A. S. Claassens

697 total citations
42 papers, 510 citations indexed

About

A. S. Claassens is a scholar working on Soil Science, Plant Science and Industrial and Manufacturing Engineering. According to data from OpenAlex, A. S. Claassens has authored 42 papers receiving a total of 510 indexed citations (citations by other indexed papers that have themselves been cited), including 23 papers in Soil Science, 14 papers in Plant Science and 9 papers in Industrial and Manufacturing Engineering. Recurrent topics in A. S. Claassens's work include Soil Carbon and Nitrogen Dynamics (14 papers), Phosphorus and nutrient management (8 papers) and Soil and Water Nutrient Dynamics (7 papers). A. S. Claassens is often cited by papers focused on Soil Carbon and Nitrogen Dynamics (14 papers), Phosphorus and nutrient management (8 papers) and Soil and Water Nutrient Dynamics (7 papers). A. S. Claassens collaborates with scholars based in South Africa, United Kingdom and Belgium. A. S. Claassens's co-authors include F. C. Wehner, Adane Fentaye Belay, J.M. Beér, Jan H. van Vuuren, J. H. Meyer, André de Villiers, G.K. Theron, M.W. van Rooyen, Rita Barnard and Abi M. Taddesse and has published in prestigious journals such as Biology and Fertility of Soils, Journal of Arid Environments and Land Degradation and Development.

In The Last Decade

A. S. Claassens

42 papers receiving 448 citations

Peers

A. S. Claassens

ACS

IME

Dieter Horlacher Germany

Eva Erhart Austria

John M. Hart United States

Vitor Paulo Vargas Brazil

Richard J. Norman United States

Alan D. Blaylock United States

A. B. Onken United States

Armand R. Krueger United States

M. L. Vitosh United States

M. Maiorana Italy

Dieter Horlacher Germany

A. S. Claassens

272 ×1.0

232 ×1.1

105 ×0.9

ACS

121 ×1.5

47 ×0.8

IME

Citations per year, relative to A. S. Claassens A. S. Claassens (= 1×) peers Dieter Horlacher

Countries citing papers authored by A. S. Claassens

Since Specialization

Citations

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

Fields of papers citing papers by A. S. Claassens

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of A. S. Claassens

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

Claassens, A. S., et al.. (2015). Transformations and distributions of the applied and native phosphorus into different phosphorus pools in incubated Rustenburg and Loskop soils.. International journal of agriculture innovation and research. 3(5). 1571–1578. 3 indexed citations

Claassens, A. S., et al.. (2010). Evaluation of the effect of soil acidity amelioration on maize yield and nutrient interrelationships using stepwise regression and nutrient vector analysis. South African Journal of Plant and Soil. 27(2). 117–125. 3 indexed citations

Claassens, A. S., et al.. (2009). Greenhouse Pot Trials to Determine the Efficacy of Black Urea Compared to Other Nitrogen Sources. Communications in Soil Science and Plant Analysis. 40(1-6). 576–586. 7 indexed citations

Taddesse, Abi M., et al.. (2008). Effects of Shaking Time on Long‐term Phosphorus Desorption using Dialysis Membrane Tubes filled with Hydrous Iron Oxide. Communications in Soil Science and Plant Analysis. 39(19-20). 2985–3001. 1 indexed citations

Vuuren, Jan H. van, J. H. Meyer, & A. S. Claassens. (2006). Potential Use of Near Infrared Reflectance Monitoring in Precision Agriculture. Communications in Soil Science and Plant Analysis. 37(15-20). 2171–2184. 30 indexed citations

Claassens, A. S., et al.. (2005). Exploitation of Soil by Roots as Influenced by Phosphorus Applications. Communications in Soil Science and Plant Analysis. 36(1-3). 393–402. 7 indexed citations

Claassens, A. S., et al.. (2005). The effects of spatial variation of certain soil properties on the winter yield of a lucerne stand. South African Journal of Plant and Soil. 22(1). 38–43. 1 indexed citations

Claassens, A. S., et al.. (2004). Temporal and spatial relations of plant element uptake and yield of a lucerne stand. South African Journal of Plant and Soil. 21(3). 157–165. 1 indexed citations

Boeckx, Pascal, et al.. (2003). Stimulation and suppression of mineralisation and nitrification in incubated soil. South African Journal of Plant and Soil. 20(1). 31–37. 3 indexed citations

10.

Belay, Adane Fentaye, A. S. Claassens, & F. C. Wehner. (2002). Effect of direct nitrogen and potassium and residual phosphorus fertilizers on soil chemical properties, microbial components and maize yield under long-term crop rotation. Biology and Fertility of Soils. 35(6). 420–427. 162 indexed citations

11.

Waals, J.H. van der & A. S. Claassens. (2002). ACCURATE LIME RECOMMENDATIONS UNDER SOUTH AFRICAN CONDITIONS. Communications in Soil Science and Plant Analysis. 33(15-18). 3059–3074. 4 indexed citations

12.

Belay, Adane Fentaye, A. S. Claassens, & F. C. Wehner. (2002). Soil nutrient contents, microbial properties and maize yield under long-term legume-based crop rotation and fertilization: a comparison of residual effect of manure and NPK fertilizers. South African Journal of Plant and Soil. 19(2). 104–110. 12 indexed citations

13.

Belay, Adane Fentaye, A. S. Claassens, F. C. Wehner, & J.M. Beér. (2001). Influence of residual manure on selected nutrient elements and microbial composition of soil under long-term crop rotation. South African Journal of Plant and Soil. 18(1). 1–6. 79 indexed citations

14.

Claassens, A. S., et al.. (2000). Analytical methods and quality assurance. Communications in Soil Science and Plant Analysis. 31(11-14). 1905–1912. 3 indexed citations

15.

Claassens, A. S., et al.. (1999). Changes in inorganic and organic Phosphorus in soil under maize (Zea mays) cultivation. South African Journal of Plant and Soil. 16(4). 207–213. 9 indexed citations

16.

Villiers, André de, M.W. van Rooyen, G.K. Theron, & A. S. Claassens. (1995). The effect of leaching and irrigation on the growth of Atriplex semibaccata. Land Degradation and Development. 6(2). 125–131. 5 indexed citations

17.

Claassens, A. S.. (1994). Influence of varying phosphorus supply on the growth and phosphorus composition of lettuce. Communications in Soil Science and Plant Analysis. 25(9-10). 1209–1221. 5 indexed citations

18.

Claassens, A. S., et al.. (1990). Effect of surface treatments on soil crusting and infiltration. Soil Technology. 3(3). 241–251. 7 indexed citations

19.

Claassens, A. S.. (1990). Factors influencing phosphorus uptake by plants : The dangers of misinterpretation of foliar phosphorus analysis. Communications in Soil Science and Plant Analysis. 21(13-16). 1301–1312. 1 indexed citations

20.

Claassens, A. S., et al.. (1988). The influence of different P, NH⁺ ₄ and NO⁻ ₃ supply levels on the yield and P and Ca relationships in wheat. South African Journal of Plant and Soil. 5(3). 127–130. 1 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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