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Grazing duration effects on seed yield of annual ryegrass (Lolium multiflorum L.)

Creator:: Young, William C. (William Clyde)
Abstract:: Spring grazing of annual ryegrass (Lolium multiflorum L.) seed fields with sheep is a common practice in the Willamette Valley of Oregon. However, the effect of grazing on seed yield in Oregon has not previously been investigated. This experiment was designed to determine the effects of duration of spring grazing...
Resource Type:: Masters Thesis
Full Text:: Annual Ryegrass (Lolium multiflorum L.) Redacted for privacy Abstract Approved: D. O. Chilcote Spring

CER and leaf characteristics of four tall fescue (Festuca arundinacea Schreb.) selections differing in forage yield

Creator:: Cohen, Cynthia Joy
Abstract:: Gas exchange, leaf area development, leaf anatomy and stomatal characteristics of four tall fescue selections differing in forage yield were examined to provide further insight into characteristics associated with yield differences of these selections. Winter-growing TFM 26 and TFM 16, the highest and lowest-yielding selections, respectively, and summer-growing selections TFK...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: Redacted for Privacy Dr. D. 0. Chilcote Gas exchange, leaf area development, leaf

Floral induction and reproductive development in selected perennial ryegrass cultivars

Creator:: Gangi, Ali Salih
Resource Type:: Masters Thesis
Full Text:: IN SELECTED PERENNIAL RYEGRASS CULTIV.RS Redacted for PrivacyAbstract approved: D. 0. Chilcote An

Growth and reproductive development in selected cultivars of Kentucky bluegrass given different durations of exposure to floral inductive conditions

Creator:: Turner, J. Kevin
Abstract:: Kentucky bluegrass (Poa pratensis L.) cultivars are known to differ quantitatively in their photothermal floral inductive requirements. The extent to which these requirements are met influences the potential for subsequent panicle exsertion. A better understanding of the inductive requirements as they vary among cultivars would aid in the selection and...
Resource Type:: Masters Thesis
Full Text:: Abstract Approved: D. O. Chilcote Kentucky bluegrass (Poa pratensis L.) cultivars are known to differ

Temperature effects on growth and nutrient concentration in tall fescue (Festuca arundinacea, Schreb.) selections differing in forage yield

Creator:: Rizzio, Rioh
Abstract:: This study was undertaken to better understand plant characteristics related to high and low forage yield in tall fescue selections as affected by temperature. Dry matter distribution into yield components in three different temperature regimes was evaluated. Root growth, dark respiration and nutrient concentration were also examined. The four diverse...
Resource Type:: Masters Thesis
Full Text:: ARUNDINACEA, SCHREB.) SELECTIONS DIFFERING IN FORAGE YIELD Abstract approved: Redacted for Privacy D. O

Growth and forage quality of tall fescue (Festuca arundinacea schreb.) and perennial ryegrass (Lolium perenne L.) as affected by mefluidide

Creator:: Manurung, Sabam Oloan
Abstract:: Field study with 5 tall fescue genotypes treated at the vegetative growth stage, with 0, 0.28, 0.56, and 0.84 kg/ha of mefluidide was initiated in July, 1980. The regrowth of these plants were again treated at the booting growth stage in April, 1981, with the same rates of mefluidide as...
Resource Type:: Masters Thesis
Full Text:: : Dr. D.O. Chilcote Field study with 5 tall fescue genotypes treated at the vegeta- tive growth stage

Floret fertility and seed yield in selected perennial ryegrass cultivars as affected by time and rate of nitrogen (N) application

Creator:: Gangi, Ali Salih
Abstract:: To increase efficiency of seed production, it is important to understand the effects of nitrogen (N) fertilizer rate and time of application. In particular, the effects on floret fertility should be examined since only a small proportion of florets actually produce harvestable seed. For these reasons, experiments were conducted in...
Resource Type:: Dissertation
Full Text:: RATE OF NITROGEN APPLICATION Abstract approved: Redacted for Privacy D.O. Chilcote To increase

Effects of growth retardant and nitrogen level on growth, development and yield of Yamhill wheat

Creator:: Nounamo, Laurent
Abstract:: Increases in wheat production due to breeding may be reaching a plateau. The application of N-fertilizer beyond optimum levels leads to lodging and to an increase in tiller death. The use of plant growth regulators (retardants) may be an answer for future increases in production. Experiments were conducted in 1983...
Resource Type:: Dissertation
Full Text:: : D.O. Chilcote Increases in wheat production due to breeding may be reaching a plateau. 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:: . David 0. Chilcote Lodging in cereals can cause significant decreases in yield. It is both a problem in

Tillering, lodging, dry matter partitioning, and seed yield in ryegrass (Lolium spp.) as affected by the plant growth regulator paclobutrazol

Creator:: Hunter, James L.
Abstract:: Seed yield in ryegrass (Lolium spp.) is the product of the number of fertile tillers per unit area and seed weight per spike at maturity. These components of yield develop through a series of growth stages beginning with tiller bud initiation and finishing with seed filling. Environmental conditions during plant...
Resource Type:: Masters Thesis
Full Text:: express his appreciation to Dr. D. 0. Chilcote for serving as his major professor, for his support

ScholarsArchive@OSU

Grazing duration effects on seed yield of annual ryegrass (Lolium multiflorum L.)

CER and leaf characteristics of four tall fescue (Festuca arundinacea Schreb.) selections differing in forage yield

Floral induction and reproductive development in selected perennial ryegrass cultivars

Growth and reproductive development in selected cultivars of Kentucky bluegrass given different durations of exposure to floral inductive conditions

Temperature effects on growth and nutrient concentration in tall fescue (Festuca arundinacea, Schreb.) selections differing in forage yield

Growth and forage quality of tall fescue (Festuca arundinacea schreb.) and perennial ryegrass (Lolium perenne L.) as affected by mefluidide

Floret fertility and seed yield in selected perennial ryegrass cultivars as affected by time and rate of nitrogen (N) application

Effects of growth retardant and nitrogen level on growth, development and yield of Yamhill wheat

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

Tillering, lodging, dry matter partitioning, and seed yield in ryegrass (Lolium spp.) as affected by the plant growth regulator paclobutrazol

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