Charles M. Geddes

1.2k total citations
51 papers, 433 citations indexed

About

Charles M. Geddes is a scholar working on Plant Science, Pollution and Agronomy and Crop Science. According to data from OpenAlex, Charles M. Geddes has authored 51 papers receiving a total of 433 indexed citations (citations by other indexed papers that have themselves been cited), including 44 papers in Plant Science, 21 papers in Pollution and 8 papers in Agronomy and Crop Science. Recurrent topics in Charles M. Geddes's work include Weed Control and Herbicide Applications (38 papers), Pesticide and Herbicide Environmental Studies (21 papers) and Legume Nitrogen Fixing Symbiosis (12 papers). Charles M. Geddes is often cited by papers focused on Weed Control and Herbicide Applications (38 papers), Pesticide and Herbicide Environmental Studies (21 papers) and Legume Nitrogen Fixing Symbiosis (12 papers). Charles M. Geddes collaborates with scholars based in Canada, United States and Australia. Charles M. Geddes's co-authors include Shaun M. Sharpe, Robert H. Gulden, Brian L. Beres, William E. May, Adam S. Davis, Hugh J. Beckie, Julia Y. Leeson, Joel K. Ransom, Curtis Pozniak and Elham Rahmani and has published in prestigious journals such as Scientific Reports, Frontiers in Plant Science and Environmental Research.

In The Last Decade

Charles M. Geddes

46 papers receiving 423 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Charles M. Geddes Canada 12 348 100 98 53 38 51 433
Alexandros Tataridas Greece 12 406 1.2× 112 1.1× 54 0.6× 67 1.3× 41 1.1× 35 527
Juliet M. Marshall United States 14 519 1.5× 68 0.7× 36 0.4× 53 1.0× 65 1.7× 63 622
Scott W. Shirriff Canada 11 369 1.1× 67 0.7× 165 1.7× 53 1.0× 14 0.4× 20 399
Sаvа Vrbničаnin Serbia 15 580 1.7× 151 1.5× 58 0.6× 45 0.8× 47 1.2× 122 670
Eric P. Prostko United States 14 656 1.9× 198 2.0× 129 1.3× 36 0.7× 24 0.6× 89 757
O. Adewale Osipitan United States 14 511 1.5× 257 2.6× 102 1.0× 31 0.6× 44 1.2× 33 668
Bernard H. Zandstra United States 16 615 1.8× 128 1.3× 83 0.8× 49 0.9× 28 0.7× 45 697
Hüsrev Mennan Türkiye 16 816 2.3× 284 2.8× 97 1.0× 69 1.3× 24 0.6× 77 911
Domagoj Šimić Croatia 16 757 2.2× 204 2.0× 69 0.7× 32 0.6× 22 0.6× 94 878
Joan A. Dusky United States 15 399 1.1× 117 1.2× 76 0.8× 40 0.8× 23 0.6× 45 481

Countries citing papers authored by Charles M. Geddes

Since Specialization
Citations

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

Fields of papers citing papers by Charles M. Geddes

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Charles M. Geddes. 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 Charles M. Geddes. The network helps show where Charles M. Geddes may publish in the future.

Co-authorship network of co-authors of Charles M. Geddes

This figure shows the co-authorship network connecting the top 25 collaborators of Charles M. Geddes. A scholar is included among the top collaborators of Charles M. Geddes 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 Charles M. Geddes. Charles M. Geddes 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.
Geddes, Charles M., et al.. (2025). Protoporphyrinogen oxidase (PPO)-inhibitor resistance in kochia (Bassia scoparia). Weed Science. 73. 1 indexed citations
2.
Geddes, Charles M., et al.. (2025). UAV-based hyperspectral imaging to evaluate plant moisture and desiccant response in lentil (Lens culinaris). Canadian Journal of Plant Science. 105. 1–13. 1 indexed citations
3.
Blackshaw, Robert E., et al.. (2024). Multiple herbicide-resistant kochia (Bassia scoparia) control in glufosinate-resistant canola. Canadian Journal of Plant Science. 104(4). 298–310. 2 indexed citations
4.
Riechers, Dean E., Nader Soltani, Bhagirath Singh Chauhan, et al.. (2024). Herbicide resistance is complex: a global review of cross-resistance in weeds within herbicide groups. Weed Science. 72(5). 465–486. 6 indexed citations
5.
Geddes, Charles M., et al.. (2024). Forging new paths to manage herbicide-resistant weeds. Canadian Journal of Plant Science. 105. 1–5.
6.
Larney, Francis J., Newton Z. Lupwayi, T. Forge, et al.. (2024). Multiple soil health indicators are responsive to summer cover crops on an irrigated organic farm. Canadian Journal of Soil Science. 104(4). 418–433.
7.
Geddes, Charles M., et al.. (2023). Glyphosate-resistant downy brome (Bromus tectorum) control using alternative herbicides applied postemergence. Weed Technology. 37(2). 205–211. 2 indexed citations
8.
Geddes, Charles M., et al.. (2022). Serotiny facilitates kochia (Bassia scoparia) persistence via aerial seedbanks. Canadian Journal of Plant Science. 103(3). 324–328. 2 indexed citations
9.
Geddes, Charles M. & Shaun M. Sharpe. (2022). Crop yield losses due to kochia (Bassia scoparia) interference. Crop Protection. 157. 105981–105981. 19 indexed citations
10.
Soltani, Nader, Charles M. Geddes, Martin Laforest, J. Anita Dille, & Peter H. Sikkema. (2022). Economic impact of glyphosate-resistant weeds on major field crops grown in Ontario. Weed Technology. 36(5). 629–635. 6 indexed citations
11.
Geddes, Charles M., et al.. (2022). First report of glyphosate-resistant downy brome (Bromus tectorum L.) in Canada. Scientific Reports. 12(1). 18893–18893. 6 indexed citations
12.
Geddes, Charles M., et al.. (2022). Increasing frequency of multiple herbicide-resistant kochia (Bassia scoparia) in Alberta. Canadian Journal of Plant Science. 103(2). 233–237. 16 indexed citations
13.
Geddes, Charles M., et al.. (2022). Potential spring canola yield losses due to weeds in Canada and the United States. Weed Technology. 36(6). 884–890. 5 indexed citations
14.
Geddes, Charles M., et al.. (2021). Herbicide diagnostics reveal multiple patterns of synthetic auxin resistance in kochia (Bassia scoparia). Weed Technology. 36(1). 28–37. 11 indexed citations
15.
16.
Geddes, Charles M. & Robert H. Gulden. (2021). Wheat and Cereal Rye Inter-Row Living Mulches Interfere with Early Season Weeds in Soybean. Plants. 10(11). 2276–2276. 4 indexed citations
17.
McCallum, Brent, Charles M. Geddes, Syama Chatterton, et al.. (2021). We stand on guard for thee: A brief history of pest surveillance on the Canadian Prairies. Crop Protection. 149. 105748–105748. 8 indexed citations
18.
Geddes, Charles M., et al.. (2021). Wheat Density Alters but Does Not Repress the Expression of a Fluroxypyr-Resistant Kochia (Bassia scoparia) Phenotype. Agronomy. 11(11). 2160–2160. 4 indexed citations
19.
Geddes, Charles M. & Robert H. Gulden. (2018). Candidate Tools for Integrated Weed Management in Soybean at the Northern Frontier of Production. Weed Science. 66(5). 662–672. 8 indexed citations
20.
Johnson, Eric N., et al.. (2018). Pyroxasulfone Is Effective for Management ofBromusspp. in Winter Wheat in Western Canada. Weed Technology. 32(6). 739–748. 21 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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2026