Index Catalog // ScholarsArchive@OSU

The effect of soil factors on glyphosate availability in soil

Creator:: Kawate, Michael Ken
Abstract:: Glyphosate (N-(phosphonomethyl)glycine) is an effective foliar-applied herbicide with broad-spectrum activity. Greenhouse and laboratory experiments were conducted to determine the importance of soil moisture, autoclaved soil, soil type, sphagnum peat, soil pH, added phosphorus, and plant residues on crop establishment and growth when glyphosate was applied before emergence of the crop....
Resource Type:: Dissertation

Effects of lactofen herbicide on cellular uptake of glyphosate herbicide in malva parviflora L.

Creator:: Wells, Barbara Heard
Abstract:: Time-course growth chamber studies were conducted on little mallow (Malva parviflora L.) to determine whether sublethal doses of lactofen (1'-(carboethoxy)ethyl-5-[2-chloro-4-(trifluoromethyl) phenoxy]-2- nitrobenzoate) would enhance uptake of glyphosate (N'-(phosphonomethyl) glycine) by altering membrane permeability. Lactofen-induced membrane peroxidation was determined by harvesting leaf discs, measuring stress ethylene evolution, and recording increases in...
Resource Type:: Dissertation

Sethoxydim herbicide in red fescue and bentgrass : levels and mechanisms of selectivity

Creator:: Butler, J. Hugh B.
Abstract:: The herbicide rate required to reduce growth by 50% (GR₅₀) of 11 cultivars of red fesue (Festuca rubra L. and F. rubra ssp. commutata) and for four cultivars of bentgrass (Agrostis tenuis Sibth. and A. stolonifera L. var. palustris) to sethoxydim (2-[1-(ethoxyimino) butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one) was determined in greenhouse and laboratory experiments....
Resource Type:: Dissertation

Persistence and accumulation of clopyralid (3,6-dichloropicolinic acid) in soil

Creator:: Tanphiphat, Karin
Abstract:: Field studies were started at Hyslop Farm, Corvallis, Oregon in 1984 to determine the soil persistence of the herbicide clopyralid (3,6-dichloropicolinic acid) under cropping situations. The herbicide was sprayed on bare soil at the proposed use rate of 0.14 kg/ha in the spring and on the same plots at a...
Resource Type:: Masters Thesis

A comparison of selected analyses for estimating environmental variation in early generations and advanced lines of wheat (Triticum aestivum L. em thell)

Creator:: Khan, Noor-ul Islam
Abstract:: This investigation was motivated by the introduction of the new nearest neighbour analyses which reportedly provided a better control of soil gradients than conventional experimental methods. Three nearest neighbour analyses and six other analyses were compared with the completely randomized design or the randomized complete block design in reducing the...
Resource Type:: Dissertation

Influence of leaf types on canopy architecture and grain yield in selected crosses of spring wheat Triticum aestivum L.

Creator:: Vanavichit, Apichart
Abstract:: The effects of erect leaf canopies on enhancing grain yield in wheat is not understood. The main objective of this study was to understand the effect of leaf angle on grain yield by comparing randomly derived-lines from crosses of erect and droopy leaf spring wheats. Nine traits associated with canopy...
Resource Type:: Dissertation

Biology and control of tuber oatgrass (Arrhenatherum elatius (L.) presl. var. Bulbosum (willd.) spenn.)

Creator:: Tanphiphat, Karin
Abstract:: Tuber oatgrass (Arrhenatherum elatius (L.) Presl. var. bulbosum (Willd.) Spenn.) is a perennial grass that often becomes a weed problem in Western Oregon. Control efforts using glyphosate often give unsatisfactory results. The effects of several factors on development of tuber oatgrass were investigated. Long days and cool temperatures (16/8h, 20/10C...
Resource Type:: Dissertation

Emergence and growth of nine accessions of diclofop-resistant Italian ryegrass (Lolium multiflorum L.) and multiple resistance to other herbicides

Creator:: Kunjo, Ebrima Madi
Resource Type:: Masters Thesis

A heuristic causal model of factors affecting age integrated/age segregated neighborhood preference during retirement

Creator:: Malroutu, Yamini Lakshmi
Abstract:: The purpose of this research was to determine a causal model of factors affecting age integrated/age segregated neighborhood preference during retirement. Data were anaLzed for 1299 preretirers in four states: Idaho, Michigan, Oregon, and Utah, collected in a mail survey in 1990 by the Western Regional Agricultural Experiment Station Committee...
Resource Type:: Dissertation

Pasture renovation with herbicide suppression of weeds and no-till seeding of orchardgrass

Creator:: Fitzsimmons, James P.
Abstract:: No-till pasture renovation can increase the quality and forage yield of underproductive pastures. Decreased erosion, lower costs, and less lost grazing time are advantages of no-till renovation compared to conventional renovation. Unwanted vegetation is first controlled with herbicides to decrease competition for introduced orchardgrass. Two field trials were conducted using...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

The effect of soil factors on glyphosate availability in soil

Effects of lactofen herbicide on cellular uptake of glyphosate herbicide in malva parviflora L.

Sethoxydim herbicide in red fescue and bentgrass : levels and mechanisms of selectivity

Persistence and accumulation of clopyralid (3,6-dichloropicolinic acid) in soil

A comparison of selected analyses for estimating environmental variation in early generations and advanced lines of wheat (Triticum aestivum L. em thell)

Influence of leaf types on canopy architecture and grain yield in selected crosses of spring wheat Triticum aestivum L.

Biology and control of tuber oatgrass (Arrhenatherum elatius (L.) presl. var. Bulbosum (willd.) spenn.)

Emergence and growth of nine accessions of diclofop-resistant Italian ryegrass (Lolium multiflorum L.) and multiple resistance to other herbicides

A heuristic causal model of factors affecting age integrated/age segregated neighborhood preference during retirement

Pasture renovation with herbicide suppression of weeds and no-till seeding of orchardgrass

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

Language

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search