Index Catalog // ScholarsArchive@OSU

Natural and semi-synthetic compounds with biocidal activity against arthropods of public health importance

Creator:: Khasawneh, Mohammad A.
Abstract:: This study identified new compounds with pest control activities. The two sources of candidates that were followed here were the main heartwood extract of Alaska Yellow Cedar (AYC) constituents and several semi-synthetic counterparts. Five compounds were isolated and identified for the first time in AYC heartwood in this research: two...
Resource Type:: Dissertation
Full Text:: positions C-2 and C- 13 of the eremophilane ring structure has an important effect on the activity. For

Effect of Various Pesticides on Lettuce Physiology and Yield

Creator:: Toscano, N. C.
Resource Type:: Conference Proceeding
Full Text:: Residue, PPm <0.1 <0.1 <0.1 <0.1 <0.1 <0.1 EFFECT OF VARIOUS PESTICIDES ON LETTUCE PHYSIOLOGY AND

Arthropod communities on understory plants in thinned and unthinned Douglas-fir forests in the Oregon Coast Range

Creator:: Doolittle, Alyssa M.
Abstract:: This study assessed the effects of thinning on arthropod communities on understory plants in the Central Oregon Coast Range. Arthropods were sampled from five understory plants in five pairs of thinned and unthinned, young (50-80 yrs), managed Douglas-fir stands, from late May to mid-July of 1998. Vine maple (Acer circinatum),...
Resource Type:: Masters Thesis
Full Text:: assessing the effect of thinning on arthropod communities in the understory, it is important to understand

The response of nitrifying bacteria to treatments of N-Serve and Roundup in continuous-flow soil columns

Creator:: Rhodes, Albert N.
Abstract:: This study examined the effects of Roundup [N-(phosphonomethyl) glycine] and N-Serve [2-chloro-6- (trichloromethyl) pyridine] on nitrifying organisms in static batch, perfusion soil columns, and a new continuous-flow soil column system. The continuous-flow method is new to nitrification studies and was shown to produce greater nitrifier activity than either static batch...
Resource Type:: Masters Thesis
Full Text:: Prosser (1987), on the other 10 hand, examined the effect of surface specificity and attachment on

How to reduce bee poisoning from pesticides [2013]

Creator:: Johansen, Erik, Hooven, Louisa Ada, Sagili, Ramesh Reddy, and Oregon State University. Extension Service
Abstract:: An overview of how a variety of wild and managed bees and their pollination activities are affected by pesticide application. Provides guidelines for how beekeepers, growers and pesticide applicators can work together to prevent bee poisoning.
Resource Type:: Technical Report
Full Text:: the side of caution, and avoid spraying any pesticide near bee colonies and on flowering plants

Ecuadorean soil arthropod distribution in native vegetation, pasture and cropland and a potato field with and without pesticides

Creator:: Núñez Terán, Verónica
Abstract:: In the past 10 years we have witnessed the beginnings of the study of soil ecology as a unified science, and the general realization by soil scientists, farmers, and land managers that many of the most important economic aspects of soil health are controlled by biological factors. This research focuses...
Resource Type:: Masters Thesis
Full Text:: CONTENTS CHAPTER 1 CHAPTER 2 COMPARISON OF THREE TYPES OF LAND MANAGEMENT SYSTEMS ON SOIL ARTHROPOD

Effects of dieldrin on the growth and development of steelhead trout

Creator:: Oregon State University. Agricultural Experiment Station, Shumway, Dean L., and Chadwick, George Grete
Abstract:: Experiments were conducted to determine survival, growth, and accumulation of HEOD (major component of dieldrin) in the tissues of steelhead trout (Salmo gairdneri) embryos, alevins, and fry exposed to dieldrin concentrations ranging from 0.012 to 52 ppb. The fish were held in specially designed exposure chambers provided with continuously renewed...
Resource Type:: Technical Report
Full Text:: fry, held at various concentrations; and (3) I effect of dieldrin concentrations in water on the

Consequences of coumaphos and Varroa destructor on drone honey bee sperm quantity

Creator:: Delaney, Deborah Anne
Abstract:: The number of drones and genetic diversity among drones are essential components to a well mated queen. Varroa destructor preferentially parasitizes drone brood, and is thought to be responsible for the loss of feral populations that once provided additional drones for honey bee mating areas. It is necessary to use...
Resource Type:: Masters Thesis
Full Text:: subtle effects of compounds that are directly introduced into the hive. The effect of coumaphos on

Preliminary report on DN dusts in relation to their effect on nursery stock when used for the control of the common red spider

Creator:: Oregon State College. Agricultural Experiment Station, Schuh, Joe, 1910-1981, and Gray, K. W. (Kenneth Wiesner), 1905-
Abstract:: Published January 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
Resource Type:: Technical Report
Full Text:: IN RELATION TO TI-DIR EFFECT ON NURSERY STOCK WREN TJSED FOR TRE CONTROL OF TRE COMMON RED SPIDER by

Biochemical and physiological indicators of behavioral impairment in salmonids exposed to chlorpyrifos and copper

Creator:: Sandahl, Jason
Abstract:: The purpose of this work was to determine if environmentally-relevant concentrations of chlorpyrifos and copper, two commonly detected chemicals in Western surface waters, can negatively impact the biological health of salmonids. Both compounds are highly neurotoxic to fish, but each with distinct biological target sites and mechanisms of action. We...
Resource Type:: Dissertation
Full Text:: . Copper is also a contaminant of concern, although no lawsuits are pending on its use as a pesticide at

ScholarsArchive@OSU

Natural and semi-synthetic compounds with biocidal activity against arthropods of public health importance

Effect of Various Pesticides on Lettuce Physiology and Yield

Arthropod communities on understory plants in thinned and unthinned Douglas-fir forests in the Oregon Coast Range

The response of nitrifying bacteria to treatments of N-Serve and Roundup in continuous-flow soil columns

How to reduce bee poisoning from pesticides [2013]

Ecuadorean soil arthropod distribution in native vegetation, pasture and cropland and a potato field with and without pesticides

Effects of dieldrin on the growth and development of steelhead trout

Consequences of coumaphos and Varroa destructor on drone honey bee sperm quantity

Preliminary report on DN dusts in relation to their effect on nursery stock when used for the control of the common red spider

Biochemical and physiological indicators of behavioral impairment in salmonids exposed to chlorpyrifos and copper

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