Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 19 of 19 for “"Annual bluegrass"”.
-
Management of annual bluegrass and bermudagrass in creeping bentgrass greens
… (< 10%) by the following spring. Differences in annual bluegrass control were observed between locations. Methiozolin applications at the Rawls Golf Course exhibited 57 to 86% annual bluegrass control, regardless of application rate or timing. Control increased as applications were made later in …
-
Postemergence control of annual bluegrass with mesotrione in Kentucky bluegrass
Annual bluegrass (Poa annua L. var Hausskn Timm) is a common grass weed species in turf. A lack of environmental stress tolerance, combined with prolific seed production and a highly competitive growth habit makes annual bluegrass difficult to maintain, but also difficult to get rid of from an …
-
Phenology and Management of Annual Bluegrass Weevil on Virginia Golf Courses
Annual bluegrass weevil (Listronotus maculicollis Kirby) (Coleoptera: Curculionidae) (ABW) is a major pest of annual bluegrass (Poa annua L.) and creeping bentgrass (Agrostis stolonifera L.) on golf courses in the northeastern United States. The asynchronous life cycle makes managing ABW difficult, …
-
Creeping bentgrass response to plant growth regulating substances and annual bluegrass competition
… it becomes invaded with a persistent weed, annual bluegrass (Poa annua L.). Studies were conducted on a predominately annual bluegrass area managed as a putting green to attempt to quantify the impacts of plant growth regulator, seeding rate" and season on the success of introducing creeping …
-
The Effect of Fe-sulfate on Annual Bluegrass, Silvery Thread Moss, and Dollar Spot Populations Colonizing Creeping Bentgrass Putting Greens
Annual bluegrass (Poa annua L.) is the most problematic weed to control in creeping bentgrass (Agrostis stolonifera L.) putting greens. The objective of this study was to transition a mixed putting green stand of annual bluegrass and creeping bentgrass to a monoculture by using fertilizers and …
-
Influence of Annual Bluegrass on Putting Green Trueness and Control of Weedy Poa Species in Kentucky Bluegrass and Creeping Bentgrass Turf
Annual bluegrass (Poa annua L.) and roughstalk bluegrass (Poa trivialis L.) are among the most troublesome grass weeds on golf courses throughout the United States. Herbicides for selective control of these weeds in cool-season fairways are limited and ineffective. Methiozolin is a new isoxazoline …
-
Prohexadione Calcium for Turfgrass Management and Poa annua Control and Molecular Assessment of the Acetolactate Synthase Gene in Poa annua
… the most expensive practice on golf courses and annual bluegrass (Poa annua L) is the most challenging weed problem in professional turf. The plant growth regulators trinexapac-ethyl and paclobutrazol are commonly used in VA for these two costly and challenging jobs. Prohexadione calcium (PC) is …
-
Evaluating methiozolin programs for golf putting greens and investigating potential modes of action
Annual bluegrass is a winter annual grass that is problematic on golf putting greens due to its light green color, prolific seedhead production and intolerance to stress. On creeping bentgrass putting greens, herbicides for annual bluegrass control are limited. A new herbicide, methiozolin, …
-
Ecological Aspects of Four Turfgrass Nematode Genera on Putting Green Turf in Illinois
… nudus on root growth of bentgrass and annual bluegrass; (2) the effect and interaction of T. nudus and Magnaporthe poae on bentgrass and annual bluegrass at 24C, 28C, and 30C; (3) the vertical distribution of T. nudus, Criconemella curvata, Helicotylenchus cornurus, and Hoplolaimus …
-
Exploring Novel Adjuvants and Herbicide Synergies: Pyridate and Ethoxylated Lecithin for Improved Control of Turfgrass Weeds
… kyllinga, yellow nutsedge, herbicide-resistant annual bluegrass, and smooth crabgrass—while keeping grass safe and vibrant. The first study checked if pyridate harms seven types of turfgrass, like bermudagrass and Kentucky bluegrass. The second examined how well pyridate controls kyllinga and …
-
Optimizing Laser and Liquid Nitrogen Treatments for Weed Control in Turfgrass Systems
… plants of goosegrass (Eleusine indica) and annual bluegrass (Poa annua). Four field trials were conducted across two sites in Blacksburg, VA, testing seven LN doses (0–5.1 mL). LN reduced green cover rapidly (3 days after treatment) in both species, with 90% control achieved at ≥2.2 mL. …
-
Metabarcoding pollen to identify allergenic species of grasses (Poaceae) and ragweed (Ambrosia spp.) across six monitored sites in South Africa
… resulted in 48 Poaceae species, with Poa annua (annual bluegrass) and Cynodon dactylon (Bermuda grass) being two of the three species classified by both barcodes. BLAST classifications produced the largest biodiversity, identifying 307 unique Poaceae species with 19 species common to both …
-
Metabarcoding pollen to identify allergenic species of grasses (Poaceae) and ragweed (Ambrosia spp.) across six monitored sites in South Africa
… resulted in 48 Poaceae species, with Poa annua (annual bluegrass) and Cynodon dactylon (Bermuda grass) being two of the three species classified by both barcodes. BLAST classifications produced the largest biodiversity, identifying 307 unique Poaceae species with 19 species common to both …
-
Lateral Movement of Herbicides on Golf Course Fairways and Effects on Bentgrass Greens
… was also assessed. Rimsulfuron was absorbed by annual bluegrass and perennial ryegrass equivalently and persisted equally on turf foliage. Water extractable rimsulfuron decreased from 60% at 10 minutes after treatment to 40% at 96 hours after treatment. A substantial amount of stable rimsulfuron …
-
Evaluation of Novel Techniques to Control Annual Grasses in Intensively Managed Turfgrass Systems
Annual grassy weeds are problematic in intensively managed turfgrass systems due to a lack of selective and affordable control options. Four projects were conducted from 2020-2023 to evaluate novel techniques for Annual bluegrass (Poa annua L.), goosegrass (Eleusine indica L. Gaertn.), and smooth …
-
Developing remote sensing approaches for integrated pest and pollinator management in turfgrass
… application of insecticides to combat the annual bluegrass weevil, therefore reducing their presence in the environment. The use of SIPI could highlight potential pollinator friendly habitats and therefore assist superintendents in the development of their IPPM plan.
-
Chemical and biological control of silvery threadmoss on creeping bentgrass putting greens
… moderate pathogenicity of S. rolfsii to annual bluegrass but not to "¥Penn A4"" creeping bentgrass. Both organisms have potential to be effective biological controls for silvery threadmoss; however, host specificity indicates Alternaria sp. may be a better choice. Data from these …
-
Physiological and Environmental Basis of Turfgrass and Weed Response to Mesotrione Formulations
… plant species when applied to foliage or roots. Annual bluegrass (Poa annua L.) absorbed 2- to 4-fold more radioactivity than Kentucky bluegrass (Poa pratensis L.). Both species absorbed less radioactivity through roots than through foliage and root absorbed radioactivity was more often exuded …
-
Evaluation of fine fescues as alternative golf course fairway turfgrasses
… bentgrass (Agrostis stolonifera, L.), Kentucky bluegrass (Poa pratensis, L.), annual bluegrass (Poa annua, L.), and/or perennial ryegrass (Lolium perenne, L.) on fairways. Grass species exist that are more sustainable than those currently being used for golf course fairway turf. Low-input fine …