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Annual bluegrass (Poa annua L.) emergence under different residue management practices in perennial ryegrass and determination of resistant and susceptible annual bluegrass germination under controlled temperature and moisture

Creator:: Schuster, Matthew D.
Abstract:: With the loss of field burning the amount of crop residue that remains in perennial ryegrass fields has increased. As the amount of crop residue remaining in the field increases so does annual bluegrass. This has resulted in the increased use of herbicides to control annual bluegrass. However, this increased...
Resource Type:: Masters Thesis
Full Text:: - straw, bale/flail, and vacuum sweep. Perennial ryegrass seed yield and annual bluegrass seed

Multiple pest suppression with cover crops in strawberry

Creator:: Datta, Braja Bandhu
Abstract:: The experiment was conducted to compare multiple pest (weed, soil arthropod and diseases) suppression by cereal cover crops in 'Selva' and 'Totem' strawberry. In addition, perlite was used to compare improvement of soil and root aeration which might modify strawberry black root rot complex. Small-seeded summer annual weeds were suppressed...
Resource Type:: Masters Thesis
Full Text:: in both F. virginiana and F. chiloensis, including architecture, disease and pest resistance

Herbicidal agents as possible aids for roguing diseased seed-potato plants

Creator:: Barnes, George Lewis
Resource Type:: Dissertation
Full Text:: ) • The seed crop is used locally or sGld to states adjoining Ore• gon, and also Hawaii, Alaska, and

Improve the Oregon potato crop : avoid diseased seed

Creator:: Bailey, F. D. and Oregon Agricultural College. Extension Service
Abstract:: Published 1915. 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:: crop and potatd market. ç Healthy Seed, planted on Clean Soil, will help to drive them out. your part

Seedborne Phytophthora infestans : effect of pathogen clonal lineage and potato cultivar on seed transmission of late blight and plant growth responses

Creator:: Partipilo, Heather M.
Abstract:: Seed piece to plant transmission of the potato late blight pathogen, Phytophthora infestans, occurred with isolates of the clonal lineages US-8 in Oregon and US-11 in Washington in field trials. Average transmission rate across potato cultivars was 0.5 and 2.4% with US-8, and 0.8 and 1.0% with US-11 in 1999...
Resource Type:: Masters Thesis
Full Text:: trigger sporulation and the spread of the disease. Planting of infected seed pieces contributes to risk

Inheritance of resistance to the lentil strain of pea seedborne mosaic virus in Pisum sativum L.

Creator:: Kasimor, Kathryn T.
Abstract:: The inheritance mode of pea-resistance to the Lentil Strain of Pea Seedborne Mosaic Virus (PSbMV-L) was studied. In addition, commercial pea cultivars, Plant Introduction (P.I.) lines and Oregon State University (OSU) breeding lines were tested for susceptibility to this virus. These lines were also tested for their reaction to Bean...
Resource Type:: Masters Thesis
Full Text:: commercial pea crop by decreasing yield, it is the seed producers and plant breeders who are most affected

Impact of insects on seed production in a Douglas-fir seed orchard in Oregon

Creator:: Dombrosky, Scott A.
Abstract:: The impact of various factors on seed production in a Douglas-fir (Pseudotsuga menziesii) seed orchard in western Oregon was examined by monitoring the fate of seeds in thirty cones, stratified into three crown levels, on each of ten trees during the 1984 growing season. Cones were examined monthly between April...
Resource Type:: Masters Thesis
Full Text:: and Talbert 1984). The greater the control exerted over the parentage of the resulting seed, the

Lodging control and yield enhancement in Morex spring barley with paclobutrazol treatment

Creator:: Morrison, Laura A.
Abstract:: Lodging in cereals can cause significant decreases in yield. It is both a problem in susceptible cereal cultivars with a tall-stemmed, weak-strawed growing habit and in lodging-resistant cereal cultivars when they are grown under high-nitrogen, high-moisture regimes. Plant growth regulators (PGR's) are chemical growth retardants that offer a method of...
Resource Type:: Masters Thesis
Full Text:: Master of Science in Crop Science presented on June 11, 1985 Title: LODGING CONTROL AND YIELD

Status, distribution and seasonal variation of filbert aphid resistance to selected insecticides in the Willamette Valley, Oregon

Creator:: Katundu, Juma
Abstract:: Levels of resistance to six selected insecticides of eleven field populations of the filbert aphid Mvzocallis coryli (Goetze) were determined by using the leaf-dip residue technique. Test insecticides included compounds widely used in commercial filbert orchards, namely, carbaryl, diazinon, endosulfan, phosalone, fenvalerate and oxydemetonmethyl. Aphid samples were collected within a...
Resource Type:: Masters Thesis
Full Text:: , Painter and Jones 1958). Due to the presence of the pest complex described above and the need to reduce

The control of rodents

Creator:: Stratton, Clyde H.
Resource Type:: Undergraduate Thesis
Full Text:: germination of the seed. CHAPTER IV DESCRIPTION AND CONTROL OF THE MOST IMPORTANT FORMS OF RODENTS IN

ScholarsArchive@OSU

Annual bluegrass (Poa annua L.) emergence under different residue management practices in perennial ryegrass and determination of resistant and susceptible annual bluegrass germination under controlled temperature and moisture

Multiple pest suppression with cover crops in strawberry

Herbicidal agents as possible aids for roguing diseased seed-potato plants

Improve the Oregon potato crop : avoid diseased seed

Seedborne Phytophthora infestans : effect of pathogen clonal lineage and potato cultivar on seed transmission of late blight and plant growth responses

Inheritance of resistance to the lentil strain of pea seedborne mosaic virus in Pisum sativum L.

Impact of insects on seed production in a Douglas-fir seed orchard in Oregon

Lodging control and yield enhancement in Morex spring barley with paclobutrazol treatment

Status, distribution and seasonal variation of filbert aphid resistance to selected insecticides in the Willamette Valley, Oregon

The control of rodents

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