P. Allen Hammer

622 total citations
46 papers, 364 citations indexed

About

P. Allen Hammer is a scholar working on Plant Science, Soil Science and Ecology, Evolution, Behavior and Systematics. According to data from OpenAlex, P. Allen Hammer has authored 46 papers receiving a total of 364 indexed citations (citations by other indexed papers that have themselves been cited), including 37 papers in Plant Science, 5 papers in Soil Science and 4 papers in Ecology, Evolution, Behavior and Systematics. Recurrent topics in P. Allen Hammer's work include Plant Physiology and Cultivation Studies (17 papers), Flowering Plant Growth and Cultivation (15 papers) and Greenhouse Technology and Climate Control (8 papers). P. Allen Hammer is often cited by papers focused on Plant Physiology and Cultivation Studies (17 papers), Flowering Plant Growth and Cultivation (15 papers) and Greenhouse Technology and Climate Control (8 papers). P. Allen Hammer collaborates with scholars based in United States, Brazil and Canada. P. Allen Hammer's co-authors include Brian E. Whipker, Cary A. Mitchell, Gaines E. Miles, William B. Miller, Gary W. Krutz, Atelene Normann Kämpf, Harrison L. Flint, Bernard A. Engel, Richard Latin and Amots Hetzroni and has published in prestigious journals such as Ecology, HortScience and Advances in Space Research.

In The Last Decade

P. Allen Hammer

39 papers receiving 308 citations

Peers

P. Allen Hammer
Clare Croser Canada
Shangjun Xing China
Roy A. Larson United States
H. A. Esechie Oman
R. Habib France
Richard C. Derksen United States
U. Hartmond United States
A. Mika Poland
P. Parchomchuk Canada
L. K. Wiersum United States
Clare Croser Canada
P. Allen Hammer
Citations per year, relative to P. Allen Hammer P. Allen Hammer (= 1×) peers Clare Croser

Countries citing papers authored by P. Allen Hammer

Since Specialization
Citations

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

Fields of papers citing papers by P. Allen Hammer

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by P. Allen Hammer. 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. Allen Hammer. The network helps show where P. Allen Hammer may publish in the future.

Co-authorship network of co-authors of P. Allen Hammer

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

All Works

20 of 20 papers shown
1.
Hammer, P. Allen. (2007). Netherlands and Germany. 70(11). 20.
2.
Hammer, P. Allen. (2001). High-End Extrusion Control. New Control Generation Combines PC Technology with SPC Systems.. 91(7). 33–35. 1 indexed citations
3.
Joly, Robert J., et al.. (2000). Influence of Day and Night Temperature Differentials on Root Elongation Rate, Root Hydraulic Properties, and Shoot Water Relations in Chrysanthemum. Journal of the American Society for Horticultural Science. 125(3). 383–389.
4.
Ranwala, Anil P., et al.. (2000). Ancymidol Drenches, Reversed Greenhouse Temperatures, Postgreenhouse Cold Storage, and Hormone Sprays Affect Postharvest Leaf Chlorosis in Easter Lily. Journal of the American Society for Horticultural Science. 125(2). 248–253. 17 indexed citations
5.
Whipker, Brian E. & P. Allen Hammer. (1996). DEVELOPMENT AND ASSESSMENT OF AN ACIDIFICATION CALCULATOR FOR IRRIGATION WATER ALKALINITY REGULATION. HortScience. 31(5). 752e–752. 1 indexed citations
6.
Whipker, Brian E. & P. Allen Hammer. (1994). EFFECTIVENESS OF PACLOBUTRAZOL ON HEIGHT CONTROL OF MINI-POINSETTIAS. HortScience. 29(5). 544c–544. 1 indexed citations
7.
Whipker, Brian E. & P. Allen Hammer. (1994). Determination of Injurious Phosphorus Levels in Poinsettias. HortScience. 29(2). 85–87. 6 indexed citations
8.
Hetzroni, Amots, Gaines E. Miles, Bernard A. Engel, P. Allen Hammer, & Richard Latin. (1994). Machine vision monitoring of plant health. Advances in Space Research. 14(11). 203–212. 24 indexed citations
9.
Whipker, Brian E. & P. Allen Hammer. (1992). INFLUENCE OF INCREASED ROOT MEDIA PHOSPHORUS LEVELS IN POINSETTIA PRODUCTION. HortScience. 27(6). 687f–687. 1 indexed citations
10.
Hammer, P. Allen, et al.. (1989). Stimulation of “Hydrangea Distortion” Through Environmental Manipulations. Journal of the American Society for Horticultural Science. 114(3). 411–416. 1 indexed citations
11.
Hammer, P. Allen, et al.. (1989). Modeling Stem Elongation of Easter Lilies Grown Under Various Production Schemes. HortScience. 24(5). 785–788. 1 indexed citations
12.
Hammer, P. Allen, et al.. (1987). Poinsettia Tolerance of Molybdenum. HortScience. 22(6). 1284–1285. 7 indexed citations
13.
Miles, Gaines E., et al.. (1987). Robotic Transplanting of Bedding Plants. Transactions of the ASAE. 30(3). 586–590. 36 indexed citations
14.
Hammer, P. Allen, et al.. (1986). In Vitro Propagation of Florists’ Hydrangea. HortScience. 21(3). 525–526. 3 indexed citations
15.
Puri, Virendra M., et al.. (1981). Analysis and summary of a solar air collector-groundwater heat storage-greenhouse heating system. 3 indexed citations
16.
Hammer, P. Allen. (1981). Controlling Variability1. HortScience. 16(5). 628–630.
17.
Ormrod, D. P., P. Allen Hammer, Donald T. Krizek, et al.. (1980). Base-line Growth Studies of ‘First Lady’ Marigold in Controlled Environments1. Journal of the American Society for Horticultural Science. 105(5). 632–638. 10 indexed citations
18.
Hammer, P. Allen, et al.. (1980). In Vitro Propagation of Gypsophila paniculata L. ‘Bristol Fairy’1,2. HortScience. 15(5). 600–601. 9 indexed citations
19.
Hammer, P. Allen & R. W. Langhans. (1978). Modeling of Plant Growth in Horticulture. HortScience. 13(4). 456–458. 2 indexed citations
20.
Hammer, P. Allen, et al.. (1974). Height Control in Greenhouse Chrysanthemum by Mechanical Stress1. HortScience. 9(5). 474–475. 27 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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