P. N. Soltanpour

12.5k total citations · 3 hit papers
62 papers, 10.1k citations indexed

About

P. N. Soltanpour is a scholar working on Plant Science, Soil Science and Pollution. According to data from OpenAlex, P. N. Soltanpour has authored 62 papers receiving a total of 10.1k indexed citations (citations by other indexed papers that have themselves been cited), including 25 papers in Plant Science, 17 papers in Soil Science and 13 papers in Pollution. Recurrent topics in P. N. Soltanpour's work include Heavy metals in environment (13 papers), Plant Micronutrient Interactions and Effects (13 papers) and Soil Carbon and Nitrogen Dynamics (10 papers). P. N. Soltanpour is often cited by papers focused on Heavy metals in environment (13 papers), Plant Micronutrient Interactions and Effects (13 papers) and Soil Carbon and Nitrogen Dynamics (10 papers). P. N. Soltanpour collaborates with scholars based in United States, Morocco and Iran. P. N. Soltanpour's co-authors include Donald L. Sparks, Cliff T. Johnston, Philip A. Helmke, M. E. Sumner, M. A. Tabatabai, A. L. Page, Richard H. Loeppert, A. P. Schwab, S. M. Workman and J. L. Havlin and has published in prestigious journals such as Scientific Reports, Soil Science Society of America Journal and Journal of Environmental Quality.

In The Last Decade

P. N. Soltanpour

60 papers receiving 9.5k citations

Hit Papers

3 papers align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Methods of soil analysis. Part 3 - chemical methods.

1996 7.6k citations P. N. Soltanpour et al. profile →
A new soil test for simultaneous extraction of macro‐ and micro‐nutrients in alkaline soils

1977 683 citations P. N. Soltanpour et al. Communications in Soil Science and Plant Analysis profile →
Use of ammonium bicarbonate DTPA soil test to evaluate elemental availability and toxicity

1985 382 citations P. N. Soltanpour Communications in Soil Science and Plant Analysis profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
P. N. Soltanpour United States	22	4.2k	3.5k	2.3k	1.8k	1.4k	62	10.1k
Philip A. Helmke United States	26	3.3k 0.8×	2.2k 0.6×	2.4k 1.0×	1.9k 1.0×	1.5k 1.0×	52	9.8k
M. E. Sumner United States	19	3.8k 0.9×	2.4k 0.7×	1.8k 0.8×	1.7k 0.9×	1.4k 1.0×	41	9.1k
D. R. Keeney United States	42	3.8k 0.9×	2.3k 0.7×	1.5k 0.7×	3.1k 1.7×	1.9k 1.3×	133	9.7k
Richard H. Loeppert United States	32	3.6k 0.9×	2.9k 0.8×	3.4k 1.5×	5.0k 2.7×	1.4k 1.0×	86	13.0k
Warren A. Dick United States	53	4.9k 1.2×	2.6k 0.7×	2.0k 0.9×	2.4k 1.3×	1.6k 1.1×	220	11.4k
Richard P. Dick United States	55	6.6k 1.6×	3.8k 1.1×	2.1k 0.9×	2.2k 1.2×	2.2k 1.6×	189	11.8k
Philippe Hinsinger France	48	3.6k 0.9×	6.2k 1.8×	1.4k 0.6×	1.3k 0.7×	1.1k 0.8×	92	10.2k
M. J. Hedley New Zealand	48	5.2k 1.3×	2.6k 0.8×	1.2k 0.5×	3.5k 1.9×	1.3k 0.9×	185	10.4k
P. C. Brookes United Kingdom	28	6.9k 1.7×	2.3k 0.7×	1.1k 0.5×	2.8k 1.5×	2.6k 1.8×	61	9.2k
Alessandro Piccolo Italy	65	5.4k 1.3×	5.5k 1.6×	2.9k 1.3×	1.3k 0.7×	2.0k 1.4×	291	14.9k

Countries citing papers authored by P. N. Soltanpour

Since Specialization

Citations

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

Fields of papers citing papers by P. N. Soltanpour

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of P. N. Soltanpour

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

All Works

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

20 of 20 papers shown

Soltanpour, P. N.. (2019). Soil testing for fertilizer recommendations. Digital Collections of Colorado (Colorado State University).

Follett, R. H. & P. N. Soltanpour. (2019). Irrigation water quality criteria. Digital Collections of Colorado (Colorado State University). 6 indexed citations

Soltanpour, P. N., et al.. (1999). Chloride Versus Sulfate Salinity Effects on Alfalfa Shoot Growth and Ionic Balance. Soil Science Society of America Journal. 63(1). 111–116. 11 indexed citations

Soltanpour, P. N., et al.. (1993). Onion Irrigation and Nitrogen Leaching in the Arkansas Valley of Colorado 1990-1991. HortTechnology. 3(2). 184–187. 23 indexed citations

Soltanpour, P. N., et al.. (1989). Wheat P requirement on calcareous Moroccan soils: II. As estimated by the olsen P soil test and plant uptake. Communications in Soil Science and Plant Analysis. 20(7-8). 893–908. 4 indexed citations

Soltanpour, P. N., et al.. (1987). Comparison of Soil Tests for Assessing Boron Toxicity to Alfalfa. Soil Science Society of America Journal. 51(5). 1214–1219. 20 indexed citations

Soltanpour, P. N., et al.. (1985). A Comparison of NH ₄ HCO ₃ ‐DTPA, NaHCO ₃ , CaCl ₂ , and Na ₂ ‐EDTA Soil Tests for Phosphorus. Soil Science Society of America Journal. 49(6). 1437–1440. 16 indexed citations

Harivandi, M. A., J. D. Butler, & P. N. Soltanpour. (1983). Effects of soluble salts on ion accumulation in Puccinellia spp.^l. Journal of Plant Nutrition. 6(3). 255–266. 6 indexed citations

Soltanpour, P. N., S. R. Olsen, & R. J. Goos. (1982). Effect of Nitrogen Fertilization of Dryland Wheat on Grain Selenium Concentration. Soil Science Society of America Journal. 46(2). 430–433. 4 indexed citations

10.

Havlin, J. L. & P. N. Soltanpour. (1982). Greenhouse and field evaluation of the NH₄HCO₃‐dtpa soil test for Fe¹. Journal of Plant Nutrition. 5(4-7). 769–783. 11 indexed citations

11.

Harivandi, M. A., J. D. Butler, & P. N. Soltanpour. (1982). Effects of sea water concentrations on germination and ion accumulation in alkaligrass (Pucclnellia spp.). Communications in Soil Science and Plant Analysis. 13(7). 507–517. 9 indexed citations

12.

Soltanpour, P. N. & S. M. Workman. (1981). Soil-testing methods used at Colorado State University Soil-Testing Laboratory for the evaluation of fertility, salinity, sodicity, and trace-element toxicity. Technical Bulletin 142. OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information). 17 indexed citations

13.

Soltanpour, P. N., et al.. (1981). Boron analysis in soil extracts and plant tissue by plasma emission spectroscopy. Communications in Soil Science and Plant Analysis. 12(8). 733–742. 13 indexed citations

14.

Workman, S. M. & P. N. Soltanpour. (1980). Importance of Prereducing Selenium(VI) to Selenium(IV) and Decomposing Organic Matter in Soil Extracts Prior to Determination of Selenium Using Hydride Generation. Soil Science Society of America Journal. 44(6). 1331–1333. 30 indexed citations

15.

Havlin, J. L. & P. N. Soltanpour. (1980). A nitric acid plant tissue digest method for use with inductively coupled plasma spectrometry. Communications in Soil Science and Plant Analysis. 11(10). 969–980. 218 indexed citations

16.

Khan, M. Adam & P. N. Soltanpour. (1978). Effect of wetting and drying on DTPA‐extractable Fe, Zn, Mn, and Cu in soils. Communications in Soil Science and Plant Analysis. 9(3). 193–202. 24 indexed citations

17.

Soltanpour, P. N. & C. V. Cole. (1978). Ionic balance and growth of potatoes as affected by N plus P fertilization. American Journal of Potato Research. 55(10). 549–560. 11 indexed citations

18.

Reuss, J. O., et al.. (1977). Sampling Distribution of Nitrates in Irrigated Fields¹. Agronomy Journal. 69(4). 588–592. 19 indexed citations

19.

Soltanpour, P. N., M. Adam Khan, & W. L. Lindsay. (1976). Factors affecting DTPA‐extractable Zn, Fe, Mn, and Cu from soils. Communications in Soil Science and Plant Analysis. 7(9). 797–821. 45 indexed citations

20.

Soltanpour, P. N., et al.. (1970). Zinc experiments on potatoes in the San Luis Valley of Colorado. American Journal of Potato Research. 47(11). 435–443. 8 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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