Index Catalog // ScholarsArchive@OSU

Conifer phytotoxicity and vegetation control efficacy of ten selected herbicides

Creator:: Coate, Jeremy E.
Abstract:: Ten herbicides (atrazine, azafenidin, chlorsulfuron, clopyralid, hexazinone, imazapic, imazapyr, metsulfuron, pendimethalin, and sulfometuron) were evaluated for phytotoxicity in first-year seedlings of eight conifer species (Douglas-fir, grand fir, noble fir, redwood, Sitka spruce, western hemlock, western red cedar, and western white pine). Six of these herbicides (atrazine, clopyralid, hexazinone, imazapyr, metsulfuron,...
Resource Type:: Masters Thesis

Effects of vegetation control, stock size, fertilization, and soil moisture on the shoot and root development of Douglas-fir seedlings

Creator:: Burney, Owen T.
Abstract:: The overall purpose of this study was to examine the root and shoot development of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings at two distinct time periods in seedling establishment (after I and 3 growing seasons) in response to fertilizer, stock size, vegetation control, and soil moisture treatments. Two separate experiments...
Resource Type:: Masters Thesis
Full Text:: Development of Douglas-Fir Seedlings Abstract approved: - Signature redacted for privacy. {7 Robert W

Effects of fertilization, vegetation control, and sulfur on swiss needle cast and growth of coastal Douglas-fir saplings

Creator:: Crane, Gabriel A.
Abstract:: A series of studies and replicated field sites were implemented in the Oregon Coast Range within Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) sapling plantations infected with varying levels of Swiss needle cast (SNC) caused by the fungus, Phaeocryptopus gaeumannii (Rhode) Petrak (PG). This research was conducted to understand the effects of...
Resource Type:: Masters Thesis
Full Text:: Abstract approved:1~1'1 /\ Signature redacted for privacy. .1/L,/ ( (' Robert W. Rose, Jr. A senes

Effect of soil type, fertilizer, and soil moisture on 1+0 Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] seedlings

Creator:: Arellano Ogaz, Eduardo
Abstract:: Soil physical, chemical, and biological components as well as climate and physiographic characteristics can interact to have a great effect on forest regeneration and seedling growth response to different establishment activities. The objective of this project was to increase the understanding of the interactions between soil type, controlled-release fertilizers, and...
Resource Type:: Masters Thesis
Full Text:: ~v_a"T"c_y_. ---- Robert W. ~ose, Jr(/ Soil physical, chemical, and biological components as well as

Effects of fall lifting and long-term freezer storage on ponderosa pine seedling physiology and quality

Creator:: Omi, Steven Katsu
Abstract:: Two-year-old ponderosa pine (Pinus ponderosa Dougl. ex Laws.) seedlings from two Oregon seed sources were lifted three times in the fall, stored below freezing (-1.5°C), and compared to seedlings that were handled conventionally (spring lifting followed by short-term cold storage, 2-4°C). Based on patterns of budbreak in a greenhouse and...
Resource Type:: Dissertation

Effects of fertilization at the time of planting on field performance of 1+1 Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] seedlings

Creator:: Alzugaray Oswald, Patricio Javier
Abstract:: To study the combined effects of seedling quality and fertilization at the time of planting, three experiments were established in western Oregon during the winter of 2000. The first experiment investigated the effect of preplanting rootvolume and fertilization rate on the field performance of 1+1 Douglas-fir seedlings during two growing...
Resource Type:: Masters Thesis
Full Text:: -"------~---~------- l Robert W. Rose, Jr. To study the combined effects of seedling quality and fertilization at the

Chlorophyll fluorescence as a measure of cold hardiness and freezing stress in 1 + 1 Douglas-fir seedlings : response to seasonal changes in the nursery

Creator:: Fisker, Susan E.
Abstract:: Two-year old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings from two seed lots of different predicted hardiness levels were grown in two separate nurseries. Seedlings were lifted every four weeks from early October 1991 through March 1992 and exposed to controlled freezing temperatures. Fluorescence emissions of the seedlings were measured prior...
Resource Type:: Masters Thesis

Effects of water stress on phenology, physiology, and morphology of containerized Douglas-fir (Psuedotsuga menziesii (mirb.) Franco) seedlings

Creator:: Khan, Shafiqur Rehman
Abstract:: Approximately 3-4 month-old containerized Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seedlings (seed zone 262 and 271) were subjected to 6 moisture stress treatments (65, 53, 41, 29, 17 and 7% soil water content by volume of dry soil) starting July 4 to September 22, 1991 at Forest Research Laboratory's greenhouse at...
Resource Type:: Masters Thesis

Transplant shock in stored and unstored 2+0 Douglas-fir seedlings : effect of initial root volume and soil water content

Creator:: Haase, Diane L.
Abstract:: Transplant shock was induced by applying a range of soil water contents to unstored and cold-stored two-yearold (2+0) bareroot Douglas-fir seedlings graded by root volume. Moisture stress had the greatest influence on morphological characteristics commonly associated with transplant shock. Terminal growth, lateral growth, stem diameter growth, and needle length increased...
Resource Type:: Masters Thesis

Fall fertilization effects on Douglas-fir seedling quality

Creator:: Birchler, Todd M.
Abstract:: Coastal Douglas-fir (Psuedotsuga menziesii (Mirb.) Franco) 1 + 1 seedlings were fertilized with two types of fertilizers (NB4NO3+K2SO4 and (NH.4)2 SO4+KC1) at four rates (0, 80, 160, 320 kg N and K/ha) split over 3 application dates (September 19, October 13, November 1, 1996). By January 10, total Kjeldahl nitrogen...
Resource Type:: Masters Thesis
Full Text:: on Douglas-fir Seedling Quality. Signature redacted for privacy. Abstract approved: Robert W

ScholarsArchive@OSU

Conifer phytotoxicity and vegetation control efficacy of ten selected herbicides

Effects of vegetation control, stock size, fertilization, and soil moisture on the shoot and root development of Douglas-fir seedlings

Effects of fertilization, vegetation control, and sulfur on swiss needle cast and growth of coastal Douglas-fir saplings

Effect of soil type, fertilizer, and soil moisture on 1+0 Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] seedlings

Effects of fall lifting and long-term freezer storage on ponderosa pine seedling physiology and quality

Effects of fertilization at the time of planting on field performance of 1+1 Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] seedlings

Chlorophyll fluorescence as a measure of cold hardiness and freezing stress in 1 + 1 Douglas-fir seedlings : response to seasonal changes in the nursery

Effects of water stress on phenology, physiology, and morphology of containerized Douglas-fir (Psuedotsuga menziesii (mirb.) Franco) seedlings

Transplant shock in stored and unstored 2+0 Douglas-fir seedlings : effect of initial root volume and soil water content

Fall fertilization effects on Douglas-fir seedling quality

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