Index Catalog // ScholarsArchive@OSU

Applied nitrogen effects on yellow mustard (Sinapis alba L.) production in the Willamette Valley

Creator:: DuVal, Alyssa Susan
Abstract:: Nitrogen management recommendations for yellow mustard (Sinapis alba L.) production in the high rainfall environment of Oregon's Willamette Valley (WV) are not available. The objectives of this investigation were: (i) to determine the effect of applied nitrogen (N) on seed yield and yield components in yellow mustard, and (ii) to...
Resource Type:: Masters Thesis
Full Text:: the Willamette Valley protected district cultivated for Oregon State University research purposes

Seed yield and yield components of Pennfine perennial ryegrass (Lolium perenne L.) as influenced by time and rate of spring nitrogen and chemical dwarfing

Creator:: Young, William C. (William Clyde)
Abstract:: Seed yield in perennial ryegrass is the product of yield components that develop during the life of the plant. Crop yield potential is defined by the number of fertile tillers, spikelets per spike, and florets per spikelet. It has been shown that perennial ryegrass realizes only a small percentage of...
Resource Type:: Dissertation
Full Text:: desirable turf characteristics. The Willamette Valley of Oregon produces nearly all of the perennial

Residue management and yield characteristics of fine fescue seed crops

Creator:: Schumacher, Derek David
Abstract:: Chewings fescue [Festuca rubra L. subsp. fallax (Thuill.) Nyman] is a desired turfgrass with dense sod forming capabilities and superior shade tolerance. Thermal residue management (open-field burning) has traditionally been used to remove post-harvest residue and maintain seed yield over the life of the stand. However, alternative non-thermal residue management...
Resource Type:: Masters Thesis
Full Text:: -harvest residue management of fine fescue seed crops in the Willamette Valley has consisted of open-field

Spring irrigation management of tall fescue (Festuca arundinacea Schreb.) seed crops

Creator:: Orthel, Krista D.
Abstract:: Later maturing cultivars and increased ability to apply irrigation have led to inquiries by producers about proper irrigation management in tall fescue (Festuca arundinacea Schreb.) seed crops. The literature reveals little information about irrigation of perennial grass seed crops in general, and none about tall fescue in particular. Willamette Valley...
Resource Type:: Masters Thesis
Full Text:: fescue in particular. Willamette Valley producers need research-based information on which to base

Growth and development of three meadowfoam (Limnanthes spp.) lines

Creator:: Fiez, Timothy E.
Abstract:: Meadowfoam (Limnanthes R. Br. spp.), a source of C₂₀ and C₂₂ fatty acids, is a new industrial oilseed crop adapted to the Willamette Valley of Oregon. Increased oil yield per land area may increase the rate of meadowfoam commercialization. Using two half-sib L. floccosa x L. alba lines, 85-765 and...
Resource Type:: Masters Thesis
Full Text:: of the Willamette Valley of Oregon, the poorly drained "white land", annual ryegrass (Lolium

Producing fiber flax using modern machinery and field retting

Creator:: Kennedy, Ralph C.
Abstract:: Fiber flax (Linum usitatissimum L.) production in the Willamette Valley ended in Oregon around 1957 before newly developed technology and fiber cultivars were available. The purpose of this research was to explore the use of modern methods and new cultivars. Field studies were conducted to evaluate cultivars and optimum cultural...
Resource Type:: Masters Thesis
Full Text:: Willamette Valley ended in Oregon around 1957 before newly developed technology and fiber cultivars were

Growth and reproduction of annual bluegrass (Poa annua) in response to trinexepacethyl or prohexadione-calcium at multiple rates and application timings

Creator:: Faletti, Matthew T.
Abstract:: Field experiments were conducted in 2002 and 2003 in the Willamette Valley of Oregon to investigate the effects of two plant growth regulators on the growth and reproduction of the weed annual bluegrass. Previous research suggested that the plant growth regulator prohexadione-calcium hastened senescence of annual bluegrass. Another plant growth...
Resource Type:: Masters Thesis
Full Text:: : Field experiments were conducted in 2002 and 2003 in the Willamette Valley of Oregon to investigate the

Phenology and monitoring of the cabbage maggot, Delia radicum (L.), in brassica root crops

Creator:: Dreves, Amy J.
Abstract:: In Oregon’s northern Willamette Valley, cabbage maggot (CM), Delia radicum (L.) (Diptera: Anthomyiidae) often renders Brassica root crops unmarketable. Scheduled insecticides are the only current control. Studies were conducted to: 1) describe and characterize spring emergence of CM flies and their seasonal flight activity relative to degree-day (DD) accumulations; 2)...
Resource Type:: Dissertation
Full Text:: (.). ......................................................................8 3.1. Map offield study sites in northern Wilamete Valley, Oregon (Clackamas and Marion counties

Trinexapac-ethyl and open-field burning in creeping red fescue (Festuca rubra L.) seed production in the Willamette Valley

Creator:: Zapiola, Maria Luz
Abstract:: Open-field burning has been an effective, economical, and widespread method of post-harvest residue management in creeping red fescue seed production in the Willamette Valley since the late 1940s. However, the use of field burning has been legislatively restricted due to air quality and safety issues. The foliar-applied plant growth regulator...
Resource Type:: Masters Thesis
Full Text:: Open-Field Burning in Creeping Red Fescue (Festuca rubra L.) Seed Production in the Willamette Valley

Potential impacts of canola (Brassica napus L.) on vegetable seed production in the Willamette Valley of Oregon

Creator:: Quinn, Michael P.
Abstract:: In the Willamette Valley of Oregon, a combination of the need for rotational crops and an increased desire for biofuel production created interest in planting Brassica napus (canola). However, questions were raised arisen over the potential damage canola production could have on the preexisting Brassica vegetable seed industry. To address...
Resource Type:: Dissertation
Full Text:: POTENTIAL IN THE WILLAMETTE VALLEY OF OREGON ............................................ ...... ..41

ScholarsArchive@OSU

Applied nitrogen effects on yellow mustard (Sinapis alba L.) production in the Willamette Valley

Seed yield and yield components of Pennfine perennial ryegrass (Lolium perenne L.) as influenced by time and rate of spring nitrogen and chemical dwarfing

Residue management and yield characteristics of fine fescue seed crops

Spring irrigation management of tall fescue (Festuca arundinacea Schreb.) seed crops

Growth and development of three meadowfoam (Limnanthes spp.) lines

Producing fiber flax using modern machinery and field retting

Growth and reproduction of annual bluegrass (Poa annua) in response to trinexepacethyl or prohexadione-calcium at multiple rates and application timings

Phenology and monitoring of the cabbage maggot, Delia radicum (L.), in brassica root crops

Trinexapac-ethyl and open-field burning in creeping red fescue (Festuca rubra L.) seed production in the Willamette Valley

Potential impacts of canola (Brassica napus L.) on vegetable seed production in the Willamette Valley of Oregon

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