Published April 1941. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Interspecific hybridizations between P. vulgaris and P. acutifolius
and between P. vulgaris and P. lunatus were investigated. Prefertilization
events were similar in inter- and intra-specific crosses. Fertilization
was completed in all crosses and the time of fertilization was
dependent on the maternal parent, reflecting differences in the time of
maturation...
Various aspects of the biology of the woolly pear aphid
Eriosoma pyricola were studied in order to further understand its annual
cycle. It was already known that. E. pyricola produces alate sexuparae
in response to the onset of dormancy in its secondary host, a pear.
This study of E. pyricola...
Background: Body Mass Index (BMI) is used as a quick and inexpensive tool to measure populations at risk for a number of metabolic and chronic conditions. In part due to its simplicity, BMI has been criticized for its inaccurate prediction concerning health outcomes. Due to the diversity in the United...
Chromium, an element of widespread use, is toxic in some
forms. Improper disposal of waste chromium products has
resulted in contamination of many sites throughout the United
States, including the United Chrome Products Superfund site
in Corvallis, Oregon. A better understanding of chromium
chemistry is needed to facilitate the remediation...
The severity of wildfires around the globe is increasing. At the same time, urban development is expanding outward into areas where severe fires occur. There is an increased risk of home loss to fires in areas where severe fires and urban expansion meet. Ignition of homes or nearby fuel is...
Studies with fluorodifen were conducted to gain more information
about its field performance and the influence of light quantity,
quality and timing of exposure on its phytotoxic properties. Uptake
and trans location in three plant species were also investigated.
These studies were aimed at evaluating the usefulness of this chemical...
The effects of modifying air temperature, soil temperature,
and soil moisture levels on flowering, fruiting, and chemical composition
of Tendercrop snap beans were studied in experiments in
the field and in the greenhouse during 1961, 1962, and 1963.
High maximum temperatures of 95-105° F. during bloom reduced
the percent set...