J. L. Purchase

757 total citations
19 papers, 576 citations indexed

About

J. L. Purchase is a scholar working on Plant Science, Agronomy and Crop Science and Genetics. According to data from OpenAlex, J. L. Purchase has authored 19 papers receiving a total of 576 indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Plant Science, 13 papers in Agronomy and Crop Science and 2 papers in Genetics. Recurrent topics in J. L. Purchase's work include Wheat and Barley Genetics and Pathology (12 papers), Crop Yield and Soil Fertility (10 papers) and Genetics and Plant Breeding (8 papers). J. L. Purchase is often cited by papers focused on Wheat and Barley Genetics and Pathology (12 papers), Crop Yield and Soil Fertility (10 papers) and Genetics and Plant Breeding (8 papers). J. L. Purchase collaborates with scholars based in South Africa, United Kingdom and Switzerland. J. L. Purchase's co-authors include C. S. van Deventer, G. A. Agenbag, Marie F. Smith, V. Tolmay, O. T. de Villiers, Z. A. Pretorius, H. Smit, Gerhard Prinsloo, Johan van Rooyen and P. Anandajayasekeram and has published in prestigious journals such as Value in Health, Euphytica and Mycotoxin Research.

In The Last Decade

J. L. Purchase

17 papers receiving 515 citations

Peers

J. L. Purchase

ACS

GENET

C. S. van Deventer South Africa

Seyfi Taner Türkiye

O. J. Ariyo Nigeria

Dimitrios Baxevanos Greece

P. E. de O. Guimarães Brazil

H. S. Pereira Brazil

R Choukan Iran

Kassahun Bantte Ethiopia

Chandra Nath Mishra India

Asghar Mehraban Iran

C. S. van Deventer South Africa

J. L. Purchase

565 ×1.0

144 ×1.0

ACS

144 ×1.1

GENET

45 ×0.9

26 ×0.9

Citations per year, relative to J. L. Purchase J. L. Purchase (= 1×) peers C. S. van Deventer

Countries citing papers authored by J. L. Purchase

Since Specialization

Citations

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

Fields of papers citing papers by J. L. Purchase

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J. L. Purchase. 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. L. Purchase. The network helps show where J. L. Purchase may publish in the future.

Co-authorship network of co-authors of J. L. Purchase

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

All Works

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19 of 19 papers shown

Purchase, J. L., et al.. (2023). The association of food ingredients in breakfast cereal products and fumonisins production: risks identification and predictions. Mycotoxin Research. 39(3). 165–175. 2 indexed citations

Purchase, J. L., et al.. (2017). Health Related Quality of Life in Cancer Immunotherapy: Previously Treated, Locally Advanced or Metastatic Non-Small-Cell Lung Cancer. Value in Health. 20(9). A450–A450. 1 indexed citations

Purchase, J. L., et al.. (2016). DEFINING A PRICING AND REIMBURSEMENT MODEL FOR COMPANION DIAGNOSTICS: A STAKEHOLDER-BASED APPROACH. Value in Health. 19(3). A260–A261. 1 indexed citations

Smit, H., et al.. (2010). An overview of the context and scope of wheat (Triticum aestivum) research in South Africa from 1983 to 2008. South African Journal of Plant and Soil. 27(1). 81–96. 31 indexed citations

Purchase, J. L., et al.. (2003). Productivity and stability of grain yield in wheat and maize as affected by rotational cropping systems in the eastern Free State. South African Journal of Plant and Soil. 20(2). 81–86. 5 indexed citations

Purchase, J. L., et al.. (2000). Genotype × environment interaction of winter wheat (Triticum aestivum L.) in South Africa: I. AMMI analysis of yield performance. South African Journal of Plant and Soil. 17(3). 95–100. 25 indexed citations

Purchase, J. L., et al.. (2000). Genotype × environment interaction of winter wheat (Triticum aestivum L.) in South Africa: II. Stability analysis of yield performance. South African Journal of Plant and Soil. 17(3). 101–107. 432 indexed citations

Agenbag, G. A., et al.. (2000). Sources of variation in spring wheat (Triticum aestivum L.) cultivars of the Western and Southern Cape. II. Baking characteristics. South African Journal of Plant and Soil. 17(1). 40–48. 5 indexed citations

Agenbag, G. A., et al.. (2000). Sources of variation in spring wheat (Triticum aestivum L.) cultivars of the Western and Southern Cape. I. Milling and dough development characteristics. South African Journal of Plant and Soil. 17(1). 30–39. 3 indexed citations

10.

Anandajayasekeram, P., et al.. (1999). The socio-economic impact of the russian wheat aphid integrated control program. 8 indexed citations

11.

Purchase, J. L., et al.. (1999). The use of the AMMI model and AMMI stability value to describe genotype x environment interaction and yield stability in winter wheat (Triticum aestivum L.). 1 indexed citations

12.

Agenbag, G. A., et al.. (1998). Sources of variation for yield, protein content and hectolitre mass of spring wheat (Triticum aestivum L.) cultivars of the Western and Southern Cape. South African Journal of Plant and Soil. 15(2). 72–79. 11 indexed citations

13.

Purchase, J. L., et al.. (1997). Evaluation of CERES-wheat v2.10: Soil water content under rainfed conditions. South African Journal of Plant and Soil. 14(4). 139–145. 1 indexed citations

14.

Purchase, J. L., et al.. (1997). Determination of the preharvest sprouting resistance of South African winter wheat (Triticum aestivumL.) cultivars. South African Journal of Plant and Soil. 14(1). 4–8. 12 indexed citations

15.

Purchase, J. L., et al.. (1996). Progress of the Southern African Regional Wheat Evaluation and Improvement Nursery (SARWEIN) from 1974 to 1993.

16.

Purchase, J. L., et al.. (1995). Multivariate assessment of environmental effects on hard red winter wheat. I. Principal-components analysis of yield and bread-making characteristics. South African Journal of Plant and Soil. 12(4). 158–163. 16 indexed citations

17.

Purchase, J. L., et al.. (1995). Directions in breeding for winter wheat yield and quality in South Africa from 1930 to 1990. Euphytica. 82(1). 79–87. 14 indexed citations

18.

Purchase, J. L., et al.. (1995). Multivariate assessment of environmental effects on hard red winter wheat. II. Canonical correlation and canonical variate analysis of yield, biochemical and bread-making characteristics. South African Journal of Plant and Soil. 12(4). 164–169. 5 indexed citations

19.

Purchase, J. L., et al.. (1992). The effects of various seed treatments on the germination, coleoptile length and emergence of South African winter wheats ( Triticum aestivum L.). South African Journal of Plant and Soil. 9(3). 139–143. 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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