World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
43
Citations
5553
World Ranking
3321
National Ranking
834

Philip Westra 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 Philip Westra 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: 136 publications — 50th percentile

50% of scientists in this discipline score the same or lower.

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

Philip Westra 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 Philip Westra 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: 43 D-Index — 52nd percentile

52% 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:

  • Botany
  • Gene
  • Ecology

His scientific interests lie mostly in Glyphosate, Botany, Agronomy, Gene and Genetics. He has included themes like Pesticide resistance and Weed in his Glyphosate study. His Weed study combines topics in areas such as Biometeorology, Integrated pest management, Forestry, Tiller and Seedling.

His biological study spans a wide range of topics, including Pesticide, Amaranth and Horticulture. The study incorporates disciplines such as Economic threshold and Competition in addition to Agronomy. His research in Scoparia intersects with topics in Dicamba, Allele, Locus and Genomic organization.

His most cited work include:

  • Gene amplification confers glyphosate resistance in Amaranthus palmeri (465 citations)
  • STABILITY OF CORN (ZEA MAYS)-VELVETLEAF (ABUTILON THEOPHRASTI) INTERFERENCE RELATIONSHIPS (122 citations)
  • New techniques and findings in the study of a candidate allelochemical implicated in invasion success (102 citations)

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

Philip Westra mostly deals with Agronomy, Weed, Botany, Glyphosate and Weed control. His work on Agronomy is being expanded to include thematically relevant topics such as Competition. The Weed study combines topics in areas such as Dicamba, Crop yield and Integrated pest management.

His Botany research incorporates elements of Amplified fragment length polymorphism, Horticulture and Amaranth. He combines subjects such as Bassia scoparia, Genetics, Chromosomal translocation, Resistance and Scoparia with his study of Glyphosate. His studies deal with areas such as Glufosinate and Amaranthus tuberculatus as well as Amaranthus palmeri.

He most often published in these fields:

  • Agronomy (54.55%)
  • Weed (28.10%)
  • Botany (20.66%)

What were the highlights of his more recent work (between 2016-2021)?

  • Chromosomal translocation (9.92%)
  • Gene (11.57%)
  • Weed (28.10%)

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

His primary scientific interests are in Chromosomal translocation, Gene, Weed, Genetics and Glyphosate. His work carried out in the field of Chromosomal translocation brings together such families of science as Molecular biology, Auxin, Botany and Amaranth. His Botany study combines topics from a wide range of disciplines, such as Pyruvate carboxylase and Crop.

He has researched Weed in several fields, including Weed control and Allele. His study on Weed control is covered under Agronomy. The concepts of his Glyphosate study are interwoven with issues in Phenotype, Resistance and Horticulture.

Between 2016 and 2021, his most popular works were:

  • Cross-resistance to dicamba, 2,4-D, and fluroxypyr in Kochia scoparia is endowed by a mutation in an AUX/IAA gene. (39 citations)
  • Metabolism of 2,4-dichlorophenoxyacetic acid contributes to resistance in a common waterhemp (Amaranthus tuberculatus) population. (35 citations)
  • The power and potential of genomics in weed biology and management (31 citations)

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

  • Botany
  • Ecology
  • Gene

Auxin, Botany, Chromosomal translocation, 2,4-Dichlorophenoxyacetic acid and Weed are his primary areas of study. His work deals with themes such as Dicamba and Bassia scoparia, which intersect with Auxin. His Dicamba research includes themes of Arabidopsis thaliana, Molecular biology and Scoparia.

His Chromosomal translocation research is multidisciplinary, relying on both Tyrosine, Physiology and Aromatic amino acids. His 2,4-Dichlorophenoxyacetic acid study incorporates themes from Fluroxypyr, Malathion, Cytochrome P450 and Amaranthus tuberculatus. His Weed research includes themes of Environmental planning, Identification and Genomics.

Best Publications

  • Gene amplification confers glyphosate resistance in Amaranthus palmeri

    Todd A. Gaines;Wenli Zhang;Dafu Wang;Bekir Bukun

  • STABILITY OF CORN (ZEA MAYS)-VELVETLEAF (ABUTILON THEOPHRASTI) INTERFERENCE RELATIONSHIPS

    John L. Lindquist;David A. Mortensen;Sharon A. Clay;Richard Schmenk

  • New techniques and findings in the study of a candidate allelochemical implicated in invasion success

    Amy C. Blair;Bradley D. Hanson;Galen R. Brunk;Robin A. Marrs

  • Gene amplification of 5-enol-pyruvylshikimate-3-phosphate synthase in glyphosate-resistant Kochia scoparia.

    Andrew T. Wiersma;Todd A. Gaines;Christopher Preston;John P. Hamilton

  • Mechanism of resistance of evolved glyphosate-resistant Palmer amaranth (Amaranthus palmeri).

    Todd A. Gaines;Dale L. Shaner;Sarah M. Ward;Jan E. Leach

  • Tandem Amplification of a Chromosomal Segment Harboring 5-Enolpyruvylshikimate-3-Phosphate Synthase Locus Confers Glyphosate Resistance in Kochia scoparia

    Mithila Jugulam;Kindsey Niehues;Amar S. Godar;Dal-Hoe Koo

  • Interspecific hybridization transfers a previously unknown glyphosate resistance mechanism in Amaranthus species.

    Todd A. Gaines;Sarah M. Ward;Bekir Bukun;Christopher Preston

  • GROWTH ANALYSIS OF SULFONYLUREA-RESISTANT AND -SUSCEPTIBLE KOCHIA (KOCHIA SCOPARIA)

    P.J. Christoffoleti;P. Westra;F. Iii. Moore

  • Impact of Genetic Background in Fitness Cost Studies: An Example from Glyphosate-Resistant Palmer Amaranth

    Darci Giacomini;Philip Westra;Sarah M. Ward

  • Why Early Season Weed Control Is Important in Maize

    Eric R. Page;Diego Cerrudo;Philip Westra;Mark Loux

  • Reactive oxygen species trigger the fast action of glufosinate

    Hudson K. Takano;Roland Beffa;Christopher Preston;Philip Westra

  • Stability of corn ( Zea mays )- foxtail ( Setaria spp.) interference relationships

    John L. Lindquist;David A. Mortensen;Philip Westra;W. J. Lambert

  • Characterization of glyphosate resistance in Amaranthus tuberculatus populations.

    Lothar Lorentz;Todd A Gaines;Scott J Nissen;Philip Westra

  • Cross-resistance to dicamba, 2,4-D, and fluroxypyr in Kochia scoparia is endowed by a mutation in an AUX/IAA gene.

    Sherry LeClere;Chenxi Wu;Philip Westra;R. Douglas Sammons

  • Inheritance of Resistance to The Auxinic Herbicide Dicamba in Kochia (Kochia scoparia)

    Christopher Preston;David S. Belles;Philip H. Westra;Scott J. Nissen

  • Metabolism of 2,4-dichlorophenoxyacetic acid contributes to resistance in a common waterhemp (Amaranthus tuberculatus) population.

    Marcelo R. A. Figueiredo;Lacy J. Leibhart;Zachary J. Reicher;Patrick J. Tranel

  • The Draft Genome of Kochia scoparia and the Mechanism of Glyphosate Resistance via Transposon-Mediated EPSPS Tandem Gene Duplication

    Eric L Patterson;Eric L Patterson;Christopher A Saski;Daniel B Sloan;Patrick J Tranel

  • Identification of genetic elements associated with EPSPs gene amplification.

    Todd A. Gaines;Todd A. Gaines;Alice A. Wright;William T. Molin;Lothar Lorentz

  • The power and potential of genomics in weed biology and management

    Karl Ravet;Eric L. Patterson;Hansjörg Krähmer;Kateřina Hamouzová

  • A new approach to determine when to control weeds.

    Antonio Berti;Claudio Dunan;Maurizio Sattin;Giuseppe Zanin

  • Site-to-site and year-to-year variation in Triticum aestivum-Aegilops cylindrica interference relationships

    Marie Jasieniuk;Bruce D. Maxwell;Randy L. Anderson;John O. Evans

  • Inheritance of Evolved Glyphosate Resistance in a North Carolina Palmer Amaranth (Amaranthus palmeri) Biotype

    Aman Chandi;Susana R. Milla-Lewis;Darci Giacomini;Philip Westra

  • Secale cereale interference and economic thresholds in winter Triticum aestivum

    Todd A. Pester;Philip Westra;Randy L. Anderson;Drew J. Lyon

  • Vapor Movement of Synthetic Auxin Herbicides: Aminocyclopyrachlor, Aminocyclopyrachlor-Methyl Ester, Dicamba, and Aminopyralid

    Stephen D. Strachan;Mark S. Casini;Kathleen M. Heldreth;Joseph A. Scocas

  • Absorption and Translocation of Aminocyclopyrachlor and Aminocyclopyrachlor-Methyl Ester in Canada Thistle (Cirsium arvense)

    Bekir Bukun;R. Bradley Lindenmayer;Scott J. Nissen;Philip Westra

  • Wild Proso Millet (Panicum miliaceum) Interference in Corn (Zea mays)

    Robert G. Wilson;Philip Westra

  • Glyphosate-Induced Weed Shifts in Glyphosate-Resistant Corn or a Rotation of Glyphosate-Resistant Corn, Sugarbeet, and Spring Wheat

    Robert G. Wilson;Stephen D. Miller;Philip Westra;Andrew R. Kniss

  • Absorption, translocation, and metabolism of imazamox in jointed goatgrass and feral rye

    Todd A. Pester;Scott J. Nissen;Philip Westra

  • Genetic diversity of jointed goatgrass (Aegilops cylindrica) determined with RAPD and AFLP markers

    Todd A. Pester;Sarah M. Ward;Ann L. Fenwick;Philip Westra

  • Field bindweed (Convolvulus arvensis) control with various herbicide combinations.

    Philip Westra;Philip Chapman;Phillip W. Stahlman;Stephen D. Miller

  • Interdisciplinary Irrigated Precision Farming Research

    D F. Heermann;Jennifer A. Hoeting;Sandra Thompson;H R. Duke

Frequent Co-Authors

Todd A. Gaines
Todd A. Gaines Colorado State University
Christopher Preston
Christopher Preston University of Adelaide
Dale L. Shaner
Dale L. Shaner Agricultural Research Service
Franck E. Dayan
Franck E. Dayan Colorado State University
Phillip W. Stahlman
Phillip W. Stahlman Kansas State University
Scott D. Haley
Scott D. Haley Colorado State University
Frank B. Peairs
Frank B. Peairs Colorado State University
Patrick J. Tranel
Patrick J. Tranel University of Illinois at Urbana-Champaign
Patrick F. Byrne
Patrick F. Byrne Colorado State University
Jan E. Leach
Jan E. Leach Colorado State University

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