Commercial radish seed producers in the Willamette Valley of Oregon have observed a late season wilt in their seed fields. Twenty-two fields were surveyed for wilt in the Willamette Valley during June through August 2012 and 2013. Plants exhibiting wilt symptoms were collected from the fields and examined for vascular...
The overall goal of this study was to investigate the gaps in edible packaging research in the areas of both edible coatings and edible films. This was accomplished across two distinct studies, in the pursuit of extending shelf life of fresh fruit for decreasing food loss, and heightening the consumer...
Spotted-wing drosophila (SWD, Drosophila suzukii) is an invasive fruit fly species native of Southeast Asia. In vineyards, SWD lays eggs in damaged and intact fruit of the most soft-skinned varieties, and feeds on damaged fruits during the harvest period. Feeding and oviposition activities increase the likelihood of vectoring spoilage bacteria,...
Timber harvesting practices can increase fine sediment inputs to streams due to increased hillslope soil erosion and mass wasting of roads, hillslopes, and stream channels. Excessive fine sediment depositions have been shown to impact aquatic ecosystems, fish habitat, and downstream community water supply. Despite these deleterious impacts, the influence of...
Children in middle childhood were surveyed in elementary schools
to explore possible associations between their perceptions about certain
characteristics of their sibling relationships and the ways in which
their parents responded to sibling quarrels.
An instrument was developed to measure perceptions of types of parental responses and the
Sibling Relationship...
Milk collected from individual cows (n= 31) was centrifuged to equalize fat composition and was tested during chymosin-induced coagulation to compare the influences of somatic cell level, breed, parity, protein composition, and lactation stage on coagulation rate. Coagulation rate was determined using diffuse reflectance. Pearson correlation coefficients were calculated for...
The purpose of this study was to document the development of pre-service teachers' Technology Specific Pedagogy as they learned to teach mathematics with technology during their initial licensure program. The study investigated the pre-service teachers' learning using both a social and a psychological perspective of teacher learning. Two research questions...
Invasion by exotic species can pose a major challenge for developing native
plant communities in wetland restoration projects. Often native plant communities
do not develop as anticipated in restored wetlands due to colonization by exotic
species that dominate the native plant community. Despite the time and expense to
restore wetlands,...
Social movement theory has rarely been tested with counterfactual cases, that is, instances in which movements do not emerge. Moreover, contemporary theories about political opportunity and resources often inadequately address the issue of motivation. To address these shortcomings, this article examines 20 communities that are "at risk" for mobilization because...
This classification is an update of the 2004 classification of native vegetation of Oregon by Kagan, Christy, Murray and Titus. As before, this classification lists the native plant associations known to occur in Oregon, and includes both successional and climax vegetation types that were part of the presettlement landscape of...