Keijiro Otsuka

438 total papers · 10.1k total citations
190 papers, 5.3k citations indexed

About

Keijiro Otsuka is a scholar working on Soil Science, Economics and Econometrics and General Agricultural and Biological Sciences. According to data from OpenAlex, Keijiro Otsuka has authored 190 papers receiving a total of 5.3k indexed citations (citations by other indexed papers that have themselves been cited), including 69 papers in Soil Science, 67 papers in Economics and Econometrics and 65 papers in General Agricultural and Biological Sciences. Recurrent topics in Keijiro Otsuka’s work include Land Rights and Reforms (47 papers), Agricultural Innovations and Practices (42 papers) and Agriculture, Land Use, Rural Development (31 papers). Keijiro Otsuka is often cited by papers focused on Land Rights and Reforms (47 papers), Agricultural Innovations and Practices (42 papers) and Agriculture, Land Use, Rural Development (31 papers). Keijiro Otsuka collaborates with scholars based in Japan, United States and Philippines. Keijiro Otsuka's co-authors include Tetsushi Sonobe, Frank Place, Yūjirō Hayami, Yoko Kijima, Agnes Quisumbing, Jonna P. Estudillo, Rie Muraoka, Kazushi Takahashi, Donald F. Larson and D. Sserunkuuma and has published in prestigious journals such as Journal of Political Economy, World Development and Journal of Economic Literature.

In The Last Decade

Co-authorship network of co-authors of Keijiro Otsuka

This figure shows the co-authorship network connecting the top 25 collaborators of Keijiro Otsuka. A scholar is included among the top collaborators of Keijiro Otsuka 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 Keijiro Otsuka. Keijiro Otsuka is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

Keijiro Otsuka

183 papers receiving 4.6k citations

Fields of papers citing papers by Keijiro Otsuka

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Keijiro Otsuka. 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 Keijiro Otsuka. The network helps show where Keijiro Otsuka may publish in the future.

Countries citing papers authored by Keijiro Otsuka

Since Specialization
Citations

This map shows the geographic impact of Keijiro Otsuka'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 Keijiro Otsuka with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Keijiro Otsuka more than expected).

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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2026