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Articles 9571 - 9600 of 255501
Full-Text Articles in Entire DC Network
Color Variation In Strangalia Bicolor (Coleoptera: Cerambycidae), D. C.L. Gosling
Color Variation In Strangalia Bicolor (Coleoptera: Cerambycidae), D. C.L. Gosling
The Great Lakes Entomologist
[Excerpt]
Many species of Lepturinae are noted for their great variation in color, while some are quite uniform in coloration. Strangalia bicolor (Swederus) is one of the Iatter type and usually shows virtually no variation. The elytra are uniformly blue-black with the exception of the inflexed corner of the humerus which is reddish-yellow. The wings and eyes are black, and the rest of the beetle is entirely reddish-yellow. Until recently, the only variation I had observed was one female with a small, triangular, reddish-yellow spot on the basal margin of each elytron near the scutellum. Linsley and Chemsak (1977) recorded …
Boyeria Grafiana, A Rare Ohio Dragonfly (Odonata: Aeshnidae), T. E. Perry
Boyeria Grafiana, A Rare Ohio Dragonfly (Odonata: Aeshnidae), T. E. Perry
The Great Lakes Entomologist
[excerpt]
The intent of this paper is to record the dragonfly Boyeria grafiana Williamson as a resident Ohio species. The previous Ohio record for grafiana was based on a single male taken by E. E. Bogue at Orwell, Ashtabula County, Ohio, in September, 1894, and listed by Kellicott (1899) as Boyeria vinosa (Say). Hine (1913) updated some of Kellicott's work and identified the Orwell record as Boyeria grafiana, which had been described by Williamson in 1907.
Rev. Modestus Wirtner: Biographical Sketch And Additions And Corrections To The Miridae In His 1904 List Of Western Pennsylvania Hemiptera, A. G. Wheeler Jr., Thomas J. Henry
Rev. Modestus Wirtner: Biographical Sketch And Additions And Corrections To The Miridae In His 1904 List Of Western Pennsylvania Hemiptera, A. G. Wheeler Jr., Thomas J. Henry
The Great Lakes Entomologist
[Excerpt]
The Rev. Modestus Wirtner's (1904) list of western Pennsylvania Hemiptera remains as the only useful general account of this group for the state. Earlier, Rathvon (1869) had published a short list of species from Lancaster County, but because the identity of species referred to cannot be established, his list has limited value.
The Distribution Of Some Soil Arthropods In A Manipulated Ecosystem, James H. Shaddy, James W. Butcher
The Distribution Of Some Soil Arthropods In A Manipulated Ecosystem, James H. Shaddy, James W. Butcher
The Great Lakes Entomologist
[Excerpt] Soil cultivation practices and agricultural utilization affect soil animal populations in various ways. Gisin (1955) and Schalk (1968) concluded that the effect was minimal. Others observed a deleterious effect (Karg, 1956; Sheals, 1956; Strebel, 1957; Aleinikova and Utrobina, 1975; Edwards and Lofty, 1975). However, some soil animals appear to be benefited (Aleinikova and Utrobina, 1975; Edwards and Lofty, 1975). The effects of cultivation and many other factors have been discussed thoroughly in reviews by Christiansen (1964), Burges and Raw (1967), Butcher, et al. (1971), Ghilarov (1975), and Wallwork (1976).
Survey For Parasites Of The Introduced Pine Sawfly, Dlprlon Slmllls (Hymenoptera: Diprionidae), In Minnesota, L. C. Thompson, H. M. Kulman, W. D. Valovage
Survey For Parasites Of The Introduced Pine Sawfly, Dlprlon Slmllls (Hymenoptera: Diprionidae), In Minnesota, L. C. Thompson, H. M. Kulman, W. D. Valovage
The Great Lakes Entomologist
Diprion similis (Hartig) cocoons were collected at 24 sites in 14 counties in north and central Minnesota in 1975 to determine the current status of the parasite complex. The ichneumon Exenterus amictorius (Panzer) was by far the most abundant of the 16 parasites, with parasitization in excess of 44% in both sawfly generations. Parasitization by E. amictorius did not decrease substantially in the second generation, as was anticipated from previous studies. Monodontomerus dentipes (Dalman) (Torymidae) and Delomerista japonica diprionis Cushman (Ichneumonidae) were common only in the second generation. One specimen of Perilampus hyalinus Say (Perilampidae) was reared for the fust …
Distribution Of Acalymma Vittata And Diabrotica Virgifera (Coleoptera: Chrysomelidae) On Cucurbits, Catherine E. Bach
Distribution Of Acalymma Vittata And Diabrotica Virgifera (Coleoptera: Chrysomelidae) On Cucurbits, Catherine E. Bach
The Great Lakes Entomologist
The striped cucumber beetle, Acalymma vittata (Fabricius) and the western corn rootworm, Diahrotica virgifera LeConte, are of economic importance and utilize cucurbits, but to a different extent. A. vittata is a specialist on cucurbits during all stages of its life cycle, whereas D. virgifera feeds on cucurbits only as an adult. Much is known about the life history, feeding preferences, and control of each of these species (A. vittata: Gould, 1944, 1962; Harcourt and Cass, 1955; Wiseman, Hall, and Painter, 1962; D. virgifera: Chiang, 1973; Ludwig, 1975). However, no study has looked at possible interactions such as competition between the …
Invertebrate Predators Of Michigan Lepidoptera, M. C. Nielson
Invertebrate Predators Of Michigan Lepidoptera, M. C. Nielson
The Great Lakes Entomologist
[Excerpt]
For many years this author has been actively collecting Michigan Lepidoptera and generally observing insects in the field. Almost every season some predation of Lepidoptera by insects and their allies is seen. Unfortunately, many early observations went unrecorded in my field notebooks, but since the late 1950's I have made notations of these interesting encounters.
A Distinctive Dune Form Of The Marbled White Butterfly, Euchloe Olympia (Lepidoptera: Pieridae) In The Great Lakes Area, Warren Herb Wagner Jr.
A Distinctive Dune Form Of The Marbled White Butterfly, Euchloe Olympia (Lepidoptera: Pieridae) In The Great Lakes Area, Warren Herb Wagner Jr.
The Great Lakes Entomologist
[Excerpt]
The dunes along the shores of Lake Huron in the vicinity of Ipperwash Provincial Park, Port Franks, and Pinery Provincial Park, Ontario, are notable for their unusual vegetation and a number of interesting plants and animals. During studies of the peculiar, disjunctive populations of the dwarf hackberry tree (Celtis tenuifolia Nutt.) (Wagner, 1974), I became aware that the local population of marbled white, Euchloe olympia (Edwards), differed in a number of respects from the usual form with which I was familiar. Preliminary observations during the spring of 1975 suggested that the butterflies might even represent a distinct subspecies, so …
Development And Survival Of Saratoga Spittlebug Nymphs On Alternate Host Plants, Louis F. Wilson, George C. Heaton, Patrick C. Kennedy
Development And Survival Of Saratoga Spittlebug Nymphs On Alternate Host Plants, Louis F. Wilson, George C. Heaton, Patrick C. Kennedy
The Great Lakes Entomologist
\!hen abundant, the adult Saratoga spittlebug, Aphrophora smatogensis (Fitch), injures or kills young red pine, Pinus rerinovr Ait., and jack pine, P. banksiana Lamb. Its abundance depends greatly on the quantit). and quality of woody plants and forbs of the forest floor that senre a5 alternate hosts during the nymphal stages (Anderson, 1947; Ewan, 1961: Kennedy and Wilson, 1971; Secrest, 1944). Sweet-fern, Comptonia peregrina Coult., is the principal and most important alternate host (Kennedy and Wilson, 1971), but little is know-n about the value of other woody plants and forbs for supporting nymphal development. Therefore, \ve sought to examine the …
Parasites Of Lepidopterous Larvae In Alfalfa And Soybeans In Central Illinois, S. J. Roberts, W. K. Mellors, E. J. Armbrust
Parasites Of Lepidopterous Larvae In Alfalfa And Soybeans In Central Illinois, S. J. Roberts, W. K. Mellors, E. J. Armbrust
The Great Lakes Entomologist
During the 1971-72 soaing season sweep-net samples were taken to determine the major species of parasites and lepidopterous host larvae present in central Illinois soybeans and alfalfa. A trod of 27 primary Hymenoptera and Diptera parasites was collected from nine Lepidopterous species. Parasites were associated with all nine species of Ian-ae m alfalfa and soybeans. Apanteles flaviconchae Riley was responsible for over 87% of &e parasitism of Colias spp. larvae in both alfalfa and soybeans in 1971. The hyperparasites Mesochorus discitergus (Say) and M. arnericanus Cresson were recovered from fou~of dep rim= parasites Pathogens were found in six species of …
Temporomandibular Joint Osteoarthritis And Systemic Inflammation: A Cadaveric Study For Dental Insights, Nathan Kent Bs, David Patterson Bs, Alyssa Luu Bs, Samantha Pipkin Bs, Jason Ciccotelli Dpt, Phd, Jeremy James Dmd, Ms, Jessica Immonen Phd, Ms
Temporomandibular Joint Osteoarthritis And Systemic Inflammation: A Cadaveric Study For Dental Insights, Nathan Kent Bs, David Patterson Bs, Alyssa Luu Bs, Samantha Pipkin Bs, Jason Ciccotelli Dpt, Phd, Jeremy James Dmd, Ms, Jessica Immonen Phd, Ms
The Journal of Integrative Physiology
The objective of this study was to determine if gross signs of cadaveric osteoarthritis (OA) have
a tendency to present systemically and if this presentation includes pathology found at the
temporomandibular joint (TMJ). Signs of OA were then correlated to gross alterations of the aorta and common carotid arteries seen with atherosclerotic cardiovascular disease. Ipsilateral synovial joints including the TMJ, knee joint, radiocarpal joint and trapeziometacarpal (TMC) joint were all assessed for signs of OA in 4 cadaveric donors (3 males; 72, 82 and 92 years-old / 1 female; 89 years-old) using a validated scale of disease severity. A Grade …
The Legal System For Influencers On Social Media Platforms: A Comparative Study, Ahmad Ibrahim Ballal, Najem Riyad Al-Rabadi, Ma’Moun Rashed Al-Huneiti
The Legal System For Influencers On Social Media Platforms: A Comparative Study, Ahmad Ibrahim Ballal, Najem Riyad Al-Rabadi, Ma’Moun Rashed Al-Huneiti
Middle East Journal of Communication Studies
This study explores the legal regulation of social media influencers through a comparative analysis between French and Jordanian legislation. The research problem lies in the absence of a clear and comprehensive legal framework regulating influencers' growing role in shaping public opinion. Using the comparative analytical method, the study examines relevant legal texts and regulatory approaches in both jurisdictions. The findings highlight significant differences, with France enacting a specific law to govern influencer activities, while Jordan still relies on general legal provisions. The study recommends drafting a dedicated Jordanian law that outlines influencers' legal responsibilities and balances freedom of expression with …
Representations Of The Other In Hamas's Media Discourse During The "Al-Aqsa Flood" Operation: A Rhetorical Analytical Study, Enad Mamdouh Al-Zaben, Sabah Al Harahsheh
Representations Of The Other In Hamas's Media Discourse During The "Al-Aqsa Flood" Operation: A Rhetorical Analytical Study, Enad Mamdouh Al-Zaben, Sabah Al Harahsheh
Middle East Journal of Communication Studies
This study aimed to determine how the Hamas movement represented the "other" in its media discourse during the "Al-Aqsa Flood" operation. To achieve this goal, the study relied on the qualitative analytical approach, specifically rhetorical discourse analysis. The study sample included all Hamas's media spokesman speeches, between October 7, 2023, and January 1, 2024, numbering 11 speeches. The study results showed that Hamas's media discourse focused on portraying two main groups: "us" and "them." The "us" group included the Palestinian people in all their spectra. They were referred to using terms with positive connotations such as: "the steadfast," "the one …
Addressing Anxiety In The Pediatric Population: An Ot Perspective, Joshua D. Johnson, Mary Jan Greer, Wendy Tremaine, Justine Faghihifar
Addressing Anxiety In The Pediatric Population: An Ot Perspective, Joshua D. Johnson, Mary Jan Greer, Wendy Tremaine, Justine Faghihifar
Summer 2025 OTD Capstone Symposium
This capstone develops and evaluates a trauma-informed training for RBTs and caregivers in outpatient ABA clinics serving children with ASD and anxiety. Grounded in MOHO, the seven-module program teaches trigger→support mapping, sensory strategies, visual tools, and brief co-regulation routines. Findings show improved knowledge and confidence, with recommendations to embed a fidelity rubric, booster sessions, and ready-to-use templates.
Examining Associations Between Street Vegetation And Child Firearm Violence At Microgeographic Locations In 3 Us Cities: A Case-Control Study, Zihan Lin, Gregory A. Wellenius, Jonathan Jay
Examining Associations Between Street Vegetation And Child Firearm Violence At Microgeographic Locations In 3 Us Cities: A Case-Control Study, Zihan Lin, Gregory A. Wellenius, Jonathan Jay
Biological, Geological, and Environmental Faculty Publications
Background: Firearm violence is a leading cause of death among U.S. children under age 18. Urban vegetation, a vital component of the living environment, has been found to influence firearm violence, yet the relationship between different types of street vegetation and firearm violence with children as the victim at the microgeographic scale remains unclear.
Methods: We analyzed 2316 child firearm assault incidents from Los Angeles, New York City, and Philadelphia from 2015 to 2021. Using a spatial case-control approach, we matched assault locations with control locations within 1-km. For each location, we applied deep learning algorithms to Google Street View …
Global Erk/Mapk Activation Determines Oncogenic Fitness In Kras-Mutant Pancreatic Ductal Adenocarcinoma, Rachel A. Burge
Global Erk/Mapk Activation Determines Oncogenic Fitness In Kras-Mutant Pancreatic Ductal Adenocarcinoma, Rachel A. Burge
MUSC Theses and Dissertations
In pancreatic ductal adenocarcinoma (PDAC), ~95% of cases harbor an activating KRAS mutation. The most common KRAS mutations in PDAC are KRASG12D (42%), KRASG12V (31%), and KRASG12R (15%). Patients harboring KRASG12R mutations have increased overall survival compared to those with KRASG12D/V-mutations. While KRASG12D/Vare common in all KRAS-mutant cancers, KRASG12Ris only common in PDAC.
KRASG12R is unable to activate the lipid kinase PIK3CA, a KRAS effector that is important for tumorigenesis in murine models. To investigate the tumorigenic potential of KRASG12R and the mechanisms that enable this mutation …
Preventing Injuries In Cdl Drivers: An Occupational Therapy Approach, Jerika Eumecha Arnsworth, Cassandra Nelson, Lee Ann Hoffman
Preventing Injuries In Cdl Drivers: An Occupational Therapy Approach, Jerika Eumecha Arnsworth, Cassandra Nelson, Lee Ann Hoffman
Summer 2025 OTD Capstone Symposium
Commercial drivers are at heightened risk for musculoskeletal disorders (MSDs) due to prolonged sitting, inadequate ergonomic environments, and limited access to health education. This doctoral capstone project aimed to address these challenges through the development, implementation, and evaluation of a five-week educational program focused on improving ergonomic awareness and occupational health among CDL drivers. Grounded in the Person-Environment-Occupation (PEO) model, the program was implemented in collaboration with a small commercial logging company in Texas and featured weekly modules on hydration, preparatory movements, assistive technology, seating posture, and mental health.
A needs assessment revealed limited ergonomic knowledge among participants and a …
First Report Of Fibropapillomatosis And Critical Habitat Use In Green Sea Turtles In Curaçao, M. Tripepi, I. J. R. Van Veghel, A. D. Vreugdenhil, E. Brunelli
First Report Of Fibropapillomatosis And Critical Habitat Use In Green Sea Turtles In Curaçao, M. Tripepi, I. J. R. Van Veghel, A. D. Vreugdenhil, E. Brunelli
College of Life Sciences Faculty Papers
Fibropapillomatosis, a disease affecting green sea turtles (Chelonia mydas), has been documented in many regions of the world, including the Caribbean, but has not been scientifically reported in Curaçao until now. The present study utilized VHF telemetry in Caracas Bay, Curaçao, to track green sea turtles, both healthy and affected by fibropapillomatosis, with the objective of ascertaining their foraging locations. VHF telemetry proved to be a pivotal method for assessing habitat use in areas characterized by limited visibility and high boat traffic, conditions that present significant challenges for divers and snorkellers attempting to access the area. The results …
Developing Site-Specific Water Response Functions Using Historical Soil Moisture Data, Gifty Lad Ayela
Developing Site-Specific Water Response Functions Using Historical Soil Moisture Data, Gifty Lad Ayela
Theses and Dissertations
Variable rate irrigation (VRI) systems offer a promising solution by optimizing water application based on site-specific needs in different areas within a crop field. While accurate crop water production functions (CWPFs) are essential for VRI systems, developing CWPFs has been hindered by challenges in data collection and the complexities of modeling water’s impact on yields. This study attempts to develop site-specific CWPFs using farmers’ historical soil moisture data, collected using soil water tension (SWT) as a proxy, and yield maps. The spatial variability of the crop-water response functions was modeled using Geographically Weighted Regression (GWR) and the results from this …
Modeling Diameter Distribution Of Loblolly Pine Plantations In Response To Mid-Rotation Thinning Treatments And Assing The Economic Returns In Western Gulf Coastal Plain, Pragya Rijal, Yuhui Weng, Anusha Shrestha, Jason Grogan
Modeling Diameter Distribution Of Loblolly Pine Plantations In Response To Mid-Rotation Thinning Treatments And Assing The Economic Returns In Western Gulf Coastal Plain, Pragya Rijal, Yuhui Weng, Anusha Shrestha, Jason Grogan
Electronic Theses and Dissertations
The influence of thinning regimes incorporating row thinning on diameter distribution and timber product allocation is of considerable importance in the management of loblolly pine (Pinus taeda) plantations within the Western Gulf Coastal Plain. This study utilized data from a thinning study plots established by the East Texas Pine Plantation Research Project across East Texas and Western Louisiana. A two-parameter Weibull distribution was used to model diameter distributions under varying thinning intensities, with parameter estimation conducted using both parameter prediction (PPM) and percentile-based (PRM) methods. The PRM approach demonstrated excellent model performance, with coefficients of determination (R²) ranging …
Enumerating Escherichia Coli (E. Coli) Concentrations And Evaluating Optical Brighteners As A Potential Indicator Of Human Wastewater Contamination In La Nana Bayou, Banita Creek, And Their Tributaries, Nacogdoches, Texas, Swastika Acharya, Matthew Mcbroom, Yuhui Weng, Yanli Zhang
Enumerating Escherichia Coli (E. Coli) Concentrations And Evaluating Optical Brighteners As A Potential Indicator Of Human Wastewater Contamination In La Nana Bayou, Banita Creek, And Their Tributaries, Nacogdoches, Texas, Swastika Acharya, Matthew Mcbroom, Yuhui Weng, Yanli Zhang
Electronic Theses and Dissertations
La Nana Bayou was added to the Texas 303(d) list in 2000 after it failed to meet water quality standards set by the Texas Commission on Environmental Quality (TCEQ) for primary contact recreation due to elevated Escherichia coli (E. coli) levels. E. coli is a bacterial species commonly found in the intestines of humans and warm-blooded animals. It serves as an indicator of fecal contamination in freshwater, though its presence alone cannot identify the contamination source. Optical brighteners (OBs), chemicals found in laundry detergents, cleaning agents, toilet papers, and clothing, are unique to human wastewater. This study aimed …
Transcription Fidelity In The Face Of Oxidative Damage, Eastilan Gyiwah Appiah
Transcription Fidelity In The Face Of Oxidative Damage, Eastilan Gyiwah Appiah
Theses and Dissertations
It is very important that the process of transcription is correctly carried out in the cell for the faithful expression of the genetic code. However, should mistakes happen, they can result in transcription errors which interfere with the protein-making machinery of the cell. This will result in accumulation of proteins and dysfunctional proteins that have the potential of causing diseases like Alzheimer’s. Oxidative damage caused by hydrogen peroxide is known to cause transcription errors in organisms like yeast. It is therefore important to investigate the extent to which hydrogen peroxide can damage cells.
Influence Of Diverse Forage Environments On Honey Bee Colony Health, Angus Catchot Iii
Influence Of Diverse Forage Environments On Honey Bee Colony Health, Angus Catchot Iii
Theses and Dissertations
Honey bees are important pollinators that face a multitude of stressors in their environment such as pathogens, parasite pressure, forage availability and pesticide exposure. This study examined how the makeup of different environments and the stressors related to those environments are affecting honey bee health in Mississippi. A field experiment was conducted during the first year of the study across four distinct landscapes ranging from intensively cultivated cropland to predominantly natural forage habitats to assess the impact of landscape availability on varying honey bee colony health parameters. Locations that had cultivated crops within foraging range produced more honey and brood …
Effects Of Psychological Arousal And Relaxation On Muscle Performance, Activation, And Heart Rate Variability During Maximal Muscle Strength And Precision Tasks, Allison Ann Brown
Effects Of Psychological Arousal And Relaxation On Muscle Performance, Activation, And Heart Rate Variability During Maximal Muscle Strength And Precision Tasks, Allison Ann Brown
Theses and Dissertations
Psychological arousal plays a vital role in athletic performance, with the optimal point of arousal and performance level varying by task complexity. A common manipulator of arousal is music, which can produce multiple physiological effects. This study investigated whether unfamiliar arousing or relaxing music influences heart rate variability, muscle activation, maximal muscle strength, and muscle precision. Theoretically, if participants are found to have differing muscle performance responses as a result of differing music selections, this would further support the notion that the optimal point of arousal and performance is dependent upon the complexity of the task at hand. Thus, coaches …
Strategic Use Of Exogenous Feed Enzymes And Sodium Bisulfate To Optimize Broiler Production, Spencer Thomas Karn
Strategic Use Of Exogenous Feed Enzymes And Sodium Bisulfate To Optimize Broiler Production, Spencer Thomas Karn
Theses and Dissertations
Poultry producers must continually evaluate nutritional strategies to enhance broiler performance and sustainability. Chapter II assessed sodium bisulfate (SB) applied to litter, feed, and water across a 42-day grow-out. Applying SB to litter reduced pH, while 0.3% and 0.4% dietary SB improved feed conversion ratio (FCR). Water acidification with SB during the final week did not impair performance, supporting its use as a preharvest intervention. Chapter III evaluated phytase at 500, 1500, and 2000 FTU/kg, with or without protease, in reduced amino acid diets over 56 days. Birds fed a nutrient-adequate diet with 1500 FTU/kg phytase outperformed all reduced-amino acid …
From Gametes To Genes: Genetic Quality Assessment Of Anuran Cryopreserved Spermatozoa And Derived Embryos, Trinity Isabella Kassuhn
From Gametes To Genes: Genetic Quality Assessment Of Anuran Cryopreserved Spermatozoa And Derived Embryos, Trinity Isabella Kassuhn
Theses and Dissertations
Sperm cryopreservation is an important tool within the suite of assisted reproductive technologies (ART) as it enables long-term storage of genetically valuable gametes. However, knowledge of the diagnostic criteria for assessing sperm quality and the genetic consequences of using cryopreserved sperm in amphibians is limited. This gap has raised concerns in captive breeding and reintroduction programs regarding the potential impact that cryopreserved sperm and the derived embryos may have on a population. The thesis aims to investigate how sperm cryopreservation affects the genetic material in both sperm and resulting embryos, with implications for in situ and ex situ amphibian populations. …
Understanding Pollinator-Forb Interactions And Evaluating Trapping Methods For Pollinator Monitoring In Lawns Of The Southeastern United States, Sara Rose Kirby
Understanding Pollinator-Forb Interactions And Evaluating Trapping Methods For Pollinator Monitoring In Lawns Of The Southeastern United States, Sara Rose Kirby
Theses and Dissertations
Urban turfgrass landscapes are widespread across the southeastern United States but offer limited ecological value under conventional management. This thesis evaluates the pollinator support potential of ten forb species commonly found in low-maintenance lawns and assesses the effectiveness of two insect sampling methods, sweep netting and pan trapping. Over two years of field surveys, native forbs such as Symphyotrichum divaricatum and Claytonia virginica supported significantly greater insect abundance and diversity than introduced species. Network and modularity analyses revealed that native plants facilitated more specialized pollinator interactions, including those involving oligolectic bee species. In a complementary study, pan traps effectively sampled …
Sweetpotato Insect Pests: Virus Vector Management And Rearing, Rachel Emily Morrison
Sweetpotato Insect Pests: Virus Vector Management And Rearing, Rachel Emily Morrison
Theses and Dissertations
Sweetpotatoes (Ipomoea batatas) are vegetatively propagated through slips, making them prone to viral buildup. Aphids are insect pests known for transmitting viruses to crops, which reduces yield. This study examined different options for aphid management to reduce the spread of potyviruses: crop borders, crop oils, and insecticides. However, the results of this research showed that treatments were not successful at reducing the spread of the four potyviruses tested. An additional objective was to establish a colony of banded cucumber beetles (Diabrotica balteata) in the laboratory. These beetles are a leaf-feeding and root-feeding pest of sweet potatoes. Two colonies of banded …
Evaluation Of Soil Steaming, Cover Crops, And Allelopathy: An Integrated And Sustainable Weed Management Strategy In Sweetpotatoes, Alaina Marie Richardson
Evaluation Of Soil Steaming, Cover Crops, And Allelopathy: An Integrated And Sustainable Weed Management Strategy In Sweetpotatoes, Alaina Marie Richardson
Theses and Dissertations
Yellow nutsedge (Cyperus esculentus L.) is a persistent weed in sweetpotato and vegetable cropping systems caused by its aggressive growth habit and limited control options. The present study assessed two alternative, chemical-free methods: steaming the soil and the use of allelopathic cover crops. Greenhouse and field experiments showed that steaming suppressed the germination of yellow nutsedge effectively and that treatments for 45 min provided the highest control of all the soil depths tested (100%). A leachate experiment examined the allelopathy of five cover crops against yellow nutsedge and showed that buckwheat and cereal rye had the largest reductions in shoot …
Feed-Based Strategies To Improve Poultry Production Efficiency, Anna Kathryn Riggs
Feed-Based Strategies To Improve Poultry Production Efficiency, Anna Kathryn Riggs
Theses and Dissertations
The poultry industry continues to make significant strides in efficiency and innovation, particularly through advancements in nutrition. This thesis explores two key areas within broiler nutrition that are essential to supporting sustainable, cost-effective poultry production. First, the potential of a next-generation exogenous carbohydrase enzyme blend containing beta-mannanase and endo-glucanase is investigated when supplemented into reduced-energy, all-vegetable diets based on corn, soybean meal, and corn distillers dried grains with solubles in male broilers over a 42-day grow-out period, including processing (Chapter II). Second, the thesis examines the use of modeling strategies such as cubic, quadratic, kernel and smoothing spline to predict …