Philip Westra

5.3k total citations · 1 hit paper
139 papers, 4.1k citations indexed

About

Philip Westra is a scholar working on Plant Science, Pollution and Agronomy and Crop Science. According to data from OpenAlex, Philip Westra has authored 139 papers receiving a total of 4.1k indexed citations (citations by other indexed papers that have themselves been cited), including 128 papers in Plant Science, 44 papers in Pollution and 40 papers in Agronomy and Crop Science. Recurrent topics in Philip Westra's work include Weed Control and Herbicide Applications (104 papers), Pesticide and Herbicide Environmental Studies (44 papers) and Plant tissue culture and regeneration (34 papers). Philip Westra is often cited by papers focused on Weed Control and Herbicide Applications (104 papers), Pesticide and Herbicide Environmental Studies (44 papers) and Plant tissue culture and regeneration (34 papers). Philip Westra collaborates with scholars based in United States, Australia and Germany. Philip Westra's co-authors include Scott J. Nissen, Todd A. Gaines, Christopher Preston, Dale L. Shaner, Sarah Ward, Jan E. Leach, Bekir Bükün, Hudson Kagueyama Takano, Roland Beffa and Darci A. Giacomini and has published in prestigious journals such as Proceedings of the National Academy of Sciences, SHILAP Revista de lepidopterología and PLoS ONE.

In The Last Decade

Philip Westra

138 papers receiving 3.9k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Gene amplification confers glyphosate resistance in Amaranthus palmeri

2009 511 citations Todd A. Gaines, Dale L. Shaner et al. Proceedings of the National Academy of Sciences profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Philip Westra United States	36	3.7k	1.4k	1.3k	752	328	139	4.1k
Ian Heap United States	13	4.0k 1.1×	1.7k 1.3×	1.1k 0.9×	735 1.0×	361 1.1×	18	4.3k
Theodore M. Webster United States	29	4.2k 1.1×	1.4k 1.0×	908 0.7×	1.0k 1.4×	327 1.0×	129	4.6k
Micheal D. K. Owen United States	33	3.1k 0.8×	1.1k 0.8×	873 0.7×	600 0.8×	279 0.9×	135	3.4k
Carol Mallory‐Smith United States	34	3.6k 1.0×	1.1k 0.8×	1.5k 1.1×	618 0.8×	514 1.6×	155	4.0k
Kassim Al‐Khatib United States	33	3.4k 0.9×	1.1k 0.8×	681 0.5×	617 0.8×	297 0.9×	167	3.6k
John W. Wilcut United States	37	4.6k 1.2×	1.8k 1.3×	764 0.6×	1.1k 1.5×	197 0.6×	212	4.8k
Nilda R. Burgos United States	37	5.0k 1.3×	1.7k 1.3×	1.2k 0.9×	814 1.1×	330 1.0×	163	5.4k
Stephen C. Weller United States	32	2.7k 0.7×	908 0.7×	933 0.7×	425 0.6×	249 0.8×	105	3.2k
Alan C. York United States	30	3.4k 0.9×	1.5k 1.1×	754 0.6×	681 0.9×	163 0.5×	160	3.6k
Loyd M. Wax United States	39	3.8k 1.0×	1.3k 1.0×	482 0.4×	824 1.1×	324 1.0×	124	4.2k

Countries citing papers authored by Philip Westra

Since Specialization

Citations

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

Fields of papers citing papers by Philip Westra

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Philip Westra

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

All Works

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20 of 20 papers shown

Chen, Jinyi, Christopher Saski, Maor Matzrafi, et al.. (2025). FHY3/FAR1 transposable elements generate adaptive genetic variation in the Bassia scoparia genome. Pest Management Science. 81(8). 4393–4402. 2 indexed citations

Patterson, Eric L., Luan Cutti, Sarah Morran, et al.. (2025). Assembly and Annotation of the Tetraploid Salsola tragus (Russian Thistle) Genome. Genome Biology and Evolution. 17(2). 1 indexed citations

Soltani, Nader, Scott J. Nissen, Todd A. Gaines, et al.. (2022). Mechanisms of glyphosate resistance in common ragweed (Ambrosia artemisiifolia): patterns of absorption, translocation, and metabolism. Weed Science. 70(2). 151–159. 3 indexed citations

Wu, Chenxi, et al.. (2020). Investigating the presence of compensatory evolution in dicamba resistant IAA16 mutated kochia (Bassia scoparia)^†. Pest Management Science. 77(4). 1775–1785. 5 indexed citations

Wu, Chenxi, et al.. (2020). A dicamba resistance‐endowing IAA16 mutation leads to significant vegetative growth defects and impaired competitiveness in kochia (Bassia scoparia)^†. Pest Management Science. 77(2). 795–804. 11 indexed citations

Takano, Hudson Kagueyama, Roland Beffa, Christopher Preston, Philip Westra, & Franck E. Dayan. (2020). Glufosinate enhances the activity of protoporphyrinogen oxidase inhibitors. Weed Science. 68(4). 324–332. 39 indexed citations

Takano, Hudson Kagueyama, Roland Beffa, Christopher Preston, Philip Westra, & Franck E. Dayan. (2020). A novel insight into the mode of action of glufosinate: how reactive oxygen species are formed. Photosynthesis Research. 144(3). 361–372. 42 indexed citations

Patterson, Eric L., Christopher Saski, Daniel B. Sloan, et al.. (2019). The Draft Genome of Kochia scoparia and the Mechanism of Glyphosate Resistance via Transposon-Mediated EPSPS Tandem Gene Duplication. Genome Biology and Evolution. 11(10). 2927–2940. 33 indexed citations

Ostlie, Michael, et al.. (2019). Imazamox Absorption, Translocation, and Metabolism by Cereal Rye (Secale cereale) at Low Temperatures. Weed Science. 67(2). 189–194. 1 indexed citations

10.

Takano, Hudson Kagueyama, Roland Beffa, Christopher Preston, Philip Westra, & Franck E. Dayan. (2019). Reactive oxygen species trigger the fast action of glufosinate. Planta. 249(6). 1837–1849. 88 indexed citations

11.

LeClere, Sherry, Chenxi Wu, Philip Westra, & R. Douglas Sammons. (2018). Cross-resistance to dicamba, 2,4-D, and fluroxypyr in Kochia scoparia is endowed by a mutation in an AUX/IAA gene. Proceedings of the National Academy of Sciences. 115(13). E2911–E2920. 79 indexed citations

12.

Ravet, Karl, Eric L. Patterson, Kateřina Hamouzová, et al.. (2018). The power and potential of genomics in weed biology and management. Pest Management Science. 74(10). 2216–2225. 53 indexed citations

13.

Busi, Roberto, Danica E. Goggin, Ian Heap, et al.. (2017). Weed resistance to synthetic auxin herbicides. Pest Management Science. 74(10). 2265–2276. 145 indexed citations

14.

Byrne, Patrick F., Frank B. Peairs, Scott J. Nissen, et al.. (2009). Perceived consequences of herbicide-tolerant and insect-resistant crops on integrated pest management strategies in the western United States: Results of an online survey. MOspace Institutional Repository (University of Missouri). 12. 412–421. 5 indexed citations

15.

Preston, Christopher, Dale L. Shaner, Philip Westra, et al.. (2006). Can a shikimate assay be used to determine the genotype of glyphosate resistant plants for population genetic studies. Adelaide Research & Scholarship (AR&S) (University of Adelaide). 511–514. 2 indexed citations

16.

Shaner, Dale L., et al.. (2006). Comparison of efficacy, absorption and translocation of three glyphosate formulations on velvetleaf ( Abutilon theophrasti ). Pest Management Science. 62(12). 1177–1181. 5 indexed citations

17.

Christoffoleti, Pedro Jacob, et al.. (1997). GROWTH ANALYSIS OF SULFONYLUREA-RESISTANT AND -SUSCEPTIBLE KOCHIA (KOCHIA SCOPARIA). Weed Science. 45(5). 691–695. 64 indexed citations

18.

Schweizer, Edward E. & Philip Westra. (1991). Potential for Weeds to Develop Resistance to Sugar Beet Herbicides in North America. Journal of Sugarbeet Research. 28(1&2). 1–22. 2 indexed citations

19.

Westra, Philip, et al.. (1990). Morphological and reproductive characteristics of fifteen wild proso millet (Panicum miliaceum) accessions from the United States and Canada.. 405–407. 4 indexed citations

20.

Westra, Philip, et al.. (1989). Jointed goatgrass control with ethyl-metribuzin.. 398–399. 1 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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