Search Results - "Gent, D. H"

Stability and Resiliency of Biological Control of the Twospotted Spider Mite (Acari:Tetranychidae) in Hop by Iskra, A.E, Woods, J. L, Gent, D. H

“…The twospotted spider mite (Tetranychus urticae Koch) is a common pest in agricultural and ornamental crops. This pest can be controlled by resident predatory…”
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Influence of Nitrogen Fertilizer Rate on Hop Looper by Iskra, A. E, Woods, J. L, Gent, D. H

“…Hop looper, Hypena humuli Harris, can cause substantial defoliation and crop damage by feeding on hop leaves and cones. A 4-yr field study conducted in western…”
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QTL analysis of resistance to powdery mildew in hop (Humulus lupulus L.) by Henning, J. A., Gent, D. H., Townsend, M. S., Woods, J. L., Hill, S. T., Hendrix, D.

“…Hop with powdery mildew [HPM: caused by Podosphaera macularis (Wallr.) U. Braun & S. Takam.] results in significant losses in hop production by reducing yield…”
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Identification and distribution of mating‐type idiomorphs in populations of Podosphaera macularis and development of chasmothecia of the fungus by Wolfenbarger, S. N, Twomey, M. C, Gadoury, D. M, Knaus, B. J, Grünwald, N. J, Gent, D. H

“…Podosphaera macularis, the causal agent of hop powdery mildew, is known to produce chasmothecia (formerly cleistothecia) in eastern North America and Europe…”
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Precision QTL mapping of downy mildew resistance in hop (Humulus lupulus L.) by Henning, J. A., Gent, D. H., Twomey, M. C., Townsend, M. S., Pitra, N. J., Matthews, P. D.

“…Hop downy mildew (DM) is an obligate parasite causing severe losses in hop if not controlled. Resistance to this pathogen is a primary goal for hop breeding…”
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Genotyping-by-sequencing of a bi-parental mapping population segregating for downy mildew resistance in hop (Humulus lupulus L.) by Henning, J. A, Gent, D. H, Twomey, M. C, Townsend, M. S, Pitra, N. J, Matthews, P. D

“…Downy mildew (caused by Pseudoperonospora humuli) causes significant losses in hop (Humulus lupulus L.) cone yield and quality, and potential crown death…”
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Crop damage caused by powdery mildew on hop and its relationship to late season management by Gent, D. H., Grove, G. G., Nelson, M. E., Wolfenbarger, S. N., Woods, J. L.

“…Powdery mildew of hop (Podosphaera macularis) may cause economic loss due to reductions in cone yield and quality. Quantitative estimates of crop damage from…”
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Spatial analysis and incidence-density relationships for downy mildew on hop by Gent, D. H., Farnsworth, J. L., Johnson, D. A.

“…The spatial pattern of downy mildew (Pseudoperonospora humuli) on hop (Humulus lupulus) was characterized over 4 years to aid in deriving an appropriate…”
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Evaluation of airborne methyl salicylate for improved conservation biological control of two-spotted spider mite and hop aphid in Oregon hop yards by Woods, J. L., James, D. G., Lee, J. C., Gent, D. H.

“…The use of synthetic herbivore-induced plant volatiles (HIPV) to attract natural enemies has received interest as a tool to enhance conservation biological…”
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Spatial characteristics of white mould epidemics and the development of sequential sampling plans in Australian bean fields by Jones, S. J., Gent, D. H., Pethybridge, S. J., Hay, F. S.

“…To improve sampling efficiency and precision in the assessment of white mould (caused by Sclerotinia sclerotiorum) disease incidence on bean (Phaseolus…”
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PCR detection of Pseudoperonospora humuli in air samples from hop yards by Gent, D.H, Nelson, M.E, Farnsworth, J.L, Grove, G.G

“…Downy mildew of hop, caused by Pseudoperonospora humuli, is an important disease in most regions of hop production and is managed largely with regular…”
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Decision Aids for Multiple-Decision Disease Management as Affected by Weather Input Errors by Pfender, W.F, Gent, D.H, Mahaffee, W.F, Coop, L.B, Fox, A.D

“…Rational management of plant diseases, both economically and environmentally, involves assessing risks and the costs associated with both correct and incorrect…”
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Nonabelian flows in networks by Gent, D. M. H.

“…In this work we consider a generalization of graph flows. A graph flow is, in its simplest formulation, a labelling of the directed edges with real numbers…”
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Population Density and Phenology of Tetranychus urticae (Acari: Tetranychidae) in Hop is Linked to the Timing of Sulfur Applications by Woods, J. L, Dreves, A. J, Fisher, G. C, James, D. G, Wright, L. C, Gent, D. H

“…The twospotted spider mite, Tetranychus urticae Koch, is a worldwide pest of numerous agronomic and horticultural plants. Sulfur fungicides are known to induce…”
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Homothallism in Pseudoperonospora humuli by Gent, D. H., Cohen, Y., Runge, F.

“…The downy mildew pathogen, Pseudoperonospora humuli, forms oospores abundantly in diseased hop tissue. Diverse monosporangial isolates of P. humuli derived…”
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Spatial and Temporal Stability of the Estimated Parameters of the Binary Power Law by Gent, D.H, Turechek, W.W, Mahaffee, W.F

“…The incidence of hop powdery mildew on leaves, caused by Podosphaera macularis, collected from 1,606 transects in 77 commercial hop yards in Oregon and…”
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Genome Sequencing and Transcriptome Analysis of the Hop Downy Mildew Pathogen Pseudoperonospora humuli Reveal Species-Specific Genes for Molecular Detection by Rahman, A, Góngora-Castillo, E, Bowman, M J, Childs, K L, Gent, D H, Martin, F N, Quesada-Ocampo, L M

“…is an obligate oomycete pathogen of hop ( ) that causes downy mildew, an important disease in most production regions in the Northern Hemisphere. The pathogen…”
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Effects of Powdery Mildew Fungicide Programs on Twospotted Spider Mite (Acari: Tetranychidae), Hop Aphid (Hemiptera: Aphididae), and Their Natural Enemies in Hop Yards by Gent, D. H, James, D. G, Wright, L. C, Brooks, D. J, Barbour, J. D, Dreves, A. J, Fisher, G. C, Walton, V. M

“…Twospotted spider mite, Tetranychus urticae Koch (Acari: Tetranychidae), and hop aphid, Phorodon humuli (Schrank) (Hemiptera: Aphididae), are the most…”
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Site-specific risk factors of white mould epidemics in bean (Phaseolus vulgaris) in Tasmania, Australia by Jones, SJ, Gent, DH, Pethybridge, SJ, Hay, FS

“…In Tasmania, Australia, if more than 5% of bean pods are affected by white mould (Sclerotinia sclerotiorum) shipments may be rejected by the processor. This…”
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Registration of High Alpha‐Acid Male Hop Germplasm USDA 21267M by Henning, John A., Gent, D. H, Townsend, M. Shaun, Haunold, Alfred

“…USDA 21267M (Reg. No. GP‐37, PI 559093) male hop (Humulus lupulus L. var. lupulus) germplasm was released to the public 6 Dec. 2011. This germplasm has been…”
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