Leif Knudsen

647 total citations
11 papers, 366 citations indexed

About

Leif Knudsen is a scholar working on Agronomy and Crop Science, Pollution and Environmental Chemistry. According to data from OpenAlex, Leif Knudsen has authored 11 papers receiving a total of 366 indexed citations (citations by other indexed papers that have themselves been cited), including 5 papers in Agronomy and Crop Science, 4 papers in Pollution and 4 papers in Environmental Chemistry. Recurrent topics in Leif Knudsen's work include Crop Yield and Soil Fertility (5 papers), Heavy metals in environment (4 papers) and Soil Carbon and Nitrogen Dynamics (3 papers). Leif Knudsen is often cited by papers focused on Crop Yield and Soil Fertility (5 papers), Heavy metals in environment (4 papers) and Soil Carbon and Nitrogen Dynamics (3 papers). Leif Knudsen collaborates with scholars based in Denmark and New Zealand. Leif Knudsen's co-authors include Sven G. Sommer, Kirsten Schelde, Pai Pedas, Chris Hebbern, Vagn Gundersen, Jan K. Schjøerring, Steen Husted, Bo Markussen, Jørgen E. Olesen and Sander Bruun and has published in prestigious journals such as SHILAP Revista de lepidopterología, Journal of Agricultural and Food Chemistry and Plant and Soil.

In The Last Decade

Leif Knudsen

11 papers receiving 344 citations

Peers

Leif Knudsen

ACS

ECOLO

Jeff Jacobsen United States

Soil Scientist United States

Kirsten E. Macneal United States

Akinyemi Olayinka Nigeria

Amar Bahadur Singh India

Maria Eugênia Ortiz Escobar Brazil

Abhik Patra India

Howard J. Woodard United States

Joost Salomez Belgium

O. Mikanová Czechia

Jeff Jacobsen United States

Leif Knudsen

183 ×1.1

158 ×1.4

47 ×0.7

ACS

83 ×1.2

ECOLO

37 ×0.7

Citations per year, relative to Leif Knudsen Leif Knudsen (= 1×) peers Jeff Jacobsen

Countries citing papers authored by Leif Knudsen

Since Specialization

Citations

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

Fields of papers citing papers by Leif Knudsen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Leif Knudsen. 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 Leif Knudsen. The network helps show where Leif Knudsen may publish in the future.

Co-authorship network of co-authors of Leif Knudsen

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

All Works

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11 of 11 papers shown

Vogeler, Iris, Uttam Kumar, Leif Knudsen, et al.. (2024). Development of Algorithm for Determining N Fertiliser Requirements of Winter Wheat Based on N Status Using APSIM Modelling. SHILAP Revista de lepidopterología. 4(2). 134–144. 1 indexed citations

Sommer, Sven G. & Leif Knudsen. (2021). Impact of Danish Livestock and Manure Management Regulations on Nitrogen Pollution, Crop Production, and Economy. SHILAP Revista de lepidopterología. 2. 40 indexed citations

Styczen, Merete, Per Abrahamsen, Søren Hansen, & Leif Knudsen. (2020). Model analysis of the significant drop in protein content in Danish grain crops from 1990-2015. European Journal of Agronomy. 118. 126068–126068. 15 indexed citations

Styczen, Merete, Per Abrahamsen, Søren Hansen, & Leif Knudsen. (2020). Analysis of the significant drop in protein content in Danish grain crops from 1990-2015 based on N-response in fertilizer trials. European Journal of Agronomy. 115. 126013–126013. 9 indexed citations

Oelofse, Myles, Bo Markussen, Leif Knudsen, et al.. (2015). Do soil organic carbon levels affect potential yields and nitrogen use efficiency? An analysis of winter wheat and spring barley field trials. European Journal of Agronomy. 66. 62–73. 84 indexed citations

Berntsen, Jørgen, et al.. (2006). Algorithms for sensor-based redistribution of nitrogen fertilizer in winter wheat. Precision Agriculture. 7(2). 65–83. 58 indexed citations

Hebbern, Chris, Pai Pedas, Jan K. Schjøerring, Leif Knudsen, & Steen Husted. (2005). Genotypic differences in manganese efficiency: field experiments with␣winter barley (Hordeum vulgare L.). Plant and Soil. 272(1-2). 233–244. 77 indexed citations

Knudsen, Leif, et al.. (1999). Concentrations of 63 elements in cabbage and sprouts in Denmark. Communications in Soil Science and Plant Analysis. 30(17-18). 2409–2418. 34 indexed citations

Haneklaus, Silvia, Leif Knudsen, & Ewald Schnug. (1998). Relationship between potassium and sodium in sugar beet. Communications in Soil Science and Plant Analysis. 29(11-14). 1793–1798. 17 indexed citations

10.

Stürup, Stefan, et al.. (1998). Concentrations of 63 Major and Trace Elements in Danish Agricultural Crops Measured by Inductively Coupled Plasma Mass Spectrometry. 1. Onion (Allium cepa Hysam). Journal of Agricultural and Food Chemistry. 46(8). 3139–3145. 19 indexed citations

11.

Stürup, Stefan, et al.. (1998). Concentrations of 55 Major and Trace Elements in Danish Agricultural Crops Measured by Inductively Coupled Plasma Mass Spectrometry. 2. Pea (Pisum sativumPing Pong). Journal of Agricultural and Food Chemistry. 46(8). 3146–3149. 12 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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