Published October 1982. 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...
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...
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...
Health care providers, including complementary and alternative medical (CAM)
practitioners, exert a significant influence on parental pediatric vaccination decisions.
Use of CAM therapies is increasing in Oregon. Concomitantly, there has been a
decade-long increase in parental vaccine refusal in Oregon, rising from 1 to 5 percent
from 2000-2009. For example,...
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...