S. Adjei‐Nsiah

University of Ghana

Also at Council for Scientific and Industrial Research, International Institute of Tropical Agriculture, International Institute of Tropical Agriculture, International Institute of Tropical Agriculture, International Institute of Tropical Agriculture, Council for Scientific and Industrial Research, International Institute of Tropical Agriculture, International Institute of Tropical Agriculture, International Institute of Tropical Agriculture, International Institute of Tropical Agriculture and Council of Scientific and Industrial Researchfrom their recent papers

Associate Professor and Head of Centre, University of Ghana, since 2018per ORCID
Scientist/Country Coordinator, International Institute of Tropical Agriculture, since 2014per ORCID

Publishing since 2004, latest 2026

Plant Science
Agronomy and Crop Science
General Agricultural and Biological Sciences
Soil Science
Ecology, Evolution, Behavior and Systematics
Ecology

In their own words

Sustainable intensification
fertility management
agricultural innovation systems

Publications: 1122004–2026
Citations: 4,062to those papers
h-index: 29i10-index 49
Field-weighted impact: 6.981.00 is the world average
World top 10%: 38%21 of 56 scored papers
Open access: 88%49 of the 56 whose access is recorded

26 other works — preprints, datasets and the like — are listed but not counted.

Google Scholar shows 5,593 citations, h-index 34 and i10-index 60 (3,104 citations and h-index 24 since 2021), as of October 12, 2026. It also counts theses, books and web pages, so it runs higher.

By year

Papers, and the citations to them

Publications, left axisCitations to that year’s papers, right axis2026 still in progress

Career

As their ORCID record read on October 4, 2026

Positions

Associate Professor and Head of Centre, Forest and Horticultural Crops Research CentreUniversity of Ghanasince 2018
Scientist/Country Coordinator, Natural Resource Management DepartmentInternational Institute of Tropical Agriculturesince 2014
Associate Professor, Forest and Horticultural Crops Research CentreUniversity of Ghana1999–2013
Research Associate, Plant Health ManagementInternational Institute of Tropical Agriculture1994–1999

Education

PhD (Production Ecology and Resource Conservation)

Publications

112 in all

Farmers’ agronomic and social evaluation of productivity, yield and N2-fixation in different cowpea varieties and their subsequent residual N effects on a succeeding maize crop
2007Nutrient Cycling in AgroecosystemsJournalOpen accessFirst author83 citations10.1007/s10705-007-9133-3
Exploring diversity among farmers for orienting inter-disciplinary action research on cropping system management in Wenchi, Ghana: the significance of time horizons

Download CV:PDFWord

Citations received each year

PeerfordGoogle Scholar

To all their work, old papers included. Google Scholar also counts citations from theses, books and web pages, so its line runs higher.

What they work on

From the classification of each paper

Subfields

Plant Science3229%
Agronomy and Crop Science2522%
General Agricultural and Biological Sciences1614%
Soil Science1211%
Ecology, Evolution, Behavior and Systematics1110%
Ecology87%
Food Science33%
Economics and Econometrics22%
Horticulture22%
Strategy and Management22%

Life Sciences
Physical Sciences
Social Sciences

Topics most written on

Agronomic Practices and Intercropping Systems21
Agricultural Innovations and Practices15
Legume Nitrogen Fixing Symbiosis14
Agricultural pest management studies9
Agriculture and Rural Development Research8
Oil Palm Production and Sustainability7
Banana Cultivation and Research5
Crop Yield and Soil Fertility5
Agricultural Science and Fertilization4
Agriculture, Land Use, Rural Development4
Cassava research and cyanide3
Climate change impacts on agriculture3

Who they write with

Their most frequent co-authors, and the papers those co-authors share

Where their co-authors are

68% of their 56 papers with recorded affiliations have a co-author abroad

papers co-written34567811Home

Most frequent partner countries

Netherlands28
Kenya18
Nigeria11
Uganda8
Tanzania8
Burundi7
Zimbabwe6
United States5

Papers with at least one author in that country.

Institutions written with most

Wageningen University & ResearchNL26 papers
Council for Scientific and Industrial ResearchGH16 papers
International Institute of Tropical AgricultureKE9 papers
International Institute of Tropical AgricultureTZ8 papers
Kwame Nkrumah University of Science and TechnologyGH8 papers
International Institute of Tropical AgricultureBI8 papers
International Institute of Tropical AgricultureNG8 papers
International Institute of Tropical AgricultureNG7 papers
University of ZimbabweZW6 papers
International Institute of Tropical AgricultureUG6 papers

Where they publish

Field Crops Research4
African Journal of Food Agriculture Nutrition and Development3
Burleigh Dodds Science Publishing3
Cahiers Agricultures3
Cropping Systems, Land Tenure and Social Diversity in Wenchi, Ghana: Implications for Soil Fertility Management3
Experimental Agriculture3

Development goals addressed

From each paper’s title and abstract

2Zero hunger21
15Life on land6
13Climate action3
9Industry, innovation and infrastructure2
12Responsible consumption and production2
17Partnerships for the goals2
5Gender equality1
8

Most cited

Can sub-Saharan Africa feed itself?
Proceedings of the National Academy of Sciences
2016898 citationsWorld top 10%Open access · Bronze
Communicating complexity: Integrated assessment of trade-offs concerning soil fertility management within African farming systems to support innovation and development
Agricultural Systems
2010516 citationsWorld top 10%Open access · Green
Maize-grain legume intercropping for enhanced resource use efficiency and crop productivity in the Guinea savanna of northern Ghana

, Plant Sciences Department

Wageningen University and Research Centre

MPhil (Crop Science), Department of Crop ScienceUniversity of Ghana1992–1996

BSc Agriculture (Crops Science Option), Crop ScienceKwame Nkrumah University of Science and Technology1987–1991

2007International Journal of Agricultural SustainabilityJournalOpen accessFirst author33 citations10.1080/14735903.2007.9684821

crop: farmers' agronomic and social

2006Cropping Systems, Land Tenure and Social Diversity in Wenchi, Ghana: Implications for Soil Fertility ManagementJournalFirst author0 citations

Adjei-Nsiah, S., Kuyper, TW, Abekoe, MK and Giller, KE 2006. Cassava improves soil fertility? Soil fertility management practices among smallholder farmers in the forest …

2006Cropping Systems, Land Tenure and Social Diversity in Wenchi, Ghana: Implications for Soil Fertility ManagementJournalFirst author0 citations

Productivity, yield and N2-fixation in cowpea varieties and their subsequent residual N effects on a succeeding maize crop: farmers' agronomy and social indicators

2006Cropping systems, land tenure and social diversity in Wenchi, Ghana implications for soil fertility managementJournalFirst author5 citations

Tenure security and soil fertility management: Case studies in Ghana and Benin

2006Colloque international “Les frontières de la question foncière-At the frontier of land issues”, Montpellier. PO BoxJournalFirst author13 citations

Yield Potential Of Four Plantain Cultivars Under Optimised Growing Conditions In Ghana

2005Ghana Journal of HorticultureJournalFirst author0 citations

International Journal of Agricultural Sustainability3

NJAS - Wageningen Journal of Life Sciences3

How it can be read

88% free to read, of the 56 recorded

Diamond 4 · 4%Free to read and to publish
Gold 12 · 11%In an open-access journal
Hybrid 21 · 19%Open in a subscription journal
Bronze 4 · 4%Free to read, no open licence
Green 8 · 7%A copy in a repository
Closed 7 · 6%Behind a paywall
Unknown 56 · 50%Not recorded by the source

Who funds it

38 of 112 papers name a funder

Bill and Melinda Gates Foundation21
Wageningen University and Research16
University of Ghana5
Consortium of International Agricultural Research Centers4
European Commission4
Kwame Nkrumah University of Science and Technology4
International Development Research Centre3
Economic and Social Research Council2

Decent work and economic growth

Field Crops Research

2017218 citationsWorld top 10%Open access · Hybrid