S.F. Ledgard

8.5k total citations
188 papers, 6.6k citations indexed

About

S.F. Ledgard is a scholar working on Environmental Chemistry, Soil Science and Ecology. According to data from OpenAlex, S.F. Ledgard has authored 188 papers receiving a total of 6.6k indexed citations (citations by other indexed papers that have themselves been cited), including 93 papers in Environmental Chemistry, 85 papers in Soil Science and 83 papers in Ecology. Recurrent topics in S.F. Ledgard's work include Soil and Water Nutrient Dynamics (88 papers), Soil Carbon and Nitrogen Dynamics (83 papers) and Agriculture Sustainability and Environmental Impact (69 papers). S.F. Ledgard is often cited by papers focused on Soil and Water Nutrient Dynamics (88 papers), Soil Carbon and Nitrogen Dynamics (83 papers) and Agriculture Sustainability and Environmental Impact (69 papers). S.F. Ledgard collaborates with scholars based in New Zealand, China and Australia. S.F. Ledgard's co-authors include Jiafa Luo, M. S. Sprosen, K. W. Steele, Cecile A. M. de Klein, Stuart Lindsey, J.W. Penno, Claudine Basset-Mens, Anna Flysjö, Christel Cederberg and Maria Henriksson and has published in prestigious journals such as Proceedings of the National Academy of Sciences, SHILAP Revista de lepidopterología and Environmental Science & Technology.

In The Last Decade

S.F. Ledgard

185 papers receiving 6.1k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
S.F. Ledgard New Zealand	45	2.7k	2.7k	2.4k	1.9k	1.2k	188	6.6k
Robert M. Rees United Kingdom	50	4.9k 1.8×	3.0k 1.1×	2.3k 1.0×	2.0k 1.0×	2.2k 1.8×	232	9.4k
Charles W. Rice United States	47	5.9k 2.2×	2.9k 1.1×	1.9k 0.8×	1.6k 0.8×	2.8k 2.3×	155	10.3k
Jo Smith United Kingdom	43	5.1k 1.9×	3.2k 1.2×	1.8k 0.8×	1.2k 0.6×	1.0k 0.8×	170	8.8k
Stephen M. Ogle United States	39	6.0k 2.2×	3.1k 1.2×	2.0k 0.9×	1.5k 0.8×	1.5k 1.2×	104	9.9k
B.G. McConkey Canada	53	4.6k 1.7×	2.0k 0.8×	1.6k 0.7×	2.7k 1.4×	3.0k 2.5×	207	8.8k
Thomas Kätterer Sweden	52	5.8k 2.2×	3.0k 1.1×	2.0k 0.8×	1.4k 0.7×	1.4k 1.2×	186	8.6k
Peter Grace Australia	45	4.5k 1.7×	1.9k 0.7×	2.1k 0.9×	1.1k 0.6×	1.9k 1.5×	215	7.2k
Jiafa Luo New Zealand	54	5.0k 1.8×	2.6k 1.0×	2.9k 1.2×	1.7k 0.9×	1.7k 1.4×	252	8.9k
Luis Lassaletta Spain	42	2.0k 0.7×	2.0k 0.8×	2.0k 0.8×	719 0.4×	1.3k 1.1×	78	7.0k
Laurie E. Drinkwater United States	37	3.8k 1.4×	1.3k 0.5×	1.8k 0.7×	1.9k 1.0×	3.1k 2.6×	69	7.3k

Countries citing papers authored by S.F. Ledgard

Since Specialization

Citations

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

Fields of papers citing papers by S.F. Ledgard

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of S.F. Ledgard

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

Pacheco, D., et al.. (2023). Relationships between dietary factors and nitrogen partitioning to milk and urine in temperate grazing dairy cattle. New Zealand Journal of Agricultural Research. 67(3). 314–327. 1 indexed citations

McLaren, Sarah J., et al.. (2016). Consequential Life Cycle Assessment of Pasture‐based Milk Production: A Case Study in the Waikato Region, New Zealand. Journal of Industrial Ecology. 21(5). 1139–1152. 11 indexed citations

Ledgard, S.F., et al.. (2014). Effects of the nitrification inhibitor dicyandiamide (DCD) on pasture production, nitrous oxide emissions and nitrate leaching in Waikato, New Zealand. New Zealand Journal of Agricultural Research. 57(4). 294–315. 34 indexed citations

Betteridge, K., et al.. (2010). Nitrogen concentration in the urine of cattle, sheep and deer grazing a common ryegrass/cocksfoot/white clover pasture. New Zealand Journal of Agricultural Research. 53(3). 235–243. 54 indexed citations

Shepherd, Mark, et al.. (2010). Application of carbon additives to reduce nitrogen leaching from cattle urine patches on pasture. New Zealand Journal of Agricultural Research. 53(3). 263–280. 20 indexed citations

Sprosen, M. S., S.F. Ledgard, & Stuart Lindsey. (2009). Effect of rate and form of dicyandiamide application on nitrate leaching and pasture production from a volcanic ash soil in the Waikato. New Zealand Journal of Agricultural Research. 52(1). 47–55. 17 indexed citations

Luo, Jiafa, A. Donnison, Colleen Ross, et al.. (2008). Sawdust and bark to treat nitrogen and faecal bacteria in winter stand‐off pads on a dairy farm. New Zealand Journal of Agricultural Research. 51(3). 331–340. 15 indexed citations

Monaghan, R. M., M. J. Hedley, Hong J. Di, et al.. (2007). Nutrient management in New Zealand pastures— recent developments and future issues. New Zealand Journal of Agricultural Research. 50(2). 181–201. 128 indexed citations

Smith, L. C., R. M. Monaghan, S.F. Ledgard, & W.D. Catto. (2005). The effectiveness of different nitrification inhibitor formulations in limiting nitrate accumulation in a Southland pastoral soil. New Zealand Journal of Agricultural Research. 48(4). 517–529. 27 indexed citations

10.

Ledgard, S.F., M. S. Sprosen, K. W. Steele, & Charles P. West. (1995). Productivity of white clover cultivars under intensive grazing, as affected by high nitrogen fertiliser application. New Zealand Journal of Agricultural Research. 38(4). 473–482. 12 indexed citations

11.

Ledgard, S.F. & M. Upsdell. (1991). Sulphur inputs from rainfall throughout New Zealand. New Zealand Journal of Agricultural Research. 34(1). 105–111. 18 indexed citations

12.

Ledgard, S.F., et al.. (1990). Effect of clover cultivar on production and nitrogen fixation in clover‐ryegrass swards under dairy cow grazing. New Zealand Journal of Agricultural Research. 33(2). 243–249. 43 indexed citations

13.

Ledgard, S.F., et al.. (1990). Variability in pasture nitrogen fractions and the relationship to bloat. New Zealand Journal of Agricultural Research. 33(2). 237–242. 3 indexed citations

14.

Wedderburn, M. E., et al.. (1990). Responses of a New Zealand North Island hill perennial ryegrass collection to nitrogen, moisture stress, and grass grub ( Costelytra zealandica ) infestation. New Zealand Journal of Agricultural Research. 33(3). 405–411. 10 indexed citations

15.

Ledgard, S.F., et al.. (1988). Production and nitrogen fixation by ‘Grasslands Kopu’ and ‘Grasslands Huia’ white clovers under different nitrogen regimes. New Zealand Journal of Agricultural Research. 31(3). 325–330. 14 indexed citations

16.

Ledgard, S.F., et al.. (1987). Legume production and nitrogen fixation in hill pasture communities. New Zealand Journal of Agricultural Research. 30(4). 413–421. 44 indexed citations

17.

Ledgard, S.F., et al.. (1983). Influence of some soil and pasture components on the growth of hill country pastures. New Zealand Journal of Crop and Horticultural Science. 11(3). 251–256. 16 indexed citations

18.

Ledgard, S.F. & William M. Saunders. (1982). Effects of nitrogen fertiliser and urine on pasture performance and the influence of soil phosphorus and potassium status. New Zealand Journal of Agricultural Research. 25(4). 541–547. 52 indexed citations

19.

Ledgard, S.F., G. W. Sheath, & A. G. Gillingham. (1982). Influence of some soil and pasture components on the growth of hill country pastures 1. Winter and spring production. New Zealand Journal of Crop and Horticultural Science. 10(3). 239–244. 20 indexed citations

20.

Ledgard, S.F., et al.. (1981). Responses by white clover to two application methods of superphosphate, Calciphos, and a blend on two soils of contrasting phosphate‐fixing capacity. New Zealand Journal of Crop and Horticultural Science. 9(2). 161–167. 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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