The life history, temperature, humidity, and feeding requirements of the
phytoseiid predator mite, Typhlodromus americanus Chant and Yoshida-Shaul were
tested in the laboratory. Occurance of the mite in the field during different times of the
year was investigated as well. Effects of temperature and humidity on egg hatch, the
feeding...
Cereal residues suppress the development of small seeded, summer annual weeds. The focus of this study was to determine whether cereal residues can be used to suppress weeds in cucumber production systems in the Pacific Northwest. In the first of three experiments, cereal residues of fall-planted, spring-killed cover crops suppressed...
Ascorbic acid, or vitamin C, is well known as a co-factor for proline-hydroxylase and as an anti-oxidant. However, it is also capable of forming covalent bonds, particularly in the role of a nucleophile, henceforth termed 'ascorbylation'.
The ascorbylation of electrophiles can occur under physiological conditions. Furthermore, there are a number...
The effects of overcoming rest by application of "near-lethal" (NL)
stress treatments on the subsequent development of cold hardiness of
stem tissues of red-osier dogwood, Comus sericea L., at different rest
stages under three post-environments (0°, 23°, and natural condition)
were studied. NL-heat stress (47°C for one hour) treatment during...
Farlowia mollis is a marine red alga that grows in the
intertidal region along the coast of Oregon. We began studying
the chemistry of this alga after a survey of Oregon seaweeds
revealed possibly interesting chemistry and antimicrobial activity
in its crude organic extract.
Over the past three years the...
A pest management program for variegated cutworm (VC), Peridroma
saucia (Hubner), in Oregon peppermint was developed based on studies
of pheromone trapping, sampling methods, and economic thresholds.
Pheromone traps effectively trapped VC males and were used to
reflect development and oviposition trends. Trap height was linearly
correlated to moth catch...
The feasibility of managing codling moth, Cydia pomonella (L.), with mixtures
of Bacillus thuringiensis-based microbial and selected chemical insecticides was
studied under laboratory and field conditions. Joint actions (synergism, additivity and
antagonism) of these mixtures were determined for both egg and larval stages. Higher
rates of microbial control agents (MCAs),...
The vascular system of Aplysia californica is a simple visceromotor system with three main arteries innervated by a small pool of identified neurons. I used this system to
study the functions of neuropeptide transmitters and their actions on neural and muscle tissues. A central finding of this study is that...