19 results match your criteria: "Oregon State University Extension Service[Affiliation]"

A survey of cranberry fruit rots in commercial production beds in Oregon and Washington.

Front Plant Sci

September 2024

United States Department of Agriculture, Agricultural Research Service, Horticultural Crops Disease and Pest Management Research Unit, Corvallis, OR, United States.

Article Synopsis
  • Fungal fruit rots pose a significant threat to cranberry production, with multiple fungal genera implicated in rot across various locations in the USA, particularly affecting Oregon and Washington, which are key producers.
  • The primary goal of the research was to analyze the specific types of fungal pathogens causing fruit rot in the cranberry farms of Oregon and Washington over a four-year period.
  • Results showed a variety in yield and fungal pathogens from year to year, highlighting the prevalence of certain pathogens like Neofabraea actinidiae and established storage rots, which could impact both yield and storage practices in cranberry production.
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First Report of causing a Cranberry Fruit Rot in Oregon.

Plant Dis

March 2024

USDA ARS, Horticultural Crops Disease and Pest Management Research Unit, Corvallis, Oregon, United States;

Cranberry (, L.) is a commercial small fruit that is native to North America. Oregon ranks fourth in cranberry production in the U.

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Exotic annual grasses invasion across northern Great Basin rangelands has promoted a grass-fire cycle that threatens the sagebrush (Artemisia spp.) steppe ecosystem. In this sense, high accumulation rates and persistence of litter from annual species largely increase the amount and continuity of fine fuels.

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Pesticides Misused for Bed Bug Control: Comparing Professional and Nonprofessional Applications Reported to the National Pesticide Information Center, 2013-2017.

Am J Public Health

August 2021

The authors are with the National Pesticide Information Center, Department of Environmental and Molecular Toxicology, Oregon State University, Corvallis. Kaci Buhl is also with the Pesticide Safety Education Program, Oregon State University Extension Service, Corvallis.

To compare outcomes when pesticides are used to control bed bugs by professionals and nonprofessionals. All US National Pesticide Information Center inquiries from 2013 to 2017 were assessed to identify scenarios involving bed bugs and pesticide applications. Cases were evaluated with respect to types of applicators, misapplications, and human pesticide exposures.

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Molecular and Alkaloid Characterization of Sensu Lato From Grass Seed Production Areas of the U.S. Pacific Northwest.

Phytopathology

May 2021

Department of Botany and Plant Pathology, Hermiston Agricultural Research and Extension Center, Oregon State University, Hermiston, OR 97838.

Ergot, caused by sensu lato, is an economically important seed replacement disease of Kentucky bluegrass () and perennial ryegrass () seed crops. sensu stricto is considered the primary species responsible, but genetic diversity and cryptic species within sensu lato have previously been reported. Fifty-six sensu lato isolates collected from ( = 21) and ( = 35) in Oregon and Washington between 2010 and 2014 were characterized via random amplified polymorphic DNA (RAPD), partial internal transcribed spacer (ITS), β-tubulin and elongation factor-1α (EF-1α) sequences, conidial size, and ergot alkaloid chemotype.

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Childhood obesity continues to be a problem of national concern; school-based obesity prevention programs that incorporate nutrition education are among the efforts to address this issue. Implementation of these programs is often conducted through partner agencies like the Supplemental Nutrition Assistance Program Education (SNAP-Ed). As educators within these agencies have limited time and many schools qualify for programming, developing programs that extend reach by partnering with classroom teachers to deliver nutrition education is critical.

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Research has shown that engaging in regular physical activity supports physiologic, metabolic, and immunologic processes, as well as quality of life. However, few youth in the United States meet the U.S.

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Comparing imaging, acoustics, and radar to monitor Leach's storm-petrel colonies.

PeerJ

April 2019

Department of Fisheries and Wildlife, Hatfield Marine Science Center, Oregon State University, Newport, OR, United States of America.

Seabirds are integral components of marine ecosystems and, with many populations globally threatened, there is a critical need for effective and scalable seabird monitoring strategies. Many seabird species nest in burrows, which can make traditional monitoring methods costly, infeasible, or damaging to nesting habitats. Traditional burrow occupancy surveys, where possible, can occur infrequently and therefore lead to an incomplete understanding of population trends.

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Spread and in-field spatial patterns of vines infected with grapevine red blotch virus (GRBV) were documented in Oregon vineyards using field sampling, molecular diagnostics, and spatial analysis. Grapevine petiole tissue collected from 2013 to 2016 was tested using quantitative polymerase chain reaction for GRBV. At Jacksonville in southern Oregon, 3.

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Article Synopsis
  • Thirty-two 14-month old steers died over four days after drinking water contaminated with microcystin due to a cyanobacterial bloom in southeastern Oregon, USA.
  • Clinical examinations revealed signs of acute liver disease linked to microcystin toxicosis, with high concentrations of microcystin detected in both water and the steers' rumen contents.
  • The study highlights the potential risks of cyanobacterial blooms producing dangerous toxins like microcystin, indicating that such harmful occurrences can happen in regions not traditionally associated with these toxic cyanobacteria.
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In the Pacific Northwest of the USA, winter and spring temperature vary with the Pacific Decadal Oscillation, making effects of anthropogenic warming difficult to detect. We sought to detect community-level signals of anthropogenic change in a legacy plant phenology dataset. We analyzed both incomplete data from 1959 to 2016 on spring phenology of 115 species and more complete 1996-2016 data on spring and fall events for 607 plant species.

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A Multicomponent, School-Based Intervention, the Shaping Healthy Choices Program, Improves Nutrition-Related Outcomes.

J Nutr Educ Behav

May 2017

Department of Nutrition, University of California, Davis, Davis, CA; Center for Nutrition in Schools, University of California, Davis, Davis, CA; University of California Agriculture and Natural Resources, Davis, CA. Electronic address:

Objective: To evaluate the effectiveness of the Shaping Healthy Choices Program (SHCP).

Design: A clustered, randomized, controlled intervention lasting 1 school year.

Setting: Schools in northern and central California.

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Opinions about public lands and the actions of private non-industrial forest owners in the western United States play important roles in forested landscape management as both public and private forests face increasing risks from large wildfires, pests and disease. This work presents the responses from two surveys, a random-sample telephone survey of more than 1500 residents and a mail survey targeting owners of parcels with 10 or more acres of forest. These surveys were conducted in three counties (Wallowa, Union, and Baker) in northeast Oregon, USA.

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Objectives: To apply Virginia's cost-benefit analysis (CBA) model developed for a large Expanded Food and Nutrition Education Program (EFNEP) to Oregon's small EFNEP. To estimate a cost-benefit ratio for Oregon's EFNEP based on retrospective analysis of program costs and optimal nutrition behaviors (ONBs) in relation to potential health-related savings for diet-related chronic diseases/conditions.

Design: Standard components of a CBA.

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During July 1997, Epichloe typhina (Pers.:Fr.) Tul.

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Smoked fish often varies in moisture content. To kill Clostridium-botulinum spores, recommendations for home canning in glass jars must take this and the fill of the jar into account. Pale chum salmon were smoked to three levels of moisture loss (10, 20, 30%) and canned using household techniques.

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Little bluestem litter dynamics in Minnesota old fields.

Oecologia

June 1987

Department of Ecology and Behavioral Biology, University of Minnesota, 55455, Minneapolis, MN, USA.

We studied the decay and nitrogen dynamics of little bluestem (Schizachyrium scoparium) litter in fertilized and unfertilized Minnesota old fields, using the litterbag technique. Annual decay rates and nitrogen leaching losses during the first month of decay were highly correlated with N content of litter and not with fertilizer additions. After the first month of decay, nitrogen was immobilized for at least 18 months.

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Nitrogen mineralization and nitrification in four Minnesota old fields.

Oecologia

March 1987

Dept. of Ecology and Behavioral Biology, Univ. of Minnesota, 55455, Minneapolis, MN, USA.

Nitrogen availability and its response to fertilizer amendments was measured by in situ incubation in four old fields ranging in age from 16 to >100 years at Cedar Creek Natural History Area. Net nitrogen mineralization in control plots increased with field age, from 4.4 g/m in the youngest field to 6.

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