P. S. Hammes
Impact in
- Soil Science top 5%
- Soil Carbon and Nitrogen Dynamics
- Food Science top 2%
- Potato Plant Research
Papers in
-
- Plant Physiology and Cultivation Studies 9
- Flowering Plant Growth and Cultivation 8
- Sunflower and Safflower Cultivation 6
- Plant nutrient uptake and metabolism 5
- Seed Germination and Physiology 5
- Food Science 22
- Potato Plant Research 17
- Co-authors
- T. Tekalign (7 shared papers)Wondimu Bayu (5 shared papers)P.J. Robbertse (3 shared papers)N.F.G. Rethman (4 shared papers)Getachew Alemu (2 shared papers)Philip Nel (4 shared papers)Godfrey Elijah Zharare (5 shared papers)Puffy Soundy (1 shared paper)
- Journals
- Potato Research (7 papers)Field Crops Research (3 papers)Scientia Horticulturae (2 papers)Plant Growth Regulation (2 papers)South African Journal of Science (1 paper)
- Partner nations
- South AfricaEthiopiaGermany
In The Last Decade
P. S. Hammes
58 papers receiving 932 citations
Peers
Comparison fields: 5 of 77
- Soil Science 219
- Food Science 382
- Plant Science 726
- Agronomy and Crop Science 186
- Forestry 26
Countries citing papers authored by P. S. Hammes
This map shows the geographic impact of P. S. Hammes'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. S. Hammes with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites P. S. Hammes more than expected).
Fields of papers citing papers by P. S. Hammes
This network shows the impact of papers produced by P. S. Hammes. 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. S. Hammes. The network helps show where P. S. Hammes may publish in the future.
Co-authors
The 16 scholars most cited alongside P. S. Hammes, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
Showing the 20 most-cited of 62 papers — load more, or switch the sort, to bring in the rest.
| # | Work | ||
|---|---|---|---|
| 1 | 2005 | 103 | |
| 2 | 2006 | 97 | |
| 3 | 2006 | 96 | |
| 4 | 2004 | 51 | |
| 5 | 2006 | 48 | |
| 6 | 2005 | 48 | |
| 7 | 1975 | 46 | |
| 8 | 2005 | 44 | |
| 9 | 2004 | 43 | |
| 10 | 2007 | 35 | |
| 11 | 2006 | 35 | |
| 12 | 2005 | 30 | |
| 13 | 1998 | 27 | |
| 14 | 1990 | 25 | |
| 15 | 2003 | 22 | |
| 16 | 1985 | 22 | |
| 17 | 1973 | 18 | |
| 18 | 2005 | 17 | |
| 19 | 2005 | 17 | |
| 20 | 1985 | 17 |
About P. S. Hammes
P. S. Hammes is a scholar working on Plant Science, Food Science, Agronomy and Crop Science, Soil Science and Nutrition and Dietetics, having authored 62 papers that have together received 1.1k indexed citations. Recurring topics across this work include Potato Plant Research (17 papers), Crop Yield and Soil Fertility (14 papers), Plant Physiology and Cultivation Studies (9 papers), Flowering Plant Growth and Cultivation (8 papers), Sunflower and Safflower Cultivation (6 papers), Plant nutrient uptake and metabolism (5 papers), Agronomic Practices and Intercropping Systems (5 papers) and Seed Germination and Physiology (5 papers). The work is most often cited by research in Soil Science (219 citations), Food Science (382 citations), Plant Science (726 citations), Agronomy and Crop Science (186 citations) and Forestry (26 citations). P. S. Hammes has collaborated with scholars based in South Africa, Ethiopia and Germany. Frequent co-authors include T. Tekalign, Wondimu Bayu, P.J. Robbertse, N.F.G. Rethman, Getachew Alemu, Philip Nel, Godfrey Elijah Zharare, Puffy Soundy, J. M. Steyn and Paul H. Fourie. Their work appears in journals such as Potato Research, Field Crops Research, Scientia Horticulturae, Plant Growth Regulation and South African Journal of Science.
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.