A5002934464- Turfgrass Adaptation and Management
- Plant Pathogens and Fungal Diseases
- Weed Control and Herbicide Applications
- Rangeland and Wildlife Management
- Plant Disease Management Techniques
- Seedling growth and survival studies
- Plant and Fungal Interactions Research
- Ophthalmology and Visual Impairment Studies
- Plant Disease Resistance and Genetics
- Plant and fungal interactions
- Pesticide and Herbicide Environmental Studies
- Diverse Educational Innovations Studies
- Seed Germination and Physiology
- Ophthalmology and Visual Health Research
- Yeasts and Rust Fungi Studies
- Plant pathogens and resistance mechanisms
- Berry genetics and cultivation research
- Telemedicine and Telehealth Implementation
- Heavy Metal Exposure and Toxicity
- Web and Library Services
- Cannabis and Cannabinoid Research
- Fungal Plant Pathogen Control
- Allelopathy and phytotoxic interactions
- Cassava research and cyanide
- Plant Surface Properties and Treatments
Pennsylvania State University
2016-2025
Eye Care Associates
2022-2024
Ross School
2020
University of Connecticut
2006-2009
Planta
2003-2009
University of Maryland, College Park
2002-2008
American Optometric Association
2006
Central Michigan University
2006
Dow Chemical (United States)
2005
Great Lakes Environmental Center
1989
You may be able to identify several ways students can prepared take an upcoming test, but which are ethical use? There available materials that you purchase and use prepare for a test: Are they effective is it them? What constitutes ethically acceptable test preparation procedure?
Abstract Annual bluegrass ( Poa annua L.) poses significant challenges in managed turfgrass systems due to its adaptability and resilience. This study explores publicly available information on performance of several organic or nonsynthetic herbicides for annual control address this issue. Through a keyword frequency analysis using Google Scholar, the prevalence weed treatments was examined, revealing association between search engines, key phrases, management types general dominance...
Abstract The ability of Poa annua L. to adapt most turfgrass environments extends its develop resistance commonly used herbicides. Herbicide resistant P. is almost epidemic proportions. loss once viable chemical‐based treatments pushes practitioners towards more expensive, and often less effective, control strategies. This management guide focuses on integrated weed (IWM) practices for herbicide resistance—what it how overcome it. Also discussed are mechanisms documentation common...
Abstract Dollar spot, caused by Clarireedia spp., is one of the major challenges in golf course management. While individual cultural practices such as adequate nitrogen fertilization, thatch removal, aeration, and dew removal (DR) can reduce dollar spot severity, there are limited reports across multiple locations on effectiveness integrating for improved suppression. Field studies were conducted Wisconsin, Ohio, Pennsylvania, Virginia to evaluate efficacy urea fertilizer, DR, a plant...
Purpose: An evidence basis is lacking but needed to compare reading ability outcomes after magnification device training remotely via telerehabilitation versus in office. Methods: A multicenter randomized controlled trial at academic centers and vision rehabilitation private practices 61 visually impaired adults or in-office 1 4 months dispensing new portable electronic, hand-held, stand optical magnifiers. Telerehabilitation included loaner equipment for Zoom videoconferencing with remote...
ABSTRACT Annual bluegrass ( Poa annua L.; ABG) can be a major weed problem in golf course turf. Research‐based information on the seasonal emergence patterns of ABG is limited. The objectives this four‐year field study were (i) to determine Maryland, (ii) peak period(s) emergence, and (iii) date estimated percentage seedlings emerged when rate declines. found emerge between August May two Maryland roughs. A majority (50–70%) seedling occurred late September mid‐October, germination generally...
Chemical management of dollar spot in turf may lead to the development Sclerotinia homoeocarpa populations with reduced fungicide sensitivity. The objective this study was determine scope S. insensitivity fungicides commonly used control on golf courses northeastern United States. A total 965 and 387 isolates from intensively or individually sampled sites, respectively, were evaluated for vitro sensitivity iprodione, propiconazole, thiophanate-methyl. Mean baseline sensitivities iprodione...
Plain Language Summary Poa annua is a troublesome weed in turfgrass areas such as golf courses, athletic fields, lawns, and sod farms. Controlling P. made more difficult by the growing problem of herbicide resistance, inherited ability plants to survive applications that would normally be lethal. Researchers from 13 academic institutions collected 866 populations different states systems better understand extent this problem. Collections were divided treated with four herbicides one plant...
Grey leaf spot, caused by M agnaporthe oryzae , causes severe damage on perennial ryegrass ( L olium perenne ) turf. In this study, the effects of relative humidity RH 88 to 100% at 28°C) infection, colonization and conidiation . were investigated in controlled chambers. Results showed that threshold for successful infection was ≥92% 28°C. The advancement tissue further examined with a green fluorescent protein GFP )‐tagged strain. No appressorium formation found when inoculum incubated ≤...
Dollar spot is one of the most common diseases golf course turfgrass and numerous fungicide applications are often required to provide adequate control. Weather-based disease warning systems have been developed more accurately time applications; however, they tend be ineffective not currently in widespread use. The primary objective this research was develop a new weather-based system advise control dollar activity across broad geographic climactic range. from data collected at field sites...
The intrinsic signatures of Cannabis species to bioaccumulate non-essential harmful heavy metals (HMs) such as As, Pb, Cr, and Hg are determined by their high tolerance, weedy propensities, phenotypic plasticity attributes, pedoclimatic stress adaptation in a biota. This unstructured meta-analysis study provides details cannabis involvement HMs phytoremediation, new insights into transportation distribution, homeostasis, health implications contaminated product. A blueprint agronomic...
Management of dollar spot (incited by Sclerotinia homoeocarpa) on golf course fairways is increasingly challenging. The objectives this study were to determine the influence mowing frequency and plant growth regulators (PGRs) severity residual efficacy fungicides for control spot. Two 4-month-long studies conducted 'Putter' creeping bentgrass (Agrostis stolonifera) maintained as a fairway at University Connecticut. Treatments arranged in three-by-three-by-five factorial that assessed (2, 4,...
Purpose: We examined different methods to reduce the burden of accessing technology for videoconferencing during telerehabilitation magnification devices visually impaired. Methods: During studies over past 5 years, vision rehabilitation providers assessed and gave training impaired participants with newly dispensed at home who connected Zoom via loaner tablets or smartphones assistance from (phase 1; n = 10) investigators by phone, 2; 11) local Lions Club volunteers in participants' homes,...
Due to complex interactions between social and ecological systems, herbicide resistance has classic features of a “wicked problem”. Herbicide-resistant (HR) Poa annua poses risk sustainably managing U.S. turfgrass but there is scant knowledge guide its management. Six focus groups were conducted throughout the United States gain understanding socio-economic barriers adopting herbicide-resistance management practices. Professionals from major sectors (golf courses, sports fields, lawn care,...
Natural organic fertilizers require microbial degradation for nitrogen (N) release, but their ability to promote rapid turfgrass establishment has not been well documented in newly constructed sand-based rootzones. This 2-year field study evaluated the influence of two general fertilizer and soil amendment programs effect on quality three creeping bentgrass ( Agrostis stolonifera L.) cultivars—`Crenshaw', `Penn G-2', `Providence'. Turf was grown a 4 sand: 1 sphagnum peat (by volume) rootzone...
Annual bluegrass (Poa annua L.) (ABG) is considered by many turfgrass managers to be an intractable weed problem, particularly in creeping bentgrass (Agrostis stolonifera (CBG) fairways. Bispyribac-sodium (BPS) labeled for the control of ABG, but it can elicit objectionable levels chlorosis CBG. Little information exists regarding longevity chlorosis, other potential phytotoxic effects or ability BPS ABG The primary objectives this field study were determine if elicited could masked...
Lawns provide valuable ecological, economic and social services. Both the quantity quality of turfgrass affect level services delivered. Unwanted weed infestations can degrade lawn decrease value these for users others. For example, Brosnan et al. reported that athletic fields with cover not only decreased aesthetic but also resulted in increased surface hardness a concomitant increase potential athlete injuries soil erosion. Contemporary research pertaining to pest influences on management...
Dollar spot (Sclerotinia homoeocarpa) is a severe disease problem on creeping bentgrass (Agrostis stolonifera) fairways. The objective of this study was to evaluate the effects dew removal and mowing frequency fungicide performance for dollar control. In 2009 2010, an experiment involving daily or no removal, (2, 4, 6 days week-1), fungicides (chlorothalonil, propiconazole, iprodione) conducted maintained as fairway. Daily resulted in fewer infection centers (IC) compared with not removing...
Dollar spot, caused by Sclerotinia homoeocarpa , is a severe disease of highly maintained turfgrass. Improving the efficacy fungicides when applied in relatively low water volumes may be possible through optimization nozzle selection. The objectives this research were to evaluate fungicide delivered five different types and elucidate any potential interactions between mode activity type. Research was conducted at four locations Pennsylvania Connecticut 2005. Chlorothalonil (contact activity)...
Smooth crabgrass [ Digitaria ischaemum (Schreber) Schreber ex Muhlenb.] is an invasive weed of cool-season turfgrasses. Previous research has demonstrated that quinclorac effective postemergence herbicide for control, but performance been erratic in some regions. Furthermore, may elicit objectionable levels discoloration creeping bentgrass ( Agrostis stolonifera L.). The objectives this 3-year field study were to determine optimum rates and timings applications provide consistent control...
Repeated fungicide applications are typically required to provide adequate control of dollar spot on golf courses and may shift Sclerotinia homoeocarpa populations from sensitive insensitive or resistant an active ingredient. The objective this study was characterize the geographic distribution fungicide-insensitive, fungicide-resistant, multiple (MFI) S. in Pennsylvania surrounding region. isolates (n = 681) were collected 45 different research facilities. Each isolate evaluated vitro...
The ability to provide regional information turfgrass professionals in a timely format can help them avoid potential problems. While traditional, hard-copy based Extension materials wealth of information, the communicate brief yet current updates be invaluable. Two Web-based blogs were developed managers on local (iaTURF) and international level (Turf Diseases). Data indicated that reached an average 34.9 148.4 people per day. use is effective means deliver geographically diverse large...