David H. Gent
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Publications of David H. Gent (83 listed):
Molecular Plant Pathology (2021) 22, 755-768
Savithri Purayannur, David H. Gent, Timothy D. Miles, Sebastjan Radisek and Lina M. Quesada-Ocampo (2021)
The hop downy mildew pathogen Pseudoperonospora humuli
Phytopathology (2021) 111, 194-203
William A. Weldon, Brian J. Knaus, Niklaus J. Grünwald, Joshua S. Havill, Mary H. Block, David H. Gent, Lance E. Cadle-Davidson and David M. Gadoury (2021)
Transcriptome-derived amplicon sequencing markers elucidate the U.S. Podosphaera macularis population structure across feral and commercial plantings of Humulus lupulus
Plant Disease (2021) 105, 965-971
Mary Block, Brian J. Knaus, Michele S. Wiseman, Niklaus J. Grünwald and David H. Gent (2021)
Development of a diagnostic assay for race differentiation of Podosphaera macularis
Environmental Entomology (2021) 50, 673-684
Joanna L. Woods, Anne E. Iskra and David H. Gent (2021)
Predicting damage to hop cones by Tetranychus urticae (Acari: Tetranychidae)
Phytopathology (2020) 110, 1105-1116
David H. Gent, Briana J. Claassen, David M. Gadoury, Niklaus J. Grünwald, Brian J. Knaus, Sebastjan Radisek, William Weldon, Michele S. Wiseman and Sierra N. Wolfenbarger (2020)
Population diversity and structure of Podosphaera macularis in the Pacific Northwestern United States and other populations
Plant Disease (2020) 104, 1400-1406
David H. Gent, Mary Block and Briana J. Claassen (2020)
High levels of insensitivity to phosphonate fungicides in Pseudoperonospora humuli
Environmental Entomology (2019) 48, 894-902
A.E. Iskra, J.L. Woods and D.H. Gent (2019)
Stability and resiliency of biological control of the twospotted spider mite (Acari: Tetranychidae) in hop
PLoS ONE (2019) 14 (6 - e0218569)
Tamieka Lee Pearce, Calum Rae Wilson, David Hugh Gent and Jason Barry Scott (2019)
Multiple mutations across the succinate dehydrogenase gene complex are associated with boscalid resistance in Didymella tanaceti in pyrethrum
Phytopathology (2019) 109, 74-83
David H. Gent, Walter F. Mahaffee, William W. Turechek, Cynthia M. Ocamb, Megan C. Twomey, Joanna L. Woods and Claudia Probst (2019)
Risk factors for bud perennation of Podosphaera macularis on hop
Phytopathology (2019) 109, 1720-1731
Jennifer Sherman, Jordan M. Burke and David H. Gent (2019)
Cooperation and coordination in plant disease management
Phytopathology (2019) 109, 1354-1366
A. Rahman, E. Góngora-Castillo, M.J. Bowman, K.L. Childs, D.H. Gent, F.N. Martin and L.M. Quesada-Ocampo (2019)
Genome sequencing and transcriptome analysis of the hop downy mildew pathogen Pseudoperonospora humuli reveal species-specific genes for molecular detection
Phytopathology (2019) 109, 1801-1810
David H. Gent, Nanci Adair, Brian J. Knaus and Niklaus J. Grünwald (2019)
Genotyping-by-sequencing reveals fine-scale differentiation in populations of Pseudoperonospora humuli
Phytopathology (2019) 109, 1392-1403
David H. Gent, Sharmodeep Bhattacharyya and Trevor Ruiz (2019)
Prediction of spread and regional development of hop powdery mildew: A network analysis
Phytopathology (2018) 108, 15-22
David H. Gent, Paul D. Esker and Alissa B. Kriss (2018)
Statistical power in plant pathology research
Plant Disease (2018) 102, 1316-1325
David H. Gent, Briana J. Claassen, Megan C. Twomey, Sierra N. Wolfenbarger and Joanna L. Woods (2018)
Susceptibility of hop crown buds to powdery mildew and its relation to perennation of Podosphaera macularis
Journal of Economic Entomology (2018) 111, 2499-2502
A.E. Iskra, J.L. Woods and D.H. Gent (2018)
Influence of nitrogen fertilizer rate on hop looper
Plant Disease (2017) 101, 1874-1884
Jason B. Scott, David H. Gent, Tamieka L. Pearce, Sarah J. Pethybridge, Stacey J. Pilkington and Frank S. Hay (2017)
Mycoflora associated with pyrethrum seed and the integration of seed steam treatment into foliar disease management strategies
Plant Disease (2017) 101, 874-881
David H. Gent, Stephen T. Massie, Megan C. Twomey and Sierra N. Wolfenbarger (2017)
Adaptation to partial resistance to powdery mildew in the hop cultivar Cascade by Podosphaera macularis
Euphytica (2017) 213 (3 - 98)
J.A. Henning, D.H. Gent, M.S. Townsend, J.L. Woods, S.T. Hill and D. Hendrix (2017)
QTL analysis of resistance to powdery mildew in hop (Humulus lupulus L.)
Plant Disease (2017) 101, p. 1323 (Claassen et al.)
B.J. Claassen, S.N. Wolfenbarger, J.S. Havill, A.M. Orshinsky and D.H. Gent (2017)
Infestation of hop seed (Humulus lupulus) by chasmothecia of the powdery mildew fungus, Podosphaera macularis
Plant Disease (2016) 100, 1599-1605
Claudia Probst, Mark E. Nelson, Gary G. Grove, Megan C. Twomey and David H. Gent (2016)
Hop powdery mildew control through alteration of spring pruning practices
Phytopathology (2016) 106, 1105-1116
S. Withers, E. Gongora-Castillo, D. Gent, A. Thomas, P.S. Ojiambo and L.M. Quesada-Ocampo (2016)
Using next-generation sequencing to develop molecular diagnostics for Pseudoperonospora cubensis, the cucurbit downy mildew pathogen
Plant Disease (2016) 100, p. 861 (Twomey et al.)
M.C. Twomey, J.K. Stone and D.H. Gent (2016)
Black wilt of hop (Humulus lupulus) caused by Diplodia seriata in New York State
Plant Disease (2016) 100, p. 1245 (Wolfenbarger et al.)
S.N. Wolfenbarger, L.M. Quesada-Ocampo and D.H. Gent (2016)
Powdery mildew caused by Podosphaera macularis on hop (Humulus lupulus) in North Carolina
Plant Disease (2016) 100, 1153-1160
David H. Gent, Claudia Probst, Mark E. Nelson, Gary G. Grove, Stephen T. Massie and Megan C. Twomey (2016)
Interaction of basal foliage removal and late-season fungicide applications in management of hop powdery mildew
Euphytica (2016) 208, 545-559
J.A. Henning, D.H. Gent, M.C. Twomey, M.S. Townsend, N.J. Pitra and P.D. Matthews (2016)
Genotyping-by-sequencing of a bi-parental mapping population segregating for downy mildew resistance in hop (Humulus lupulus L.)
Plant Disease (2016) 100, 1212-1221
Sierra N. Wolfenbarger, Stephen T. Massie, Cynthia Ocamb, Emily B. Eck, Gary G. Grove, Mark E. Nelson, Claudia Probst, Megan C. Twomey and David H. Gent (2016)
Distribution and characterization of Podosphaera macularis virulent on hop cultivars possessing R6-based resistance to powdery mildew
Canadian Journal of Plant Pathology (2015) 37, 315-330
Carly F. Summers, Nanci L. Adair, David H. Gent, Margaret T. McGrath and Christine D. Smart (2015)
Pseudoperonospora cubensis and P. humuli detection using species-specific probes and high definition melt curve analysis
Plant Pathology (2015) 64, 1094-1102
S.N. Wolfenbarger, M.C. Twomey, D.M. Gadoury, B.J. Knaus, N.J. Grünwald and D.H. Gent (2015)
Identification and distribution of mating-type idiomorphs in populations of Podosphaera macularis and development of chasmothecia of the fungus
Canadian Journal of Plant Pathology (2015) 37, 179-187
Thomas B. O'Malley, Frank S. Hay, Jason B. Scott, David H. Gent, Roger G. Shivas and Sarah J. Pethybridge (2015)
Carpogenic germination of sclerotia of Sclerotinia minor and ascosporic infection of pyrethrum flowers
PLoS ONE (2015) 10 (3 - e0120987)
Megan C. Twomey, Sierra N. Wolfenbarger, Joanna L. Woods and David H. Gent (2015)
Development of partial ontogenic resistance to powdery mildew in hop cones and its management implications
Plant Disease (2015) 99, 1227-1235
Frank S. Hay, David H. Gent, Stacey J. Pilkington, Tamieka L. Pearce, Jason B. Scott and Sarah J. Pethybridge (2015)
Changes in distribution and frequency of fungi associated with a foliar disease complex of pyrethrum in Australia
Annual Review of Phytopathology (2015) 53, 223-246
Peter S. Ojiambo, David H. Gent, Lina M. Quesada-Ocampo, Mary K. Hausbeck and Gerald J. Holmes (2015)
Epidemiology and population biology of Pseudoperonospora cubensis: A model system for management of downy mildews
Euphytica (2015) 202, 487-498
J.A. Henning, D.H. Gent, M.C. Twomey, M.S. Townsend, N.J. Pitra and P.D. Matthews (2015)
Precision QTL mapping of downy mildew resistance in hop (Humulus lupulus L.)
Plant Disease (2015) 99, 632-640
Mark E. Nelson, David H. Gent and Gary G. Grove (2015)
Meta-analysis reveals a critical period for management of powdery mildew on hop cones
PLoS ONE (2015) 10 (11 - e0143665)
Carly F. Summers, Colwyn M. Gulliford, Craig H. Carlson, Jacquelyn A. Lillis, Maryn O. Carlson, Lance Cadle-Davidson, David H. Gent and Christine D. Smart (2015)
Identification of genetic variation between obligate plant pathogens Pseudoperonospora cubensis and P. humuli using RNA sequencing and genotyping-by-sequencing
Plant Disease (2015) 99, 858-865
David H. Gent, Megan C. Twomey, Sierra N. Wolfenbarger and Joanna L. Woods (2015)
Pre- and postinfection activity of fungicides in control of hop downy mildew
Southwestern Entomologist (2014) 39, 691-704
H.F. Schwartz, D.H. Gent, S.M. Fichtner, K. Otto, C.O. Boateng, S. Szostek, W.S. Cranshaw and L.A. Mahaffey (2014)
Thrips tabaci (Thysanoptera: Thripidae) and Iris yellow spot virus associated with onion transplants, onion volunteers, and weeds in Colorado
Plant Disease (2014) 98, 1024-1035
Jennifer Sherman and David H. Gent (2014)
Concepts of sustainability, motivations for pest management approaches, and implications for communicating change
Plant Disease (2014) 98, 267-274
Jason B. Scott, David H. Gent, Sarah J. Pethybridge and Frank S. Hay (2014)
Spatiotemporal characterization of Sclerotinia crown rot epidemics in pyrethrum
Journal of Economic Entomology (2014) 107, 570-581
J.L. Woods, A.J. Dreves, D.G. James, J.C. Lee, D.B. Walsh and D.H. Gent (2014)
Development of biological control of Tetranychus urticae (Acari: Tetranychidae) and Phorodon humuli (Hemiptera: Aphididae) in Oregon hop yards
Plant Disease (2014) 98, 103-111
Jason B. Scott, David H. Gent, Sarah J. Pethybridge, Tim Groom and Frank S. Hay (2014)
Crop damage from Sclerotinia crown rot and risk factors in pyrethrum
Journal of Economic Entomology (2014) 107, 875-879
J.L. Woods and D.H. Gent (2014)
Suppression of hop looper (Lepidoptera: Noctuidae) by the fungicide pyraclostrobin
Plant Disease (2014) 98, p. 852 (Wolfenbarger et al.)
S.N. Wolfenbarger, E.B. Eck, C.M. Ocamb, C. Probst, M.E. Nelson, G.G. Grove and D.H. Gent (2014)
Powdery mildew outbreaks caused by Podosphaera macularis on hop cultivars possessing the resistance gene R6 in the Pacific northwestern United States
Plant Pathology (2014) 63, 625-639
D.H. Gent, G.G. Grove, M.E. Nelson, S.N. Wolfenbarger and J.L. Woods (2014)
Crop damage caused by powdery mildew on hop and its relationship to late season management
Annual Review of Phytopathology (2013) 51, 267-289
David H. Gent, Walter F. Mahaffee, Neil McRoberts and William F. Pfender (2013)
The use and role of predictive systems in disease management
Plant Disease (2013) 97, 1431-1437
Sarah J. Pethybridge, David H. Gent, Tim Groom and Frank S. Hay (2013)
Minimizing crop damage through understanding relationships between pyrethrum phenology and ray blight disease severity
Plant Disease (2012) 96, 1343-1351
David H. Gent, Mark E. Nelson, Gary G. Grove, Walter F. Mahaffee, William W. Turechek and Joanna L. Woods (2012)
Association of spring pruning practices with severity of powdery mildew and downy mildew on hop
Plant Disease (2012) 96, p. 583 (Kropf et al.)
S.M. Kropf, M.L. Putnam, M. Serdani, M.C. Twomey, J.L. Woods and D.H. Gent (2012)
Sclerotinia wilt of hop (Humulus lupulus) caused by Sclerotinia sclerotiorum in the Pacific Northwest United States
Plant Pathology (2012) 61, 37-47
D.H. Gent, J.L. Farnsworth and D.A. Johnson (2012)
Spatial analysis and incidence-density relationships for downy mildew on hop
Plant Disease (2012) 96, 726-736
W.F. Pfender, D.H. Gent and W.F. Mahaffee (2012)
Sensitivity of disease management decision aids to temperature input errors associated with sampling interval and out-of-canopy sensor placement
Environmental Entomology (2012) 41, 621-635
J.L. Woods, A.J. Dreves, G.C. Fisher, D.G. James, L.C. Wright and D.H. Gent (2012)
Population density and phenology of Tetranychus urticae (Acari: Tetranychidae) in hop is linked to the timing of sulfur applications
Phytopathology (2011) 101, 1112-1121
Sarah J. Pethybridge, David H. Gent and Frank S. Hay (2011)
Epidemics of ray blight on pyrethrum are linked to seed contamination and overwintering inoculum of Phoma ligulicola var. inoxydabilis
Plant Pathology (2011) 60, 1169-1182
S.J. Jones, D.H. Gent, S.J. Pethybridge and F.S. Hay (2011)
Spatial characteristics of white mould epidemics and the development of sequential sampling plans in Australian bean fields
Experimental and Applied Acarology (2011) 55, 401-416
J.L. Woods, D.G. James, J.C. Lee and D.H. Gent (2011)
Evaluation of airborne methyl salicylate for improved conservation biological control of two-spotted spider mite and hop aphid in Oregon hop yards
Euphytica (2011) 180, 411-420
John A. Henning, M. Shaun Townsend, David H. Gent, Nahla Bassil, Paul Matthews, Emily Buck and Ron Beatson (2011)
QTL mapping of powdery mildew susceptibility in hop (Humulus lupulus L.)
Phytopathology (2011) 101, 805-818
Melanie N. Mitchell, Cynthia M. Ocamb, Niklaus J. Grünwald, Leah E. Mancino and David H. Gent (2011)
Genetic and pathogenic relatedness of Pseudoperonospora cubensis and P. humuli
Plant Disease (2010) 94, 425-431
David H. Gent, Cynthia M. Ocamb and Joanna L. Farnsworth (2010)
Forecasting and management of hop downy mildew
Plant Disease (2010) 94, 1305-1313
Sarah J. Pethybridge, Frank S. Hay and David H. Gent (2010)
Characterization of the spatiotemporal attributes of Sclerotinia flower blight epidemics in a perennial pyrethrum pathosystem
Plant Pathology (2009) 58, 1081-1091
D.H. Gent, M.E. Nelson, J.L. Farnsworth and G.G. Grove (2009)
PCR detection of Pseudoperonospora humuli in air samples from hop yards
Journal of Economic Entomology (2009) 102, 274-286
D.H. Gent, D.G. James, L.C. Wright, D.J. Brooks, J.D. Barbour, A.J. Dreves, G.C. Fisher and V.M. Walton (2009)
Effects of powdery mildew fungicide programs on twospotted spider mite (Acari: Tetranychidae), hop aphid (Hemiptera: Aphididae), and their natural enemies in hop yards
Plant Disease (2009) 93, 229-237
Sarah J. Pethybridge, David H. Gent, Paul D. Esker, William W. Turechek, Frank S. Hay and Forrest W. Nutter Jr. (2009)
Site-specific risk factors for ray blight in Tasmanian pyrethrum fields
Plant Disease (2009) 93, 281-286
Amy B. Peetz, Walter F. Mahaffee and David H. Gent (2009)
Effect of temperature on sporulation and infectivity of Podosphaera macularis on Humulus lupulus
Phytopathology (2009) 99, 1190-1198
David H. Gent and Cynthia M. Ocamb (2009)
Predicting infection risk of hop by Pseudoperonospora humuli
Southwestern Entomologist (2009) 34, 13-29
Howard F. Schwartz, David H. Gent, Scott M. Fichtner, Robert Hammon, Whitney S. Cranshaw, Linda Mahaffey, Matt Camper, Kristen Otto and Mark McMillan (2009)
Straw mulch and reduced-risk pesticide impacts on thrips and Iris yellow spot virus on western-grown onions
Plant Disease (2008) 92, 463-468
David H. Gent, Mark E. Nelson and Gary G. Grove (2008)
Persistence of phenylamide insensitivity in Pseudoperonospora humuli
Plant Disease (2007) 91, 871-878
Jillian M. Lang, David H. Gent and Howard F. Schwartz (2007)
Management of Xanthomonas leaf blight of onion with bacteriophages and a plant activator
International Journal of Acarology (2007) 33, 307-318
V.M. Walton, A.J. Dreves, D.H. Gent, D.G. James, R.R. Martin, U. Chambers and P.A. Skinkis (2007)
Relationship between rust mites Calepitrimerus vitis (Nalepa), bud mites Colomerus vitis (Pagenstecher) (Acari: Eriophyidae) and short shoot syndrome in Oregon vineyards
Plant Disease (2007) 91, p. 468 (Gent et al.)
D.H. Gent, R.R. Martin and C.M. Ocamb (2007)
First report of Iris yellow spot virus on onion and leek in Western Oregon
Plant Disease (2007) 91, 1002-1012
David H. Gent, William W. Turechek and Walter F. Mahaffee (2007)
Sequential sampling for estimation and classification of the incidence of hop powdery mildew I: Leaf sampling
Plant Disease (2007) 91, 1013-1020
David H. Gent, William W. Turechek and Walter F. Mahaffee (2007)
Sequential sampling for estimation and classification of the incidence of hop powdery mildew II: Cone sampling
Plant Disease (2006) 90, 1433-1440
David H. Gent, Walter F. Mahaffee and William W. Turechek (2006)
Spatial heterogeneity of the incidence of powdery mildew on hop cones
Plant Disease (2006) 90, 1468-1480
David H. Gent, Lindsey J. du Toit, Scott F. Fichtner, S. Krishna Mohan, Hanu R. Pappu and Howard F. Schwartz (2006)
Iris yellow spot virus: An emerging threat to onion bulb and seed production
Plant Disease (2005) 89, 631-639
David H. Gent and Howard F. Schwartz (2005)
Management of Xanthomonas leaf blight of onion with a plant activator, biological control agents, and copper bactericides
Phytopathology (2005) 95, 918-925
David H. Gent, Abdulwahid Al-Saadi, Dean W. Gabriel, Frank J. Louws, Carol A. Ishimaru and Howard F. Schwartz (2005)
Pathogenic and genetic relatedness among Xanthomonas axonopodis pv. allii and other pathovars of X. axonopodis
Plant Disease (2005) 89, 507-514
David H. Gent, Jillian M. Lang, Michael E. Bartolo and Howard F. Schwartz (2005)
Inoculum sources and survival of Xanthomonas axonopodis pv. allii in Colorado
Plant Disease (2005) 89, 558-564
David H. Gent, Jillian M. Lang and Howard F. Schwartz (2005)
Epiphytic survival of Xanthomonas axonopodis pv. allii and X. axonopodis pv. phaseoli on leguminous hosts and onion
Plant Disease (2004) 88, 446-452
David H. Gent, Howard F. Schwartz and Rajiv Khosla (2004)
Distribution and incidence of Iris yellow spot virus in Colorado and its relation to onion plant population and yield
Phytopathology (2004) 94, 184-195
David H. Gent, Howard F. Schwartz, Carol A. Ishimaru, Frank J. Louws, Robert A. Cramer and Christopher B. Lawrence (2004)
Polyphasic characterization of Xanthomonas strains from onion
Plant Disease (2003) 87, 11-14
Howard F. Schwartz, Kristen L. Otto and David H. Gent (2003)
Relation of temperature and rainfall to development of Xanthomonas and Pantoea leaf blights of onion in Colorado
Plant Disease (2003) 87, 78-84
David H. Gent and Howard F. Schwartz (2003)
Validation of potato early blight disease forecast models for Colorado using various sources of meteorological data
Plant Disease (2003) 87, 591-597
David H. Gent, Howard F. Schwartz and Scott J. Nissen (2003)
Effect of commercial adjuvants on vegetable crop fungicide coverage, absorption, and efficacy
Plant Disease (2002) 86, p. 560 (Schwartz et al.)
H.F. Schwartz, W.M. Brown Jr., T. Blunt and D.H. Gent (2002)
Iris yellow spot virus on onion in Colorado
