Digital Commons Network^™

A Social Media–Delivered Melanoma Prevention Program For Young Women Engaged In Frequent Uv Tanning: Protocol For A Randomized Controlled Trial, Jerod L. Stapleton, Sharon L. Manne, Sherry L. Pagoto, Allison Leip, Kathryn Greene, Joel Hillhouse, Allison S. Merritt, Brent J. Shelton

UK CARES Faculty Publications

Background: Rates of melanoma have increased dramatically in the United States over the past 25 years, and it has become among the most prevalent cancers for young adult women. Intentional skin tanning leads to a pattern of intense and intermittent UV radiation exposure that is associated with increased risk of melanoma. Frequent tanning is most common among young women and is linked to a variety of sociocultural pressures that negatively impact body image and drive appearance control behaviors. Unfortunately, there are no established interventions designed for frequent tanners. This intervention addresses this gap with unique content informed by body image …

Firefighter Health: A Narrative Review Of Occupational Threats And Countermeasures, Drew E. Gonzalez, Sarah N. Lanham, Steven E. Martin, Richard E. Cleveland, Thad E. Wilson, Emily L. Langford, Mark G. Abel

UK CARES Faculty Publications

Structural firefighters are responsible for protecting properties and saving lives during emergency operations. Despite efforts to prepare firefighters for these hazardous occupational demands, the unfortunate reality is that the incidence of health morbidities is increasing within the fire service. Specifically, cardiovascular disease, cancer, and mental health disorders are among the most documented morbidities in firefighters. Pubmed and Google Scholar search engines were used to identify peer-reviewed English language manuscripts that evaluated firefighters’ occupational health threats, allostatic factors associated with their occurrence, and evidence-based strategies to mitigate their impact. This narrative review provides fire departments, practitioners, and researchers with evidence-based practices …

Undiagnosed Cancer Cases In The Us During The First 10 Months Of The Covid-19 Pandemic, Todd Burus, Feitong Lei, Bin Huang, W. Jay Christian, Pamela C. Hull, Amanda R. Ellis, Svetla Slavova, Thomas Tucker, Krystle A. Lang Kuhs

UK CARES Faculty Publications

IMPORTANCE The COVID-19 pandemic disrupted the normal course of cancer screening and detection in the US. A nationwide analysis of the extent of this disruption using cancer registry data has not been conducted.

OBJECTIVE To assess the observed and expected cancer rate trends for March through December 2020 using data from all 50 US states and the District of Columbia.

DESIGN, SETTINGS, AND PARTICIPANTS This was a population-based cross-sectional analysis of cancer incidence trends using data on cases of invasive cancer diagnosis reported to the US Cancer Statistics from January 1, 2018, through December 31, 2020. Data analyses were performed …

Higher Glycemic Index And Glycemic Load Diet Is Associated With Slower Disease Progression In Amyotrophic Lateral Sclerosis, Ikjae Lee, Hiroshi Mitsumoto, Seonjoo Lee, Edward J. Kasarskis, Michael Rosenbaum, Pam Factor-Litvak, Jeri W. Nieves

Neurology Faculty Publications

Objective: High-caloric diets may slow the progression of amyotrophic lateral sclerosis; however, key macronutrients have not been identified. We examined whether dietary macronutrients are associated with the rate of progression and length of survival among the prospective cohort study participants.

Methods: Participants with a confirmed diagnosis of sporadic amyotrophic lateral sclerosis enrolled in the Multicenter Cohort Study of Oxidative Stress were included (n = 304). We evaluated baseline macronutrient intake assessed by food frequency questionnaire in relation to change in revised amyotrophic lateral sclerosis functional rating scale total- score, and tracheostomy-free survival using linear regression and Cox proportional hazard models. …

Attention-Deficit/Hyperactivity Disorder And The Menstrual Cycle: Theory And Evidence., Ashley G. Eng, Urveesha Nirjar, Anjeli Elkins, Yancey J. Sizemore, Krystina N. Monticello, Madeline K. Petersen, Sarah A. Miller, Jordan Barone, Tory A. Eisenlohr-Moul, Michelle M. Martel

Psychology Faculty Publications

Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder that exhibits striking sex differences in symptoms, prevalence, and associated problems across development. Etiological factors and mechanisms underlying these sex differences remain one of the most understudied aspects of this disorder. The current paper seeks to provide a novel theoretical framework for understanding this phenomenon by reviewing evidence that females with ADHD may experience a "double whammy" of organizational and activational pubertal hormonal effects. We propose a novel theory of activational effects of cyclical circulating ovarian hormones on ADHD with increasing risk at times of rapid declines in estrogen. These declines may decrease …

Alzheimer’S Disease And Inflammatory Biomarkers Positively Correlate In Plasma In The Uk-Adrc Cohort, Kate E. Foley, Zachary Winder, Tiffany L. Sudduth, Barbara J. Martin, Peter T. Nelson, Gregory Jicha, Jordan P. Harp, Erica M. Weekman, Donna M. Wilcock

Neurology Faculty Publications

INTRODUCTION: Protein-based plasma assays provide hope for improving accessibility and specificity of molecular diagnostics to diagnose dementia. METHODS: Plasma was obtained from participants (N = 837) in our community-based University of Kentucky Alzheimer’s Disease Research Center cohort. We evaluated six Alzheimer’s disease (AD)- and neurodegeneration-related (Aβ40, Aβ42, Aβ42/40, p- tau181, total tau, and NfLight) and five inflammatory biomarkers (TNF𝛼, IL6, IL8, IL10, and GFAP) using the SIMOA-based protein assay platform. Statistics were performed to assess correlations. RESULTS: Our large cohort reflects previous plasma biomarker findings. Relationships between biomarkers to understand AD–inflammatory biomarker correlations showed significant associations between AD and inflammatory …

Current Practices, Perceived Barriers, And Promising Implementation Strategies For Improving Quality Of Smoking Cessation Support In Accredited Cancer Programs Of The American College Of Surgeons., Jamie S. Ostroff, Eileen M. Reilly, Jessica L. Burris, Graham W. Warren, Rachel C. Shelton, Timothy W. Mullett, Just Ask Quality Improvement Task Force

Psychology Faculty Publications

PURPOSE: Persistent smoking is associated with poor outcomes in cancer care. It is strongly recommended that oncology care providers provide cessation support; however, there is limited information about smoking cessation assessment and treatment patterns in routine oncology practice.

METHODS: Leaders of the American College of Surgeons Commission on Cancer (CoC) and National Accreditation Program for Breast Centers (National Accredited Program for Breast Cancer) elected to participate in a national quality improvement initiative (Just ASK) focused on smoking assessment/treatment in cancer care. Online baseline survey responses were received from 762 accredited programs.

RESULTS: Most programs reported regularly asking about smoking (89.9%), …

Pathologic Correlates Of Aging-Related Tau Astrogliopathy: Artag Is Associated With Late-Nc And Cerebrovascular Pathologies, But Not With Adnc, Yuriko Katsumata, Xian Wu, Khine Zin Aung, Kathryn Gauthreaux, Charles Mock, Shelley L. Forrest, Gabor G. Kovacs, Peter T. Nelson

Neurology Faculty Publications

Age-related tau astrogliopathy (ARTAG) is detectable in the brains of over one-third of autopsied persons beyond age 80, but the pathoetiology of ARTAG is poorly understood. Insights can be gained by analyzing risk factors and comorbid pathologies. Here we addressed the question of which prevalent co-pathologies are observed with increased frequency in brains with ARTAG. The study sample was the National Alzheimer’s Coordinating Center (NACC) data set, derived from multiple Alzheimer’s disease research centers (ADRCs) in the United States. Data from persons with unusual conditions (e.g. frontotemporal dementia) were excluded leaving 504 individual autopsied research participants, clustering from 20 different …

Azithromycin Reduces Hemoglobin-Induced Innate Neuroimmune Activation, Chirayu D. Pandya, Hemendra J. Vekaria, Miriam Zamorano, Amanda L. Trout, Rodney M. Ritzel, Gary Guzman, Christopher Bolden, Patrick G. Sullivan

Neurology Faculty Publications

Neonatal intraventricular hemorrhage (IVH) releases blood products into the lateral ventricles and brain parenchyma. There are currently no medical treatments for IVH and surgery is used to treat a delayed effect of IVH, post-hemorrhagic hydrocephalus. However, surgery is not a cure for intrinsic brain injury from IVH, and is performed in a subacute time frame. Like many neurological diseases and injuries, innate immune activation is implicated in the pathogenesis of IVH. Innate immune activation is a pharmaceutically targetable mechanism to reduce brain injury and post-hemorrhagic hydrocephalus after IVH. Here, we tested the macrolide antibiotic azithromycin, which has immunomodulatory properties, to …

Amperometric Bio-Sensing Of Lactate And Oxygen Concurrently With Local Field Potentials During Status Epilepticus, Eliana Fernandes, Ana Ledo, Greg A. Gerhardt, Rui M. Barbosa

Neurology Faculty Publications

Epilepsy is a prevalent neurological disorder with a complex pathogenesis and unpredictable nature, presenting limited treatment options in >30 % of affected individuals. Neurometabolic abnormalities have been observed in epilepsy patients, suggesting a disruption in the coupling between neural activity and energy metabolism in the brain. In this study, we employed amperometric biosensors based on a modified carbon fiber microelectrode platform to directly and continuously measure lactate and oxygen dynamics in the brain extracellular space. These biosensors demonstrated high sensitivity, selectivity, and rapid response time, enabling in vivo measurements with high temporal and spatial resolution. In vivo recordings in the …

Hiv-1 Mrna Knockdown With Crispr/Cas9 Enhances Neurocognitive Function, Kristen A. Mclaurin, Hailong Li, Kamel Khalili, Charles F. Mactutus, Rosemarie M. Booze

Neurology Faculty Publications

Mixed glia are infiltrated with HIV-1 virus early in the course of infection leading to the development of a persistent viral reservoir in the central nervous system. Modification of the HIV-1 genome using gene editing techniques, including CRISPR/Cas9, has shown great promise towards eliminating HIV-1 viral reservoirs; whether these techniques are capable of removing HIV-1 viral proteins from mixed glia, however, has not been systematically evaluated. Herein, the efficacy of adeno-associated virus 9 (AAV9)-CRISPR/Cas9 gene editing for eliminating HIV-1 messenger RNA (mRNA) from cortical mixed glia was evaluated in vitro and in vivo. In vitro, a within-subjects experimental design was …

Exploring The Role Of Sex In The Association Of Late Chronotype On Cardiorespiratory Fitness, J. Matthew Thomas, Philip A. Kern, Heather M. Bush, Sarah J. Robbins, W. Scott Black, Julie S. Pendergast, Jody L. Clasey

Biostatistics Faculty Publications

Circadian rhythms differ between young adult males and females. For example, males tend to be later chronotypes, preferring later timing of sleep and activity, than females. Likewise, there are sex differences in body composition and cardiorespiratory fitness. Few studies have investigated the association between circadian rhythms, cardiorespiratory fitness, and body composition. We sought to determine whether chronotype and circadian phase were associated with cardiorespiratory fitness, body composition, and anthropometric measures in sedentary males and females. Fifty-nine adults participated in the study. Circadian phase and chronotype were measured using dim light melatonin onset (DLMO) and the Morningness–Eveningness Questionnaire (MEQ) score. We …

Mapping Urban Form Into Local Climate Zones For The Continental Us From 1986–2020, Meng Qi, Chunxue Xu, Wenwen Zhang, Matthias Demuzere, Perry Hystad, Tianjun Lu, Peter James, Benjamin Bechtel, Steve Hankey

Earth and Environmental Sciences Faculty Publications

Urbanization has altered land surface properties driving changes in micro-climates. Urban form influences people’s activities, environmental exposures, and health. Developing detailed and unified longitudinal measures of urban form is essential to quantify these relationships. Local Climate Zones [LCZ] are a culturally-neutral urban form classification scheme. To date, longitudinal LCZ maps at large scales (i.e., national, continental, or global) are not available. We developed an approach to map LCZs for the continental US from 1986 to 2020 at 100 m spatial resolution. We developed lightweight contextual random forest models using a hybrid model development pipeline that leveraged crowdsourced and expert labeling …

Cold-Inducible Rna Binding Protein Impedes Breast Tumor Growth In The Pymt Murine Model For Breast Cancer, Daniel A. Lujan, Joey L. Ochoa, Ellen J. Beswick, Tamara A. Howard, Helen J. Hathaway, Nora I. Perrone-Bizzozero, Rebecca S. Hartley

Markey Cancer Center Faculty Publications

RNA binding proteins (RBPs) post-transcriptionally regulate gene expression by associating with regulatory sequences in the untranslated regions of mRNAs. Cold-inducible RBP (CIRP) is a stress-induced RBP that was recently shown to modulate inflammation in response to cellular stress, where it increases or decreases pro-tumorigenic (proinflammatory) cytokines in different contexts. CIRP expression is altered in several cancers, including breast cancer, but the effects of CIRP on inflammation in breast cancer is not known. Here, we investigate if CIRP alters growth and the inflammatory profile of breast tumors. Transgenic mice overexpressing CIRP in the mammary epithelium were crossed with the PyMT mouse …

Association Between Circulating Inflammatory Markers And Adult Cancer Risk: A Mendelian Randomization Analysis., James Yarmolinsky, Jamie W. Robinson, Daniela Mariosa, Ville Karhunen, Jian Huang, Niki Dimou, Neil Murphy, Kimberley Burrows, Emmanouil Bouras, Karl Smith-Byrne, Sarah J. Lewis, Tessel E. Galesloot, Lambertus A. Kiemeney, Sita Vermeulen, Paul Martin, Demetrius Albanes, Lifang Hou, Polly A. Newcomb, Emily White, Alicja Wolk, Anna H. Wu, Loïc Le Marchand, Amanda I. Phipps, Daniel D. Buchanan, The International Lung Cancer Consortium, The Practical Consortium, Sizheng Steven Zhao, Dipender Gill, Stephen J. Chanock, Mark P. Purdue, George Davey Smith, Paul Brennan, Karl-Heinz Herzig, Marjo-Riitta Järvelin, Chris I. Amos, Rayjean J. Hung, Abbas Dehghan, Mattias Johansson, Marc J. Gunter, Kostas K. Tsilidis, Richard M. Martin

Markey Cancer Center Faculty Publications

BACKGROUND: Tumour-promoting inflammation is a "hallmark" of cancer and conventional epidemiological studies have reported links between various inflammatory markers and cancer risk. The causal nature of these relationships and, thus, the suitability of these markers as intervention targets for cancer prevention is unclear.

METHODS: We meta-analysed 6 genome-wide association studies of circulating inflammatory markers comprising 59,969 participants of European ancestry. We then used combined cis-Mendelian randomization and colocalisation analysis to evaluate the causal role of 66 circulating inflammatory markers in risk of 30 adult cancers in 338,294 cancer cases and up to 1,238,345 controls. Genetic instruments for inflammatory markers were …

Concentrations Of Lead And Arsenic In Mother's Milk And Children's Blood In Peruvian Breastfeeding Dyads., Ana Maria Linares, Amanda Thaxton-Wiggins, Jason M Unrine

Nursing Faculty Publications

BACKGROUND: Toxic trace elements could enter human milk through mothers' food consumption, drinking water, air, or incidental soil ingestion, and are of concern to the nursing infant.

RESEARCH AIM: To determine the concentration of toxic trace elements (lead and arsenic) in Peruvian mothers' milk and their association with blood concentrations in their own infants 3-20 months old.

METHOD: This exploratory, cross-sectional study, carried out in Peru, included breastfeeding mother/child dyads (N = 40). Following standardized protocols, biospecimens of human milk and child's blood were collected.

RESULTS: Lead and arsenic concentrations in milk were above the method detection limits in …

A Dyadic Analysis Of Financial Toxicity And Health-Related Quality Of Life Among Bone Marrow Transplant Patients And Their Caregivers., Jean S Edward, Mary Kay Rayens, Laurie E. Mclouth, Lori P Eisele, Joan Scales, Lovoria B. Williams, Gerhard C. Hildebrandt

Nursing Faculty Publications

OBJECTIVE: Relatively few dyad-based studies have evaluated the shared psychosocial and financial toxicity (FT) experiences of hematologic patients and their caregivers, especially those undergoing bone marrow transplantations (BMTs). This study evaluated the association of FT with health-related quality of life (QOL) among BMT patient-caregiver dyads.

METHODS: Survey and electronic health record data were collected between April 2021 and January 2022 from BMT patients and their caregivers pre- (T1) and post-intervention (T2). Thirty-four patient-caregiver dyads completed surveys; all dyads included a patient experiencing elevated T1 FT. The effect of the total FT score (i.e., the combination of psychological response, coping behaviors, …

Feasibility And Clinical Utility Of Reporting Hereditary Cancer Predisposition Pathogenic Variants Identified In Research Germline Sequencing: A Prospective Interventional Study, Megan L. Hutchcraft, Shulin Zhang, Nan Lin, Justine C. Pickarski, Elizabeth Belcher, Sainan Wei, Therese J. Bocklage, Rachel W. Miller, John L. Villano, Michael J. Cavnar, Joseph Kim, Susanne M. Arnold, Frederick R. Ueland, Jill M. Kolesar

Markey Cancer Center Faculty Publications

PURPOSE

Patients with cancer frequently undergo research-grade germline sequencing but clinically actionable results are not routinely disclosed. The objective of this study is to evaluate the feasibility of reporting clinically relevant sec- ondary findings (SF) identified in germline research sequencing using the institutional molecular tumor board (MTB) and the treating oncology physician.

METHODS

This prospective, interventional cohort study enrolled Total Cancer Care par- ticipants with any cancer diagnosis at a single institution. Patients underwent research-grade germline whole-exome sequencing, with bioinformatic anal- ysis in a Clinical Laboratory Improvement Amendments–certified laboratory to verify pathogenic/likely pathogenic germline variants (PGVs) in any American College …

Designing Dual-Purpose Management Strategies For Sheep Production And Pollinators In Dryland Pastures, Mia Caudillo, Andony Melathopoulos, Mary Smallman, Sarah A. Kinkaid, David E. Prado-Tarango, Serkan Ates

IGC Proceedings (1977-2023)

Development of novel grazing management practicesfor both livestock production and pollinator health is becoming increasingly crucial in pasture-based farming systems. The effect of pasture type and spring closing dates on lamb liveweight gain, pasture production, botanical composition, bloom density and bee visitation was monitored over 2 years at the Oregon State University in Corvallis. Total annual dry matter yield (DMY) of diverse pastures in 2020/2021 was 8.8 t DM ha^-1 and this was greater (P-1) and legume pastures (6.6 t DM ha^-1). In successive years, lambs grew faster in legume pastures (287, 215 g per head d …

Effect Of Soil Source And Variety On The Heavy Metal Contents Of Guinea Grass, C. C. Anotaenwere, P. O. Bankole, P. A. Dele, Alaba O. Jolaosho

IGC Proceedings (1977-2023)

The aim of this study was to evaluate the heavy metal content in soils and grasses planted on selected contaminated soils. The study was a 3 x 2 factorial experiment in a completely randomized design comprising of two factors which are: 3 soil sources (i.e., industrial site, dump site and Fadama (a lowland around a river/stream) which was used as the control) and 2 varieties of Megathyrsus maximus (var. Local and Ntchisi) replicated four times. Soils were collected from the three sites and planting was done in a greenhouse. Soil samples were collected before and after planting. Samples of the …

Impact Of Type Of K Fertilizer On Dcad Of Fen Grassland In Northeast Germany, A. Behrendt, J. Pickert, F. Eulenstein, B. Kroschewski

IGC Proceedings (1977-2023)

A lower DCAD is required in the diet fed during the prepartum period, but increasing the DCAD of diets fed during lactation increased milk yield and dry matter intake (Overton 2020). We conducted 3 cutting date/type of fertilizer trials, harvested with 5, 4 and 3 cuts per year over 3 years. Compared to the chloride based K fertilizer, the application of a sulphate based K fertilizer did not change dry matter yield and fodder quality (NEL-, XP-content) but led to significant higher DCAD in the grass in cut 1 - 3 of all trials over 3 years. The increase of …

Breeding Small Grains As A Forage, Silage And Cover Crop For The Southern Coastal Plain (Usa) In A Changing Climatic Environment, A. Blount, Marcelo O. Wallau, S. A. Harrison, Cheryl L. Mackowiak, A. Babar, José C. B. Dubeux Jr.

IGC Proceedings (1977-2023)

Forage breeding of small grains in the southern Coastal Plains region of the U.S. mimic many other countries experiencing climate changes and breeding strategies should be similar for improving small grains grown for forage, silage or as cover crops. Significant focus on improvements in stress-adaptation has encouraged members of the SunGrains cooperative to cross, evaluate and develop experimental lines with inherent adaptation to climatic conditions including heat stress, drought tolerance, short-day and long-day forage production periods, and flooded conditions for events with storm-related, short-term durations. Many new cultivars, grown throughout the southeastern U.S. have resulted from breeding selection under abiotic …

The Future Of Clovers In Forage Systems And As Cover Crops, J. H. Bouton, John R. Caradus

IGC Proceedings (1977-2023)

Clovers (Trifolium spp.) are the most widely used genera of legumes in forage systems, although only a limited number of the hundreds of perennial and annual species are commercially available. The number of varieties available within each of the main commercial species can be high and demonstrates past breeding achievements. Success relates to any clover’s ability to persist in mixtures with other forage species, across a range of soil types, management systems, and climates, while providing animal nutrition and biologically fixed nitrogen benefits. Uses range from traditional pasture mixtures with grasses to inclusion in multi-species mixtures, and as cover …

Effectiveness And Cost Of Shrub Removal Methods In Degraded Woodlands Being Converted To Silvopasture, S. Cartoni-Casamitjana, M. J. Renz

IGC Proceedings (1977-2023)

Transforming degraded woodlands to silvopasture is of interest in the Midwestern USA as it increases profitability of farms and benefits animal health. Invasive shrubs within woodlands, however, are a major obstacle to silvopasture establishment. Research was undertaken to evaluate the effectiveness, cost and resulting herbaceous canopy light interception of common brush-control methods when used alone or integrated over a two-year timeframe. Five treatments were established in a randomized complete block design. In the first year, treatments were either forestry mowed (mow) or rotationally grazed by goats (goats) at a stocking density of 5700 to 6000 kg per hectare. In the …

Grass Vegetation Dynamics In Wetlands With Different Utilization, Dorai Pandian Kannan

IGC Proceedings (1977-2023)

The land-use patterns, combined with the biotic interactions, are likely to substantially affect the grass community of tropical wetlands. However, we need more information to understand the vegetation cover and, particularly, the diversity of grasses in the protected sites, where the naturally occurring interactions with extreme complexity. Hence a thorough understanding of these interactive effects on grass dynamics would help develop wildlife management guidelines to predict the grass-woody herbs and other associated vegetation. In light of this, a beta vegetation survey and diversity analysis in two varying wetland ecosystems of natural mountain streams and temporary ponds. Grass communities occurred along …

Weed Management Affects Pasture Productivity And Animal Performance, José C. B. Dubeux Jr., I. L. Brêtas, L. M. D. Queiroz, H. A. Koury

IGC Proceedings (1977-2023)

Weed can be defined as any plant growing in undesirable locations. Weeds are considered one of the main challenges in agricultural fields. Weeds affect pasture productivity mainly because of the competition for limited resources such as nutrients, water, and light with forage plants. Weeds encroach pastures spontaneously and spread quickly through the farm and neighboring areas, making their control difficult. In addition, weeds can affect forage nutritive value, grazing behaviour, voluntary forage intake, animal health, and consequently animal performance. The low efficiency of mechanical weeding and the global concern about indiscriminate use of herbicides impose challenges for producers in grazing …

Development Of Seed Production Of Important Grass And Legume Species In Poland In Relation To The European Market, Barbara Golińska, Piotr Goliński

IGC Proceedings (1977-2023)

An analysis was carried out on the status of seed production of most important grass and legume species in Poland in terms of the area of seed crops and their seed yield on the background of the European market. Particular attention in the analysis was paid to the dominant species in the reproductive area of varieties of forage and turfgrasses and small-seeded legumes in Poland and in Europe, i.e. Lolium perenne L., Lolium multiflorum Lam., Festuca rubra L. and Trifolium pratense L. For analysis the ESCAA and Polish Main Inspectorate of Plant Health and Seed Inspection data from 2004‒2021 were …

A Comparison Of Four Methods Of Botanical Analysis In Kentucky Cattle Pastures, Echo Elizabeth Gotsick, S. Ray Smith, Jimmy C. Henning, Christopher D. Teutsch

IGC Proceedings (1977-2023)

Throughout the many decades of grassland and forage research, practitioners have used many different methods to assess botanical composition. While a few of these methods have proven to be accurate and efficient, there has been limited direct comparison between methods. The objective of this study was to determine an accurate and efficient method to determine botanical composition for researchers, practitioners, and students. Six farms with two pastures each were monitored across the state of Kentucky. Sampling started fall 2020 and continued through fall 2022 with measurements taken three times a year using the following measurement techniques: step point, visual estimation, …

Short-Term Effect Of Forage Grasses On Carbon Sustainability, Fodder Security, And Soil Properties In Poor Soils Of Semi-Arid India, H. M. Halli, P. Govindasamy, M. Choudhary, R. Srinivasan, M. Prasad, Vinod K. Wasnik, Vijay Kumar Yadav, A. K. Singh, S. Kumar, D. Vijay

IGC Proceedings (1977-2023)

Grasses are essential sources of fodder for livestock and provide options for climate resilience due to their broad range of adoption. They are also valuable resources for soil quality enhancement. Therefore, a six-year field study using nine grasses (2013 to 2019) was initiated in a semi-arid region of central India. The study aimed to assess the short-term impact of these nine grasses on soil carbon stock, selected soil physiochemical and biological properties, and green fodder yield. Results (after six years) revealed that a greater carbon stock (7.0 and 7.2 Mg ha^–1), carbon sustainability index (71.6 and 89.3), and …

Improvement In The Nitrogen Use Efficiency And Uptake Of Perennial Ryegrass (Lolium Perenne) Caused By The Epichloë Fungal Endophyte Ar37, M. A. Harmer

IGC Proceedings (1977-2023)

The forage yield and pasture persistence benefits of Epichloë fungal endophyte strain AR37 (AR37) in high rainfall perennial ryegrass (Lolium perenne) pastures in Australia and New Zealand are recognised. However, the effect of beneficial endophytes on nitrogen (N) use efficiency, yield response to applied N and N uptake had not been determined.

To investigate this, a replicated trial was managed for three years under irrigation in southern Australia. Five N application rates (0, 20, 40, 80 and 160 kg N/ha) were applied every second harvest to a tetraploid perennial ryegrass variety with and without AR37. Ryegrass biomass was …