This map shows the geographic impact of Sadao Shoji'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 Sadao Shoji with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Sadao Shoji more than expected).
This network shows the impact of papers produced by Sadao Shoji. 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 Sadao Shoji. The network helps show where Sadao Shoji may publish in the future.
Co-authorship network of co-authors of Sadao Shoji
This figure shows the co-authorship network connecting the top 25 collaborators of Sadao Shoji.
A scholar is included among the top collaborators of Sadao Shoji 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 Sadao Shoji. Sadao Shoji is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
All Works
20 of 20 papers shown
1.
Saigusa, Masahiko, et al.. (1997). Effects of Flooding Depth and Y-Shaped Seeding Furrow on the Growth of Rice Seedlings in No-Tillage Direct Seeding without Covering Soil. Nihon Dojo Hiryogaku zasshi/Nippon dojō hiryōgaku zasshi. 68(5). 559–563.1 indexed citations
2.
Nanzyo, Masami, Tomoki Takahashi, & Sadao Shoji. (1996). Rapid Method to Determine Available Phosphorus Content of Paddy Soils under Reducing Conditions Using Ascorbic Acid. Soil Science & Plant Nutrition. 42(2). 436.7 indexed citations
Nanzyo, Masami, et al.. (1994). Increase in High-Affinity Sites of Andisols for Calcium Ion with Phosphate Sorption. Tohoku Journal of Agricultural Research. 45(1). 11–20.
5.
Saigusa, Masahiko, et al.. (1991). Clay Mineralogy of Two Andisols Showing a Hydrosequence and Its Relationships to Their Physical and Chemical Properties. 35(1). 21–33.7 indexed citations
6.
Kawai, S., et al.. (1990). Degradation of non-phenolic β-O-4 lignin substructure model compounds by lignin peroxidase of Coriolus versicolor.. Journal of the Japan Wood Research Society. 36(2). 126–132.4 indexed citations
Shoji, Sadao, et al.. (1987). Propertres of Humus of Andosols from New Zealand, Chili and Ecuador. Nihon Dojo Hiryogaku zasshi/Nippon dojō hiryōgaku zasshi. 58(4). 473–479.7 indexed citations
10.
Shoji, Sadao, et al.. (1986). Relationship between Nitrogen Absorption and Growth and Yield of Rice Plants. Japan Agricultural Research Quarterly JARQ. 20(2). 135–145.36 indexed citations
11.
Shoji, Sadao, et al.. (1986). Fate of Nitrogen in Paddy Fields and Nitrogen Absorption by Rice Plants. Japan Agricultural Research Quarterly JARQ. 20(2). 127–134.13 indexed citations
Yamada, Ichiro, et al.. (1980). Parent materials of the important ando soils of Tohoku District (1) Rock types and primary mineral composition.. Nihon Dojo Hiryogaku zasshi/Nippon dojō hiryōgaku zasshi. 51(3). 193–202.1 indexed citations
Yamada, Ichiro & Sadao Shoji. (1976). Soils Formed from the Andesitic and Basaltic Volcanic Ashes II. Soil Properties and Fertility Problems. Tohoku Journal of Agricultural Research. 26(3). 102–116.2 indexed citations
17.
Yamada, Ichiro & Sadao Shoji. (1975). Relationships between Particle Size and Mineral Composition of Volcanic Ashes.. Tohoku Journal of Agricultural Research. 26(1). 7–10.11 indexed citations
18.
Shoji, Sadao, et al.. (1975). Absorption of Fertilizer and Soil Nitrogen by Rice Plants under the Various Cultural Conditions of Different Paddy Fields. I. Relationships between the Rate of Basal Nitrogen and Nitrogen Absorption by Rice Plants.. Tohoku Journal of Agricultural Research. 25(3). 113–124.5 indexed citations
19.
Shoji, Sadao, et al.. (1968). Clay Minerals of Soils Derived from Recent Volcanic Falls (Part 4) : Determination of Expansible 2 : 1 Minerals and Their Pedochemical Formation. Nihon Dojo Hiryogaku zasshi/Nippon dojō hiryōgaku zasshi. 39(3). 154–160.1 indexed citations
20.
Shoji, Sadao, et al.. (1966). CLAY MINERAL PROPERTIES OF VOLCANIC ASH SOILS IN THE NORTHEASTERN PART OF JAPAN. Tohoku Journal of Agricultural Research. 17(1). 17–36.10 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.