William E. May

4.0k citations

119 papers · 2.7k · h-index 33

Impact in

Agronomy and Crop Science top 0.5%
- Agronomic Practices and Intercropping Systems
- Crop Yield and Soil Fertility
- Bioenergy crop production and management
Soil Science top 1%
- Soil Carbon and Nitrogen Dynamics

Papers in

Plant Science 95
- Wheat and Barley Genetics and Pathology 25
- Legume Nitrogen Fixing Symbiosis 20
- Plant nutrient uptake and metabolism 16
- Weed Control and Herbicide Applications 12
Agronomy and Crop Science 65
- Agronomic Practices and Intercropping Systems 34
- Crop Yield and Soil Fertility 29

Co-authors: G. P. Lafond (69 shared papers)Eric N. Johnson (30 shared papers)C. B. Holzapfel (17 shared papers)Yantai Gan (17 shared papers)K. Neil Harker (22 shared papers)John T. O’Donovan (22 shared papers)Cynthia A. Grant (18 shared papers)Robert E. Blackshaw (14 shared papers)
Journals: Agronomy Journal (18 papers)Canadian Journal of Plant Science (61 papers)Canadian Journal of Soil Science (4 papers)Weed Technology (4 papers)Field Crops Research (3 papers)
Partner nations: Canada United States New Zealand

In The Last Decade

William E. May

116 papers receiving 2.5k citations

Peers

Countries citing papers authored by William E. May

Since Specialization

Citations

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

Fields of papers citing papers by William E. May

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by William E. May. 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 William E. May. The network helps show where William E. May may publish in the future.

Co-authors

The 25 scholars most cited alongside William E. May, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with William E. May Line = papers co-authored together William E. May links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 119 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Effects of tillage method and crop rotation on non-renewable energy use efficiency for a thin Black Chernozem in the Canadian Prairies Soil and Tillage Research ·R.P. Zentner, G. P. Lafond, D. A. Derksen, C.N. Nagy, David D. Wall, William E. May	2004	141
2	A Systematic Review of Durum Wheat: Enhancing Production Systems by Exploring Genotype, Environment, and Management (G × E × M) Synergies Frontiers in Plant Science ·Brian L. Beres, Elham Rahmani, J. M. Clarke, Patricio Grassini, Curtis Pozniak, Charles M. Geddes, Kenton Porker, William E. May, Joel K. Ransom	2020	111
3	Alternative oilseed crops for biodiesel feedstock on the Canadian prairies Canadian Journal of Plant Science ·Robert E. Blackshaw, Eric N. Johnson, Yantai Gan, William E. May, D.W. McAndrew, Véronique J. Barthet, Tanya U. McDonald, Dan Wispinski	2011	106
4	Litter decay controlled by temperature, not soil properties, affecting future soil carbon Global Change Biology ·E. G. Gregorich, H. H. Janzen, Benjamin H. Ellert, Bobbi L. Helgason, Budong Qian, Bernie J. Zebarth, Denis A. Angers, (unknown), C. F. Drury, Scott Duguid, William E. May, B.G. McConkey, Miles Dyck	2016	96
5	Legumes can reduce economic optimum nitrogen rates and increase yields in a wheat–canola cropping sequence in western Canada Field Crops Research ·Mervin St. Luce, Cynthia A. Grant, Bernie J. Zebarth, Noura Ziadi, John T. O’Donovan, Robert E. Blackshaw, K. Neil Harker, Eric N. Johnson, Yantai Gan, G. P. Lafond, William E. May, Mohammad Khakbazan, Elwin G. Smith	2015	94
6	Structural equation modeling in the plant sciences: An example using yield components in oat Canadian Journal of Plant Science ·Eric G. Lamb, Steven J. Shirtliffe, William E. May	2011	85
7	Seeding Rate, Nitrogen Rate, and Cultivar Effects on Malting Barley Production Agronomy Journal ·John T. O’Donovan, T. Kelly Turkington, M. J. Edney, George W. Clayton, Ross H. McKenzie, P. E. Juskiw, G. P. Lafond, Cynthia A. Grant, S.A. Brandt, K. Neil Harker, Eric N. Johnson, William E. May	2011	72
8	Rotational Effects of Legumes and Non‐Legumes on Hybrid Canola and Malting Barley Agronomy Journal ·John T. O’Donovan, Cynthia A. Grant, Robert E. Blackshaw, K. Neil Harker, Eric N. Johnson, Yantai Gan, G. P. Lafond, William E. May, T. Kelly Turkington, Newton Z. Lupwayi, F. Craig Stevenson, Debra L. McLaren, Mohammad Khakbazan, Elwin G. Smith	2014	68
9	Row Spacing and Nitrogen Fertilizer Effect on No‐Till Oat Production Agronomy Journal ·G. P. Lafond, William E. May, C. B. Holzapfel	2012	64
10	Effects of tillage systems and rotations on crop production for a thin Black Chernozem in the Canadian Prairies Soil and Tillage Research ·G. P. Lafond, William E. May, F. Craig Stevenson, D. A. Derksen	2005	61
11	Quantifying Straw Removal through Baling and Measuring the Long‐Term Impact on Soil Quality and Wheat Production Agronomy Journal ·G. P. Lafond, Mark Stumborg, R. Lemke, William E. May, C. B. Holzapfel, C. A. Campbell	2009	59
12	High-yield no-till canola production on the Canadian prairies Canadian Journal of Plant Science ·K. N. Harker, John T. O’Donovan, T. Kelly Turkington, Robert E. Blackshaw, Newton Z. Lupwayi, Elwin G. Smith, H. W. Klein‐Gebbinck, Lloyd M. Dosdall, Linda M. Hall, Christian J. Willenborg, H. R. Kutcher, S. S. Malhi, Cecil Vera, Yantai Gan, G. P. Lafond, William E. May, Cynthia A. Grant, Debra L. McLaren	2012	57
13	Residual effects of preceding crops and nitrogen fertilizer on yield and crop and soil N dynamics of spring wheat and canola in varying environments on the Canadian prairies Field Crops Research ·Cynthia A. Grant, John T. O’Donovan, Robert E. Blackshaw, K. Neil Harker, Eric N. Johnson, Yantai Gan, G. P. Lafond, William E. May, T. Kelly Turkington, Newton Z. Lupwayi, Debra L. McLaren, Bernie J. Zebarth, Mohammad Khakbazan, Mervin St. Luce, Ravindra Ramnarine	2016	55
14	Diversifying cropping systems enhances productivity, stability, and nitrogen use efficiency Agronomy Journal ·Mervin St. Luce, Reynald Lemke, Yantai Gan, B.G. McConkey, William E. May, Con A. Campbell, R.P. Zentner, Hong Wang, R. Kroebel, M. R. Fernandez, Kelsey Brandt	2020	52
15	Effect of nitrogen fertilizer application on seed yield, N uptake, and seed quality of Camelina sativa Canadian Journal of Soil Science ·S. S. Malhi, Eric N. Johnson, Linda M. Hall, William E. May, S. Phelps, B. Nybo	2013	52
16	Long term impact of no-till on soil properties and crop productivity on the Canadian prairies Soil and Tillage Research ·G. P. Lafond, F.L. Walley, William E. May, C. B. Holzapfel	2011	52
17	Preceding crops and nitrogen fertilization influence soil nitrogen cycling in no-till canola and wheat cropping systems Field Crops Research ·Mervin St. Luce, Cynthia A. Grant, Noura Ziadi, Bernie J. Zebarth, John T. O’Donovan, Robert E. Blackshaw, K. Neil Harker, Eric N. Johnson, Yantai Gan, G. P. Lafond, William E. May, S. S. Malhi, T. Kelly Turkington, Newton Z. Lupwayi, Debra L. McLaren	2016	51
18	Carbon footprint of spring barley in relation to preceding oilseeds and N fertilization The International Journal of Life Cycle Assessment ·Yantai Gan, Chang Liang, William E. May, S. S. Malhi, Junyi Niu, Xiaoyu Wang	2012	49
19	Effect of nitrogen, seeding date and cultivar on oat quality and yield in the eastern Canadian prairies Canadian Journal of Plant Science ·William E. May, Ramona M. Mohr, G. P. Lafond, Adrian Johnston, F. Craig Stevenson	2004	48
20	N, P, and S fertilization effects on industrial hemp in Saskatchewan Canadian Journal of Plant Science ·Cecil Vera, S. S. Malhi, S. Phelps, William E. May, Eric N. Johnson	2010	47

About William E. May

William E. May is a scholar working on Plant Science, Agronomy and Crop Science, Soil Science, Molecular Biology and Environmental Chemistry, having authored 119 papers that have together received 2.7k indexed citations. Recurring topics across this work include Agronomic Practices and Intercropping Systems (34 papers), Crop Yield and Soil Fertility (29 papers), Soil Carbon and Nitrogen Dynamics (25 papers), Wheat and Barley Genetics and Pathology (25 papers), Nitrogen and Sulfur Effects on Brassica (24 papers), Legume Nitrogen Fixing Symbiosis (20 papers), Plant nutrient uptake and metabolism (16 papers) and Weed Control and Herbicide Applications (12 papers). The work is most often cited by research in Agronomy and Crop Science (1.2k citations), Soil Science (840 citations), Plant Science (1.7k citations), Environmental Chemistry (242 citations) and Forestry (79 citations). William E. May has collaborated with scholars based in Canada, United States and New Zealand. Frequent co-authors include G. P. Lafond, Eric N. Johnson, C. B. Holzapfel, Yantai Gan, K. Neil Harker, John T. O’Donovan, Cynthia A. Grant, Robert E. Blackshaw, F. Craig Stevenson and Steven J. Shirtliffe. Their work appears in journals such as Agronomy Journal, Canadian Journal of Plant Science, Canadian Journal of Soil Science, Weed Technology and Field Crops Research.

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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