GR Johnstone

528 total citations
27 papers, 412 citations indexed

About

GR Johnstone is a scholar working on Plant Science, Agronomy and Crop Science and Endocrinology. According to data from OpenAlex, GR Johnstone has authored 27 papers receiving a total of 412 indexed citations (citations by other indexed papers that have themselves been cited), including 26 papers in Plant Science, 12 papers in Agronomy and Crop Science and 8 papers in Endocrinology. Recurrent topics in GR Johnstone's work include Plant Virus Research Studies (23 papers), Agronomic Practices and Intercropping Systems (11 papers) and Plant and Fungal Interactions Research (8 papers). GR Johnstone is often cited by papers focused on Plant Virus Research Studies (23 papers), Agronomic Practices and Intercropping Systems (11 papers) and Plant and Fungal Interactions Research (8 papers). GR Johnstone collaborates with scholars based in Australia and United States. GR Johnstone's co-authors include J. E. Duffus, P. L. Guy, G.D. McLean, Mark Norton, D. C. Munro, Mark W. Schwinghamer, J. D. Fletcher, J. R. Walsh, K. F. M. Reed and James E. Duffus and has published in prestigious journals such as Annals of Applied Biology, European Journal of Plant Pathology and Bulletin of Entomological Research.

In The Last Decade

GR Johnstone

27 papers receiving 338 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
GR Johnstone Australia 14 371 151 106 88 51 27 412
J. E. Duffus Ireland 11 357 1.0× 52 0.3× 100 0.9× 85 1.0× 28 0.5× 21 377
L. J. Latham Australia 13 527 1.4× 63 0.4× 138 1.3× 213 2.4× 26 0.5× 23 535
M. D. Alegbejo Nigeria 13 532 1.4× 73 0.5× 75 0.7× 128 1.5× 17 0.3× 61 561
Á. S. Costa Brazil 9 405 1.1× 31 0.2× 60 0.6× 148 1.7× 15 0.3× 42 444
H. W. Rossel Nigeria 11 446 1.2× 41 0.3× 59 0.6× 100 1.1× 27 0.5× 24 462
P. L. Catherall United Kingdom 11 323 0.9× 122 0.8× 99 0.9× 40 0.5× 28 0.5× 36 354
Geoffrey Okao-Okuja Uganda 14 811 2.2× 67 0.4× 23 0.2× 325 3.7× 23 0.5× 19 854
John A'brook United Kingdom 11 273 0.7× 74 0.5× 28 0.3× 166 1.9× 60 1.2× 16 311
H. S. Bariana Australia 9 621 1.7× 59 0.4× 52 0.5× 51 0.6× 35 0.7× 12 656
Palaiyur Nanjappan Sivalingam India 10 360 1.0× 21 0.1× 65 0.6× 50 0.6× 14 0.3× 37 415

Countries citing papers authored by GR Johnstone

Since Specialization
Citations

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

Fields of papers citing papers by GR Johnstone

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of GR Johnstone

This figure shows the co-authorship network connecting the top 25 collaborators of GR Johnstone. A scholar is included among the top collaborators of GR Johnstone 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 GR Johnstone. GR Johnstone 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.
Reed, K. F. M., Antonio Leonforte, P. J. Cunningham, et al.. (2000). Incidence of ryegrass endophyte ( Neotyphodium lolii ) and diversity of associated alkaloid concentrations among naturalised populations of perennial ryegrass ( Lolium perenne L.). Australian Journal of Agricultural Research. 51(5). 569–578. 27 indexed citations
2.
Schwinghamer, Mark W., et al.. (1999). . Australasian Plant Pathology. 28(3). 260–260. 17 indexed citations
3.
Makkouk, K. M., et al.. (1997). Identification and some properties of soybean dwarf luteovirus affecting lentil in Syria.. Phytopathologia Mediterranea. 36(3). 135–144. 17 indexed citations
4.
Johnstone, GR & G.D. McLean. (1987). Virus diseases of subterranean clover. Annals of Applied Biology. 110(2). 421–440. 53 indexed citations
5.
Guy, P. L., GR Johnstone, & J. E. Duffus. (1986). Occurrence and identity of barley yellow dwarf viruses in Tasmanian pasture grasses. Australian Journal of Agricultural Research. 37(1). 43–53. 32 indexed citations
6.
Johnstone, GR, et al.. (1985). Legume Luteovirus Taxonomy and Current Research.. Australasian Plant Pathology. 14(1). 2–2. 8 indexed citations
7.
Johnstone, GR & J. E. Duffus. (1984). Some luteovirus diseases in Tasmania caused by beet western yellows and subterranean clover red leaf viruses. Australian Journal of Agricultural Research. 35(6). 821–830. 29 indexed citations
8.
9.
Johnstone, GR, et al.. (1983). The Current Understanding on Plant Virus Diseases in Tasmania.. Australasian Plant Pathology. 12(2). 24–24. 4 indexed citations
10.
Duffus, J. E. & GR Johnstone. (1982). The probable long association of beet western yellows virus with the potato leaf roll syndrome in Tasmania. Australian Journal of Experimental Agriculture and Animal Husbandry. 22(117). 353–356. 11 indexed citations
11.
Johnstone, GR, et al.. (1982). Purification of a Tasmanian isolate of subterranean clover red leaf virus, and its serological interactions with a New Zealand isolate and other luteoviruses. Australian Journal of Agricultural Research. 33(4). 697–703. 14 indexed citations
12.
Johnstone, GR, et al.. (1982). Incidence of yellows in sugar beet as affected by variation in plant density and arrangement. Bulletin of Entomological Research. 72(2). 289–294. 6 indexed citations
13.
Johnstone, GR. (1981). Ecology and Control of Non-Persistent Viruses in Australia.. Australasian Plant Pathology. 10(3). 48–48. 1 indexed citations
14.
Johnstone, GR, et al.. (1981). Sub-Clover Red Leaf and Sub-Clover Stunt Viruses Are Not Transmitted by Lucerne and Pea Aphids.. Australasian Plant Pathology. 10(4). 65–65. 9 indexed citations
15.
Johnstone, GR & D. C. Munro. (1980). Yellows of Sugar Beet Caused by Subterranean Clover Red Leaf Virus.. Australasian Plant Pathology. 9(3). 4–4. 5 indexed citations
16.
Johnstone, GR, et al.. (1979). The effect of time of sowing on the incidence of subterranean clover red leaf virus infection in broad bean (Vicia faba). Annals of Applied Biology. 91(3). 345–351. 13 indexed citations
17.
Johnstone, GR. (1978). Diseases of broad bean ( Vicia faba L. major) and green pea ( Pisum sativum L.) in Tasmania caused by subterranean clover red leaf virus. Australian Journal of Agricultural Research. 29(5). 1003–1010. 20 indexed citations
18.
Johnstone, GR, et al.. (1974). Therapy of Virus-Infected Plants by Heat Treatment I. Some Properties of Tomato Aspermy Virus and Its Inactivation at 36°C. Australian Journal of Botany. 22(3). 437–450. 4 indexed citations
19.
Johnstone, GR. (1969). Detection of Apple Mosaic Virus. Journal of Phytopathology. 65(2). 155–163. 2 indexed citations
20.
Johnstone, GR, et al.. (1968). Comparisons between Granny Smith apples from healthy and green crinkle virus infected trees. Australian Journal of Experimental Agriculture and Animal Husbandry. 8(32). 381–384. 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.

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Breakdown of academic impact, for papers by J. E. Duffus Breakdown of academic impact, for papers by L. J. Latham Breakdown of academic impact, for papers by M. D. Alegbejo Breakdown of academic impact, for papers by Á. S. Costa Breakdown of academic impact, for papers by H. W. Rossel Breakdown of academic impact, for papers by P. L. Catherall Breakdown of academic impact, for papers by Geoffrey Okao-Okuja Breakdown of academic impact, for papers by John A'brook Breakdown of academic impact, for papers by H. S. Bariana Breakdown of academic impact, for papers by Palaiyur Nanjappan Sivalingam
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