T. Defoer

468 total citations
21 papers, 309 citations indexed

About

T. Defoer is a scholar working on Plant Science, Ecology, Evolution, Behavior and Systematics and General Agricultural and Biological Sciences. According to data from OpenAlex, T. Defoer has authored 21 papers receiving a total of 309 indexed citations (citations by other indexed papers that have themselves been cited), including 7 papers in Plant Science, 6 papers in Ecology, Evolution, Behavior and Systematics and 6 papers in General Agricultural and Biological Sciences. Recurrent topics in T. Defoer's work include Agriculture and Rural Development Research (5 papers), Agricultural Innovations and Practices (5 papers) and Agricultural Practices and Plant Genetics (3 papers). T. Defoer is often cited by papers focused on Agriculture and Rural Development Research (5 papers), Agricultural Innovations and Practices (5 papers) and Agricultural Practices and Plant Genetics (3 papers). T. Defoer collaborates with scholars based in Netherlands, Mali and Mexico. T. Defoer's co-authors include A. Budelman, Hugo De Groote, Dorothea Hilhorst, M.C.S. Wopereis, C. Toulmin, Olaf Erenstein, Piet van Asten, Frédéric Lançon, Monty P. Jones and E.M.A. Smaling and has published in prestigious journals such as SHILAP Revista de lepidopterología, Agriculture Ecosystems & Environment and Agricultural Systems.

In The Last Decade

T. Defoer

20 papers receiving 235 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
T. Defoer Netherlands	11	121	120	95	79	56	21	309
Coen Reijntjes	4	175 1.4×	117 1.0×	56 0.6×	73 0.9×	45 0.8×	5	376
Mathias Fosu Ghana	9	80 0.7×	112 0.9×	109 1.1×	67 0.8×	85 1.5×	24	311
Larry Harrington Mexico	11	138 1.1×	160 1.3×	95 1.0×	108 1.4×	61 1.1×	30	387
Adrian Bolliger Netherlands	3	89 0.7×	58 0.5×	130 1.4×	60 0.8×	59 1.1×	3	248
Guillaume Chirat France	3	142 1.2×	91 0.8×	120 1.3×	158 2.0×	80 1.4×	4	326
Frederick Kirschenmann United States	6	118 1.0×	101 0.8×	42 0.4×	41 0.5×	45 0.8×	19	348
José Humberto Valadares Xavier Brazil	5	80 0.7×	98 0.8×	137 1.4×	60 0.8×	111 2.0×	19	304
F.H. D'Emden Australia	4	164 1.4×	152 1.3×	83 0.9×	47 0.6×	98 1.8×	7	353
F. Alliaume Uruguay	7	126 1.0×	94 0.8×	140 1.5×	68 0.9×	46 0.8×	16	385
Nadia El-Hage Scialabba Switzerland	3	94 0.8×	156 1.3×	69 0.7×	46 0.6×	44 0.8×	5	374

Countries citing papers authored by T. Defoer

Since Specialization

Citations

This map shows the geographic impact of T. Defoer's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by T. Defoer with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites T. Defoer more than expected).

Fields of papers citing papers by T. Defoer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by T. Defoer. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by T. Defoer. The network helps show where T. Defoer may publish in the future.

Co-authorship network of co-authors of T. Defoer

This figure shows the co-authorship network connecting the top 25 collaborators of T. Defoer. A scholar is included among the top collaborators of T. Defoer based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with T. Defoer. T. Defoer is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Defoer, T., et al.. (2004). Challenges and technical opportunities for rice-based production systems for food security and poverty alleviation in sub-Saharan Africa. Agritrop (Cirad). 16 indexed citations

Defoer, T., et al.. (2004). Rice-based production system for food security and poverty alleviation in sub-Saharan Africa. Agritrop (Cirad). 15 indexed citations

Asten, Piet van, et al.. (2004). Using farmer knowledge to combat low productive spots in rice fields of a Sahelian irrigation scheme. Land Degradation and Development. 15(4). 383–396. 19 indexed citations

Defoer, T.. (2002). Learning about methodology development for integrated soil fertility management. Agricultural Systems. 73(1). 57–81. 40 indexed citations

Stoop, W.A., et al.. (2000). Twenty years of systems research in southern Mali: the Sikasso FSR experience.. 184–191. 2 indexed citations

Defoer, T., et al.. (2000). Building common knowledge: participatory learning and action research. 26 indexed citations

Defoer, T., et al.. (2000). Facilitating learning processes in agricultural extension: lessons from western Kenya.. OpenGrey (Institut de l'Information Scientifique et Technique). 1 indexed citations

Hilhorst, Dorothea, F.N. Muchena, T. Defoer, et al.. (2000). Managing soil fertility in Africa: diverse settings and changing practice. Socio-Environmental Systems Modeling. 1–27. 14 indexed citations

Budelman, A. & T. Defoer. (2000). Not by nutrients alone: a call to broaden the soil fertility initiative. Natural Resources Forum. 24(3). 173–184. 4 indexed citations

10.

Defoer, T. & A. Budelman. (2000). Managing soil fertility in the tropics: a resource guide for participatory learning and action research.. 36 indexed citations

11.

Defoer, T., et al.. (1998). Participatory action research and quantitative analysis for nutrient management in southern Mali: a fruitful marriage?. Agriculture Ecosystems & Environment. 71(1-3). 215–228. 59 indexed citations

12.

Defoer, T., et al.. (1998). Integrating farmers' knowledge, attitude and practice in the development of sustainable Striga control interventions in southern Mali. Netherlands Journal of Agricultural Science. 46(1). 65–75. 13 indexed citations

13.

Defoer, T., et al.. (1997). Perception paysanne de l'ampleur du Striga et de sa répartition sur le terroir villageois. Agritrop (Cirad). 1 indexed citations

14.

Defoer, T., et al.. (1997). Gender and variety selection: Farmers' assessment of local maize varieties in Southern Mali. African Crop Science Journal. 5(1). 29 indexed citations

15.

Defoer, T., et al.. (1996). Towards More Sustainable Soil Fertility Management. 7 indexed citations

16.

Defoer, T., et al.. (1996). How farmers classify and manage their land: implications for research and development activities.. OpenGrey (Institut de l'Information Scientifique et Technique). 115–124. 7 indexed citations

17.

Defoer, T., et al.. (1994). The contribution of rapid rural appraisals in the planning of on-farm research and extension activities. Agricultural Systems. 44(2). 201–216. 1 indexed citations

18.

Defoer, T., et al.. (1993). Onions in the farming systems of the Swat Valley, Northern Pakistan : Implications for research and extension. SHILAP Revista de lepidopterología. 1 indexed citations

19.

Arif, Mohammad, et al.. (1993). Etiological studies of viral diseases of tomato in Malakand Agency of North West Frontier Province of Pakistan. Sarhad Journal of Agriculture. 9(1). 27–35. 1 indexed citations

20.

Arif, Mohammad, et al.. (1993). Epidemiological studies of tomato viruses in Malakand Agency of North West Frontier Province of Pakistan.. Sarhad Journal of Agriculture. 9(1). 37–43. 3 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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