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Showing 1 to 16 of 16 for “"Poa annua"”.
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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 …
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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 …
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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 …
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The construction, irrigation and fertiliser nutrition of UK golf greens
… fertiliser. Ingress of the weed species Poa annua (L.) occurred mainly on the soil constructions and its rate of ingress was enhanced by increased nitrogen input. Golf ball roll and various aspects of their behaviour after impact onto the turf with simulated 5-iron flight characteristics …
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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. …
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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 …
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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 …
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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 …
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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, …
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Evaluation of fine fescues as alternative golf course fairway turfgrasses
… (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 fescue …
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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 …
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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 …
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Sub-Antarctic plant-soil interactions in a changing world: plant N acquisition and growth under warming on Marion Island
… four common grasses (Polypogon magellanicus, Poa cookii, Agrostis stolonifera, and Poa annua) from sub-Antarctic Marion Island (MI, -46.9, 37.8). I hypothesised that sub-Antarctic grasses acquire oN which affects plant growth relative to iN and that soil warming influences plant growth …
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Metabarcoding pollen to identify allergenic species of grasses (Poaceae) and ragweed (Ambrosia spp.) across six monitored sites in South Africa
… rbcL and ITS2 sequences identified 233 unique Poaceae species, including Lolium perenne (ryegrass), which was one of the 17 species identified by both barcodes. RDP classifications resulted in 48 Poaceae species, with Poa annua (annual bluegrass) and Cynodon dactylon (Bermuda grass) being two …
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Metabarcoding pollen to identify allergenic species of grasses (Poaceae) and ragweed (Ambrosia spp.) across six monitored sites in South Africa
… rbcL and ITS2 sequences identified 233 unique Poaceae species, including Lolium perenne (ryegrass), which was one of the 17 species identified by both barcodes. RDP classifications resulted in 48 Poaceae species, with Poa annua (annual bluegrass) and Cynodon dactylon (Bermuda grass) being two …
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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 …