Charles A. Shapiro

4.4k total citations · 1 hit paper
93 papers, 3.1k citations indexed

About

Charles A. Shapiro is a scholar working on Soil Science, Agronomy and Crop Science and Plant Science. According to data from OpenAlex, Charles A. Shapiro has authored 93 papers receiving a total of 3.1k indexed citations (citations by other indexed papers that have themselves been cited), including 44 papers in Soil Science, 36 papers in Agronomy and Crop Science and 30 papers in Plant Science. Recurrent topics in Charles A. Shapiro's work include Soil Carbon and Nitrogen Dynamics (38 papers), Soil and Water Nutrient Dynamics (26 papers) and Crop Yield and Soil Fertility (23 papers). Charles A. Shapiro is often cited by papers focused on Soil Carbon and Nitrogen Dynamics (38 papers), Soil and Water Nutrient Dynamics (26 papers) and Crop Yield and Soil Fertility (23 papers). Charles A. Shapiro collaborates with scholars based in United States, China and Philippines. Charles A. Shapiro's co-authors include Charles S. Wortmann, John L. Lindquist, Humberto Blanco‐Canqui, Gary W. Hergert, Roger W. Elmore, Tim M. Shaver, Charles Francis, Stevan Z. Knežević, Richard B. Ferguson and David D. Tarkalson and has published in prestigious journals such as Environmental Science & Technology, Journal of Hazardous Materials and Soil Science Society of America Journal.

In The Last Decade

Charles A. Shapiro

87 papers receiving 2.9k citations

Hit 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.

Cover Crops and Ecosystem Services: Insights from Studies in Temperate Soils

2015 784 citations Humberto Blanco‐Canqui, Tim M. Shaver et al. Agronomy Journal profile →

Peers

Charles A. Shapiro

ACS

POLLU

James J. Camberato United States

M. C. Manna India

David D. Tarkalson United States

Zhaohui Wang China

P. W. G. Sale Australia

Shaojun Qiu China

Roberto Mancinelli Italy

C. Matthew New Zealand

Sara Marinari Italy

Jim Rasmussen Denmark

James J. Camberato United States

Charles A. Shapiro

985 ×0.7

1.6k ×1.2

1.0k ×0.8

ACS

668 ×1.4

247 ×0.7

POLLU

Citations per year, relative to Charles A. Shapiro Charles A. Shapiro (= 1×) peers James J. Camberato

Countries citing papers authored by Charles A. Shapiro

Since Specialization

Citations

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

Fields of papers citing papers by Charles A. Shapiro

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Charles A. Shapiro. 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 Charles A. Shapiro. The network helps show where Charles A. Shapiro may publish in the future.

Co-authorship network of co-authors of Charles A. Shapiro

This figure shows the co-authorship network connecting the top 25 collaborators of Charles A. Shapiro. A scholar is included among the top collaborators of Charles A. Shapiro 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 Charles A. Shapiro. Charles A. Shapiro 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

Blanco‐Canqui, Humberto, et al.. (2025). Interseeding cover crop into an irrigated sandy loam for 6 years: Soil, crop, and economic response. Agronomy Journal. 117(1). 1 indexed citations

Shapiro, Charles A., et al.. (2024). Long‐term comparison of targeted soil test values and crop removal as a phosphorus fertilization strategy in corn. Agronomy Journal. 116(6). 3240–3255. 2 indexed citations

Blanco‐Canqui, Humberto, Sabrina J. Ruis, Katja Koehler‐Cole, et al.. (2023). Cover crops and soil health in rainfed and irrigated corn: What did we learn after 8 years?. Soil Science Society of America Journal. 87(5). 1174–1190. 8 indexed citations

Li, Jianwu, Yuan Su, Charles A. Shapiro, Daniel P. Schachtman, & Xuemin Wang. (2023). Phosphate deficiency modifies lipid composition and seed oil production in camelina. Plant Science. 330. 111636–111636. 6 indexed citations

Stewart, Zachary, Ellen T. Paparozzi, Charles S. Wortmann, Prakash Kumar Jha, & Charles A. Shapiro. (2021). Effect of Foliar Micronutrients (B, Mn, Fe, Zn) on Maize Grain Yield, Micronutrient Recovery, Uptake, and Partitioning. Plants. 10(3). 528–528. 20 indexed citations

Stewart, Zachary, Ellen T. Paparozzi, Charles S. Wortmann, Prakash Kumar Jha, & Charles A. Shapiro. (2020). Foliar Micronutrient Application for High-Yield Maize. Agronomy. 10(12). 1946–1946. 10 indexed citations

Knežević, Stevan Z., et al.. (2018). Cover crop species and termination method effects on organic maize and soybean. Biological Agriculture & Horticulture. 35(1). 1–20. 16 indexed citations

Heeren, Derek M., Katja Koehler‐Cole, Charles A. Shapiro, et al.. (2018). Cover Crops have Negligible Impact on Soil Water in Nebraska Maize–Soybean Rotation. Agronomy Journal. 110(5). 1718–1730. 24 indexed citations

Shapiro, Charles A., et al.. (2017). Crop sequence and in-season nitrogen (N) application effects on organic winter wheat (Triticum aestivum L.) yield and quality. Biological Agriculture & Horticulture. 33(3). 158–171. 3 indexed citations

10.

Biswas, Sagor, William L. Kranz, Charles A. Shapiro, et al.. (2016). Effect of rainfall timing and tillage on the transport of steroid hormones in runoff from manure amended row crop fields. Journal of Hazardous Materials. 324(Pt B). 436–447. 48 indexed citations

11.

Attia, Ahmed, et al.. (2015). Improved Yield and Nitrogen Use Efficiency of Corn following Soybean in Irrigated Sandy Loams. Soil Science Society of America Journal. 79(6). 1693–1703. 34 indexed citations

12.

Datta, Avishek, et al.. (2015). The effectiveness of flame weeding and cultivation on weed control, yield and yield components of organic soybean as influenced by manure application. Renewable Agriculture and Food Systems. 31(4). 288–299. 15 indexed citations

13.

Wortmann, Charles S., et al.. (2012). The Nebraska Phosphorus Index (2012): Background And Users Guide. Insecta mundi. 1 indexed citations

14.

Wortmann, Charles S., et al.. (2005). Manure Use Planning: An Evaluation of a Producer Training Program. Biochimica et Biophysica Acta. 1236(1). 1–9. 1 indexed citations

15.

Elmore, Roger W., Fred W. Roeth, Robert N. Klein, et al.. (2001). Glyphosate‐Resistant Soybean Cultivar Response to Glyphosate. Agronomy Journal. 93(2). 404–407. 48 indexed citations

16.

Eghball, Bahman, Christopher J. Bauer, Charles A. Shapiro, & James S. Schepers. (2000). Site-Specific Manure Application Effects on Corn Yield and Nitrogen Status. Proceedings of the Water Environment Federation. 2000(16). 203–219. 1 indexed citations

17.

Shapiro, Charles A.. (1999). Using a chlorophyll meter to manage nitrogen applications to corn with high nitrate irrigation water. Communications in Soil Science and Plant Analysis. 30(7-8). 1037–1049. 36 indexed citations

18.

McCallister, D. L., Charles A. Shapiro, W. R. Raun, et al.. (1987). Rate of Phosphorus and Potassium Buildup/Decline with Fertilization for Corn and Wheat on Nebraska Mollisols. Soil Science Society of America Journal. 51(6). 1646–1652. 25 indexed citations

19.

Dobermann, Achim & Charles A. Shapiro. (1979). G79-481 Setting a Realistic Corn Yield Goal (Revised January 2004). Insecta mundi. 1 indexed citations

20.

Hergert, Gary W., Charles A. Shapiro, & Richard B. Ferguson. (1974). G74-174 Fertilizer Suggestions For Corn (Revised July 1995). Insecta mundi. 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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