J. E. Harper

1.6k total citations
32 papers, 1.2k citations indexed

About

J. E. Harper is a scholar working on Plant Science, Agronomy and Crop Science and Ecology, Evolution, Behavior and Systematics. According to data from OpenAlex, J. E. Harper has authored 32 papers receiving a total of 1.2k indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Plant Science, 11 papers in Agronomy and Crop Science and 3 papers in Ecology, Evolution, Behavior and Systematics. Recurrent topics in J. E. Harper's work include Legume Nitrogen Fixing Symbiosis (22 papers), Soybean genetics and cultivation (14 papers) and Plant nutrient uptake and metabolism (10 papers). J. E. Harper is often cited by papers focused on Legume Nitrogen Fixing Symbiosis (22 papers), Soybean genetics and cultivation (14 papers) and Plant nutrient uptake and metabolism (10 papers). J. E. Harper collaborates with scholars based in United States, Australia and United Kingdom. J. E. Harper's co-authors include R. H. Hageman, A. H. Gibson, J. Webster, Tri D. Vuong, Mohamed Hemida Abd‐Alla, C. D. Nickell, Frederick E. Below, Steven J. Crafts‐Brandner, Takuji Ohyama and George E. Goslow and has published in prestigious journals such as PLANT PHYSIOLOGY, Journal of Bacteriology and Journal of Experimental Botany.

In The Last Decade

J. E. Harper

31 papers receiving 1.1k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
J. E. Harper United States	20	1.0k	360	91	88	65	32	1.2k
V. Mahalakshmi India	23	1.4k 1.3×	466 1.3×	132 1.5×	107 1.2×	94 1.4×	58	1.6k
D. R. Tottman Italy	7	891 0.9×	389 1.1×	103 1.1×	109 1.2×	69 1.1×	10	1.0k
William M. Stall United States	19	879 0.8×	274 0.8×	106 1.2×	84 1.0×	52 0.8×	89	952
D. A. Ashley United States	23	1.6k 1.6×	378 1.1×	96 1.1×	207 2.4×	65 1.0×	56	1.8k
P. S. Nutman United States	18	969 0.9×	492 1.4×	58 0.6×	85 1.0×	44 0.7×	40	1.1k
Jason A. Ferrell United States	19	898 0.9×	241 0.7×	105 1.2×	91 1.0×	74 1.1×	107	1.1k
William A. Brun United States	25	1.7k 1.6×	401 1.1×	267 2.9×	133 1.5×	98 1.5×	51	1.9k
Chris M. Boerboom United States	21	903 0.9×	441 1.2×	95 1.0×	165 1.9×	94 1.4×	51	1.1k
A. K. Dobrenz United States	15	617 0.6×	185 0.5×	98 1.1×	82 0.9×	71 1.1×	82	759
R.J. Field New Zealand	14	579 0.6×	149 0.4×	77 0.8×	62 0.7×	95 1.5×	63	722

Countries citing papers authored by J. E. Harper

Since Specialization

Citations

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

Fields of papers citing papers by J. E. Harper

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of J. E. Harper

This figure shows the co-authorship network connecting the top 25 collaborators of J. E. Harper. A scholar is included among the top collaborators of J. E. Harper 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. E. Harper. J. E. Harper 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

Lewis, Timothy A., Angela Glassing, J. E. Harper, & Michael J. Franklin. (2013). Role for Ferredoxin:NAD(P)H Oxidoreductase (FprA) in Sulfate Assimilation and Siderophore Biosynthesis in Pseudomonads. Journal of Bacteriology. 195(17). 3876–3887. 10 indexed citations

Harper, J. E., et al.. (2003). Media, profit, and politics : competing priorities in an open society. Medical Entomology and Zoology. 8 indexed citations

Parker, Mark, et al.. (2003). New Hydraulic Fracturing-Fluid Technology Increases Production in the Barnett Shale and Reduces Impact on the Environment. SPE Production and Operations Symposium. 10 indexed citations

Harper, J. E., et al.. (2002). Systems model for learning. 1. 2a3.1–2a3.7. 2 indexed citations

Vuong, Tri D. & J. E. Harper. (2000). Inheritance and Allelism Analysis of Hypernodulating Genes in the NOD3‐7 and NOD2‐4 Soybean Mutants. Crop Science. 40(3). 700–703. 5 indexed citations

Abd‐Alla, Mohamed Hemida, Tri D. Vuong, & J. E. Harper. (1998). Genotypic Differences in Dinitrogen Fixation Response to NaCl Stress in Intact and Grafted Soybean. Crop Science. 38(1). 72–77. 52 indexed citations

Vuong, Tri D., C. D. Nickell, & J. E. Harper. (1996). Genetic and Allelism Analyses of Hypernodulation Soybean Mutants from Two Genetic Backgrounds. Crop Science. 36(5). 1153–1158. 18 indexed citations

Nickell, C. D., et al.. (1994). Agronomic Evaluation of Non‐Nodulating and Hypernodulating Mutants of Soybean. Crop Science. 34(3). 738–740. 23 indexed citations

Ohyama, Takuji, et al.. (1993). Assimilation of¹⁵N₂and¹⁵NO₃⁻by Partially Nitrate-Tolerant Nodulation Mutants of Soybean. Journal of Experimental Botany. 44(12). 1739–1747. 28 indexed citations

10.

Harper, J. E., et al.. (1986). Analysis Of Contestants' Scores In The National FFA Agrcicultural Mechanics Contest 1979-1984. Journal of Agricultural Education. 27(2). 27–33. 1 indexed citations

11.

Harper, J. E., et al.. (1985). Effect of Hastened Flowering on Seed Yield and Dry Matter Partitioning in Diverse Soybean Genotypes¹. Crop Science. 25(6). 995–998. 10 indexed citations

12.

Crafts‐Brandner, Steven J., Frederick E. Below, J. E. Harper, & R. H. Hageman. (1984). Effects of Pod Removal on Metabolism and Senescence of Nodulating and Nonnodulating Soybean Isolines. PLANT PHYSIOLOGY. 75(2). 311–317. 34 indexed citations

13.

Harper, J. E., et al.. (1977). Nodulation of Soybeans Grown Hydroponically on Urea¹. Crop Science. 17(1). 169–172. 25 indexed citations

14.

Harper, J. E., et al.. (1976). Control of Nutrient Solution pH with an Ion Exchange System: Effect on Soybean Nodulation. Physiologia Plantarum. 38(1). 24–28. 39 indexed citations

15.

Harper, J. E., et al.. (1974). Improvements of the Nitrite Color Development in Assays of Nitrate Reductase by Phenazine Methosulfate and Zinc Acetate. PLANT PHYSIOLOGY. 53(6). 825–828. 125 indexed citations

16.

Harper, J. E. & R. H. Hageman. (1972). Canopy and Seasonal Profiles of Nitrate Reductase in Soybeans. 49. 21 indexed citations

17.

Harper, J. E. & R. H. Hageman. (1972). Canopy and Seasonal Profiles of Nitrate Reductase in Soybeans (Glycine max L. Merr.). PLANT PHYSIOLOGY. 49(2). 146–154. 105 indexed citations

18.

Harper, J. E., et al.. (1972). Seasonal and Canopy Variation in Nitrate Reductase Activity of Soybean (Glycine max L. Merr.) Varieties¹. Crop Science. 12(3). 382–386. 13 indexed citations

19.

Harper, J. E. & J. Webster. (1964). An experimental analysis of the coprophilous fungus succession. Transactions of the British Mycological Society. 47(4). 511–530. 88 indexed citations

20.

Kidwell, J. F., et al.. (1959). Relation of Production Factors to Conformation Scores and Body Measurements, Associations among Production Factors and the Relation of Carcass Grade and Fatness to Consumer Preferences in Yearling Steers1. Journal of Animal Science. 18(3). 894–908. 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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