Studies to evaluate resistance in snap beans, Phaseolus vulgaris L. to adult western spotted cucumber beetles, Diabrotica u. undecimpunctata Mann. were conducted in greenhouse cages, field cages, field plots, and in temperature controlled cabinet in the laboratory. Results showed that there were differences in susceptibility to adult feeding injury between...
The Purpose of the Study
The central purpose of this study was to determine if certain
personality characteristics differ between community college persisters
and those who drop out of school. The following 12 a priori
hypotheses involving six Adjective Check List personality scales were
tested:
1. Male persisters would have...
The problem studied was to determine if there were any significant
differences (5% level) between control and experimental groups
of students using rapid batch processing and time-sharing computer
facilities in the study of elementary Fortran programming.
Students were randomly assigned to the control (batch processing)
and experimental (time-sharing) groups with...
The study (1) describes the life cycle of P. nebulosus,
(2) examines stimuli that may cause the beetles to locate brood
material, and (3) establishes the relationship between moisture
stress in Douglas-fir and colonization by P. nebuZosus.and other
meristem insects.
(1) Development of P. nebulosus goes through the egg stage,...
The arthropod community in a Douglas-fir forest near Blue River, Lane County, Oregon was investigated from March through August 1973. Five stands of Douglas-fir were sampled: two clearcuttings, a young-growth
(20 years old), a midgrowth (125 years old), and an old-growth (450 years old) plot. A pole pruner was used...
Published September 1973. 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
The genus Bdellovibrio is characterized by the unique ability to
parasitize and enter gram-negative host bacteria. This interaction
leads to the consumption and death of the host cell as the Bdellovibrio
grows and divides into progeny. Little is known about the metabolism
of host cell components by Bdellovibrio. The possibility...
A study of the apparel industry in the State of Washington was
accomplished through the use of a questionnaire which yielded data
concerning the types of automated and mechanized equipment used
during three time periods. Descriptive information about the apparel
industry in this state was gathered in order to analyze...
The study was conducted to identify variables, from
among the theory related and demographic/biographic variables
included in the study, which were able to discriminate
between groups of male and groups of female freshmen
who differed in their level of self-actualization.
Five hundred and forty freshmen (277 males and 263
females)...
Male dominance in conversation is encouraged by the adult
socialization pattern in which men routinely interrupt the conversation
of women and develop a topic out of turn.
The purpose of this study was to investigate verbal interruptive
behavior by utilizing an experimental approach focusing on children's
interruptions and teacher responses...
Pre-harvest foliar desiccation of Yellow Globe Danvers onions was
investigated as a means to improve harvest procedure and to reduce
storage losses. Foliar desiccation tended to increase storage disease
and sprouting incidence versus the untreated controls. Paraquat
approximately doubled storage disease in both years. Stoddard solvent
and ethephon increased disease...
A number of Antarctic marine psychrophilic bacteria were
isolated having the ability to grow and accumulate ¹⁴ C-TMG only at
temperatures below 20 C. It was shown that galactose rather than
lactose was the primary inducer and utilizable substrate for the
permease system. Further studies with a Vibrio species (Ant-12),...
The development of Easter lily Lilium longiflorum Thunb.
'Ace' bulblets from scales was used to study the influence of scale
pre-cooling, growing temp, and daylength on scale initiation,
scale "filling" (bulbing), and scale leaf formation. The development
of 'Croft', 'Ace', and 'Nellie White' daughter bulbs in field-grown
yearlings was also...
An enhancement of the therapeutic effect and/or a reduction in
the toxicity have been shown by a variety of antineoplastic compounds
when glucose is added to the treatment schedule. A possible explanation
for this involves a selective change in intracellular pH of the
tumor tissue initiating a greater uptake of...
An outbreak of Douglas-fir beetle, Dendroctonus pseudotsugae Hopk., began in 1969 in the North Fork Clearwater River drainage in northern Idaho. This infestation probably resulted from trees felled during clearing for the Dworshak Reservoir, from ice and snow breakage which occurred during the winter of 1968-69 in stands adjacent to...