultural and Biological Sciences (#2,621 of 5,126 worldwide) and Plant Science (#1,334 of 2,489 worldwide), over all time. Relative to its size it is most specialised in Plant Science, Agricultural and Biological Sciences and Life Sciences (Plant Science is 19.4× its share of world research).

citrusres.comROR OpenAlex
World rank, all time
#24,165
of 34,923
Rank in South Africa
#91
of 126
Research works
394
▲ 15% vs 2018-21
Citations
7k
17.7 per fractional work
Top-10% rate
6.3%
all institutions 10.0%
vs its own fields
0.89×
1.00× is exactly expected
Open access
42%
world 40%
International
23%
world 18%
Citrus Research International

What is Citrus Research International 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
Life SciencesDomain #4,715 of 11,023 6.6%300
Agricultural and Biological SciencesField #2,621 of 5,126 6.4%244
Plant ScienceSubfield #1,334 of 2,489 6.4%140

Each strip is that field's whole ranked pool, with the notch where Citrus Research International 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 Citrus Research International work in?

In 2022-now, 72% of research at Citrus Research International is in Life Sciences, 14% in Physical Sciences. Its largest fields are Agricultural and Biological Sciences (60%), Biochemistry, Genetics and Molecular Biology (12%), Environmental Science (8%). It does 4.3× the world's share of Life Sciences.

Life Sciences: 46 fractional works · 72.1% of its workAgricultural and Biological Sciences: 38 fractional works · 59.8% of its workPlant Science: 22 fractional works · 33.9% of its workInsect Science: 10 fractional works · 15.1% of its workEcology, Evolution, Behavior and Systematics: 3 fractional works · 4.1% of its workFood Science: 2 fractional works · 3.2% of its workGeneral Agricultural and Biological Sciences: 1 fractional works · 1.0% of its workHorticulture: 1 fractional works · 1.0% of its workSoil Science: 0 fractional works · 0.7% of its workAnimal Science and Zoology: 0 fractional works · 0.4% of its workAgronomy and Crop Science: 0 fractional works · 0.3% of its workBiochemistry, Genetics and Molecular Biology: 8 fractional works · 12.2% of its workMolecular Biology: 3 fractional works · 4.0% of its workEndocrinology: 2 fractional works · 3.9% of its workCell Biology: 2 fractional works · 3.8% of its workGenetics: 0 fractional works · 0.5% of its workImmunology and Microbiology: 0 fractional works · 0.1% of its workPhysical Sciences: 9 fractional works · 13.6% of its workEnvironmental Science: 5 fractional works · 8.0% of its workEcology: 2 fractional works · 2.6% of its workManagement, Monitoring, Policy and Law: 1 fractional works · 1.7% of its workEnvironmental Engineering: 1 fractional works · 0.9% of its workHealth, Toxicology and Mutagenesis: 0 fractional works · 0.8% of its workGlobal and Planetary Change: 0 fractional works · 0.6% of its workIndustrial and Manufacturing Engineering: 0 fractional works · 0.5% of its workPollution: 0 fractional works · 0.5% of its workNature and Landscape Conservation: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workEngineering: 3 fractional works · 4.2% of its workMechanical Engineering: 0 fractional works · 0.7% of its workCivil and Structural Engineering: 0 fractional works · 0.7% of its workMedia Technology: 0 fractional works · 0.7% of its workOcean Engineering: 0 fractional works · 0.7% of its workArchitecture: 0 fractional works · 0.5% of its workBuilding and Construction: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.6% of its workEarth and Planetary Sciences: 0 fractional works · 0.6% of its workGeochemistry and Petrology: 0 fractional works · 0.3% of its workEarth-Surface Processes: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.2% of its workComputer Science: 0 fractional works · 0.6% of its workComputer Networks and Communications: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.3% of its workEnergy: 0 fractional works · 0.2% of its workSocial Sciences: 6 fractional works · 9.8% of its workSocial Sciences: 4 fractional works · 6.1% of its workUrban Studies: 1 fractional works · 1.6% of its workPolitical Science and International Relations: 1 fractional works · 1.2% of its workSociology and Political Science: 1 fractional works · 1.2% of its workGeography, Planning and Development: 1 fractional works · 1.0% of its workEducation: 0 fractional works · 0.5% of its workGender Studies: 0 fractional works · 0.3% of its workHealth: 0 fractional works · 0.3% of its workArts and Humanities: 1 fractional works · 1.7% of its workArcheology: 0 fractional works · 0.5% of its workConservation: 0 fractional works · 0.5% of its workPhilosophy: 0 fractional works · 0.4% of its workSmaller subfields together: 0 fractional works · 0.3% of its workBusiness, Management and Accounting: 1 fractional works · 1.6% of its workStrategy and Management: 1 fractional works · 1.3% of its workSmaller subfields together: 0 fractional works · 0.3% of its workPsychology: 0 fractional works · 0.3% of its workEconomics, Econometrics and Finance: 0 fractional works · 0.1% of its workDecision Sciences: 0 fractional works · 0.0% of its workHealth Sciences: 3 fractional works · 4.6% of its workMedicine: 2 fractional works · 3.5% of its workPublic Health, Environmental and Occupational Health: 1 fractional works · 0.9% of its workBiochemistry: 0 fractional works · 0.5% of its workEpidemiology: 0 fractional works · 0.4% of its workOphthalmology: 0 fractional works · 0.3% of its workComplementary and alternative medicine: 0 fractional works · 0.3% of its workFamily Practice: 0 fractional works · 0.3% of its workPulmonary and Respiratory Medicine: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.6% of its workHealth Professions: 0 fractional works · 0.6% of its workGeneral Health Professions: 0 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.3% of its workVeterinary: 0 fractional works · 0.5% of its workSmall Animals: 0 fractional works · 0.5% of its workALL ITS WORKCitrus ResearchInternational64fractional works, 2022-now
Life Sciences72%Physical Sciences14%Health Sciences5%Social Sciences10%

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 Sciences3859.8%
    2. Biochemistry, Genetics and Molecular Biology812.2%
    3. Immunology and Microbiology00.1%
    1. Environmental Science58.0%
    2. Engineering34.2%
    3. Earth and Planetary Sciences00.6%
    4. Computer Science00.6%
    5. Energy00.2%
    1. Social Sciences46.1%
    2. Arts and Humanities11.7%
    3. Business, Management and Accounting11.6%
    4. Psychology00.3%
    5. Economics, Econometrics and Finance00.1%
    6. Decision Sciences00.0%
    1. Medicine23.5%
    2. Health Professions00.6%
    3. Veterinary00.5%
All of science, and how each field's share has moved since 1950: the Science domain explorer

What does Citrus Research International specialise in?

Where its research is concentrated relative to its size: Plant Science takes 19.4× the share of its output that it takes of world research.

  1. Plant ScienceSubfield · 21.7 works19×
  2. Agricultural and Biological SciencesField · 38.3 works13×
  3. Life SciencesDomain · 46.2 works5.5×
← 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: 12.59× its world share, 38 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 2.28× its world share, 8 worksBiochemistry, Geneti…Immunology and Microbiology: 0.13× its world share, 0 worksImmunology and Micro…Computer Science: 0.07× its world share, 0 worksComputer ScienceEarth and Planetary Sciences: 0.40× its world share, 0 worksEarth and Planetary …Energy: 0.19× its world share, 0 worksEnergyEngineering: 0.28× its world share, 3 worksEngineeringEnvironmental Science: 1.61× its world share, 5 worksEnvironmental ScienceHealth Professions: 0.22× its world share, 0 worksHealth ProfessionsMedicine: 0.18× its world share, 2 worksMedicineVeterinary: 3.83× its world share, 0 worksVeterinaryArts and Humanities: 0.59× its world share, 1 worksArts and HumanitiesBusiness, Management and Accounting: 0.48× its world share, 1 worksBusiness, Management…Decision Sciences: 0.04× its world share, 0 worksDecision SciencesEconomics, Econometrics and Finance: 0.06× its world share, 0 worksEconomics, Econometr…Psychology: 0.09× its world share, 0 worksPsychologySocial Sciences: 0.48× its world share, 4 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Agricultural and Biological Sciences, 12.6×. Every wedge is a field page.

All 17 fields, with their numbers
  1. Agricultural and Biological Sciences12.59×38 works
  2. Veterinary3.83×0 works
  3. Biochemistry, Genetics and Molecular Biology2.28×8 works
  4. Environmental Science1.61×5 works
  5. Arts and Humanities0.59×1 works
  6. Business, Management and Accounting0.48×1 works
  7. Social Sciences0.48×4 works
  8. Earth and Planetary Sciences0.40×0 works
  9. Engineering0.28×3 works
  10. Health Professions0.22×0 works
  11. Energy0.19×0 works
  12. Medicine0.18×2 works
  13. Immunology and Microbiology0.13×0 works
  14. Psychology0.09×0 works
  15. Computer Science0.07×0 works
  16. Economics, Econometrics and Finance0.06×0 works
  17. Decision Sciences0.04×0 works

Who are the top researchers at Citrus Research International?

Ranked on the quality score, Graeme K. Mather, Raimund H. Marloth and V. Hattingh lead among researchers whose main affiliation is Citrus Research International.

  1. 1 Graeme K. Mather South Africa · #2,707,331 worldwide 553 citations · 25 works
  2. 2 Raimund H. Marloth South Africa · #3,161,981 worldwide 62 citations · 46 works
  3. 3 V. Hattingh South Africa · #3,617,808 worldwide 1.3k citations · 55 works
  4. 4 Johannes H. J. Breytenbach South Africa · #3,631,900 worldwide 230 citations · 21 works
  5. 5 Chanel Steyn South Africa · #3,792,438 worldwide 223 citations · 22 works
  6. 6 Glynnis Cook South Africa · #4,503,554 worldwide 455 citations · 53 works
  7. 7 Elma Carstens South Africa · #4,517,413 worldwide 268 citations · 27 works
  8. 8 Wayne Kirkman South Africa · #4,662,246 worldwide 398 citations · 32 works
  9. 9 P. Willers South Africa · #4,673,135 worldwide 39 citations · 15 works
  10. 10 Gerhardus C. Schutte South Africa · #4,727,986 worldwide 631 citations · 31 works
All ranked researchers at Citrus Research International

What are the most cited papers from Citrus Research International?

The most cited paper from Citrus Research International is "NIR Spectroscopy Applications for Internal and External Quality Analysis of Citrus Fruit—A Review" (Lembe Samukelo Magwaza, Umezuruike Linus Opara, Helene H. Nieuwoudt et al., 2011), with 463 citations. Next come "Digital twins are coming: Will we need them in supply chains of fresh horticultural produce?" (198) and "Stress physiology: The functional significance of the accumulation of nitrogen-containing compounds" (192).

Most cited papers
#PaperReleasedCitations
1 NIR Spectroscopy Applications for Internal and External Quality Analysis of Citrus Fruit—A Review Lembe Samukelo Magwaza, Umezuruike Linus Opara, Helene H. Nieuwoudt et al. · Food and Bioprocess Technology 5 Oct 2011 463
2 Digital twins are coming: Will we need them in supply chains of fresh horticultural produce? Thijs Defraeye, Chandrima Shrivastava, Tarl Michael Berry et al. · Trends in Food Science & Technology Open access 14 Jan 2021 198
3 Stress physiology: The functional significance of the accumulation of nitrogen-containing compounds E. Rare · Journal of Horticultural Science 1990 192
4 Isolation and identification of entomopathogenic nematodes from citrus orchards in South Africa and their biocontrol potential against false codling moth Antoinette Paula Malan, Rinus Knoetze, Sean D. Moore · Journal of Invertebrate Pathology 5 Aug 2011 177
5 Calculations Pertaining to Hygroscopic Seeding with Flares William A. Cooper, Roelof Bruintjes, Graeme K. Mather · Journal of applied meteorology Nov 1997 175
All 60 most cited papers, with filters and sorting

Which keywords describe research at Citrus Research International?

By fractional works in 2022-now, weighted toward what it does more of than the world: Biological Control, Invasive Species, Pest Management, Plant Immunity, Phylogenetic Analysis, Population Dynamics, Genome Sequencing and Host Specificity.

▲ 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. Biological Control11▲ 114×8 topics
  2. Invasive Species6▲ 22×10 topics
  3. Pest Management6▲ 111×4 topics
  4. Climate Change6▲ 3.2×15 topics
  5. Plant Immunity4▲ 73×2 topics
  6. Phylogenetic Analysis4▲ 22×7 topics
  7. Population Dynamics4▲ 27×6 topics
  8. Genome Sequencing4▲ 42×3 topics
  9. Host Specificity4▲ 57×4 topics
  10. Gene Silencing4▲ 64×1 topic
  11. Viral RNA Silencing4▲ 166×1 topic
  12. Microbiota4▲ 27×2 topics
  13. Drosophila Suzukii3▲ 378×1 topic
  14. Fruit Fly3▲ 378×1 topic
  15. Sustainability3▲ 2.0×12 topics
  16. Huanglongbing3▲ 428×1 topic
  17. Pathogen Transmission3▲ 70×2 topics
  18. Phytoplasmas3▲ 428×1 topic
  19. Biopesticides3▲ 69×2 topics
  20. Fungal Pathogens3▲ 34×2 topics
  21. Plant Defense3▲ 81×2 topics
  22. Horizontal Gene Transfer3▲ 63×2 topics
  23. Fungal Symbiosis2▲ 319×1 topic
  24. Mycoviruses2▲ 319×1 topic
  25. Endophytic Fungi2▲ 42×1 topic
  26. Genomic Characterization2▲ 30×1 topic
  27. Herbivore-Induced Plant Volatiles2▲ 86×1 topic
  28. Jasmonate Signaling2▲ 86×1 topic
  29. Plant Hormones2▲ 59×2 topics
  30. Sustainable Agriculture2▲ 10×4 topics
  31. Aroma Compounds2▲ 33×2 topics
  32. Genetic Diversity2▲ 6.9×5 topics
  33. Modified Atmosphere Packaging2▲ 35×2 topics
  34. Plant Pathogens2▲ 94×3 topics
  35. Essential Oils2▲ 26×2 topics
  36. Ethylene Biosynthesis2▲ 97×1 topic
  37. Fruit Ripening2▲ 97×1 topic
  38. Consumer Perception2▲ 12×4 topics
  39. Plant Growth2▲ 24×4 topics
  40. Rootstock2▲ 46×2 topics

Which research topics does Citrus Research International publish most on?

By volume in 2022-now: Plant Virus Research Studies, Insect behavior and control techniques, Phytoplasmas and Hemiptera pathogens and Plant and Fungal Interactions Research.

Plant Virus Research Stu…4Plant Virus Research Studies: 4 fractional worksInsect behavior and cont…3Insect behavior and control techniques: 3 fractional worksPhytoplasmas and Hemipte…3Phytoplasmas and Hemiptera pathogens: 3 fractional worksPlant and Fungal Interac…2Plant and Fungal Interactions Research: 2 fractional worksPlant Pathogens and Fungal Diseases: 2 fractional worksInsect-Plant Interactions and Control: 2 fractional worksPostharvest Quality and …2Postharvest Quality and Shelf Life Management: 2 fractional worksEntomopathogenic Microorganisms in Pest Control: 2 fractional worksFood Supply Chain Traceability: 2 fractional worksInsect Pest Control Strategies: 2 fractional works
Plant ScienceInsect ScienceEndocrinologyCell Biology1 others

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

  1. 1 Plant Virus Research Studies Plant Science 4 works
  2. 2 Insect behavior and control techniques Insect Science 3 works
  3. 3 Phytoplasmas and Hemiptera pathogens Plant Science 3 works
  4. 4 Plant and Fungal Interactions Research Endocrinology 2 works
  5. 5 Plant Pathogens and Fungal Diseases Cell Biology 2 works
  6. 6 Insect-Plant Interactions and Control Insect Science 2 works
  7. 7 Postharvest Quality and Shelf Life Management Plant Science 2 works
  8. 8 Entomopathogenic Microorganisms in Pest Control Insect Science 2 works
  9. 9 Food Supply Chain Traceability Food Science 2 works
  10. 10 Insect Pest Control Strategies Plant Science 2 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 available41.8%not open58.2%

World: 40% of research is openly available.

with international co-authors22.7%domestic only77.3%

World: 18% is written across borders.

How has Citrus Research International's research output changed?

Output in 2022-2025 was 15% higher 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 Citrus Research International as a percentage of every work published that year, 0.00028% in 2024.

still counting0.0010%0.0020%0.0030%Citrus Research International0.00026% in 202519801990200020102020

Fractional works of Citrus Research International over all fractional works that year. How the balance of science has shifted.

Other research institutions in Nelspruit

All research institutions in Nelspruit

Share Citrus Research International's ranking

Citrus Research International on Science Explorer

A card with Citrus Research International's standing and the fields it leads in, for a post or a slide. A link to this page previews as the same card.

Download the card

1200 × 630 PNG, sized for social posts, drawn from the latest snapshot.

Badges for a website1Each links back here and updates with every snapshot

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners have tabs of their own, above.

Discussion

Ask a question or share a note about Citrus Research International. Posts are plain text and can be reported.