L. S. Willardson

1.1k total citations
82 papers, 799 citations indexed

About

L. S. Willardson is a scholar working on Civil and Structural Engineering, Soil Science and Environmental Engineering. According to data from OpenAlex, L. S. Willardson has authored 82 papers receiving a total of 799 indexed citations (citations by other indexed papers that have themselves been cited), including 29 papers in Civil and Structural Engineering, 28 papers in Soil Science and 13 papers in Environmental Engineering. Recurrent topics in L. S. Willardson's work include Irrigation Practices and Water Management (21 papers), Soil and Unsaturated Flow (19 papers) and Groundwater flow and contamination studies (9 papers). L. S. Willardson is often cited by papers focused on Irrigation Practices and Water Management (21 papers), Soil and Unsaturated Flow (19 papers) and Groundwater flow and contamination studies (9 papers). L. S. Willardson collaborates with scholars based in United States, Egypt and China. L. S. Willardson's co-authors include J. D. Oster, Chandra A. Madramootoo, Gary P. Merkley, Zohrab Samani, Rex L. Hurst, C. W. Robbins, W. Dierickx, B. D. Meek, J. E. Christiansen and R. J. Hanks and has published in prestigious journals such as Soil Science Society of America Journal, Soil Science and Crop Science.

In The Last Decade

L. S. Willardson

72 papers receiving 658 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
L. S. Willardson United States	17	341	325	178	153	137	82	799
Jan van Schilfgaarde United States	13	196 0.6×	235 0.7×	230 1.3×	125 0.8×	87 0.6×	35	645
P.B.S. Sarma India	16	316 0.9×	187 0.6×	266 1.5×	338 2.2×	141 1.0×	26	815
Roberto Clemente Thailand	16	286 0.8×	244 0.8×	153 0.9×	254 1.7×	162 1.2×	44	824
P.A.C. Raats Netherlands	15	232 0.7×	363 1.1×	300 1.7×	100 0.7×	114 0.8×	37	668
D. B. Jaynes United States	20	425 1.2×	484 1.5×	569 3.2×	272 1.8×	115 0.8×	29	1.1k
N. K. Tyagi India	14	403 1.2×	115 0.4×	132 0.7×	188 1.2×	236 1.7×	44	783
Pierre Ruelle France	18	548 1.6×	510 1.6×	409 2.3×	136 0.9×	297 2.2×	51	1.1k
Frederick R. Troeh United States	9	268 0.8×	179 0.6×	219 1.2×	89 0.6×	80 0.6×	15	694
S. K. Kamra India	14	195 0.6×	164 0.5×	256 1.4×	119 0.8×	86 0.6×	31	663
J.W. Gowing United Kingdom	10	193 0.6×	176 0.5×	190 1.1×	95 0.6×	161 1.2×	26	584

Countries citing papers authored by L. S. Willardson

Since Specialization

Citations

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

Fields of papers citing papers by L. S. Willardson

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of L. S. Willardson

This figure shows the co-authorship network connecting the top 25 collaborators of L. S. Willardson. A scholar is included among the top collaborators of L. S. Willardson 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 L. S. Willardson. L. S. Willardson 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

Willardson, L. S.. (2003). Impact of land utilization systems on agricultural productivity. 6 indexed citations

Willardson, L. S.. (2001). Drainage along the River Nile. Journal of Irrigation and Drainage Engineering. 127(3). 193–193. 3 indexed citations

Willardson, L. S., et al.. (1997). Interactive effect of irrigation and nitrogen fertilization on cotton, soil, and groundwater nitrogen. Communications in Soil Science and Plant Analysis. 28(1-2). 173–187. 3 indexed citations

Allen, Richard G., Charles M. Burt, A. J. Clemmens, & L. S. Willardson. (1996). Water Conservation Definitions From a Hydrologic Viewpoint. 899–904. 7 indexed citations

Tanji, Kenneth K., et al.. (1993). Evaporation Ponds: What are They; Why Some Concerns. 573–579. 2 indexed citations

Willardson, L. S.. (1990). An algorithm for conjunctive use of saline groundwater.. 209–218. 1 indexed citations

Willardson, L. S., et al.. (1986). Practical Land Grading Based on Least Squares. Journal of Irrigation and Drainage Engineering. 112(2). 98–109. 16 indexed citations

Willardson, L. S., et al.. (1986). Artesian and Anisotropic Effects on Drain Spacing. Journal of Irrigation and Drainage Engineering. 112(1). 55–64. 5 indexed citations

Willardson, L. S., et al.. (1984). Hydraulic Ram Use for Sprinkle Irrigation. Transactions of the ASAE. 27(6). 1788–1791. 2 indexed citations

10.

Willardson, L. S., et al.. (1980). Drainage requirements and systems.. 235–277. 3 indexed citations

11.

Hagemann, R., et al.. (1978). Effect of irrigation frequencies on alfalfa seed yield. California Agriculture. 32(10). 17–18. 2 indexed citations

12.

Hanks, R. J., et al.. (1977). Model of Salt Flow in Soil with a Source‐sink Term. Soil Science Society of America Journal. 41(1). 29–33. 19 indexed citations

13.

Bliesner, Ron D., et al.. (1977). Effects of Irrigation Management on the Quality of Irrigation Return Flow in Ashley Valley, Utah. Soil Science Society of America Journal. 41(2). 424–428. 4 indexed citations

14.

Hagemann, R., et al.. (1976). Alfalfa seed underground drip irrigation. California Agriculture. 30(4). 22–22.

15.

Hachum, Ahmed, L. S. Willardson, & Jose F. Alfaro. (1976). Water Movement in Soil from Trickle Source. Journal of the Irrigation and Drainage Division. 102(2). 179–192. 17 indexed citations

16.

Oster, J. D., et al.. (1976). Irrigation Control Using Tensiometers and Salinity Sensors. Transactions of the ASAE. 19(2). 294–298. 3 indexed citations

17.

Hagemann, R., et al.. (1975). Irrigating for maximum alfalfa seed yield. California Agriculture. 29(11). 14–15. 3 indexed citations

18.

Richards, S. J., et al.. (1973). Tensiometer Use in Shallow Ground-Water Studies. Journal of the Irrigation and Drainage Division. 99(4). 457–464. 2 indexed citations

19.

Willardson, L. S., et al.. (1972). Nitrate Reduction with Submerged Drains. Transactions of the ASAE. 15(1). 84–85. 8 indexed citations

20.

Willardson, L. S., et al.. (1963). Separation of Evapotranspiration and Deep Percolation. Journal of the Irrigation and Drainage Division. 89(3). 77–88. 2 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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