World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

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

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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