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Articles 31 - 40 of 40
Full-Text Articles in Horticulture
Nitrogen And Phosphorus Remediation Of Aquatic Garden Plants In Laboratory-Scale Constructed Wetlands., Robert Polomski
Nitrogen And Phosphorus Remediation Of Aquatic Garden Plants In Laboratory-Scale Constructed Wetlands., Robert Polomski
All Dissertations
This research investigated the potential of growing marketable aquatic garden plants that also remediate nursery and greenhouse runoff in a subsurface-flow constructed wetland. The cost of wastewater treatment is offset by the production of revenue-generating horticultural crops. Aquatic garden plants that offer the dual benefits of nutrient remediation and aesthetic value may also be planted in bioretention basins, rain gardens, buffer zones, and filter strips.
Fifteen commercially available aquatic garden plants were grown for 8 weeks in a laboratory scale subsurface wetland in a greenhouse and received nitrogen (N) and phosphorus (P) from Hoagland's nutrient solution every two days for …
Overseeded Bermudagrass Spring Trasition Response To Mowing Height, Nitrogen Rate, Sulfonylurea Herbicide, And Allelopathy, Raymond Mccauley
Overseeded Bermudagrass Spring Trasition Response To Mowing Height, Nitrogen Rate, Sulfonylurea Herbicide, And Allelopathy, Raymond Mccauley
All Theses
Hybrid bermudagrass [Cynodon transvaalensis Burtt-Davey x C. dactylon (L.)
Pers.] is the preferred turf for golf courses and athletic fields across the southern United
States because of its dark green color, fine texture, good wear and drought tolerance, and
excellent recuperative rate. Despite its many attributes, bermudagrass goes dormant and
turns an unsightly brown color when soil temperatures fall below 10-13oC (50-55super>oF).
Perennial ryegrass (Lolium perenne L.) is often overseeded into bermudagrass in the fall
to sustain acceptable turf quality through the spring months. However, perennial ryegrass
aggressively competes with the bermudagrass for resources in the spring and potentially …
Root-Zone Characteristics And Bermudagrass Response To Saline Water Delivered By Subsurface Drip Irrigation, Kelsey Gorman
Root-Zone Characteristics And Bermudagrass Response To Saline Water Delivered By Subsurface Drip Irrigation, Kelsey Gorman
All Theses
Population growth and recurring drought conditions have placed high demands on freshwater resources in South Carolina. Thus, turfgrass irrigation management practices that reduce freshwater use while maintaining quality turfgrass need to be identified.
Previous research in the arid Southwest USA documents water conservation on bermudagrass by using saline water sources and subsurface drip irrigation (SDI) systems. A field-scale facility was constructed in Florence, SC, to evaluate `Tifway' bermudagrass
(Cynodon dactylon (L.) Pers. X C. transvaalensis Burtt Davy) quality, growth, and rootzone characteristics when subjected to saline (3.15 dS m-1) or freshwater (0.07 dS m-1) irrigation, SDI lines spaced 41 or …
Dwarfing Mechanisms Of Prunus Species As Interstems And Rootstocks On Peach [Prunus Persica (L.) Batsch] Tree Vegetative Growth And Physiology, Antonio Weibel
Dwarfing Mechanisms Of Prunus Species As Interstems And Rootstocks On Peach [Prunus Persica (L.) Batsch] Tree Vegetative Growth And Physiology, Antonio Weibel
All Dissertations
The use of small trees in orchard systems reduces manual labor (pruning, thinning and harvesting), and induces precocity, thus making high-density plantations economically advantageous, which has elicited an interest in size-controlling rootstocks. However, the mechanisms involved in the reduction of scion growth by the rootstock are not well understood. The main objective of this study was to gain a better understanding of the dwarfing mechanism induced by size-controlling peach rootstocks. The relationship among different rootstocks (dwarfing to invigorating range) as to stored carbohydrates, tree water status, and interstem and grafting height was evaluated on young and mature `Redhaven' and `Redtop' …
Impacts Of Root Invigoration And Its Individual Components On The Performance Of Red Maple (Acer Rubrum), Kelby Fite
Impacts Of Root Invigoration And Its Individual Components On The Performance Of Red Maple (Acer Rubrum), Kelby Fite
All Dissertations
The Root Invigoration process involves soil decompaction with an air tool, amendment with organic matter and prescription fertilizer, and mulching. In the current study, we measured soil chemical and physical properties, tree characteristics, and root system responses to this process and its individual components. Treatments included Root Invigoration (AFM), mulch only (M), fertilization only (F), Airspade® tillage only (A), and an untreated control (C). The experiment was conducted from 2005-2007 at four urban sites: Anderson, SC; Boston, MA; Myrtle Beach, SC and Pittsburgh, PA. Soil strength was initially reduced by Airspade®, mulch and AFM; however only AFM-treated soils sustained this …
Physiological Response And Nutrient Recovery Of Cool-Season Turfgrasses Under Various Environmental Stresses, William Sarvis
Physiological Response And Nutrient Recovery Of Cool-Season Turfgrasses Under Various Environmental Stresses, William Sarvis
All Theses
Potassium (K) is an essential plant nutrient commonly applied to increase creeping bentgrass tolerance to environmental stresses and maintain overall turfgrass stand health. Limited research defining the K requirement of creeping bentgrass under heat and drought stress exists. Furthermore, research investigating K, calcium (Ca), and magnesium (Mg) recovery under abiotic stress has been inconsistent. To build on previous research and investigate the differences between liquid and granular K fertilization, experiments were conducted to evaluate the performance of liquid and granular K carriers in conjunction with liquid calcium and magnesium on their ability to suppress summer bentgrass decline of creeping bentgrass …
Peach Tree Root Demography And Soil Microbial Characteristics In Peach Replant Soils, Shann Tanner
Peach Tree Root Demography And Soil Microbial Characteristics In Peach Replant Soils, Shann Tanner
All Theses
Peach replant disorder (PRD) is a serious problem for peach growers throughout the United States. PRD refers to the pattern of reduced growth and yield observed in young peach trees planted on soil previously cropped with peaches. The conventional treatment for PRD, pre-plant soil fumigation with methyl bromide (a broad-spectrum biocide) adequately controls the disorder. This suggests that PRD results from harmful interaction(s) between the soil biotic community and peach roots. However, the specific causal agents of PRD are still unknown.
Methyl bromide is a known contributor to ozone depletion, and is only available to U.S. growers through Critical Use …
Hydraulic Resistance: A Determinant Of Short Term Stomatal Conductance Signaling In Disparate Xylem Anatomy Of Red Maple (Acer Rubrum L.) And Shumard Oak (Quercus Shumardii Buckl.), William Inman
All Theses
Recent work has shown that stomatal conductance (gs) and net photosynthesis (Anet) are responsive to the hydraulic conductance of the soil to leaf pathway (Xp). However, no study has compared xylem anatomical differences under controlled conditions to directly evaluate the whole plant hydraulic and chemical response to manipulations of Xp. Two tree species with differing xylem structures were used to study the effect of systematic manipulations in Xp that elevated xylem hydraulic resistance. Simultaneous measures of gs, Anet, bulk leaf abscisic acid concentration, leaf water potential, and whole plant transpiration were taken under controlled environment conditions. Shumard oak, a ring …
Thatch Control, Winter Painting, And Plant Growth Regulator Management On Golf Course Putting Greens, Steven Long
Thatch Control, Winter Painting, And Plant Growth Regulator Management On Golf Course Putting Greens, Steven Long
All Theses
No abstract provided.
Long-Term Evaluation Of Liquid Vs. Granular Nitrogen Fertilization On Creeping Bentgrass [Agrostis Stoloniferous L. Var. Palustris Huds.] And Hybrid Bermudagrass [Cynodon Dactylon (L.) Pers. X C. Transvaalensis Burtt-Davy] Performance, Frederick Totten
All Dissertations
Limited turfgrass research comparing the efficiency of foliar to granular fertilizers exists. To expand upon previous research and to determine advantages and disadvantages between dry and liquid fertilizers applied to turf, research was conducted at Clemson University to compare the efficiency of three nitrogen (N) carriers (100% granular, 100% liquid, and 50% granular + 50% liquid) using N rates ranging from 98 to 390 kg ha-1 on growth and performance of creeping bentgrass and ultra-dwarf bermudagrass.
Studies were conducted in 2003 and 2004 to evaluate liquid and/or granular N fertilization on turfgrass quality, clipping yield, and root biomass of `L-93` …