College of Agricultural Sciences Personnel Profile
Personnel Photo of Philip  Westra
Philip Westra
Professor
Bioagricultural Sciences and Pest Management
College of Agricultural Sciences

Weed Research Laboratory Building, Room
Phone:
970-491-5219
Education:
  • Ph D, U OF MINNESOTA; AGRONMY
  • Other, CALVIN COLLEGE; SCND ED
  • Other, U OF WISCONSIN; PHILOS
Personal Website:
http://

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Haley, SD, Lazar, MD, Quick, JS, Johnson, JJ, Peterson, GL, Stromberger, JA, Clayshulte, SR, , Clifford, BL, Pester, TA, Nissen, SJ, others, , andJ. B. Rudolph. 2003. Above winter wheat Can. J. Plant Sci 83 107--108

Peairs, FB, Rudolph, JB, Westra, PH, Bioagricultural Sciences and Pest Management Dep Colorado State Univ., Fort Collins, CO 80523

Liu, Herbicide Concentration Shu Hua, , Campbell, Robert A, Studens, John A, Wagner, Robert G, Starke, Triflusulfuron Robert J, Renner, Karen A, Penner, Donald, Roggenbuck, Frank C, Westra, Philip, EXI? IE

KARAM, D, Westra, Philip, NISSEN, SJ, Ward, Sarah M, Genetic diversity among wild and domestic proso millet (Panicum miliaceum) biotypes..

Westra, Phil, VanGessel, Mark, IDENTIFY, ADAPT, AND TRANSFER A COST-EFFECTIVE METHOD OF ASSESSING WEED POPULATIONS IN CORN: User to Model and Model to User

Dionigi, P, Enloe, Steven, Holt, Jodie S, Hufbauer, Ruth A, Kriticos, Darren, Lyons, Kelly G, Madsen, John D, Nissen, Scott J, Prather, Timothy S, Randall, John A, others, , Recognition of Reviewers and Associate Editors

Cardina, Christopher P Dionigi, Enloe, Steven, Holt, Jodie S, Hufbauer, Ruth A, Kriticos, Darren, Lyons, Kelly G, Madsen, John D, Nissen, Scott J, Prather, Timothy S, Randall, John A, others, , Recognition of Reviewers and Associate Editors

CHRISTOFFOLETI, PJ, VASSIOS, J, NICOLAI, M, Nissen, Scott J, Westra, Philip, Shaner, Dale L, MELO, MSC, RESIST\^ENCIA DE CAPIM AMARGOSO (Digitaria insularis) AO GLYPHOSATE EM DOIS EST\'ADIOS FENOL\'OGICOS DE CRESCIMENTO ATRAV\'ES DE CURVAS DE DOSE RESPOSTA

Russell, MH, Padgette, SR, , Pantone, DJ, Parker, R, Parrish, DJ, Patterson, DT, Patterson, MG, Peeden, GF, Penner, D, Peterson, DE, others, , Roeth, FW, 567

Karam, D, Westra, Philip, Nissen, SJ, Ward, SM, Figueiredo, JEF, Signatura: BR0504815.

Christoffoleti, PJ, Westra, Philip, Signatura: BR9504440.

Brown, Jack, Byrne, Patrick F, Dahmer, Mark, Ellsworth, Peter, Harrington, Judy, Henry, Brien, Mallory-Smith, Carol, Nissen, Scott J, Peairs, Frank B, Pester, Todd, others, , Western regional work group on IPM consequences of herbicide tolerant (HT) and insect resistant (IR) crops (2004-2007)

Figueiredo, Marcelo, Dayan, Franck E, Tranel, Patrick, Nissen, Scott J, Westra, Philip, Bernards, Mark, Kruger, Greg, Jugulam, Mithila, Gaines, Todd, (2018) "2, 4-D metabolic resistance occurs via a P450-mediated hydroxylation reaction in waterhemp (Amaranthus tuberculatus)" 256

Pettinga, Dean Jacob, Ou, Junjun, Patterson, Eric, Jugulam, Mithila, Westra, Philip, Gaines, Todd, (2018) Back Cover: Cover Image, Volume 74, Issue 10 Pest Management Science 74 10 ii--ii

Van Horn, Christopher R, Moretti, Marcelo L, Robertson, Renae R, Segobye, Kabelo, Weller, Stephen C, Young, Bryan G, Johnson, William G, Schulz, Burkhard, Green, Amanda C, Jeffery, Taylor, others, , (2018) Cover Image, Volume 74, Issue 5 Pest Management Science 74 5 i--i

LeClere, Sherry, Wu, Chenxi, Westra, Philip, Sammons, R Douglas, (2018) Cross-resistance to dicamba, 2, 4-D, and fluroxypyr in Kochia scoparia is endowed by a mutation in an AUX/IAA gene Proceedings of the National Academy of Sciences 201712372

Busi, Roberto, Goggin, Danica E, Heap, Ian M, Horak, Michael J, Jugulam, Mithila, Masters, Robert A, Napier, Richard M, Riar, Dilpreet S, Satchivi, Norbert M, Torra, Joel, others, , (2018) Front Cover: Cover Image, Volume 74, Issue 10 Pest Management Science 74 10 i--i

Moretti, Marcelo L, Van Horn, Christopher R, Robertson, Renae, Segobye, Kabelo, Weller, Stephen C, Young, Bryan G, Johnson, William G, Douglas Sammons, R, Wang, Dafu, Ge, Xia, others, , (2018) Glyphosate resistance in Ambrosia trifida: Part 2. Rapid response physiology and non-target-site resistance Pest management science 74 5 1079--1088

Pettinga, Dean Jacob, Ou, Junjun, Patterson, Eric, Jugulam, Mithila, Westra, Philip, Gaines, Todd, (2018) Increased chalcone synthase (CHS) expression is associated with dicamba resistance in Kochia scoparia Pest management science 74 10 2306--2315

Figueiredo, Marcelo RA, Leibhart, Lacy J, Reicher, Zachary J, Tranel, Patrick J, Nissen, Scott J, Westra, Philip, Bernards, Mark L, Kruger, Greg R, Gaines, Todd, Jugulam, Mithila, (2018) Metabolism of 2, 4-dichlorophenoxyacetic acid contributes to resistance in a common waterhemp (Amaranthus tuberculatus) population Pest management science 74 10 2356--2362

LeClere, Sherry, Wu, Chenxi, Westra, Philip, Sammons, R Douglas, (2018) PNAS Plus Significance Statements PNAS 115 13 3207--3209

Ravet, Karl, Patterson, Eric, Kr\"ahmer, Hansj\"org, , Hamouzov\'a, Kate\vrina, , Fan, Longjiang, Jasieniuk, Marie, Lawton-Rauh, Amy, Malone, Jenna M, McElroy, J Scott, Merotto, Jr, Aldo, others, , (2018) The power and potential of genomics in weed biology and management Pest management science

Van Horn, Christopher R, Gaines, Todd, Ravet, Karl, Patterson, Eric, Beffa, R, Gille, S, Westra, Philip, (2018) "Transcriptomic analysis of Ambrosia trifida response to glyphosate: Overlap of cell death pathways between herbicide resistance and pathogen defense?" 108 10

Busi, Roberto, Goggin, Danica E, Heap, Ian M, Horak, Michael J, Jugulam, Mithila, Masters, Robert A, Napier, Richard M, Riar, Dilpreet S, Satchivi, Norbert M, Torra, Joel, others, , (2018) Weed resistance to synthetic auxin herbicides Pest management science 74 10 2265--2276

Van Horn, Christopher R, Moretti, Marcelo L, Robertson, Renae R, Segobye, Kabelo, Weller, Stephen C, Young, Bryan G, Johnson, William G, Schulz, Burkhard, Green, Amanda C, Jeffery, Taylor, Westra, Philip, (2017) Glyphosate resistance in Ambrosia trifida: Part 1. Novel rapid cell death response to glyphosate Pest Management Science

Moretti, Marcelo L, Van Horn, Christopher R, Robertson, Renae, Segobye, Kabelo, Weller, Stephen C, Young, Bryan G, Johnson, William G, Douglas Sammons, R, Wang, Dafu, Ge, Xia, d’Avignon, D. A., Gaines, Todd, Westra, Philip, Green, A., Jeffery, T., Lesperance, M., Tardif, F., Sikkema, P., Hall, J Christopher, McLean, M., Lawton, M., Schulz, Burkhard, (2017) Glyphosate resistance in Ambrosia trifida: Part 2. Rapid response physiology and non‐target‐site resistance Pest Management Science

Suryanto, Priyono, Sulistyaningsih, Endang, Putra, Eka Tarwaca Susila, Kastono, Dody, Alam, Taufan, Indonesia, Statistics, Suryanto, P, Prianto, SD, Suwignyo, B, Putra, ETS, others, , (2017) Impact of climate change on weeds in the rice-wheat cropping system. Asian Journal of Crop Science 9 3 153--159

Pettinga, Dean Jacob, Ou, Junjun, Patterson, Eric, Jugulam, Mithila, Westra, Philip, Gaines, Todd, (2017) Increased Chalcone Synthase (CHS) expression is associated with dicamba resistance in Kochia scoparia Pest management science

Sebastian, Derek J, Nissen, Scott J, Westra, Philip, Shaner, Dale L, Butters, Greg, (2017) Influence of soil properties and soil moisture on the efficacy of indaziflam and flumioxazin on Kochia scoparia L Pest management science 73 2 444-451

Dille, J. Anita, Stahlman, Phillip W., Du, Juan, Geier, Patrick W., Riffel, Jarrett D., Currie, Randall S., Wilson, Robert, Sbatella, Gustavo M., Westra, Philip, Kniss, Andrew R., Moechnig, Michael J., Cole, Richard M., (2017) Kochia (Kochia scoparia) Emergence Profiles and Seed Persistence across the Central Great Plains WEED SCIENCE 65 5 614-625

Figueiredo, Marcelo RA, Leibhart, Lacy J, Reicher, Zachary J, Tranel, Patrick J, Nissen, Scott J, Westra, Philip, Bernards, Mark L, Kruger, Greg R, Gaines, Todd, Jugulam, Mithila, (2017) Metabolism of 2, 4‐dichlorophenoxyacetic acid contributes to resistance in a common waterhemp (Amaranthus tuberculatus) population Pest management science

Johnson, Jerry J, Haley, Scott D, Jones, Sally, Asfeld, Edward, Meyer, Ronald F, Trujillo, Wilma, Kaan, Dennis A, Roesch, K., Larson, Kevin, Vigil, Merle F, Pettinger, Brett Terrill, Novak, Rick Allen, Peairs, Frank B, Broders, Kirk Dale, Byrne, Patrick F, Gaines, Todd, Westra, Philip, Walker, T., Erker, Brad, (2017) "TR17-4: Making Better Decisions, 2017 Colorado Winter Wheat Variety Performance Trials" Colorado Agricultural Experiment Station

Busi, Roberto, Goggin, Danica E, Heap, Ian, Horak, Michael J, Jugulam, Mithila, Masters, Robert A, Napier, Richard, Riar, Dilpreet S, Satchivi, Norbert M, Torra, Joel, Westra, Philip, (2017) Weed Resistance to Synthetic Auxin Herbicides Pest Management Science

Ostlie, Michael Hal, Haley, Scott D, Westra, Philip, Valdez, Victoria Ashley, (2017) "Acetyl co-enzyme A carboxylase herbicide resistant plants"

Gaines, Todd, Barker, Abigail Lynn, Patterson, Eric, Westra, Philip, Westra, Eric Philip, Wilson, Robert G., Jha, Prashant, Kumar, Vipan, Kniss, Andrew R., (2016) EPSPS gene copy number and whole-plant glyphosate resistance level in Kochia scoparia PLOS ONE 11 12 e0168295

Li, Zhenyi, Kessler, Kallie Christine, Figueiredo, Marcelo Rodrigues Alves de, , Nissen, Scott J, Gaines, Todd, Westra, Philip, Acker, Rene C. Van, Hall, Christopher, Robinson, Darren E., Soltani, Nader, Sikkema, Peter H., (2016) Halosulfuron absorption, translocation, and metabolism in white and adzuki bean Weed Science 64 4 705-711

Gaines, Todd, Barker, Abigail Lynn, Patterson, Eric, Westra, Philip, Westra, Eric Philip, Wilson, Robert, Kniss, Andrew R, (2016) Prediction of glyphosate resistance level based on EPSPS gene copy number in Kochia scoparia bioRxiv 047878

Sebastian, Derek J, Nissen, Scott J, Westra, Philip, Shaner, Dale, Butters, Gregory, (2016) Influence of Soil Properties and Soil Moisture on the Efficacy of Indaziflam and Flumioxazin on Kochia scoparia Pest Management Science

Ostlie, M., Haley, Scott D, Anderson, Victoria Ashley, Shaner, D., Manmathan, Harish Kumarimandhiram, Beil, Craig Thomas, Westra, Philip, (2015) Development and characterization of mutant winter wheat (Triticum aestivum L.) accessions resistant to the herbicide quizalofop Theoretical and Applied Genetics 128 2 343-351

Wiersma, A.T., Gaines, Todd, Preston, C., Hamilton, J.P., Giacomini, D., Buell, C Robin, Leach, Jan E, Westra, Philip, (2015) Gene amplification of 5-enol-pyruvylshikimate-3-phosphate synthase in glyphosate-resistant Kochia scoparia Planta 241 463-474

Nandula, Vijay K, Wright, Alice A, Van Horn, Christopher R, Molin, William T, Westra, Philip, Reddy, Krishna N, (2015) Glyphosate Resistance in Giant Ragweed (Ambrosia trifida L.) from Mississippi Is Partly Due to Reduced Translocation American Journal of Plant Sciences 6 13 2104-2113

Kumar, V., Jha, P., Giacomini, D., Westra, Eric Philip, Westra, Philip, (2015) Molecular Basis of Evolved Resistance to Glyphosate and Acetolactate Synthase-Inhibitor Herbicides in Kochia (Kochia scoparia) Accessions from Montana Weed Science 63 4 758-769

Ostlie, Mike, Haley, Scott D, Manmathan, Harish Kumarimandhiram, Westra, Philip, (2015) Development and characterization of mutant winter wheat (Triticum aestivum L.) accessions resistant to the herbicide quizalofop. Theoretical and Applied Genetics

Lorentz, L, Gaines, Todd, Nissen, Scott J, Westra, Philip, Strek, H., Dehne, H.W., Ruiz-Santaella, J. P., Beffa, R, (2014) Characterization of glyphosate resistance in Amaranthus tuberculatus populations Journal of Agricultural and Food Chemistry 62 8134-8142

Westra, Eric Philip, Shaner, Dale L, Westra, Philip, Chapman, Phillip Lee, (2014) Dissipation and leaching of pyroxasulfone and S-metolachlor Weed Technology 28 1 72--81

Giacomini, Darci, Wang, Dafu, Silva, Jillian, Tao, Nengbing, Westra, Phil, Sammons, Douglas, (2014) "Glyphosate resistance in Amaranthus palmeri involves multiple mechanisms" 248

Juglam, Mithla, Niehues, Kindsey, Godar, Amar, Wiersma, Andrew, Westra, Philip , (2014) Tandem Amplification of a Chromosomal Segment Harboring EPSPS Locus Confers Glyphosate Resistance in Kochia Scoparia Plant Physiology

Giacomini, Darci A, Westra, Philip, Ward, Sarah M, (2014) Impact of genetic background in fitness cost studies: an example from glyphosate-resistant Palmer amaranth Weed Science 62 29-37

Lindenmayer, R Bradley, Nissen, Scott J, Westra, Philip, Shaner, Dale L, Brunk, Galen R, (2013) Aminocyclopyrachlor absorption, translocation and metabolism in field bindweed (Convolvulus arvensis) Weed science 61 1 63--67

Lindenmayer, Richard B, Nissen, Scott J, Westra, Philip, Shaner, Dale L, Brunk, Galen R, (2013) Aminocyclopyrachlor absorption, translocation, and metabolism in field bindweed (Convolulus arvensis) Weed Sci 16 63-67

Graus, M, Allyson, S D, Fall, R, Yuan, B, Qian, Yaling, Westra, Philip, Gouw, J, Warneke, C, (2013) Biosphere-atmosphere exchange of volatile organic compounds over C4 biofuel crops Atmospheric Environment 66 161-168

Gaines, Todd, Wright, A.A., Molin, W.M., Lorentz, L., Riggins, C. W., Tranel, P. J., Beffa, R., Westra, Philip, Powles, S.B., (2013) Identification of genetic elements associated with EPSPS gene amplification PLOS One 8 6 e65819

Econopouly, Bethany F, McKay, John K, Westra, Philip, Reid, Scott D, Helm, Alan L, Byrne, Patrick F, (2013) Phenotypic diversity of Aegilops cylindrica (jointed goatgrass) accessions from the western United States under irrigated and dryland conditions Agriculture, ecosystems \& environment 164 244--251

Yerka, Melinda K, Wiersma, Andrew T, Lindenmayer, R Bradley, Westra, Philip, Johnson, William G, De Leon, Natalia, Stoltenberg, David E, (2013) Reduced translocation is associated with tolerance of common lambsquarters (Chenopodium album) to glyphosate Weed science 61 3 353--360

Johnson, Jerry J, Haley, Scott D, Jones, Sally Marie, Larson, Kevin, Bartolo, Michael E, Davidson, Jeffery William, Peairs, Frank B, Tisserat, Ned A, Westra, Philip, Davis, Jessica Gwyn, Novak, Rick Allen, Vigil, Merle, Mostek, Glenda, Bosley, Bruce, Meyer, Ron, Trujillo, Wilma, Irell, Ben, (2013) "Making better decisions: 2013 Colorado wheat variety performance trials." AES TR13-4 51

(2012) Inheritance of evolved glyphosate resistance in a North Carolina Palmer amaranth (Amaranthus palmeri) biotype Int J of Agronomy

Chandi, Aman, Milla-Lewis, Susana R, Giacomini, Darci, Westra, Philip, Preston, Christopher, Jordan, David L, York, Alan C, Burton, James D, Whitaker, Jared R, (2012) Inheritance of evolved glyphosate resistance in a North Carolina Palmer amaranth (Amaranthus palmeri) biotype International Journal of Agronomy 2012

(2012) Interspecific hybridization transfers a previously unknown glyphosate resistance mechanism in Amaranthus species Evolutionary Applications 5 1 29-38

Gaines, Todd, Ward, Sarah M, Bukun, B., Preston, C., Leach, Jan E, Westra, Philip, (2012) Interspecific hybridization transfers a previously unknown glyphosate resistance mechanism in Amaranthus species Evolutionary Applications 5 29-38

Dille, JA, Stahlman, PW, Geier, PW, Riffel, JD, Currie, RS, Wilson, RG, Sbatella, GM, Westra, Philip, Kniss, AR, Moechnig, MJ, others, , (2012) "Kochia emergence profiles across the central Great Plains" 52 122

(2012) Phenotypic diversity of Aegilops cylindrica (jointed goatgrass) accessions from the western United States under irrigated and dryland conditions Agriculture, Ecosystems, & Environment - online ahead of print

Haley, Scott D, Johnson, Jerry J, Westra, Phillip H, Peairs, Frank B, Stromberger, John A, Hudson, Emily E, Seifert, Scott A, Kottke, Rebecca, Valdez, Victoria A, Rudolph, Jeff B, others, , (2012) Registration of ‘Brawl CL Plus’ wheat Journal of Plant Registrations 6 3 306--310

Shaner, Dale L, Brunk, Galen R, Nissen, Scott J, Westra, Phil, Chen, Wenlin, (2012) Role of soil sorption and microbial degradation on dissipation of mesotrione in plant-available soil water Journal of environmental quality 41 1 170--178

(2012) Why Early Season Weed Control Is Important in Maize Weed Science: July-September 60 3 423-430

Page, Eric R, Cerrudo, Diego, Westra, Philip, Loux, Mark, Smith, Kenneth D, Foresman, Chuck, Wright, Harold David, Swanton, Clarence J, (2012) Why early season weed control is important in maize Weed Science 60 3 423--430

Gaines, Todd, Ward, Sarah M, Bukun, B, Preston, C, Leach, Jan E, Westra, Philip, (2012) Interspecific hybridization transfers a previously unknown glyphosate resistance mechanism in Amaranthus species. Evolutionary applications 5 1 29-38

(2011) Backcrossing provides an avenue for gene introgression from wheat to jointed goatgrass (Aegilops cylindrica) in the US Great Plains Weed Science 59 188-194

Econopouly, Bethany F, McKay, John K, Westra, Philip, Lapitan, Nora L V, Chapman, Phillip Lee, Byrne, Patrick F, (2011) Backcrossing Provides an Avenue for Gene Introgression from Wheat to Jointed Goatgrass (Aegilops cylindrica) in the US Great Plains Weed science 59 2 188–194

(2011) Biosphere-atmosphere exchange of volatile organic compounds over C4 biofuel crops Atmospheric Environment, available online

Graus, Martin, Eller, Allyson, Fall, Ray, Yuan, Bin, Qian, Yaling, Westra, Philip, de Gouw, Joost, Warneke, Carsten, (2011) "Comparison of VOC emissions from conventional and alternative biofuel crops" 242

Gaines, Todd, Ward, Sarah M, Bukun, Bekir, Preston, Christopher, Leach, Jan E, Westra, Philip, (2011) Data from: Interspecific hybridization transfers a previously unknown glyphosate resistance mechanism in Amaranthus species

(2011) Interspecific hybridization transfers a previously unknown glyphosate resistance mechanism in Amaranthus species Evolutionary Applications On-line publication

(2011) Mechanism of resistance of evolved glyphosate-resistant Palmer Amaranth (Amaranthus palmeri) J Agric Food Chem 59 5886-5889

Gaines, Todd, Shaner, D. L., Ward, Sarah M, Leach, Jan E, Preston, C., Westra, Philip, (2011) Mechanism of resistance of evolved glyphosate-resistant Palmer amaranth (Amaranthus palmeri) Journal of Agricultural and Food Chemistry 59 5886-5889

Graus, M, Warneke, C, Williams, EJ, Lerner, BM, Gilman, JB, Li, R, Eller, AS, Gray, Caroline Porter, Fierer, N, Fall, R, others, , (2011) "Trace Gas Exchange of Biofuel Crops"

Gaines, Todd, Shaner, D L, Ward, Sarah M, Leach, Jan E, Preston, C, Westra, Philip, (2011) Mechanism of resistance of evolved glyphosate-resistant Palmer amaranth (Amaranthus palmeri). Journal of agricultural and food chemistry 59 11 5886-9

(2010) Absorption and Translocation of Aminocyclopyrachlor and Aminocyclopyrachlor-Methyl Ester in Canada Thistle (Cirsium arvense) Weed Sci 58 96-102

Bukun, Bekir, Lindenmayer, R Bradley, Nissen, Scott J, Westra, Philip, Shaner, Dale L, Brunk, Galen R, (2010) Absorption and translocation of aminocyclopyrachlor and aminocyclopyrachlor-methyl ester in Canada thistle (Cirsium arvense) Weed science 58 2 96--102

Vassios, J, Nissen, Scott J, Douglass, C, Lindenmayer, B, Bridges, Melissa E, Westra, Philip, Lair, K, (2010) Canada thistle (Cirsium arvense) control and grass tolerance using aminopyralid and aminocyclopyrachlor Abstract O-222. Denver, CO: Weed Science Society of America

(2010) Comparison of the Interactions of Aminopyralid vs. Clopyralid with Soil Weed Science: October-December 58 4 473-477

Bukun, Bekir, Shaner, Dale L, Nissen, Scott J, Westra, Philip, Brunk, Galen R, (2010) Comparison of the interactions of aminopyralid vs. clopyralid with soil Weed science 58 4 473--477

Lindenmayer, B, Westra, Philip, Brunk, Galen R, Nissen, Scott J, Shaner, Dale L, (2010) Field and laboratory studies with aminocyclopyrachlor (DPX-MAT28) Abstract O-281. Denver, CO: Weed Science Society of America

(2010) Gene amplification confers glyphosate resistance in Amaranthus palmeri P Natl Acad Sci USA 107 1029-1034

Gaines, Todd, Zhang, W., Wang, D., Bukun, B., Chisholm, Stephen T, Shaner, D. L., Nissen, Scott J, Patzoldt, W. L., Tranel, P. J., Culpepper, A. S., Grey, T. L., Webster, T. M., Vencill, W. K., Sammons, R. D., Jiang, J.M., Preston, C., Leach, Jan E, Westra, Philip, (2010) Gene amplification confers glyphosate resistance in Amaranthus palmeri Proceedings of the National Academy of Sciences of the United States of America 107 3 1029-1034

Westra, Philip, Lindenmayer, B, Nissen, Scott J, Shaner, Dale L, D’Amato, T, Goeman, B, (2010) Integrating aminocyclopyrachlor into weed management plans Abstract O-304. Denver, CO: Weed Science Society of America

Harrington, Judith Eileen, Byrne, Patrick F, Peairs, Frank B, Nissen, Scott J, Westra, Philip, Ellsworth, Peter C, Fournier, Al, Mallory-Smith, Carol A, Zemetra, Robert S, Henry, W Brien, (2010) Perceived consequences of herbicide-tolerant and insect-resistant crops on integrated pest management strategies in the western United States: Results of an online survey AgBioForum

(2010) Vapor Movement of Synthetic Auxin Herbicides Weed Sci 58 103-108

Strachan, Stephen D, Casini, Mark S, Heldreth, Kathleen M, Scocas, Joseph A, Nissen, Scott J, Bukun, Bekir, Lindenmayer, R Bradley, Shaner, Dale L, Westra, Philip, Brunk, Galen R, (2010) Vapor movement of synthetic auxin herbicides: aminocyclopyrachlor, aminocyclopyrachlor-methyl ester, dicamba, and aminopyralid Weed science 58 2 103--108

Gaines, Todd, Zhang, W, Wang, D, Bukun, B, Chisholm, Stephen T, Shaner, D L, Nissen, Scott J, Patzoldt, W L, Tranel, P J, Culpepper, A S, Grey, T L, Webster, T M, Vencill, W K, Sammons, R D, Jiang, J, Preston, C, Leach, Jan E, Westra, Philip, (2010) Gene amplification confers glyphosate resistance in Amaranthus palmeri. Proceedings of the National Academy of Sciences of the United States of America 107 3 1029-34

(2009) Aminopyralid and Clopyralid Absorption and Translocation in Canada Thistle (Cirsium arvense) Weed Sci 57 15-Oct

Bukun, Bekir, Gaines, Todd, Nissen, Scott J, Westra, Philip, Brunk, Galen R, Shaner, Dale L, Sleugh, Byron B, Peterson, Vanelle F, (2009) Aminopyralid and clopyralid absorption and translocation in Canada thistle (Cirsium arvense) Weed Science 57 1 10-15

(2009) Are herbicide-resistant crops the answer to controlling Cuscuta? Pest Manag Sci 65 811-816

Currie, RS, Westra, Philip, Moechnig, M, (2009) Effect of Hail and Glyphosate-Resistant Volunteer Corn in Irrigated Corn Report of progress

(2009) Inheritance of Resistance to the Auxinic Herbicide Dicamba in Kochia (Kochia scoparia) Weed Sci 57 43-47

Preston, Christopher, Belles, David S, Westra, Philip, Nissen, Scott J, Ward, Sarah M, (2009) Inheritance of resistance to the auxinic herbicide dicamba in kochia (Kochia scoparia) Weed Science 57 1 43--47

Westra, Philip, Nissen, Scott J, Shaner, Dale L, Lindenmayer, B, Brunk, Galen R, (2009) Invasive weed management with aminocyclopyrachlor in the central great plains Proceedings of the Weed Science Society of America. Orlando, FL

(2009) Registration of 'Thunder CL' Wheat J Plant Regist 3 181-184

Haley, Scott D, Johnson, Jerry J, Westra, Phillip H, Peairs, Frank B, Stromberger, John A, Heaton, Emily E, Seifert, Scott A, Kottke, Rebecca, Rudolph, Jeff B, Bai, Guihua, others, , (2009) Registration of ‘Thunder CL’wheat Journal of plant registrations 3 2 181--184

Lindenmayer, B, Westra, Philip, Brunk, R, (2009) "Soil interactions with DPX-KJM44 and DPX-MAT28" 62 515

(2009) The Effects of Surfactants, Nozzle Types, Spray Volumes, and Simulated Rain on 1-Methylcyclopropene Efficacy on Tomato Plants Hortscience 44 1600-1603

MacKinnon, Daniel K, Shaner, Dale L, Nissen, Scott J, Westra, Phil, (2009) The effects of surfactants, nozzle types, spray volumes, and simulated rain on 1-methylcyclopropene efficacy on tomato plants HortScience 44 6 1600--1603

Westra, Philip, Wilson, Robert, Edwards, Melissa, (2008) "Agronomic crop responses to KJM-44 herbicide" 61 62

Westra, Philip, Nissen, Scott J, Gaines, Todd, Bekun, B, Lindenmayer, B, Shaner, Dale L, (2008) "Aminocyclopyrachlor for invasive weed management and restoration grass safety in the central great plains" 63 203

Currie, Randall, Lee, Jim, Westra, Phillip, Fenderson, John, Tichota, Jeff, Mueller, Jeff, (2008) Economic Threshold of Volunteer Glyphosate-Resistant Corn in Irrigated Corn Report of progress

Byrne, Patrick F, Gaines, Todd, Westra, Philip, Henry, W B, Nissen, Scott J, Chapman, P, Harrington, Judith Eileen, (2008) "Estimating gene flow from wheat to wheat and wheat to jointed goatgrass (Aegilops cylindrica)" CSU Agricultural Experiment Station TB08-03

Bridges, Melissa E, Westra, Philip, Dewey, SA, Andersen, KA, others, , (2008) "Generating probability of invasive weed occurrence maps for aid in precision conservation."

Shaner, Dale L, Khosla, Raj, Westra, Phil, Helm, Alan, Bosley, Bruce, (2008) Have you noticed your atrazine application is not protecting your crop anymore From the ground up, agronomy news

(2008) Herbicide-resistance in the Amaranthaceae J Plant Dis Protect 48 41-44

(2008) Jointed goatgrass (Aegilops cylindrica) by imidazolinone-resistant wheat hybridization under field conditions Weed Sci 56 32-36

Gaines, Todd, Brien Henry, W, Byrne, Patrick F, Westra, Philip, Nissen, Scott J, Shaner, Dale L, (2008) Jointed goatgrass (Aegilops cylindrica) by imidazolinone-resistant wheat hybridization under field conditions Weed Science 56 1 32–36

Hufbauer, Ruth A, Blair, Amy C, Nissen, Scott J, Brunk, Galen R, Westra, Philip, Hanson, Bradley D, (2008) "OOS 24-3: Spotted knapweed and the mystery of the missing weapons of mass destruction"

(2008) Spatial Variability of Atrazine and Metolachlor Dissipation on Dryland No-tillage Crop Fields in Colorado J Environ Qual 37 2212-2220

Bridges, Melissa E, Henry, W Brien, Shaner, Dale L, Khosla, Rajiv, Westra, Phil, Reich, Robin M, (2008) Spatial variability of atrazine and metolachlor dissipation on dryland no-tillage crop fields in Colorado Journal of environmental quality 37 6 2212--2220

(2008) Weed population dynamics after six years under glyphosate- and conventional herbicide-based weed control strategies Crop Sci 48 1170-1177

Westra, Philip, Wilson, Robert G, Miller, Stephen D, Stahlman, Phillip W, Wicks, Gail W, Chapman, Phillip L, Withrow, John, Legg, David, Alford, Craig, Gaines, Todd, (2008) Weed population dynamics after six years under glyphosate-and conventional herbicide-based weed control strategies Crop Science 48 3 1170-1177

(2007) Adventitious presence of herbicide resistant wheat in certified and farm-saved seed lots Crop Sci 47 751-756

Gaines, Todd, Preston, Christopher, Byrne, Patrick F, Henry, W Brien, Westra, Philip, (2007) Adventitious presence of herbicide resistant wheat in certified and farm-saved seed lots Crop Science 47 2 751–754

(2007) An empirically derived model of field-scale gene flow in winter wheat Crop Sci 47 2308-2316

Gaines, Todd, Byrne, Patrick F, Westra, Philip, Nissen, Scott J, Henry, W Brien, Shaner, Dale L, Chapman, Phillip Lee, (2007) An empirically derived model of field-scale gene flow in winter wheat Crop Science 47 6 2308–2316

(2007) Canada thistle (Cirsium arvense) control with aminopyralid in range, pasture, and noncrop areas Weed Technol 21 890-894

Enloe, Stephen F, Lym, Rodney G, Wilson, Robert, Westra, Phil, Nissen, Scott J, Beck, George, Moechnig, Michael, Peterson, Vanelle, Masters, Robert A, Halstvedt, Mary, (2007) Canada thistle (Cirsium arvense) control with aminopyralid in range, pasture, and noncrop areas Weed Technology 21 4 890--894

(2007) Glyphosate susceptibility in common lambsquarters (Chenopodium album) is influenced by parental exposure Weed Sci 55 572-577

Kniss, Andrew R, Miller, Stephen D, Westra, Philip, Wilson, Robert, (2007) Glyphosate susceptibility in common lambsquarters (Chenopodium album) is influenced by parental exposure Weed science 55 6 572--577

Wilson, Robert, Miller, Stephen D, Westra, Philip, Kniss, Andrew R, Stahlman, Phillip W, Wicks, Gail W, Kachman, Stephen D, (2007) Glyphosate-induced weed shifts in glyphosate-resistant corn or a rotation of glyphosate-resistant corn, sugarbeet, and spring wheat Weed Technology 21 4 900--909

(2007) Recovery of imidazolinone-resistant hard red wheat lines following imazamox application Crop Sci 47 2058-2066

Hanson, Bradley D, Fandrich, Lynn, Shaner, Dale L, Westra, Philip, Nissen, Scott J, (2007) Recovery of imidazolinone-resistant hard red wheat lines following imazamox application Crop science 47 5 2058--2066

Wiles, Lori J, Bobbitt, R, Westra, Philip, (2007) Site-specific Weed management in growers’ fields: predictions from hand drawn maps Applications of GIS for agriculture 1 81--101

Bridges, Melissa E, Henry, W Brien, Khosla, Raj, Shaner, DL, Westra, Philip, Reich, Robin M, (2007) Spatial Variability of Atrazine and Metolachlor Dissipation on Dryland No-Tillage Crop Fields.

(2006) AMADS increases the efficacy of glyphosate formulations on corn Weed Technol 20 179-183

Shaner, Dale L, Westra, Phil, Nissen, Scott J, (2006) AMADS increases the efficacy of glyphosate formulations on corn Weed technology 20 1 179--183

Karam, D\'ecio, , Westra, Philip, Niessen, Scott J, Ward, Sarah M, Figueiredo, Jos\'e Edson Fontes, , (2006) Assessment of silver-stained AFLP markers for studying DNA polymorphism in proso millet (Panicum miliaceum L.) Brazilian Journal of Botany 29 4 609--615

Preston, Christopher, Shaner, Dale L, Westra, PH, Culpepper, A Stanley, , Grey, TL, Vencill, William K, Wakelin, AM, Watts, JH, Crossman, ND, (2006) "Can a shikimate assay be used to determine the genotype of glyphosate resistant plants for population genetic studies" 511--514

(2006) Comparison of efficacy, absorption and translocation of three glyphosate formulations on velvetleaf (Abutilon theophrasti) Pest Manag Sci 62 1177-1181

Belles, David, Shaner, Dale L, Westra, Phil, Brunk, Galen R, (2006) Comparison of efficacy, absorption and translocation of three glyphosate formulations on velvetleaf (Abutilon theophrasti) Pest Management Science: formerly Pesticide Science 62 12 1177--1181

(2006) Ethylene effect on kochia (Kochia scoparia) and emission following dicamba application Weed Sci 54 31-37

Howatt, Kirk A, Westra, Philip, Nissen, Scott J, (2006) Ethylene effect on kochia (Kochia scoparia) and emission following dicamba application Weed science 54 1 31--37

Gaines, Todd, Byrne, Pat, Westra, Phil, Nissen, Scott J, Henry, Brien, Shaner, Dale L, Chapman, Phil, (2006) Gene Flow in Wheat and Jointed Goatgrass at the Landscape Level.

Bridges, Melissa E, Khosla, Rajiv, Shaner, Dale L, Henry, Brien, Westra, Phil, (2006) Productivity Level Management Zones on Residue Covered No-Tillage Dryland Crop Fields.

(2006) Registration of 'Bond CL' wheat Crop Sci 46 993-995

(2006) Registration of 'protection' wheat Crop Sci 46 995-996

Balint-Kurti, PJ, Blanco, M, Millard, M, Duvick, S, Holland, J, Clements, M, Holley, R, Carson, ML, Goodman, MM, (2006) Registration of 20 GEM maize breeding germplasm lines adapted to the southern USA Crop science 46 2 996--998

Haley, SD, Johnson, JJ, Peairs, FB, Quick, JS, Westra, PH, Stromberger, JA, Clayshulte, SR, , Clifford, BL, Rudolph, JB, Giura, A, others, , (2006) Registration of ‘Bond CL’wheat Crop science 46 2 993--995

(2006) Response of selected hard red wheat lines to Imazamox as affected by number and location of resistance genes, parental background, and growth habit Crop Sci 46 1206-1211

Hanson, Bradley D, Shaner, Dale L, Westra, Philip, Nissen, Scott J, (2006) Response of selected hard red wheat lines to imazamox as affected by number and location of resistance genes, parental background, and growth habit Crop science 46 3 1206--1211

(2006) Soil dissipation and biological activity of metolachlor and S-metolachlor in five soils Pest Manag Sci 62 617-623

Shaner, Dale L, Brunk, Galen R, Belles, David, Westra, Phil, Nissen, Scott J, (2006) Soil dissipation and biological activity of metolachlor and S-metolachlor in five soils Pest Management Science: formerly Pesticide Science 62 7 617--623

Gaines, Todd, Byrne, Patrick F, Westra, Phil, Nissen, Scott J, Henry, W Brien, Hanson, Brad, Belles, David, Shaner, Dale L, (2005) Estimating Landscape Level Gene Flow in Wheat and Jointed Goatgrass. Parameters 1 1.6 1--8

Zemetra, Robert, Brown, Jack, Byrne, Patrick F, Harrington, Judy, Nissen, Scott J, Peairs, Frank B, Westra, Phil, Riera-Lizarazu, Oscar, Mallory-Smith, Carol, Ellsworth, Peter, (2005) Integrated Pest Management for Herbicide Tolerant and Insect Resistant Crops: Assessing Information and Research Needs.

(2005) New techniques and findings in the study of a candidate allelochemical implicated in invasion success Ecol Lett 8 1039-1047

Blair, Amy C, Hanson, Bradley D, Brunk, Galen R, Marrs, Robin A, Westra, Philip, Nissen, Scott J, Hufbauer, Ruth A, (2005) New techniques and findings in the study of a candidate allelochemical implicated in invasion success Ecology Letters 8 10 1039--1047

Wilson, RG, Miller, SD, Kniss, AR, Westra, Philip, Stahlman, PW, (2005) "Risk of weed spectrum shifts and herbicide resistance in irrigated Roundup-Ready cropping systems—a western Nebraska perspective after 8 years" 60 138

Farkhari, M, Naghavi, MR, Pyghambari, SA, Ahmad Khan, I, Awan, FS, Ahmad, A, Fu, Y, Iqbal, A, Cao, W, Hucl, P, others, , (2005) Uniformity of the Alpha Amylase Isozymes of Aegilops cylindrical Introduced into North America: Comparison with Ancestral Eurasian Accessions. Pakistan Journal of Biological Sciences 10 17 239--244

(2004) Combined effects of herbicides and Sphenoptera jugoslavica on diffuse knapweed (Centaurea diffusa) population dynamics Weed Sci 52 418-423

Wilson, Rob, Beck, K. George, Westra, Philip, (2004) Combined effects of herbicides and Sphenoptera jugoslavica on diffuse knapweed (Centaurea diffusa) population dynamics Weed science 52 3 418--423

(2004) Common lambsquarters (Chenopodium album) interference with corn across the northcentral United States Weed Sci 52 1034-1038

Fischer, David W, Harvey, R Gordon, Bauman, Thomas T, Phillips, Sam, Hart, Stephen E, Johnson, Gregg A, Kells, James J, Westra, Philip, Lindquist, John, (2004) Common lambsquarters (Chenopodium album) interference with corn across the northcentral United States Weed science 52 6 1034--1038

Karam, D, Westra, Philip, Nissen, SJ, Ward, SM, Figueiredo, JEF, (2004) Genetic diversity among proso millet (Panicum miliaceum) biotypes assessed by AFLP technique Planta daninha 22 2 167--174

(2003) Above winter wheat Can J Plant Sci 83 107-108

Haley, SD, Lazar, MD, Quick, JS, Johnson, JJ, Peterson, GL, Stromberger, JA, Clayshulte, SR, , Clifford, BL, Pester, TA, Nissen, SJ, others, , (2003) Above winter wheat Canadian journal of plant science 83 1 107--108

(2003) AP502 CL winter wheat Can J Plant Sci 83 109-110

Lazar, MD, Haley, SD, Quick, JS, Johnson, JJ, Peterson, GL, Stromberger, JA, Clayshulte, SR, , Clifford, BL, Pester, TA, Nissen, SJ, others, , (2003) AP502 CL winter wheat Canadian journal of plant science 83 1 109--110

Bauder, Troy A, Waskom, Reagan M, Schneekloth, Joel, Alldredge, Jerry, (2003) Best management practices for Colorado corn Bulletin (Colorado State University. Cooperative Extension Service); XCM-574A

Karam, D, WARD, SM, Westra, Philip, NESSEN, SJ, FIGUEIREDO, JEF, (2003) Diversidade gen\'etica de plantas daninhas revelada por AFLP. I. Proso Millet (Panicum miliaceum, L.). Embrapa Milho e Sorgo. Comunicado t\'ecnico

(2003) Genetic diversity of jointed goatgrass (Aegilops cylindrica) determined with RAPD and AFLP markers Weed Sci 51 287-293

Pester, Todd A, Ward, Sarah M, Fenwick, Ann L, Westra, Philip, Nissen, Scott J, (2003) Genetic diversity of jointed goatgrass (Aegilops cylindrica) determined with RAPD and AFLP markers Weed Science 51 3 287--293

Westra, Philip, Nissen, Scott J, Shaner, Dale L, (2003) Herbicide performance during drought Crop series. Production; no. 0.567

Miller, SD, Stahlman, PW, Westra, Philip, Wicks, GW, Wilson, RG, Tichota, JM, (2003) "Risks of weed spectrum shifts and herbicide resistance in glyphosate-resistant cropping systems" 56 61--62

Westra, Philip, (2003) "The biological and chemical activity of different glyphosate formulations applied to velvetleaf and corn"

Johnson, Jerry J, Haley, Scott D, Westra, Philip, (2002) Clearfield* wheat Crop series. Production; no. 3.116

Westra, Philip, (2002) "Field studies with glyphosate formulations for weed control in diverse cropping systems"

(2002) Infestation and spatial dependence of weed seedling and mature weed populations in corn Weed Sci 50 54-63

Wyse-Pester, Dawn Y, Wiles, Lori J, Westra, Philip, (2002) Infestation and spatial dependence of weed seedling and mature weed populations in corn Weed science 50 1 54--63

Heermann, DF, Hoeting, Jennifer A, Thompson, SE, Duke, HR, Westfall, DG, Buchleiter, GW, Westra, Philip, Peairs, FB, Fleming, Kevin Casey, (2002) Interdisciplinary irrigated precision farming research Precision agriculture 3 1 47–61

Wilson, RG, Miller, Steven D, Westra, Philip, (2002) "Risks of weed spectrum shifts and herbicide resistance in glyphosate tolerant cropping systems" 57 174

(2002) The potential for mapping nematode distributions for site-specific management J Nematol 34 80-87

Wyse-Pester, Dawn Y, Wiles, Lori J, Westra, Philip, (2002) The potential for mapping nematode distributions for site-specific management Journal of nematology 34 2 80

(2001) Absorption and fate of BAY MKH 6561 in jointed goatgrass and downy brome Weed Sci 49 717-722

Fandrich, Lynn, McDonald, Sandra K, Nissen, Scott J, Westra, Philip, Santel, Hans J, (2001) Absorption and fate of BAY MKH 6561 in jointed goatgrass and downy brome Weed science 49 6 717--722

(2001) Absorption, translocation, and metabolism of imazamox in jointed goatgrass and feral rye Weed Sci 49 607-612

Pester, Todd A, Nissen, Scott J, Westra, Philip, (2001) Absorption, translocation, and metabolism of imazamox in jointed goatgrass and feral rye Weed Science 49 5 607--612

(2001) Evaluation of models predicting winter wheat yield as a function of winter wheat and jointed goatgrass densities Weed Sci 49 48-60

Jasieniuk, Marie, Maxwell, Bruce D, Anderson, Randy L, Evans, John O, Lyon, Drew J, Miller, Stephen D, Morishita, Don W, Ogg, Alex G, Seefeldt, Steven S, Stahlman, Phillip W, others, , (2001) Evaluation of models predicting winter wheat yield as a function of winter wheat and jointed goatgrass densities Weed Science 49 1 48--60

Fandrich, L, McDonald, S, Nissen, Scott J, Westra, Philip, (2000) "Absorption and fate of BAY MKH 6561 by downy brome and jointed goatgrass" 53 34--34

KARAM, D, Westra, Philip, NISSEN, SJ, (2000) "Biological studies of wild proso millet biotypes (Panicum miliaceum L.).."

Belles, DS, Westra, Philip, Nissen, SJ, Carrithers, V, (2000) "Control of Six Kochia Accessions at Three Growth Stages with Fluroxypyr and Dicamba" 53 71--71

Trucco, Federico, Wiles, Lori J, Westra, Philip, (2000) "DEVELOPMENT OF ORGANIC MATTER MANAGEMENT ZONES FOR MORE EFFICIENT APPLICATION OF HERBICIDES."

D Amato, T, Westra, Philip, (2000) "Dry Bean and Sugarbeet Growth in Colorado Soils Treated Previously with Balance" 53 72--72

Pester, TA, Westra, Philip, Nissen, SJ, (2000) "Genetic Diversity of Jointed Goatgrass (Aegilops cylindrica) Using DNA Fingerprinting Techniques" 53 15--15

Heermann, DF, Hoeting, Jennifer A, Duke, HR, Westfall, DG, Buchleiter, GW, Westra, Philip, Peairs, FB, Fleming, Kevin Casey, (2000) "Irrigated precision farming for corn production" 10–12

Heermann, DF, Duke, HR, Buchleiter, GW, Westfall, DG, Fleming, Kevin Casey, Bosley, BD, Westra, Philip, Peairs, FB, others, , (2000) "Multidisciplinary study of irrigated precision farming." 1--17

Westra, Philip, Wyse-Pester, D, Wiles, Lori J, (2000) "Precision Farming Tools Help Evaluate Spatial Distribution of Corn Pests" 53 93--93

Westra, Philip, Nissen, Scott J, Karam, D, (2000) "Risk factors that impact resistant weed selection."

(2000) Secale cereale interference and economic thresholds in winter Triticum aestivum Weed Sci 48 720-727

Pester, Todd A, Westra, Philip, Anderson, Randy L, Lyon, Drew J, Miller, Stephen D, Stahlman, Phillip W, Northam, Francis E, Wicks, Gail A, (2000) Secale cereale interference and economic thresholds in winter Triticum aestivum Weed Science 48 6 720--727

Vissotto, SL, Westra, Philip, Nissen, SJ, (2000) "Sulfonylureas Affecting Rotational Crops" 53 93--93

(2000) The seedbank dynamics of feral rye (Secale cereale) Weed Technol 14 14-Jul

Stump, William L, Westra, Philip, (2000) The seedbank dynamics of feral rye (Secale cereale) Weed Technology 14 1 7--14

Wilson, Robert, Beck, KG, Westra, Philip, (2000) "Using Herbicides in Combination with Sphenoptera jugoslavica to Improve the Root Beetle's Control of Diffuse Knapweed" 53 48--48

Miller, Jason W, Westra, Philip, Nissen, Scott J, (2000) "Weed Population Dynamics in Irrigated Crops Utilizing Various Weed Management Systems" 53 72--72

KARAM, D, Westra, Philip, NISSEN, SJ, (2000) "Wild proso millet (Panicum miliaceum L.) growth and competition.."

(1999) A plant process economic model for weed management decisions in irrigated onion J Am Soc Hortic Sci 124 99-105

Dunan, Claudio M, Westra, Philip, Moore, Frank D, (1999) A plant process economic model for weed management decisions in irrigated onion Journal of the American Society for Horticultural Science 124 1 99--105

Brunk, Galen R, Fandrich, L, Kazarian, D, Miller, Patrick Allen, Nissen, Scott J, Westra, Philip, (1999) "Absorption and fate of dimethenamid in pinto, black and navy beans" 52 101--101

(1999) Absorption, fate, and soil activity of quinclorac in field bindweed (Convolvulus arvensis) Weed Sci 47 136-142

Enloe, Stephen F, Nissen, Scott J, Westra, Philip, (1999) Absorption, fate, and soil activity of quinclorac in field bindweed (Convolvulus arvensis) Weed science 136--142

Wyse-Pester, DY, Westra, Philip, Wiles, LJ, (1999) "Characterizing the Spatial Distribution of Crop Pests for the Development of Optimal Sampling Plans and Management Units" 52 99--99

Karam, D, Westra, Philip, Nissen, SJ, (1999) "Control of Wild Proso Millet Biotypes with Different Herbicides under Greenhouse Conditions" 52 11--11

Kazarian, D, Miller, Patrick Allen, Nissen, Scott J, Westra, Philip, (1999) "Dry Edible Bean Response to Shoot and Foliar Applications of Dimethenamid, BAS 656, and Metolachlor" 52 23--23

Westra, Philip, (1999) "Effects of individual cultural practices on jointed goatgrass management"

Karam, D, Westra, Philip, Nissen, SJ, (1999) "Germination and Early Growth of Wild and Cultivated Proso Millet Biotyopes" 52 100--100

Pester, TA, Westra, Philip, Anderson, RL, Stahlman, PW, Wicks, GA, Lyon, DJ, Miller, SD, (1999) "Integrated management systems for jointed goatgrass in the central great"

Oman, CC, Westra, Philip, Nissen, Scott J, Gonzales, J, (1999) "Integrating Fluroxypyr into Western US Cropping Systems" 52 114--114

Heermann, DF, Hoeting, Jennifer A, Duke, HR, Westfall, DG, Buckleiter, GW, Westra, Philip, Peairs, FB, Fleming, KL, (1999) Interdisciplinary irrigated precision farming team research Precision agriculture 99 212--230

(1999) Precision farming Weed Sci 48 1777-1783

Fleming, Kim L, Westfall, Dwayne G, Heermann, Dale F, Bosley, D Bruce, Peairs, Frank B, Westra, Philip, (1999) Precision Farming: From Technology to Decisions A Case Study Precision Agriculture precisionagric4b 1777--1783

Vissotto, SL, Westra, Philip, Nissen, SJ, (1999) "Proso Millet Dose Responses to MON 37500" 52 104--104

Howatt, KA, Westra, Philip, Nissen, SJ, Foster, JG, (1999) "Response of two kochia accessions to pre-and post-emergent applications of dicamba" 52 129--129

(1999) Site-to-site and year-to-year variation in Triticum aestivum-Aegilops cylindrica interference relationships Weed Sci 47 529-537

Jasieniuk, Marie, Maxwell, Bruce D, Anderson, Randy L, Evans, John O, Lyon, Drew J, Miller, Stephen D, Morishita, Don W, Ogg, Jr, Alex G, Seefeldt, Steven, Stahlman, Phillip W, others, , (1999) Site-to-site and year-to-year variation in Triticum aestivum-Aegilops cylindrica interference relationships Weed science 529--537

(1999) Sorption, dissipation, and leaching of metsulfuron in Colorado soils Weed Sci 47 353-359

Cranmer, Brian K, Westra, Philip, Zimdahl, Robert L, (1999) Sorption, dissipation, and leaching of metsulfuron in Colorado soils Weed science 353--359

Wyse-Pester, D, Westra, Philip, Wiles, LJ, (1999) "Spatial sampling and analysis of crop pests in a center pivot corn field" 485--494

(1999) Spatial sampling for crop pests in two center pivot irrigated fields Weed Sci 48 511-522

(1999) Stability of corn (Zea mays)-foxtail (Setaria spp) interference relationships Weed Sci 47 195-200

Lindquist, John L, Mortensen, David A, Westra, Philip, Lambert, WJ, Bauman, Thomas T, Fausey, Jason C, Kells, James J, Langton, Steven J, Harvey, R Gordon, Bussler, Brett H, others, , (1999) Stability of corn (Zea mays)-foxtail (Setaria spp.) interference relationships Weed Science 195--200

(1999) The influence of surfactant and nitrogen on foliar absorption of MON 37500 Weed Sci 47 270-274

Miller, Patrick Allen, Westra, Philip, Nissen, Scott J, (1999) The influence of surfactant and nitrogen on foliar absorption of MON 37500 Weed science 270--274

Wilson, Robert, Beck, KG, Westra, Philip, (1999) "The Interaction of Picloram and Clopyralid with Sphenoptera Jugoslavica on Diffuse Knapweed Population Dynamics" 52 41--41

Wiles, LJ, Westra, Philip, (1999) "The spatial distribution of weed seed banks in two pivot-irrigated corn fields" 52 19--19

Enloe, Stephen F, Westra, Philip, Nissen, Scott J, Miller, Stephen D, Stahlman, Phillip W, (1999) Use of quinclorac plus 2, 4-D for controlling field bindweed (Convolvulus arvensis) in fallow Weed technology 13 4 731--736

(1999) Use of quinclorac plus 2,4-D for controlling field bindweed (Convolvulus arvensis) in fallow Weed Technol 13 731-736

Pester, TA, Westra, Philip, D'Amato, TJ, Howart, KA, Anderson, RL, Stahlman, PW, Wicks, GA, Lyon, DJ, Miller, SD, (1998) "Analysis of volunteer rye economic thresholds in winter wheat" 51 110--110

(1998) Comparative growth and development of four spurred anoda (Anoda cristata) accessions Weed Sci 46 91-98

VanGessel, Mark J, Schroeder, Jill, Westra, Philip, (1998) Comparative growth and development of four spurred anoda (Anoda cristata) accessions Weed science 91--98

Miller, Patrick Allen, Westra, Philip, (1998) Herbicide behavior in soils Crop series. Production; no. 0.562

Miller, Patrick Allen, Westra, Philip, (1998) "How surfactants work, no. 0.564. Colorado State University Cooperative Extension, Crop Fact Sheet"

(1998) Impact of timing and frequency of in-row cultivation for weed control in dry bean (Phaseolus vulgaris) Weed Technol 12 548-553

Vangessel, Mark J, Schweizer, Edward E, Wilson, Robert, Wiles, Lori J, Westra, Phil, (1998) Impact of timing and frequency of in-row cultivation for weed control in dry bean (Phaseolus vulgaris) Weed technology 548--553

Pedreros, A, Westra, Philip, (1998) "Lambsquarters (Chenopodium album) Interference in Grain Corn and Response to Herbicides" 51 108--108

Howatt, KA, Westra, Philip, Nissen, SJ, (1998) "Population Sampling to Monitor the Phenotypic Response of Kochia to Dicamba" 51 135--135

(1998) Seedbank and emerged annual weed populations in cornfields (Zea mays) in Colorado Weed Technol 12 243-247

Schweizer, Edward E, Westra, Philip, Lybecker, Donald W, (1998) Seedbank and emerged annual weed populations in cornfields (Zea mays) in Colorado Weed technology 243--247

Wyse-Pester, DY, Wiles, LJ, Westra, Philip, (1998) "Spatial Infestation of Weed Seedlings in Two Center Pivot Irrigated Fields" 51 44--44

Enloe, S, Nissen, Scott J, Westra, Philip, Foster, G, Ulstad, V, Sterling, R, Hardin, Janet G, (1998) "The Absorption, Translocation, Metabolism, and Soil Activity of Quinclorac in Field Bindweed (Convolvulus arvensis L.)" 51 133--133

Sepahvand, Pariya, Sajedi, Nurali, Mousavi, Seyed Karim, Ghiasvand, Mohsen, Anderson, RL, Tanaka, DL, Black, AL, Schweizer, EE, Blackshaw, RE, Brandt, RN, others, , (1998) The Concept and Application of the Critical Weed-Free Period. Pakistan Journal of Biological Sciences 17 4 531--536

(1998) The response of dodder (Cuscuta spp) seedlings to phytohormones under various light regimes Ann Appl Biol 132 331-338

Karam, D, Westra, Philip, Nissen, SJ, (1998) "Wild Proso Millet (Panicum miliaceum L.) Growth Analysis" 51 14--14

D'Amato, T, Johnson, Jerry J, Westra, Philip, (1998) "Winter Wheat Variety Response to Herbicide Treatments at Three Application Timings" 51 27--27

Westra, Philip, Kebede, Z, Beck, Georgeanne E, (1997) "Competition and Growth Analysis of Jointed Goatgrass Growing with a Tall and Short Winter Wheat Variety" 50 84--84

(1997) Control of sulfonylurea-resistant kochia (Kochia scoparia) Weed Technol 11 270-276

Tonks, Dennis J, Westra, Philip, (1997) Control of sulfonylurea-resistant kochia (Kochia scoparia) Weed technology 270--276

(1997) Economics and efficacy of postemergence spurred anoda (Anoda cristata) control in pinto beans (Phaseolus vulgaris) Weed Technol 11 329-334

Vangessel, Mark J, Westra, Phil, (1997) Economics and efficacy of postemergence spurred anoda (Anoda cristata) control in pinto beans (Phaseolus vulgaris) Weed Technology 329--334

(1997) Effects of light and mechanical stimulation on coiling and prehaustoria formation in Cuscuta spp Weed Res 37 219-228

Enloe, SF, Westra, Philip, Nissen, Scott J, (1997) "Evaluation of quinclorac for management of field bindweed in a wheat fallow rotation"

Miller, PA, Westra, Philip, Nissen, SJ, (1997) "Foliar absorption of MON 37500 in two brome species"

(1997) Growth analysis of sulfonylurea-resistant and -susceptible kochia (Kochia scoparia) Weed Sci 45 691-695

Christoffoleti, Pedro J, Westra, Philip, Moore, III, Frank, (1997) Growth analysis of sulfonylurea-resistant and-susceptible kochia (Kochia scoparia) Weed Science 691--695

Eberlein, CV, Westra, Philip, Haderlie, LC, Whitmore, JC, Guttieri, MJ, (1997) Herbicide drift and carryover injury in potatoes Pacific Northwest Extension Publ 498 15

Westra, Philip, (1997) "In the Field with Herbicide Resistant Crops: A Panel Discussion" 50 8--8

Pester, TA, Westra, Philip, D'Amato, TJ, Howatt, K, (1997) "Jointed Goatgrass Competition in Winter Wheat" 50 82--82

Pedreros, A, Westra, Philip, (1997) "Lambsquarter (Chenopodium album) Interference and Seed Production in Grain Corn" 50 61--61

Miller, PA, Westra, Philip, Nissen, SJ, (1997) "Rotational crop response to MON 37500, metsulfuron, prosulfuron, triasulfuron and tribenuron plus thifensulfuron"

(1997) The competitive ability of wheat (Triticum aestivum) compared to rigid ryegrass (Lolium rigidum) and cowcockle (Vaccaria hispanica) Weed Sci 45 481-487

Tanji, Abbes, Zimdahl, Robert L, Westra, Philip, (1997) The competitive ability of wheat (Triticum aestivum) compared to rigid ryegrass (Lolium rigidum) and cowcockle (Vaccaria hispanica) Weed science 481--487

(1996) A new approach to determine when to control weeds Weed Sci 44 496-503

Berti, Antonio, Dunan, Claudio, Sattin, Maurizio, Zanin, Giuseppe, Westra, Philip, (1996) A new approach to determine when to control weeds Weed Science 496--503

Miller, PA, Westra, Philip, (1996) "Influence of Soil Moisture and Chloroacetamide Herbicide on Wild Proso Millet (Panicum miliaceum L.) Control" 49 102--102

(1996) Integrated weed management systems for irrigated corn (Zea mays) production in Colorado - A case study Weed Sci 44 423-428

Vangessel, Mark J, Schweizer, Edward E, Lybecker, Donald W, Westra, Philip, (1996) Integrated weed management systems for irrigated corn (Zea mays) production in Colorado: a case study Weed science 423--428

Howatt, KA, Westra, Philip, (1996) "Interaction of Winter Annual Grasses and the Russian Wheat Aphid in Winter Wheat" 49 71--71

Westra, Philip, Howatt, K, D'Amato, T, Miller, SD, Maxwell, B, Evans, J, Morishita, D, (1996) "Jointed Goatgrass Economic Thresholds and Time of Planting Effects on Competition in Winter Wheat" 49 72--72

Westra, Philip, Nisson, S, D'Amato, T, Howatt, K, Foster, Jason W, (1996) "Kochia Response to PGR, SU, and Triazine Herbicides" 49 93--93

(1996) Modelling the effect of duration of weed competition, weed density and weed competitiveness on seeded, irrigated onion Weed Res 36 259-269

Dunan, CM, Westra, Philip, Moore, F, Chapman, Phillip Lee, (1996) Modelling the effect of duration of weed competition, weed density and weed competitiveness on seeded, irrigated onion Weed Research 36 3 259--269

Miller, PA, Westra, Philip, Nissen, SJ, (1996) "Soil Adsorption/Desorption Characterization for Chloroacetamide Herbicides" 49 102--102

(1996) Stability of corn (Zea mays) velvetleaf (Abutilon theophrasti) interference relationships Weed Sci 44 309-313

Lindquist, John L, Mortensen, David A, Clay, Sharon A, Schmenk, Richard, Kells, James J, Howatt, Kirk, Westra, Philip, (1996) Stability of corn (Zea mays)-velvetleaf (Abutilon theophrasti) interference relationships Weed Science 309--313

Enloe, SF, Westra, Philip, Nissen, Scott J, (1996) "Use of Quinclorac for Long Term Management of Field Bindweed" 49 78--78

(1996) Venice mallow (Hibiscus trionum) seed production and persistence in soil in Colorado Weed Technol 10 22-28

Westra, Philip, Pearson, Calvin H, Ristau, Randal, Schweissing, Frank C, (1996) Venice mallow (Hibiscus trionum) seed production and persistence in soil in Colorado Weed technology 10 1 22--28

D'Amato, T, Howatt, K, Westra, Philip, (1996) "Wheat Variety Response to Dicamba Applications" 49 74--74

Vangessel, Mark J, Schweizer, Edward E, Lybecker, Donald W, Westra, Phil, (1995) Compatibility and efficiency of in-row cultivation for weed management in corn (Zea mays) Weed technology 9 4 754--760

Vangessel, Mark J, Schweizer, Edward E, Garrett, Karen A, Westra, Philip, (1995) Influence of weed density and distribution on corn (Zea mays) yield Weed Science 43 2 215--218

(1995) Influence of Weed Density and Distribution on Corn (Zea-Mays) Yield Weed Sci 43 215-218

(1995) The Concept and Application of Early Economic Period Threshold - the Case of Dcpa in Onions (Allium-Cepa) Weed Sci 43 634-639

Dunan, Claudio M, Westra, Philip, Schweizer, Edward E, Lybecker, Donald W, Moore, Frank D, (1995) The concept and application of early economic period threshold: the case of DCPA in onions (Allium cepa) Weed Science 43 4 634--639

Vangessel, Mark J, Wiles, Lori J, Schweizer, Edward E, Westra, Phil, (1995) Weed control efficacy and pinto bean (Phaseolus vulgaris) tolerance to early season mechanical weeding Weed Technology 9 3 531--534

(1995) Weed-Control Efficacy and Pinto Bean (Phaseolus-Vulgaris) Tolerance to Early-Season Mechanical Weeding Weed Technol 9 531-534

(1994) A Plant Process-Economic Model for Wild Oats Management Decisions in Irrigated Barley Agr Syst 45 355-368

Dunan, CM, Moore, III, FD, Westra, Philip, (1994) A plant process-economic model for wild oats management decisions in irrigated barley Agricultural Systems 45 4 355--368

Christoffoleti, PJ, Westra, Philip, (1994) Competition effects with mixed stands of wheat and kochia (Kochia scoparia) biotypes resistant and susceptible to acetolactase synthase inhibitor herbicides Scientia Agricola 51 2 245--251

Schweizer, Edward E, Westra, Philip, Lybecker, Donald W, (1994) Controlling weeds in corn (Zea mays) rows with an in-row cultivator versus decisions made by a computer model Weed Science 42 4 593--600

(1994) Controlling Weeds in Corn (Zea-Mays) Rows with an in-Row Cultivator Versus Decisions Made by a Computer-Model Weed Sci 42 593-600

Lybecker, DW, Schweizer, EE, Westra, Philip, (1994) WEEDCAM Manual Fort Collins, CO: Colorado Sate University 49

Peairs, FB, Beck, KG, Brown, Jr, WM, Schwartz, HF, Vangessel, MJ, Westra, Philip, (1993) 1993 Colorado pesticide guide: field crops Bulletin (USA)

Schweizer, EE, Westra, Philip, Lybecker, DW, (1993) Alternative tillage systems vs a computer decision aid for controlling weeds within the corn row The Society

Schweizer, EE, Lybecker, DW, Wiles, LJ, Westra, Philip, (1993) Bioeconomic weed management models in crop production International Crop Science I internationalcr 103--107

VanGessel, MJ, Westra, Philip, D'Amato, T, (1993) Cole crop tolerance and weed control with pyridate Research progress report-Western Society of Weed Science (USA)

Lybecker, DW, Schweizer, EE, Westra, Philip, (1993) Computer decision aid for managing weeds in irrigated corn The Society

Ogg, Jr, AG, (1993) "Jointed goatgrass survey-1993. Magnitude and scope of the problem"

Wright, JL, Mallory-Smith, CA, Fay, PK, Thill, DC, Westra, Philip, Trunkle, PA, (1993) "The frequency of sulfonylurea herbicide resistant kochia (Kochia scoparia L. Schrad) in Colorado, Idaho, and Montana" 46 75

Christoffoleti, PJ, Westra, Philip, (1992) "Competition and coexistence of sulfonylurea resistant and susceptible kochia (Kochia scoparia) biotypes in unstable environments" 51

Westra, Philip, D'Amato, T, (1992) Dry bean response to imazethapyr and alachlor+ trifluralin Research progress report-Western Society of Weed Science (USA)

Westra, Philip, Chapman, Philip, Stahlman, Phillip W, Miller, Stephen D, Fay, Peter K, (1992) Field bindweed (Convolvulus arvensis) control with various herbicide combinations Weed Technology 6 4 949--955

(1992) Field Bindweed (Convolvulus-Arvensis) Control with Various Herbicide Combinations Weed Technol 6 949-955

Tonks, DJ, Westra, Philip, (1992) Kochia control in spring barley Research progress report-Western Society of Weed Science (USA)

(1992) Reducing Herbicide Loading in Corn with Weed Management Models Abstr Pap Am Chem S 203 310-ENVR

Lybecker, DW, Schweizer, EE, Westra, Philip, (1992) "Reducing Herbicide Loading in Corn with Weed Management Models" 203 310--ENVR

Westra, Philip, (1992) "Risks versus benefits relative to pesticide use in food production"

D'Amato, TD, Westra, Philip, (1992) Shattercane control in field corn Research progress report-Western Society of Weed Science (USA)

Westra, Philip, Stump, WL, (1992) Wild proso millet control with nicosulfuron Research progress report-Western Society of Weed Science (USA)

Lybecker, DW, Schweizer, EE, Westra, Philip, (1991) Computer aided decisions for weed management in corn Proc. West. Agric. Econ. Assoc., Portland, OR 234--239

Westra, Phil, Barton, Mike, (1991) Field Bindweed Management Between Small-Grain Crops With Tordon 22K Herbicide

SCHWEIZER, EDWARD E, Westra, Philip, (1991) Potential for weeds to develop resistance to sugarbeet herbicides in North America Journal of sugar beet research 28 1-2 1--22

Wilson, Robert, Westra, Philip, (1991) Wild proso millet (Panicum miliaceum) interference in corn (Zea mays) Weed Science 39 2 217--220

(1991) Wild Proso Millet (Panicum-Miliaceum) Interference in Corn (Zea-Mays) Weed Sci 39 217-220

Schwartz, HF, Westra, Philip, Cranshaw, Whitney S, (1990) Colorado onion IPM bulletin Bulletin-Cooperative Extension Service, Colorado State University (USA)

Westra, Philip, Pearson, Calvin H, Ristau, Randall, (1990) Control of Venice mallow (Hibiscus trionum) in corn (Zea mays) and onions (Allium cepa) Weed Technology 4 3 500--504

(1990) Control of Venice Mallow (Hibiscus-Trionum) in Corn (Zea-Mays) and Onions (Allium-Cepa) Weed Technol 4 500-504

Westra, Philip, Callan, M, (1990) Morphological and reproductive characteristics of fifteen wild proso millet (Panicum miliaceum) accessions from the United States and Canada Research progress report-Western Society of Weed Science (USA)

Sheaffer, CC, Wyse, DL, Marten, GC, Westra, PH, (1990) The potential of quackgrass for forage production Journal of Production Agriculture 3 2 256--259

Westra, Philip, Wilson, Robert, Zimdahl, Robert L, (1990) Wild-proso millet (Panicum miliaceum) control in Central Great Plains irrigated corn (Zea mays) Weed Technology 4 2 409--414

(1990) Wild-Proso Millet - Proceedings of a Symposium of the Weed-Science-Society-of-America February 9, 1989, Dallas, Texas Weed Technol 4 407-408

Westra, Philip, D'Amato, T, (1989) Barnyardgrass control in dry beans Research progress report-Western Society of Weed Science (USA)

Westra, Philip, D'Amato, T, (1989) Blue mustard and flixweed control in winter wheat Research progress report-Western Society of Weed Science (USA)

Westra, Philip, D'Amato, T, (1989) Downy brome control with diclofop methyl in winter wheat Research progress report-Western Society of Weed Science (USA)

Westra, Philip, D'Amato, T, (1989) Grass control in corn with several new herbicides Research progress report-Western Society of Weed Science (USA)

Westra, Philip, (1989) "Integrated jointed goatgrass (Aegilops cylindrica) control" 42 83--84

Westra, Philip, Schwartz, Howard F, (1989) ISSUES PERTAINING TO HERBICIDE INJURY ON DRY BEANS Proceedings-Annual Colorado Crop Protection Institute 43

Westra, Philip, D'Amato, T, (1989) Jointed goatgrass control with ethyl-metribuzin Research progress report-Western Society of Weed Science (USA)

Westra, Philip, Schwartz, Howard F, (1989) "Potential herbicide volatility and drift problems on dry beans" Colorado State University Cooperative Extension

Coulter, Linda D, Humburg, Neil E, Doing, How Is SARA, Harvey, Pamela L, Beck, K. George, Schuman, Stanley H, Davis, Sandra K, Walker, Lloyd R, May, Ralph F, Durnford, Deanna S, others, , (1989) TWENTIETH ANNUAL COLORADO CROP PROTECTION INSTITUTE PROCEEDINGS Marriott Hotel Fort Collins, Colorado November 8 and 9, 1990 Proceedings-Annual Colorado Crop Protection Institute 1

Westra, Philip, (1989) UPDATE ON 1989 HERBICIDE RESEARCH IN COLORADO Proceedings-Annual Colorado Crop Protection Institute 107

Westra, Philip, (1989) USING TISSUE CULTURE TO UNDERSTAND HERBICIDE PERFORMANCE Proceedings-Annual Colorado Crop Protection Institute 90

Westra, Philip, D'Amato, T, (1989) Weed control in quinoa (Chenopodium quinoa) Research progress report-Western Society of Weed Science (USA)

Khan, RU, Rashid, A, Aslam, M, Mirza, MS, Ghafoor, A, Chatha, MR, Khan, AR, Al-Yemeny, MN, Roth, CM, Shroyer, JP, others, , (1989) Weed Management in Oil Seed Crops. Pakistan Journal of Biological Sciences 7 2 1--5

Westra, Philip, D'Amato, T, (1988) Canada thistle control prior to planting winter wheat Research progress report-Western Society of Weed Science (USA)

Westra, Philip, D'Amato, T, (1988) Fallow bindweed control with picloram combinations Research progress report-Western Society of Weed Science (USA)

Westra, Philip, D'Amato, T, (1988) Grass control in onions with postemergence grass herbicides. Research progress report Western Society of Weed Science

McBride, Dean K, Peterson, Dallas E, Lamey, H Arthur, Loftis, Jim C, Peairs, Frank B, Schwartz, Howard F, Westra, Philip, Bohmont, Bert L, (1988) Persistence and mobility of pesticides in soil and water Bulletin (Colorado State University. Extension); XCM-132

Westra, Philip, Davis, Ted L, (1987) "Jointed goatgrass in winter wheat" Colorado State University Cooperative Extension Service

Westra, Philip, (1987) The effect of downy brome control with ethyl metribuzin and metribuzin on winter wheat yield Research progress report-Western Society of Weed Science (USA)

Aldrich, RG, Askew, SD, Wilcut, JW, Beckett, TH, Stoller, EW, Wax, LM, Bosnic, AC, Swanton, CJ, Conn, JS, Thomas, DL, others, , (1987) Wheat (Triticum aestivum) yield reduction from common milkweed (Asclepias syriaca) competition. Pakistan Journal of Biological Sciences 10 21 199--206

Westra, Philip, (1981) CONTROL OF QUACKGRASS (AGROPYRON REPENS) BIOTYPES WITH GLYPHOSATE.

Westra, PH, Wyse, DL, (1981) Growth and development of quackgrass (Agropyron repens) biotypes Weed science 44--52

Westra, Philip, Wyse, Donald L, Cook, Edwin F, (1981) Weevil (Notaris bimaculatus) feeding reduces effectiveness of glyphosate on quackgrass (Agropyron repens) Weed Science 540--547

Westra, Philip, Wyse, DL, others, , (1980) Glyphosate translocation in quackgrass biotypes. Glyphosate translocation in quackgrass biotypes. Volume 35 84--85

Westra, Philip, Wyse, DL, others, , (1980) Quackgrass control in soybeans with BAS 9052. Quackgrass control in soybeans with BAS 9052. 34

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