World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
61
Citations
11294
World Ranking
1169
National Ranking
45

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.

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 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.

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.

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.

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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