A5043658614- Turfgrass Adaptation and Management
- Rangeland and Wildlife Management
- Plant Disease Management Techniques
- Plant Pathogens and Fungal Diseases
- Plant Disease Resistance and Genetics
- Seedling growth and survival studies
- Plant and Fungal Interactions Research
- Plant Growth Enhancement Techniques
- Horticultural and Viticultural Research
- Remote Sensing in Agriculture
- Plant and fungal interactions
- Plant pathogens and resistance mechanisms
- Marine and coastal plant biology
- Plant Physiology and Cultivation Studies
- Coconut Research and Applications
- Plant Pathogens and Resistance
- Dyeing and Modifying Textile Fibers
- Berry genetics and cultivation research
- Diverse Educational Innovations Studies
- Remote Sensing and LiDAR Applications
- Seaweed-derived Bioactive Compounds
- Peanut Plant Research Studies
- Weed Control and Herbicide Applications
- Regional Development and Environment
- Bryophyte Studies and Records
Virginia Tech
2016-2025
LogicMill Technology (United States)
2023
University of Georgia
2023
Rutgers, The State University of New Jersey
2023
Colorado State University
2023
Agri Food and Biosciences Institute
2007-2016
Hampton Roads Sanitation District
2013
Plant (United States)
2013
Dundee Dental Hospital
1933
Abstract Leaf area index (LAI) is the ratio of total one-sided leaf to ground area, whereas lateral growth (LG) measure canopy expansion. They are indicators for light capture, plant growth, and yield. Although LAI LG can be directly measured, this time consuming. Healthy leaves absorb in blue red, reflect green regions electromagnetic spectrum. Aerial high-throughput phenotyping (HTP) may enable rapid acquisition from reflectance these regions. In paper, we report novel models estimate...
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...
Abstract Peanut ( Arachis hypogaea L.) is an important food and oilseed crop in the United States worldwide with high net returns. However, input costs are (US$1,970–$2,220 ha −1 ), yield excess of 4,500 kg needed to offset costs. Since limited by biotic abiotic stresses, newer cultivars tolerance these stresses optimize yield. Plant height canopy architecture may affect water use plant disease resistance. measuring a time‐consuming process. Surface elevation models from red–green–blue (RGB)...
Journal Article Diatoms (recent and fossil) of the Tay district Get access David McCall, B.Sc., Ph.D. 1Botany Department, Technical College, Dundee Search for other works by this author on: Oxford Academic Google Scholar Botanical Linnean Society, Volume 49, Issue 328, January 1933, Pages 219–308, https://doi.org/10.1111/j.1095-8339.1933.tb00389.x Published: 23 December 2008
This study has demonstrated biorefining steps for ryegrass and silage at a pilot scale to extrude fibre cake the production of nanofibrillated cellulose (NFC), potentially green biomaterial replacing conventional fillers in manufacture polymer composites. Further treatments processed fibres with mechanical shearing, microfluidising, hydrochloric acid (HCl)/sulphuric four stage {ethylenediaminetetra-acetic acid, sodium hydroxide, hypochlorite HCl} hydrolysis yielded 43.8, 36.1, 25.6 39.8 kg...
Spectral reflectance measurements collected from hyperspectral and multispectral radiometers have the potential to be a management tool for detecting water nutrient stress in turfgrass. Hyperspectral collect hundreds of narrowband data compared that three ten broadband cheaper cost. been used create vegetation indices such as normalized difference index (NDVI) simple ratio (RVI) assess crop growth, density, fertility. Other band (WBI) (narrowband index) green-to-red (GRI) (both proposed...
Different Rhizoctonia species and anastomosis groups (AGs) have been reported to show variable sensitivity commercial fungicides. Thirty-six isolates of collected from turfgrasses were tested in vitro for formulations iprodione, triticonazole, pyraclostrobin. Tested represented R. solani AG 1-IB 2-2IIIB; W. circinata varieties zeae (Wcz) (Wcc); binucleate Rhizoctonia-like fungi (BNR) different locations Virginia Maryland. Each fungicide was added PDA medium obtain concentrations at 0, 0.1,...
Peanut (Arachis hypogaea L.) is an important food crop for the U.S. and world. The Virginia-Carolina (VC) region (Virginia, North Carolina, South Carolina) peanut-growing of U.S affected by numerous biotic abiotic stresses. Identification stress-resistant germplasm, along with improved phenotyping methods, are steps toward developing cultivars. Our objective in 2017 2018 was to assess mini-core collection desirable traits, a valuable source resistant germplasm under limited water conditions....
Abstract Spring dead spot ( Ophiosphaerella herpotricha, O. korrae, narmari ; SDS) is among the most destructive diseases of bermudagrass [ Cynodon dactylon (L.) Pers.] and hybrid C. x transvaalensis Burtt Davy) in Transition Zone United States. spot's primary causal agents States, korrae herpotricha , infect fall with symptoms appearing spring when winter dormancy breaks. Patches necrotic turfgrass often reoccur same location expand into surrounding areas. Chemical control options are...
Spring dead spot (SDS) (
Dollar spot (caused by Sclerotinia homoeocarpa F.T. Bennett) is a common disease of Agrostis stolonifera L. and especially devastating on putting greens. Sequential fungicide applications are often required throughout the growing season for adequate control. This research was conducted to determine if ferrous sulfate (FeSO 4 ) its elemental components capable reducing dollar development. Trials were established in situ vitro address this objective. Putting green trials Blacksburg, VA, during...
Ultradwarf bermudagrass (UDB) putting greens grown in subtropical and temperate climates can face elevated risk of winter injury from cold temperatures. Trinexapac-ethyl (TE) inhibits UDB growth potentially reducing spring green-up overexertion carbohydrate reserves for during the de-acclimation period. A field study was conducted to determine effect fall TE applications on visual quality color Virginia acclimation phase through phase. second controlled-environment how affected tolerance. In...
Abstract This study evaluates the effectiveness of fine‐tuning a semantic segmentation model to identify and quantify dollar spot in turfgrasses, most extensively managed researched disease turfgrasses worldwide. Using DeepLabV3+ model, recognized for its capability segment complex shapes integrate multi‐scale contextual information, research leveraged diverse dataset comprising various turfgrass species, stages, lighting conditions ensure robust training. The trained is able instances...
Tall fescue ( Festuca arundinacea ) and hybrid bluegrass Poa pratensis L. × arachnifera can both be successfully grown in the transition zone of United States. However, each grass has limitations. is susceptible to fungal pathogen Rhizoctonia solani, whereas slow establishment susceptibility weed infestations limit bluegrass. Previous studies have shown benefits combining kentucky with tall seeding mixtures. Research was conducted evaluate impact two combinations (one combination seeded at a...
Turfgrasses are measured aesthetically and by their ability to withstand stressors. Historically, researchers quantified acceptability visual quality, but inconsistencies necessitate the use of vegetation indices (VIs) as an objective measurement. Indiscernible relationships have been established between turfgrass canopy normalized difference index (NDVI) important variables such soil moisture leaf chlorophyll content. Alternative variable–specific in cropping systems. The water band (WBI)...
Tall fescue is a commonly used turfgrass in the temperate and transition zone areas of United States. During hot, humid summers, tall under stress susceptible to Rhizoctonia solani (brown patch) infection, causing turf thinning, leading encroachment from weeds, such as bermudagrass. Field trials were established evaluate effect mowing height fertility programs on disease severity bermudagrass fescue. Mowing at 10 cm resulted less than did 6-cm height. Increasing nitrogen fertilization level...
The need for water conservation continues to increase as global freshwater resources dwindle. Turfgrass mangers are adapting these concerns by implementing new tools reduce consumption. Time-domain reflectometer (TDR) soil moisture sensors can decrease usage when scheduling irrigation, but nonuniformity across unsampled locations creates irrigation inefficiencies. Remote sensing data have been used estimate stress in turfgrass systems through the normalized difference vegetation index...
Abstract The use of synthetic pigment‐containing products on golf playing surfaces by course superintendents has increased dramatically to provide green color and improve stress tolerance. Most turf colorants are synthesized from various phthalocyanine pigments, which share visible spectral properties with plant tissue. Vegetation indices, such as normalized difference (NDVI), commonly used researchers quantify health or quality. Research reports indicate that canopy reflectance is sometimes...