This map shows the geographic impact of J. M. Schalk'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 J. M. Schalk with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J. M. Schalk more than expected).
This network shows the impact of papers produced by J. M. Schalk. 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 J. M. Schalk. The network helps show where J. M. Schalk may publish in the future.
Co-authorship network of co-authors of J. M. Schalk
This figure shows the co-authorship network connecting the top 25 collaborators of J. M. Schalk.
A scholar is included among the top collaborators of J. M. Schalk 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 J. M. Schalk. J. M. Schalk is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Schalk, J. M. & Joseph K. Peterson. (1990). A meridic diet for banded cucumber beetle larvae (Diabrotica balteata Leconte).. 7(4). 333–336.6 indexed citations
6.
Jones, Alfred, P. D. Dukes, J. M. Schalk, Matthew G. Hamilton, & R. A. Baumgardner. (1987). ‘Southern Delite’ Sweet Potato. HortScience. 22(2). 329–330.5 indexed citations
Schalk, J. M., Alfred Jones, & P. D. Dukes. (1986). Factors associated with resistance in recently developed sweet potato cultivars and germplasm to the banded cucumber beetle, Diabrotica balteata LeConte.. 3(4). 329–334.13 indexed citations
Jones, Alfred, P. D. Dukes, J. M. Schalk, et al.. (1985). ‘Regal’ Sweet Potato. HortScience. 20(4). 781–782.14 indexed citations
13.
Schalk, J. M., et al.. (1980). Toxicity of dietary rose bengal to larvae of the cabbage looper, corn earworm and pickleworm.. 15(1). 66–68.2 indexed citations
Dukes, P. D., Andrew F. Jones, & J. M. Schalk. (1979). Evaluating sweet potato for reaction to sclerotial blight caused by Sclerotium rolfsii. HortScience. 14(2). 123.1 indexed citations
16.
Sinden, S. L., J. M. Schalk, & Adair Stoner. (1978). Effects of daylength and maturity of tomato plants on tomatine content and resistance to the Colorado potato beetle [Leptinotarsa decemlineata]. Journal of the American Society for Horticultural Science.19 indexed citations
Manglitz, G. R. & J. M. Schalk. (1970). Occurrence and hosts of Aphelinus semiflavus Howard in Nebraska (Hymenoptera: Eulophidae).. Journal of the Kansas Entomological Society. 43(3). 309–314.3 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.