Index Catalog // ScholarsArchive@OSU

Paclobutrazol and nutrient treatment effects on ovation perennial ryegrass

Creator:: Turner, J. Kevin
Abstract:: Rapid tiller and root production can improve seedling survival and benefit stand establishment of perennial ryegrass (Lolium perenne L.) in commercial seed fields. Environmental conditions after establishment and inherent morphological factors combine to reduce the commercially harvested yield below the theoretical potential yield. These studies were conducted to determine if...
Resource Type:: Dissertation
Full Text:: perennial ryegrass AN ABSTRACT OF THE THESIS OF J. Kevin Turner for the degree of Doctor of Philosophy in

Seed Development in Orchardgrass (Dactylis glomerata L.) in Relation to Plant Growth Regulators and Spring Nitrogen

Creator:: Morad, Mohammed M.
Abstract:: Orchardgrass (Dactylis glomerata L.) is an important seed crop, but unlike other cool-season perennial grass seed crops such as perennial ryegrass (Lolium perenne L.) and tall fescue [Schedonorus arundinaceus (Schreb.) Dumort.], seed yields have not increased over time so there is considerable room for improvement. Research suggests that plant growth...
Resource Type:: Dissertation
Full Text:: . Anderson and Carol J. Garbacik. Nicole Anderson and Carol J. Garbacik performed field work and some of

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:: development, without stimulating excessive tillering (Hampton, 1983a). However, limited success was achieved

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:: , Hampton and McLaren, 1982). More recently evidence has been accumulating for the plant growth retardant

Flowering, seed maturation, and harvest timing for turf-type tall fescue

Creator:: Andrade, Ronaldo Pereira de
Resource Type:: Dissertation
Full Text:: according to rust intensity. Disease control with fungicides is recommended to avoid yield losses (Hampton

Effect of Plant Growth Regulator and Irrigation on Physiological and Harvest Maturity of Red Clover in Relation to Seed Quality

Creator:: Angsumalee, Duangporn
Abstract:: Red clover (Trifolium pratense L.) seed yield can be affected by plant growth regulators (PGR) and irrigation; however, the effects of these factors on physiological maturity (PM), harvest maturity (HM), and seed quality are unknown. The objectives of this study were to: 1) determine how irrigation and trinexapac-ethyl (TE, a...
Resource Type:: Dissertation
Full Text:: to longevity in the soil and residual activity on subsequent crops (Hampton, 1996). More recently

Spring Nitrogen, Plant Growth Regulator, and Defoliation Effects on Seed Production in Two Fine Fescue (Festuca rubra L.) Species

Creator:: Anderson, Nicole P.
Abstract:: One important cool-season perennial grass seed crop grown in Oregon is fine fescue (Festuca rubra L.). Open-field burning has been used for many decades to manage pests, cycle nutrients, and stabilize yield, in fine fescue seed fields, especially as stands age. Legislative restrictions currently limit open-field burning to 6,070 hectares...
Resource Type:: Dissertation
Full Text:: the seed. Hampton (1986) also evaluated effects of CCC on perennial ryegrass and also found that

Physiological responses of creeping red fescue to stubble management and plant growth regulators

Creator:: Meints, Paul David
Abstract:: Legislation to reduce open field burning in grass seed fields within the Willamette valley of western Oregon changed established production practices. In the creeping grasses such as Kentucky bluegrass (Poa pratensis L.) and creeping red fescue (Festuca rubra L.) non-thermal management resulted in reduced yield. Studies were conducted to examine...
Resource Type:: Dissertation
Full Text:: are precursors to other forms of GA in the biosynthesis pathway. Hampton and Hebblethwaite (1985

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:: beyond optimum levels leads to lodging (Hebblethwaite and Ivins, 1977; Hampton et al., 1983) and to

Differential sensitivity of Italian ryegrass and rice cultivars to fenoxaprop

Creator:: Hassan, Gul
Resource Type:: Dissertation

ScholarsArchive@OSU

Paclobutrazol and nutrient treatment effects on ovation perennial ryegrass

Seed Development in Orchardgrass (Dactylis glomerata L.) in Relation to Plant Growth Regulators and Spring Nitrogen

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

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

Flowering, seed maturation, and harvest timing for turf-type tall fescue

Effect of Plant Growth Regulator and Irrigation on Physiological and Harvest Maturity of Red Clover in Relation to Seed Quality

Spring Nitrogen, Plant Growth Regulator, and Defoliation Effects on Seed Production in Two Fine Fescue (Festuca rubra L.) Species

Physiological responses of creeping red fescue to stubble management and plant growth regulators

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

Differential sensitivity of Italian ryegrass and rice cultivars to fenoxaprop

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