Sujan Dawadi

ORCID: 0000-0002-4911-1807
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Research Areas
  • Plant Disease Management Techniques
  • Forest Insect Ecology and Management
  • Plant Pathogens and Fungal Diseases
  • Urban Heat Island Mitigation
  • Plant Physiology and Cultivation Studies
  • Hemiptera Insect Studies
  • Insect-Plant Interactions and Control
  • Plant Pathogens and Resistance
  • Plant-Derived Bioactive Compounds
  • Insect behavior and control techniques
  • Fungal Plant Pathogen Control
  • Plant Parasitism and Resistance
  • Plant Disease Resistance and Genetics
  • Fire effects on ecosystems
  • Urban Green Space and Health
  • Species Distribution and Climate Change
  • Turfgrass Adaptation and Management
  • Plant and fungal interactions
  • Plant responses to elevated CO2
  • Entomological Studies and Ecology
  • Insect and Arachnid Ecology and Behavior
  • Plant Virus Research Studies
  • Insect Utilization and Effects

Tennessee State University
2019-2025

North Carolina State University
2023

State Street (United States)
2021-2022

Vascular streak dieback (VSD) in redbud is a growing issue causing significant losses for nursery growers the United States. Causal agent of VSD not yet confirmed, but Ceratobasidium sp. has been frequently isolated from plants exhibiting symptoms, including vascular streaking, stunted growth, leaf scorch, defoliation, top and death. In 2023, field trial McMinnville, TN, assessed fungicide effectiveness against one-year-old Eastern plants. The were monitored symptoms throughout season....

10.1094/php-01-25-0001-pdmr article EN Plant Health Progress 2025-02-24

Vascular Streak Dieback (VSD) in redbud has caused significant losses the nursery production United States, although causal agent not yet been confirmed. However, Ceratobasidium sp. detected association with VSD-related symptom, including leaf scorching, vascular streaking and defoliation. A field trial conducted McMinnville, TN 2023 evaluated effectiveness of fungicides against symptoms one-year-old Eastern (Cercis canadensis) plants. The plants were observed for VSD throughout growing...

10.1094/php-01-25-0002-pdmr article EN Plant Health Progress 2025-03-12

Vascular streak dieback (VSD) is an emerging concern in the production of woody ornamentals, specifically redbud, U.S.A. Infected plants exhibit a common set symptoms, including leaf scorch, tip dieback, and vascular streaking that creates marbled pattern stem cross-section. This report evaluates efficacy fungicides for control VSD Eastern redbud McMinnville, TN. Leaf defoliation, phytotoxicity were evaluated area under disease progress curve was calculated all treatments. Results from this...

10.1094/php-01-25-0008-pdmr article EN Plant Health Progress 2025-03-12

Urban habitats can alter tree physiology in ways that make trees more susceptible to insect pests. We examined how urban conditions (e.g., impervious surfaces and warming) affected the soft scale insect, European fruit lecanium, Parthenolecanium corni Bouché (Hemiptera: Coccidae) health of thornless honeylocust (Gleditsia tricanthos L. var. inermis) Indianapolis, Indiana, USA. Hot cool study sites were selected based on surface air temperatures obtained from thermal LANDSAT-8 images overlaid...

10.1016/j.biocontrol.2023.105178 article EN cc-by Biological Control 2023-02-02

Abstract BACKGROUND The flatheaded appletree borer ( Chrysobothris femorata Olivier) (FHAB) is a native pest of fruit, shade and nut trees throughout the United States. Use cover crops an effective management tool for some key insect pests in vegetable cereal production systems, but its impact woody ornamental systems has not been investigated. goal this study was to evaluate effectiveness winter crop FHAB nursery production. Red maple Acer rubrum L.) grown under four treatment regimes...

10.1002/ps.5310 article EN Pest Management Science 2019-01-04

Soilborne pathogens are a significant economic problem for nursery production in the Southeastern United States. The goal of this study was to determine impact cover crops on soilborne disease suppressiveness such systems. Soils from red maple (Acer rubrum L.) plantation fields grown with and without were sampled, either while growing (pre-disked) or post-season, following crop incorporation into soil (post-disked). Greenhouse bioassays conducted using seeds inoculated (with Rhizoctonia...

10.3390/agronomy9110753 article EN cc-by Agronomy 2019-11-14

The purpose of this study was to evaluate fire ant venom alkaloids and an alarm pheromone analog against several plant pathogens, including Botrytis cinerea, Fusarium oxysporum, Phytophthora nicotianae, P. cryptogea, Pseudomonas syringae, Phytopythium citrinum, Rhizoctonia solani, Sclerotonia rolfsii, Xanthomonas axonopodis, X. campestris. All pathogens were tested red imported alkaloid extract compound for growth inhibition in vitro assay. inhibited fungal oomycete pathogens. Neither the...

10.3390/pathogens10060659 article EN cc-by Pathogens 2021-05-27

Cropping practices can affect the complement of arthropod pests present in production. The impact cover cropping on key red maple (Acer rubrum [L.]) (Sapindaceae) nursery was evaluated. Cover has been identified as a sustainable management method for pest, flatheaded appletree borer (Chrysobothris femorata [Olivier]) (Buprestidae), but crop other non-target production also must be taken into account when determining usefulness pest tool. In addition to borer, important southeastern United...

10.1653/024.102.0130 article EN cc-by Florida Entomologist 2019-04-11

Abstract In the northernmost latitude of North America, evergreen bagworm, Thyridopteryx ephemeraeformis (Haworth), distribution is limited by overwintering temperatures. Urban impervious surfaces such as roads, buildings and parking lots can warm microclimates create ecological temperature gradients that have potential to increase winter survival insects. To test this hypothesis, we evaluated bagworms over microclimatic conditions. Bagworms live within spindle-shaped bags constructed from...

10.1093/jue/juac014 article EN cc-by Journal of Urban Ecology 2022-01-01

10.1603/ice.2016.112028 article EN 2016 International Congress of Entomology 2016-01-01
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