Index Catalog // ScholarsArchive@OSU

Integration of conservation tilage and cover crops in broccoli production systems of the Pacific Northwest

Creator:: O'Brien, Timothy John
Abstract:: Field and greenhouse experiments were conducted in 1996 and 1997 to evaluate the effects of integrating conservation tillage and cover cropping on broccoli production as well as agroecological parameters. A field experiment was conducted during 1996-97 at the Oregon State University Horticulture Research farm near Corvallis, OR. The specific objectives...
Resource Type:: Masters Thesis
Full Text:: approved: ^., _ I John M. Luna Field and greenhouse experiments were conducted in 1996 and

Impact of cover crops on weed abundance and nitrogen contribution in broccoli, Brassica oleracea var. italica, production systems in the maritime Pacific Northwest

Creator:: Angustia, Segundo Nova
Resource Type:: Masters Thesis
Full Text:: . Production Systems in the Maritime Pacific Northwest. Abstract approved: —» 1/ ■ i /—*— John M. Luna

Improving nitrogen management with cover crops in organic broccoli production

Creator:: Garrett, Amy
Abstract:: Legume cover crops can serve as important sources of nitrogen (N) in sustainable agriculture and can be economically beneficial when fertilizer inputs are reduced without a yield reduction. Synchronizing N mineralization from organic materials with the needs of the subsequent crop is a challenge for organic growers. Predicting plant available...
Resource Type:: Masters Thesis
Full Text:: : _______________________________________________________________________ John M. Luna Legume cover crops can serve as important sources of nitrogen (N) in

Enhancement of biological control with beneficial insectary plantings

Creator:: Colley, Micaela Ruth
Abstract:: Five field experiments were conducted to evaluate the relative attractiveness of potential beneficial insectary plants to aphidophagous hover flies and parasitic Hymenoptera and the effectiveness of interplanting selected flowering plants in a broccoli field to enhance biocontrol of the cabbage aphid and green peach aphid. In 1996 we established a...
Resource Type:: Masters Thesis
Full Text:: Control with Beneficial Insectary Plantings. Abstract approved: rr r—i v—sj John M. Luna Five

Relationships of exotic species and wildfire to the threatened plant Silene spaldingii

Creator:: Menke, Carolyn A.
Abstract:: In the canyon grasslands of Garden Creek Ranch Preserve in Idaho, where the threatened plant Silene spaldingii occurs and invasion by the exotic species Centaurea solstitialis and Bromus tectorum is proceeding rapidly, I examined environmental and community patterns of site invasion, and evaluated the apparent influence of invasion on Silene...
Resource Type:: Masters Thesis
Full Text:: sincerely thank my committee members, Dave Pyke and John Luna for reviewing my manuscripts and offering

Modeling surface water and groundwater interactions near Milton-Freewater, Oregon

Creator:: Petrides Jimenez, Aristides Crisostomos
Abstract:: The gravel aquifer of the Oregon side of Walla Walla River Basin has a strong hydrologic connection to surface water through a series of springs, unlined irrigation canals, the Walla Walla River, numerous wells and, since 2004, artificial recharge to the shallow aquifer using infiltration basins. The finite element Integrated...
Resource Type:: Masters Thesis
Full Text:: Cuenca and Dr. John Selker who reviewed and followed the development of this model very closely

Winterfat seed viability and dormant season livestock grazing

Creator:: Leary, Ryan
Abstract:: Krascheninnikovia lanata (winterfat) is a valuable forage species with an average of 10% crude protein during winter when there are few nutritious options for livestock and wildlife. However, excessive grazing throughout the west has negatively impacted survival of winterfat stands. We hypothesized that four years rest from dormant season livestock...
Resource Type:: Masters Thesis

Ecology of the predatory mite, Pergamasus quisquiliarum Canestrini (Acari: Mesostigmata)

Creator:: Groth, Eric M.
Abstract:: Pergamasus quisquiliarum Canestini is a polyphagous predatory mite that has been shown to feed on the economically important arthropod, Scutigerella immaculata Newport (Symphyla: Scutigerellidae), Collembola, Diptera larvae, Enchytraeid worms, and miscellaneous other soil organisms. This study examined the feeding behavior of P. quisquiliarum, the effects of cover cropping and tillage...
Resource Type:: Masters Thesis
Full Text:: my committee members, Drs. Ralph Berry, Jeffery Miller, and John Luna, and Alan Bakalinsky. I would

Strategic investments in agricultural industries and Oregon's economic development

Creator:: Koong, Dennis T
Abstract:: This research is concerned with the current debate among Oregonians on how to improve the standard of living and accelerate economic development in Oregon. The main question is what economic activities make Oregon, and regions within Oregon grow? To find out where Oregon's economic strength and weaknesses lie, first we...
Resource Type:: Masters Thesis
Full Text:: . James Cornelius, Dr. Dick Johnston, and my graduate school representative, Dr. John Luna, for the time

Aggregation, bulk density, compaction, and water intake responses to winter cover cropping in Willamette Valley vegetable production

Creator:: Buller, Gilbert L.
Abstract:: Many agricultural sustainability issues are related to biological processes which are central to the ecological function of soils. Soil physical properties are the architecture in which these processes are carried out. Cover crops hold promise as one of the techniques which can ameliorate poor soil structure and improve bulk density...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Integration of conservation tilage and cover crops in broccoli production systems of the Pacific Northwest

Impact of cover crops on weed abundance and nitrogen contribution in broccoli, Brassica oleracea var. italica, production systems in the maritime Pacific Northwest

Improving nitrogen management with cover crops in organic broccoli production

Enhancement of biological control with beneficial insectary plantings

Relationships of exotic species and wildfire to the threatened plant Silene spaldingii

Modeling surface water and groundwater interactions near Milton-Freewater, Oregon

Winterfat seed viability and dormant season livestock grazing

Ecology of the predatory mite, Pergamasus quisquiliarum Canestrini (Acari: Mesostigmata)

Strategic investments in agricultural industries and Oregon's economic development

Aggregation, bulk density, compaction, and water intake responses to winter cover cropping in Willamette Valley vegetable production

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Contributor

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Location

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search