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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Plant Science and Agronomy 61 1169 1075 45 41 276 11294

Robert E. Blackshaw publications per year

The chart shows the history of publications by Robert E. Blackshaw between 1981 and 2024, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Robert E. Blackshaw published across 44 years, from 1981 to 2024, averaging 6.3 papers a year. Output peaked at 20 publications in 2007. 2 of the 277 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1981 to 2024. Vertical axis: number of publications, 0 to 20. Peak 20 publications in 2007. 1981: 2 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 0 publications 1986: 0 publications 1987: 1 publication 1988: 1 publication 1989: 3 publications 1990: 5 publications 1991: 7 publications 1992: 4 publications 1993: 5 publications 1994: 12 publications 1995: 6 publications 1996: 7 publications 1997: 2 publications 1998: 8 publications 1999: 4 publications 2000: 5 publications 2001: 11 publications 2002: 8 publications 2003: 9 publications 2004: 11 publications 2005: 12 publications 2006: 12 publications 2007: 20 publications 2008: 11 publications 2009: 12 publications 2010: 10 publications 2011: 6 publications 2012: 7 publications 2013: 7 publications 2014: 7 publications 2015: 14 publications 2016: 17 publications 2017: 10 publications 2018: 7 publications 2019: 5 publications 2020: 0 publications 2021: 5 publications 2022: 2 publications 2023: 1 publication 2024: 1 publication
1981 2024

277 publications in total across all disciplines

View publications per year as a table
Robert E. Blackshaw: publications per year, 1981 to 2024
Year Publications
1981 2
1982 0
1983 0
1984 0
1985 0
1986 0
1987 1
1988 1
1989 3
1990 5
1991 7
1992 4
1993 5
1994 12
1995 6
1996 7
1997 2
1998 8
1999 4
2000 5
2001 11
2002 8
2003 9
2004 11
2005 12
2006 12
2007 20
2008 11
2009 12
2010 10
2011 6
2012 7
2013 7
2014 7
2015 14
2016 17
2017 10
2018 7
2019 5
2020 0
2021 5
2022 2
2023 1
2024 1
Total 277
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Robert E. Blackshaw publication distribution in Plant Science and Agronomy in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Plant Science and Agronomy in 2026. The highlighted bar marks where Robert E. Blackshaw sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 88 bars. Horizontal axis: publications, 36–40 to 467+. Vertical axis: number of scientists, 0 to 255. Most scientists, 255, have 111–115 publications. The last bar groups every scientist with 467 publications or more. The highlighted bar, 276–280 publications, is where this scientist sits. 36–40 publications: 2 scientists 41–45 publications: 7 scientists 46–50 publications: 40 scientists 51–55 publications: 58 scientists 56–60 publications: 60 scientists 61–65 publications: 107 scientists 66–70 publications: 130 scientists 71–75 publications: 153 scientists 76–80 publications: 191 scientists 81–85 publications: 199 scientists 86–90 publications: 206 scientists 91–95 publications: 218 scientists 96–100 publications: 226 scientists 101–105 publications: 227 scientists 106–110 publications: 247 scientists 111–115 publications: 255 scientists 116–120 publications: 253 scientists 121–125 publications: 233 scientists 126–130 publications: 219 scientists 131–135 publications: 201 scientists 136–140 publications: 194 scientists 141–145 publications: 176 scientists 146–150 publications: 157 scientists 151–155 publications: 147 scientists 156–160 publications: 151 scientists 161–165 publications: 159 scientists 166–170 publications: 137 scientists 171–175 publications: 128 scientists 176–180 publications: 126 scientists 181–185 publications: 98 scientists 186–190 publications: 114 scientists 191–195 publications: 100 scientists 196–200 publications: 90 scientists 201–205 publications: 71 scientists 206–210 publications: 98 scientists 211–215 publications: 70 scientists 216–220 publications: 86 scientists 221–225 publications: 61 scientists 226–230 publications: 58 scientists 231–235 publications: 53 scientists 236–240 publications: 64 scientists 241–245 publications: 39 scientists 246–250 publications: 46 scientists 251–255 publications: 51 scientists 256–260 publications: 36 scientists 261–265 publications: 44 scientists 266–270 publications: 35 scientists 271–275 publications: 30 scientists 276–280 publications: 33 scientists 281–285 publications: 35 scientists 286–290 publications: 36 scientists 291–295 publications: 26 scientists 296–300 publications: 26 scientists 301–305 publications: 31 scientists 306–310 publications: 30 scientists 311–315 publications: 21 scientists 316–320 publications: 29 scientists 321–325 publications: 14 scientists 326–330 publications: 15 scientists 331–335 publications: 15 scientists 336–340 publications: 17 scientists 341–345 publications: 15 scientists 346–350 publications: 12 scientists 351–355 publications: 17 scientists 356–360 publications: 18 scientists 361–365 publications: 12 scientists 366–370 publications: 11 scientists 371–375 publications: 6 scientists 376–380 publications: 6 scientists 381–385 publications: 11 scientists 386–390 publications: 9 scientists 391–395 publications: 10 scientists 396–400 publications: 8 scientists 401–405 publications: 4 scientists 406–410 publications: 9 scientists 411–415 publications: 11 scientists 416–420 publications: 4 scientists 421–425 publications: 7 scientists 426–430 publications: 4 scientists 431–435 publications: 3 scientists 436–440 publications: 5 scientists 441–445 publications: 8 scientists 446–450 publications: 6 scientists 451–455 publications: 7 scientists 456–460 publications: 5 scientists 461–465 publications: 6 scientists 466 publications: 2 scientists 467+ publications: 99 scientists
36–40 publications 467+

This scientist: 276 publications — 90th percentile

90% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 467 publications or more.

View publications distribution as a table
Number of Plant Science and Agronomy scientists by publication count, Research.com 2026 ranking edition. Based on 6,494 ranked scientists.
Publications Scientists This scientist
36–40 2
41–45 7
46–50 40
51–55 58
56–60 60
61–65 107
66–70 130
71–75 153
76–80 191
81–85 199
86–90 206
91–95 218
96–100 226
101–105 227
106–110 247
111–115 255
116–120 253
121–125 233
126–130 219
131–135 201
136–140 194
141–145 176
146–150 157
151–155 147
156–160 151
161–165 159
166–170 137
171–175 128
176–180 126
181–185 98
186–190 114
191–195 100
196–200 90
201–205 71
206–210 98
211–215 70
216–220 86
221–225 61
226–230 58
231–235 53
236–240 64
241–245 39
246–250 46
251–255 51
256–260 36
261–265 44
266–270 35
271–275 30
276–280 33 276
281–285 35
286–290 36
291–295 26
296–300 26
301–305 31
306–310 30
311–315 21
316–320 29
321–325 14
326–330 15
331–335 15
336–340 17
341–345 15
346–350 12
351–355 17
356–360 18
361–365 12
366–370 11
371–375 6
376–380 6
381–385 11
386–390 9
391–395 10
396–400 8
401–405 4
406–410 9
411–415 11
416–420 4
421–425 7
426–430 4
431–435 3
436–440 5
441–445 8
446–450 6
451–455 7
456–460 5
461–465 6
466 2
467+ 99
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Robert E. Blackshaw D-index placement in Plant Science and Agronomy in 2026

The chart shows the D-index (discipline H-index) distribution of Plant Science and Agronomy scientists ranked by Research.com in 2026. The highlighted bar marks where Robert E. Blackshaw sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 80 bars. Horizontal axis: D-Index, 30 to 109+. Vertical axis: number of scientists, 0 to 288. Most scientists, 288, have 34 D-Index. The last bar groups every scientist with 109 D-Index or more. The highlighted bar, 61 D-Index, is where this scientist sits. 30 D-Index: 200 scientists 31 D-Index: 236 scientists 32 D-Index: 253 scientists 33 D-Index: 283 scientists 34 D-Index: 288 scientists 35 D-Index: 240 scientists 36 D-Index: 246 scientists 37 D-Index: 243 scientists 38 D-Index: 247 scientists 39 D-Index: 229 scientists 40 D-Index: 232 scientists 41 D-Index: 230 scientists 42 D-Index: 228 scientists 43 D-Index: 219 scientists 44 D-Index: 193 scientists 45 D-Index: 164 scientists 46 D-Index: 158 scientists 47 D-Index: 143 scientists 48 D-Index: 131 scientists 49 D-Index: 127 scientists 50 D-Index: 122 scientists 51 D-Index: 122 scientists 52 D-Index: 110 scientists 53 D-Index: 102 scientists 54 D-Index: 98 scientists 55 D-Index: 79 scientists 56 D-Index: 85 scientists 57 D-Index: 88 scientists 58 D-Index: 91 scientists 59 D-Index: 62 scientists 60 D-Index: 61 scientists 61 D-Index: 59 scientists 62 D-Index: 54 scientists 63 D-Index: 61 scientists 64 D-Index: 59 scientists 65 D-Index: 58 scientists 66 D-Index: 41 scientists 67 D-Index: 49 scientists 68 D-Index: 39 scientists 69 D-Index: 32 scientists 70 D-Index: 40 scientists 71 D-Index: 47 scientists 72 D-Index: 38 scientists 73 D-Index: 28 scientists 74 D-Index: 29 scientists 75 D-Index: 28 scientists 76 D-Index: 22 scientists 77 D-Index: 21 scientists 78 D-Index: 25 scientists 79 D-Index: 26 scientists 80 D-Index: 19 scientists 81 D-Index: 16 scientists 82 D-Index: 12 scientists 83 D-Index: 16 scientists 84 D-Index: 14 scientists 85 D-Index: 11 scientists 86 D-Index: 17 scientists 87 D-Index: 13 scientists 88 D-Index: 10 scientists 89 D-Index: 12 scientists 90 D-Index: 18 scientists 91 D-Index: 16 scientists 92 D-Index: 16 scientists 93 D-Index: 17 scientists 94 D-Index: 12 scientists 95 D-Index: 8 scientists 96 D-Index: 9 scientists 97 D-Index: 9 scientists 98 D-Index: 11 scientists 99 D-Index: 12 scientists 100 D-Index: 5 scientists 101 D-Index: 8 scientists 102 D-Index: 4 scientists 103 D-Index: 11 scientists 104 D-Index: 5 scientists 105 D-Index: 9 scientists 106 D-Index: 7 scientists 107 D-Index: 4 scientists 108 D-Index: 8 scientists 109+ D-Index: 99 scientists
30 D-Index 109+

This scientist: 61 D-Index — 83rd percentile

83% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 109 D-Index or more.

View D-Index distribution as a table
Number of Plant Science and Agronomy scientists by D-index, Research.com 2026 ranking edition. Based on 6,494 ranked scientists.
D-Index Scientists This scientist
30 200
31 236
32 253
33 283
34 288
35 240
36 246
37 243
38 247
39 229
40 232
41 230
42 228
43 219
44 193
45 164
46 158
47 143
48 131
49 127
50 122
51 122
52 110
53 102
54 98
55 79
56 85
57 88
58 91
59 62
60 61
61 59 61
62 54
63 61
64 59
65 58
66 41
67 49
68 39
69 32
70 40
71 47
72 38
73 28
74 29
75 28
76 22
77 21
78 25
79 26
80 19
81 16
82 12
83 16
84 14
85 11
86 17
87 13
88 10
89 12
90 18
91 16
92 16
93 17
94 12
95 8
96 9
97 9
98 11
99 12
100 5
101 8
102 4
103 11
104 5
105 9
106 7
107 4
108 8
109+ 99
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Overview

What is he best known for?

The fields of study he is best known for:

  • Agronomy
  • Agriculture
  • Ecology

His main research concerns Agronomy, Weed control, Weed, Tillage and Crop rotation. Agronomy is represented through his Crop, Canola, Crop yield, Bromus tectorum and Field experiment research. The concepts of his Weed control study are interwoven with issues in Cover crop, Agroforestry, Fertilizer and Competition.

His Weed study combines topics in areas such as Cultivar, Sowing, Biomass, Descurainia sophia and Cropping system. Robert E. Blackshaw works mostly in the field of Tillage, limiting it down to topics relating to No-till farming and, in certain cases, Biomass, Plant density and Yield. His Crop rotation study combines topics from a wide range of disciplines, such as Field plot and Organic production.

His most cited work include:

  • Differential response of weed species to added nitrogen (220 citations)
  • Weed Dynamics and Management Strategies for Cropping Systems in the Northern Great Plains (193 citations)
  • Nitrogen fertilizer timing and application method affect weed growth and competition with spring wheat (125 citations)

What are the main themes of his work throughout his whole career to date?

Robert E. Blackshaw spends much of his time researching Agronomy, Weed control, Weed, Canola and Crop. Tillage, Crop yield, Brassica, Glyphosate and Crop rotation are the subjects of his Agronomy studies. His study in Tillage is interdisciplinary in nature, drawing from both Cover crop and Crop residue.

His work carried out in the field of Weed control brings together such families of science as Foxtail, Agroforestry, Avena fatua and Yield. His Weed research includes elements of Field experiment, Fertilizer, Competition, No-till farming and Poaceae. His study looks at the intersection of Canola and topics like Cultivar with Seeding.

He most often published in these fields:

  • Agronomy (88.79%)
  • Weed control (39.91%)
  • Weed (36.77%)

What were the highlights of his more recent work (between 2013-2021)?

  • Agronomy (88.79%)
  • Canola (29.60%)
  • Cover crop (13.00%)

In recent papers he was focusing on the following fields of study:

His primary areas of study are Agronomy, Canola, Cover crop, Crop and Crop rotation. Tillage, Sugar beet, Weed, Glyphosate and Crop yield are the core of his Agronomy study. His study in Weed is interdisciplinary in nature, drawing from both Perennial plant, Field experiment and Acetolactate synthase.

His Canola research includes themes of Residual nitrogen, Cropping, Glufosinate, Field pea and Brassica. In general Crop study, his work on Winter cereal often relates to the realm of Snow cover, thereby connecting several areas of interest. The various areas that he examines in his Crop rotation study include Silage, Soil conservation and Cropping system.

Between 2013 and 2021, his most popular works were:

  • Experimental Methods for Crop–Weed Competition Studies (69 citations)
  • Legumes can reduce economic optimum nitrogen rates and increase yields in a wheat–canola cropping sequence in western Canada (48 citations)
  • Rotational Effects of Legumes and Non-Legumes on Hybrid Canola and Malting Barley (42 citations)

In his most recent research, the most cited papers focused on:

  • Agronomy
  • Agriculture
  • Ecology

Robert E. Blackshaw mainly investigates Agronomy, Canola, Crop rotation, Green manure and Field pea. His research in Agronomy intersects with topics in Rhizosphere and Bulk soil. His Canola research integrates issues from Crop, Crop yield, Brassica, No-till farming and Rapeseed.

His Green manure research is multidisciplinary, incorporating perspectives in Legume and Fertilizer. His research investigates the connection between Fertilizer and topics such as Hordeum vulgare that intersect with issues in Soil classification. His Weed research focuses on subjects like Acetolactate synthase, which are linked to Pesticide toxicity, Pesticide and Environmental impact assessment.

Best Publications

  • Differential response of weed species to added nitrogen

    Robert E. Blackshaw;Randall N. Brandt;H. Henry Janzen;Toby Entz

  • Weed Dynamics and Management Strategies for Cropping Systems in the Northern Great Plains

    Doug A. Derksen;Randy L. Anderson;Robert E. Blackshaw;Bruce Maxwell

  • Experimental Methods for Crop–Weed Competition Studies

    Clarence J. Swanton;Roger Nkoa;Robert E. Blackshaw

  • Nitrogen fertilizer timing and application method affect weed growth and competition with spring wheat

    Robert E. Blackshaw;Louis J. Molnar;H. Henry Janzen

  • Cover crops and weed management.

    J. R. Teasdale;L. O. Brandsæter;A. Calegari;F. Skora Neto

  • Reduced herbicide doses in field crops: A review

    Robert E. Blackshaw;John T. O'donovan;K. Neil Harker;George W. Clayton

  • Nitrogen Fertilizer Rate Effects on Weed Competitiveness is Species Dependent

    Robert E. Blackshaw;Randall N. Brandt

  • Seeding rate, herbicide timing and competitive hybrids contribute to integrated weed management in canola (Brassica napus)

    K. N. Harker;G. W. Clayton;R. E. Blackshaw;J. T. O’Donovan

  • Yellow sweetclover, green manure, and its residues effectively suppress weeds during fallow

    Robert E. Blackshaw;James R. Moyer;Ray C. Doram;A. Lyle Boswell

  • Weed seed viability in composted beef cattle feedlot manure.

    Francis J. Larney;Robert E. Blackshaw

  • Differential competitive ability of winter wheat cultivars against downy brome

    Robert E. Blackshaw

  • Weed management in conservation tillage systems for wheat production in North and South America

    J.R. Moyer;E.S. Roman;C.W. Lindwall;R.E. Blackshaw

  • Fertilizer, manure and compost effects on weed growth and competition with winter wheat in western Canada

    R.E. Blackshaw;L.J. Molnar;F.J. Larney

  • Effect of ensiling and rumen digestion by cattle on weed seed viability

    Robert E. Blackshaw;Lyle M. Rode

  • Tillage intensity and crop rotation affect weed community dynamics in a winter wheat cropping system

    R. E. Blackshaw;F. J. Larney;C. W. Lindwall;P. R. Watson

  • Ongoing Development of Integrated Weed Management Systems on the Canadian Prairies

    Robert E. Blackshaw;K. Neil Harker;John T. O'Donovan;Hugh J. Beckie

  • Crop Rotation and Tillage Effects on Weed Populations on the Semi-Arid Canadian Prairies

    Unknown

  • Legumes can reduce economic optimum nitrogen rates and increase yields in a wheat–canola cropping sequence in western Canada

    Mervin St. Luce;Cynthia A. Grant;Bernie J. Zebarth;Noura Ziadi

  • Influence of wild radish on yield and quality of canola

    Robert E. Blackshaw;Deirdre Lemerle;Rodney Mailer;Ken R. Young

  • Fertilizer application method affects nitrogen uptake in weeds and wheat

    Robert E. Blackshaw;Gregory Semach;H. Henry Janzen

  • Integrated approaches to managing weeds in spring-sown crops in western Canada

    J.T. O’Donovan;R.E. Blackshaw;K.N. Harker;G.W. Clayton

Frequent Co-Authors

John T. O'Donovan
John T. O'Donovan Agriculture and Agriculture-Food Canada
K. Neil Harker
K. Neil Harker Agriculture and Agriculture-Food Canada
George W. Clayton
George W. Clayton Agriculture and Agriculture-Food Canada
Eric N. Johnson
Eric N. Johnson University of Saskatchewan
Newton Z. Lupwayi
Newton Z. Lupwayi Agriculture and Agriculture-Food Canada
Yantai Gan
Yantai Gan Agriculture and Agriculture-Food Canada
Francis J. Larney
Francis J. Larney Agriculture and Agriculture-Food Canada
Hugh J. Beckie
Hugh J. Beckie University of Western Australia
Cynthia A. Grant
Cynthia A. Grant Agriculture and Agriculture-Food Canada
William E. May
William E. May Agriculture and Agri-Food Canada

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