P. E. Parker

2.3k citations

35 papers · 1.8k · 1 hit paper · h-index 17

Impact in

Plant Science top 2%
- Smart Agriculture and AI
- Plant Pathogenic Bacteria Studies
- Banana Cultivation and Research
- Leaf Properties and Growth Measurement
- Plant Pathogens and Resistance
Cell Biology top 5%
- Plant Pathogens and Fungal Diseases

Papers in

Cell Biology 15
- Plant Pathogens and Fungal Diseases 15
Plant Science 26
- Plant Pathogenic Bacteria Studies 15
- Banana Cultivation and Research 5
- Phytoplasmas and Hemiptera pathogens 5
- Plant pathogens and resistance mechanisms 4
- Insect Pest Control Strategies 2

Co-authors: Clive Howard Bock (17 shared papers)T. R. Gottwald (17 shared papers)Gavin H. Poole (1 shared paper)Amanda Z. Cook (10 shared papers)Weizong Xu (1 shared paper)Cliff T. Johnston (1 shared paper)Stephen F. Agnew (1 shared paper)T. J. Poprawski (2 shared papers)
Journals: Plant Disease (7 papers)Phytopathology (3 papers)European Journal of Plant Pathology (3 papers)Crop Protection (3 papers)Environmental Entomology (2 papers)
Partner nations: United States Australia United Kingdom

In The Last Decade

P. E. Parker

34 papers receiving 1.7k citations

P. E. Parker's Hit Papers

align trajectories log scale

Plant Disease Severity Estimated Visually, by Digital Photography and Image Analysis, and by Hyperspectral Imaging 2010 · 750 citations

What are hit papers?

Paper score: A paper's citations measured against the top-1% bar of its own field and year: the square root of citations ÷ bar, so 1 means right at the bar and 2 means four times its citations. The bar blends the citation counts that enter the top 1% of the paper's subfields in its year (weighted 89.5%), of those subfields over all years (0.5%) and of its year across all fields (10%); a subfield and year with fewer than 400 papers takes its year's bar. Papers from 2026 are not scored yet: in an unfinished year, when a paper appeared matters more than how it is cited.

Hit paper: A paper cited at least 1.5× the top-1% bar of its field and year: a paper score of at least √1.5.

2010 Critical Reviews in Plant Sciences

Peers

Countries citing papers authored by P. E. Parker

Since Specialization

Citations

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

Fields of papers citing papers by P. E. Parker

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by P. E. Parker. 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 P. E. Parker. The network helps show where P. E. Parker may publish in the future.

Co-authors

The 25 scholars most cited alongside P. E. Parker, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with P. E. Parker Line = papers co-authored together P. E. Parker links everyone, so they are left out of the graph.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Showing the 20 most-cited of 35 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Plant Disease Severity Estimated Visually, by Digital Photography and Image Analysis, and by Hyperspectral Imaging Critical Reviews in Plant Sciences ·Clive Howard Bock, Gavin H. Poole, P. E. Parker, T. R. Gottwald Hit paper breakdown →	2010	750
2	Infrared Study of Water Sorption on Na-, Li-, Ca-, and Mg-Exchanged (SWy-1 and SAz-1) Montmorillonite Clays and Clay Minerals ·Weizong Xu, Cliff T. Johnston, P. E. Parker, Stephen F. Agnew	2000	189
3	Visual Rating and the Use of Image Analysis for Assessing Different Symptoms of Citrus Canker on Grapefruit Leaves Plant Disease ·Clive Howard Bock, P. E. Parker, Amanda Z. Cook, T. R. Gottwald	2008	143
4	Effect of Simulated Wind-Driven Rain on Duration and Distance of Dispersal of Xanthomonas axonopodis pv. citri from Canker-Infected Citrus Trees Plant Disease ·Clive Howard Bock, P. E. Parker, T. R. Gottwald	2005	70
5	The epidemiological significance of post-packinghouse survival of Xanthomonas citri subsp. citri for dissemination of Asiatic citrus canker via infected fruit Crop Protection ·Timothy R. Gottwald, J. H. Graham, Clive Howard Bock, Gordon W Bonn, Edwin L. Civerolo, Mike Irey, Rui Pereira Leite, Greg McCollum	2009	61
6	Automated Image Analysis of the Severity of Foliar Citrus Canker Symptoms Plant Disease ·Clive Howard Bock, Amanda Z. Cook, P. E. Parker, T. R. Gottwald	2009	50
7	Laboratory and Field Evaluation of Hyphomycete Insect Pathogenic Fungi for Control of Brown Citrus Aphid (Homoptera: Aphididae) Environmental Entomology ·T. J. Poprawski, P. E. Parker, James H. Tsai	1999	48
8	The Horsfall-Barratt scale and severity estimates of citrus canker European Journal of Plant Pathology ·Clive Howard Bock, T. R. Gottwald, P. E. Parker, Amanda Z. Cook, Francis J. Ferrandino, Stephen Parnell, Frank van den Bosch	2009	47
9	Some Consequences of Using the Horsfall-Barratt Scale for Hypothesis Testing Phytopathology ·Clive Howard Bock, T. R. Gottwald, P. E. Parker, Francis J. Ferrandino, Sue J. Welham, Frank van den Bosch, Stephen Parnell	2010	46
10	Wind Speed Effects on the Quantity of Xanthomonas citri subsp. citri Dispersed Downwind from Canopies of Grapefruit Trees Infected with Citrus Canker Plant Disease ·Clive Howard Bock, J. H. Graham, T. R. Gottwald, Amanda Z. Cook, P. E. Parker	2010	44
11	Characteristics of the Perception of Different Severity Measures of Citrus Canker and the Relationships Between the Various Symptom Types Plant Disease ·Clive Howard Bock, P. E. Parker, Amanda Z. Cook, T. R. Gottwald	2008	42
12	Influence of Entomopathogenic Fungi on Serangium parcesetosum (Coleoptera: Coccinellidae), an Important Predator of Whiteflies (Homoptera: Aleyrodidae) Environmental Entomology ·T. J. Poprawski, Jesusa C. Legaspi, P. E. Parker	1998	41
13	Comparison of Assessment of Citrus Canker Foliar Symptoms by Experienced and Inexperienced Raters Plant Disease ·Clive Howard Bock, P. E. Parker, Amanda Z. Cook, Tim D. Riley, T. R. Gottwald	2009	40
14	Release and establishment of diffuse and spotted knapweed biocontrol agents by USDA, APHIS, PPQ, in the United States The Pan-Pacific Entomologist ·R. F. Lang, R. D. Richard, P. E. Parker, Lloyd E. Wendel	2000	25
15	Wind speed and wind-associated leaf injury affect severity of citrus canker on Swingle citrumelo European Journal of Plant Pathology ·Clive Howard Bock, James H. Graham, T. R. Gottwald, Amanda Z. Cook, P. E. Parker	2010	24
16	Orchard and nursery dynamics of the effect of interplanting citrus with guava for huanglongbing, vector, and disease management Crop Protection ·T. R. Gottwald, David G. Hall, Alissa B. Kriss, Eduardo Salinas, P. E. Parker, G. A. C. Beattie, Manh Cong Nguyen	2014	20
17	Short‐distance dispersal of splashed bacteria of Xanthomonas citri subsp. citri from canker‐infected grapefruit tree canopies in turbulent wind Plant Pathology ·Clive Howard Bock, Amanda Z. Cook, P. E. Parker, T. R. Gottwald, J. H. Graham	2012	18
18	Characterization and isolation of DNA microsatellite primers in the spiny dogfish (Squalus acanthias) Molecular Ecology Notes ·Linda A. R. McCauley, COURTNEY GOECKER, P. E. Parker, Tom Rudolph, Frederick W. Goetz, Gabriele Gerlach	2004	16
19	The Leeds Risk Index: Field-Test of a Stratified Psychological Treatment Selection Algorithm Psychotherapy and Psychosomatics ·Jaime Delgadillo, Sarah K. Appleby, Sarah Booth, Georgie Burnett, Amy Carey, Laura Edmeade, Stephen Green, Pat Griffin	2020	16
20	Distribution of canker lesions on the surface of diseased grapefruit Plant Pathology ·Clive Howard Bock, T. R. Gottwald, P. E. Parker	2011	12

About P. E. Parker

P. E. Parker is a scholar working on Cell Biology, Plant Science, Insect Science, Ecology, Evolution, Behavior and Systematics and Applied Psychology, having authored 35 papers that have together received 1.8k indexed citations. Recurring topics across this work include Plant Pathogenic Bacteria Studies (15 papers), Plant Pathogens and Fungal Diseases (15 papers), Insect-Plant Interactions and Control (5 papers), Banana Cultivation and Research (5 papers), Phytoplasmas and Hemiptera pathogens (5 papers), Biological Control of Invasive Species (4 papers), Plant pathogens and resistance mechanisms (4 papers) and Insect Pest Control Strategies (2 papers). The work is most often cited by research in Plant Science (1.3k citations), Cell Biology (501 citations), Analytical Chemistry (263 citations), Horticulture (22 citations) and Insect Science (171 citations). P. E. Parker has collaborated with scholars based in United States, Australia and United Kingdom. Frequent co-authors include Clive Howard Bock, T. R. Gottwald, Gavin H. Poole, Amanda Z. Cook, Weizong Xu, Cliff T. Johnston, Stephen F. Agnew, T. J. Poprawski, J. H. Graham and James H. Tsai. Their work appears in journals such as Plant Disease, Phytopathology, European Journal of Plant Pathology, Crop Protection and Environmental Entomology.

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.

Explore authors with similar magnitude of impact

P. E. Parker

Impact in

Papers in i

In The Last Decade

P. E. Parker

P. E. Parker's Hit Papers

Peers

Countries citing papers authored by P. E. Parker

Fields of papers citing papers by P. E. Parker

All Works

About P. E. Parker

Explore authors with similar magnitude of impact

Papers in