This map shows the geographic impact of I. Watanabe'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 I. Watanabe with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites I. Watanabe more than expected).
This network shows the impact of papers produced by I. Watanabe. 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 I. Watanabe. The network helps show where I. Watanabe may publish in the future.
Co-authorship network of co-authors of I. Watanabe
This figure shows the co-authorship network connecting the top 25 collaborators of I. Watanabe.
A scholar is included among the top collaborators of I. Watanabe 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 I. Watanabe. I. Watanabe is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Takeda, Kiyoshi, et al.. (1998). Enumeration and characteristics of methanotrophs in paddy soils and rice roots. 69(6). 570–575.7 indexed citations
6.
Watanabe, I., et al.. (1988). The contribution of Azolla to weed control in rice crops.. Zeitschrift für Pflanzenkrankheiten und Pflanzenschutz. 349–355.1 indexed citations
Ventura, Wilbur, et al.. (1987). Azolla and Sesbania as biofertilizers for lowland rice.. Crop protection newsletter. 12(2). 61–69.12 indexed citations
9.
Reddy, P. M., Pierre-Armand Roger, Wilbur Ventura, & I. Watanabe. (1986). Blue-green algal treatment and inoculation had no significant effect on rice yield in an acidic wetland soil. 69. 629–632.2 indexed citations
10.
Watanabe, I.. (1986). ANALYTICAL EXPRESSION OF HYDRODYNAMIC IMPACT PRESSURE BY MATCHED ASYMPTOTIC EXPANSION TECHNIQUE. 71.16 indexed citations
11.
Wood, David M., et al.. (1985). A 14-day azolla adaptability test on farmer's fields.. Crop protection newsletter. 10(3). 129–133.1 indexed citations
12.
Ventura, Wilbur & I. Watanabe. (1984). Dynamics of nitrogen availability in lowland rice soils: the role of soil below plow layer and effect of moisture regimes.. Crop protection newsletter. 9(2). 135–142.12 indexed citations
13.
Roger, Pierre-Armand, et al.. (1984). Effect of urea on the N2-fixing algal flora in lowland rice at ripening stage. 9(2). 28.4 indexed citations
14.
Aziz, Tariq, et al.. (1983). Effect of Rice Straw Application on the Activity of Algae in Rice Field. Journal of the Indian Society of Soil Science. 31(1). 146–147.2 indexed citations
15.
Ventura, Wilbur & I. Watanabe. (1982). 15N dilution technique of assessing nitrogen fixation in association with rice.. Crop protection newsletter. 7(1). 44–50.2 indexed citations
16.
Roger, P. A., Agnes C. Tirol, Ian Grant, & I. Watanabe. (1982). Effect of surface application of straw on phototropic nitrogen fixation. 7(3). 16–17.5 indexed citations
Ottow, J. C. G., G. Benckiser, & I. Watanabe. (1981). Iron Toxicity of Rice as A Multiple Nutritional Soil Stress. Tropical agriculture research series : proceedings of a symposium on tropical agriculture researches. 15. 167–179.6 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.