Index Catalog // ScholarsArchive@OSU

Sensitivity of Disease Management Decision Aids to Temperature Input Errors Associated with Sampling Interval and Out-of-Canopy Sensor Placement

Creator:: Pfender, W. F., Gent, D. H., and Mahaffee, W. F.
Abstract:: Many plant disease epidemic models, and the disease management decision aids developed from them, are created based on temperature or other weather conditions measured in or above the crop canopy at intervals of 15 or 30 min. Disease management decision aids, however, commonly are implemented based on hourly weather measurements...
Resource Type:: Article
Full Text:: University Department of Botany and Plant Pathology, and W. F. Mahaffee, USDA-ARS Horti- cultural Crops

The Use and Role of Predictive Systems in Disease Management

Creator:: Gent, David H., Mahaffee, Walter F., McRoberts, Neil, and Pfender, William F.
Abstract:: Disease predictive systems are intended to be management aids. With a few exceptions, these systems typically do not have direct sustained use by growers. Rather, their impact is mostly pedagogic and indirect, improving recommendations from farm advisers and shaping management concepts. The degree to which a system is consulted depends...
Resource Type:: Article
Full Text:: . Gent,1,3,∗ Walter F. Mahaffee,2,3 Neil McRoberts,4 and William F. Pfender1,3 1U.S. Department of

The Odell Skipper ; Vol. 1, No. 10 (1934 Aug. 8)

Creator:: Civilian Conservation Corps (U.S.). Camp F-96 (Odell Lake, Or.)
Abstract:: Gerald W. Williams Collection
Resource Type:: Journal
Full Text:: L ijjLL -J '--- f\ -p. ,51 -1. 11 1F;LI/lJI '- lt_

Development of a grower-conducted inoculum detection assay for management of grape powdery mildew

Creator:: Thiessen, L. D., Keune, J. A., Neill, T. M., Turechek, W. W., Grove, G. G., and Mahaffee, W. F.
Abstract:: Management of grape powdery mildew (Erysiphe necator) and other polycyclic diseases often relies on calendar-based pesticide application schedules that assume the presence of inoculum. An inexpensive, loop-mediated isothermal amplification (LAMP) assay was designed to quickly detect airborne inoculum of E. necator to determine when to initiate a fungicide application programme....
Resource Type:: Article
Full Text:: ., Turechek, W. W., Grove, G. G., & Mahaffee, W. F. (2016). Development of a grower‐conducted inoculum

F-tests in partially balanced and unbalanced mixed linear models

Creator:: Utlaut, Theresa L.
Abstract:: This dissertation considers two approaches for testing hypotheses in unbalanced mixed linear models. The first approach is to construct a design with some type of structure or "partial" balance, so that some of the optimal properties of a completely balanced design hold. It is shown that for a particular type...
Resource Type:: Dissertation
Full Text:: all combinations of w'; of levels of the factors in T* = .F\g, where v*f and vg denote the vector

Association of Spring Pruning Practices with Severity of Powdery Mildew and Downy Mildew on Hop

Creator:: Gent, David H., Nelson, Mark E., Grove, Gary G., Mahaffee, Walter F., Turechek, William W., and Woods, Joanna L.
Abstract:: Downy mildew (caused by Pseudoperonospora humuli) and powdery mildew (caused by Podosphaera macularis) are important diseases of hop in the Pacific Northwest United States, and cultural practices may affect the severity of both diseases. The association of spring pruning quality and timing with severity of downy mildew and powdery mildew...
Resource Type:: Article
Full Text:: ., Grove, G. G., Mahaffee, W. F., Turechek, W. W., and Woods, J. L. 2012. Association of spring pruning

Frequency of daily tooth brushing: predictors of change in 9- to 11-year old US children

Creator:: Polk, D. E., Geng, M., Levy, S., Koerber, A., and Flay, B. R.
Abstract:: OBJECTIVE: To investigate whether an increase in daily tooth brushing frequency in children was predicted by either a) having a strong intention to brush twice a day or b) their parents receiving information about their new caries experience. BASIC RESEARCH DESIGN: Secondary data analyses were conducted on two waves of...
Resource Type:: Article
Full Text:: (3), 136-140. doi:10.1922/CDH_3321Polk05 10.1922/CDH_3321Polk05 F D I World Dental Press Ltd

Invaded range of the blackberry pathogen Phragmidium violaceum in the Pacific Northwest of the USA and the search for its provenance

Creator:: Morin, Louise, Gomez, Don R., Evans, Katherine J., Neill, Tara M., Mahaffee, Walt F., and Linde, Celeste C.
Abstract:: Field surveys in 2006 confirmed that the exotic rust fungus Phragmidium violaceum was widespread on Rubus armeniacus and Rubus laciniatus in the Pacific Northwest of the USA. The origin and dispersal pattern of this obligate biotrophic pathogen in the USA were investigated by comparing the genetic diversity and structure of...
Resource Type:: Article
Full Text:: , 13 St Johns Avenue, New Town, TAS 7008, Australia T. M. Neill � W. F. Mahaffee Horticultural Crops

f-em8714sectIIIchapt1-4.pdf

Creator:: Oregon State University. Extension Service, Conway, Flaxen D. L., Godwin, Derek, Cloughesy, Mike, Corcoran, P. E. (Patrick E.), Nierenberg, Tara R., Adams, Paul W., Brewer, Linda J., Ellis-Sugai, Barbara, 1957-, Giannico, Guillermo Roberto, 1960-, Good, James W., Hibbs, David E., Holbert, Mary, Huddleston, J. H. (James Herbert), 1942-, Lambert, Beth C., Minshew, Hudson F., Rogers, Bill, Runyon, John, Schreder, Peter, Simon-Brown, Viviane, and Stephenson, Garry Owen
Abstract:: Provides information about complexity of watersheds. Outlines ways to form partnerships, to develop strategies for enhancing watershed resources, and to implement enhancement projects.
Full Text:: Range, by W. Emmingham et al., Oregon State University College of Forestry, Corvallis, 2000) Chapter

A glimpse of Newport : 75 years ago : second series

Creator:: Blue, Lucy F.
Abstract:: Gerald W. Williams Collection
Resource Type:: Book
Full Text:: . Second Series S By LUCY F. BLUE Published by Mr. and Mrs. Paul Van de Velde Waldport, Oregon 1950

ScholarsArchive@OSU

Sensitivity of Disease Management Decision Aids to Temperature Input Errors Associated with Sampling Interval and Out-of-Canopy Sensor Placement

The Use and Role of Predictive Systems in Disease Management

The Odell Skipper ; Vol. 1, No. 10 (1934 Aug. 8)

Development of a grower-conducted inoculum detection assay for management of grape powdery mildew

F-tests in partially balanced and unbalanced mixed linear models

Association of Spring Pruning Practices with Severity of Powdery Mildew and Downy Mildew on Hop

Frequency of daily tooth brushing: predictors of change in 9- to 11-year old US children

Invaded range of the blackberry pathogen Phragmidium violaceum in the Pacific Northwest of the USA and the search for its provenance

f-em8714sectIIIchapt1-4.pdf

A glimpse of Newport : 75 years ago : second series

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