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Patterns And Sources Of Variation In Heterospecific Pollen Deposition In Flowers Of The Native Blue Cardinal Flower (Lobelia Siphilitica), Allie Drinnon 2023 East Tennessee State University

Patterns And Sources Of Variation In Heterospecific Pollen Deposition In Flowers Of The Native Blue Cardinal Flower (Lobelia Siphilitica), Allie Drinnon

Undergraduate Honors Theses

Plants species interactions via pollinators are a model system to understand the mechanisms that generate plant diversity in nature. However, most studies have focused on plant-plant interactions via pollinator attraction while ignoring the role of plant-plant interactions via pollen transfer. Heterospecific pollen transfer (henceforth HP) can be common and have negative fitness effects. Negative HP fitness effects may prompt the evolution of adaptive strategies to minimize them. However, the extent of spatial variation in HP load size within and among populations, a tenet for natural selection, remains unexplored. Such knowledge would hence constitute a first step in advancing our understanding ...


Management Of Garlic Mustard (Alliaria Petiolata), Sahara Mustard (Brassica Tournefortii), And Elongated Mustard (Brassica Elongata) In Utah, Natalie Layne Fronk 2022 Utah State University

Management Of Garlic Mustard (Alliaria Petiolata), Sahara Mustard (Brassica Tournefortii), And Elongated Mustard (Brassica Elongata) In Utah, Natalie Layne Fronk

All Graduate Theses and Dissertations

The invasive mustard species Sahara mustard (Brassica tournefortii), garlic mustard (Alliaria petiolata) and elongated mustard (Brassica elongata) negatively impact a variety of ecological systems across the state of Utah. The distribution of these species in Utah is relatively limited at the current time. If prompt action is taken, it may be possible to contain and manage these species before irreparable ecological and agricultural damage occurs. For this reason, all three mustards are listed by the State of Utah as weeds of high priority for management.

This project tested multiple strategies to determine effective species-specific methods for invasive mustard management. Field ...


Dairy Breed, Grass-Birdsfoot Trefoil Mixture, And Pasture Nutrition Effects On Intake, Feed Efficiency, And Grazing Adaptation, Michael Greenland 2022 Utah State University

Dairy Breed, Grass-Birdsfoot Trefoil Mixture, And Pasture Nutrition Effects On Intake, Feed Efficiency, And Grazing Adaptation, Michael Greenland

All Graduate Theses and Dissertations

Dairy cattle have lower dry matter intake (DMI) on pastures thus leading to less weight gain and milk production than feedlot cows. This study was conducted to determine whether different dairy breeds are better adapted to lower or higher quality pastures as measured in DMI and feed efficiency. The eight treatments consisted of Jersey, Holstein, Holstein-Jersey crossbreds, and 3-breed crossbreds (Montbéliarde-Swedish Red-Holstein) heifers on grass monocultures and grass-BFT mixtures. We observed greater DMI on grass-BFT mixtures. Among breeds, Holstein had the greatest DMI, then the two crossbreds, and Jersey had the least. Feed efficiency was most favorable for Jersey, less ...


Soil Genesis Across A Climo-Lithosequence Of Western Haleakalā, Maui, Ryan C. Hodges 2022 Utah State University

Soil Genesis Across A Climo-Lithosequence Of Western Haleakalā, Maui, Ryan C. Hodges

All Graduate Theses and Dissertations

The soils of western Haleakalā are incredibly diverse due to two primary reasons: 1) they receive varying levels of rainfall based on location relative to Haleakalā, and 2) volcanic vents upwind of the area indicate that volcanic ash has blanketed much of western Haleakalā in the past. Ash can weather to form short-range-order materials, which contribute to the classification of andic soil properties. Due to their structure, short-range-order materials impart soil behavior that creates benefits and challenges in land management. Therefore, an understanding of how these soils formed and differ, and where andic soils occur is crucial.

The objectives of ...


Helping Utah Landowners Reduce Pesticide Use Through A Statewide Ipm Program, Nick Volesky, Mair Murray 2022 Utah State University

Helping Utah Landowners Reduce Pesticide Use Through A Statewide Ipm Program, Nick Volesky, Mair Murray

Outcomes and Impact Quarterly

The Utah Integrated Pest Management (IPM) program provides outreach and education to Utahns to reduce pesticide use and ultimately protect human and environmental health. In 2022, the IPM program responded to stakeholders’ needs by partnering with county Extension offices to deliver eight (8) in-person workshops across the state. The workshops connected Extension specialists and county faculty with managers of home landscapes and farms. The objective of the workshops was to provide participants with IPM skills to identify, monitor, and manage pest problems in preparation for the upcoming growing season.


High Tunnel Construction Cost Calculation Workbook, Shannon Rauter, Melanie Stock, Brent Black, Dan Drost 2022 Utah State University

High Tunnel Construction Cost Calculation Workbook, Shannon Rauter, Melanie Stock, Brent Black, Dan Drost

All Current Publications

The cost of building a high tunnel fluctuates over time with supply prices. This Excel workbook accompanies the USU Extension fact sheet, "Constructing a Low-cost High Tunnel" by Black, Drost, Rowley, and Heflebower (2011) and allows users to input local supply costs. The workbook then calculates the cost to build a USU low-cost high tunnel with several design options according to high tunnel length and door structure. It also provides an example calculation based on April 2022 pricing for reference.


Perceptions And Management Of Ventenata By Producers In The Inland Pacific Northwest, Lisa Jones, John Wallace, Kathleen Painter, Pamela Pavek, Timothy S. Prather 2022 University of Idaho

Perceptions And Management Of Ventenata By Producers In The Inland Pacific Northwest, Lisa Jones, John Wallace, Kathleen Painter, Pamela Pavek, Timothy S. Prather

The Journal of Extension

Ventenata is an annual grass that has invaded agricultural and wildland settings in the Inland Pacific Northwest, causing economic and ecological losses. We know little about producers’ perceived risks and management of ventenata. We present results of surveys in 2011 and 2014 targeting producers across affected counties in Idaho and Washington. Awareness of ventenata and costs to producers increased across that time interval. Respondents attending ventenata Extension events adopted recommended management strategies more than those who did not attend. Our study documents the importance of continued integrated pest management research in concert with stakeholder engagement and education.


Interdisciplinary Team Addresses Cotton Leafroll Dwarf Virus In Alabama, Kassie N. Conner, Edward Sikora, Jenny Koebernick, Marcio Zaccaron 2022 Auburn University

Interdisciplinary Team Addresses Cotton Leafroll Dwarf Virus In Alabama, Kassie N. Conner, Edward Sikora, Jenny Koebernick, Marcio Zaccaron

The Journal of Extension

A multi-state and interdisciplinary team was formed to address the Extension and research needs of CLRDV, an emerging cotton disease with high potential impact for U.S. cotton production. In 2017, CLRDV was identified in AL and Auburn University immediately formed an interdisciplinary working group composed of plant breeders, plant pathologists, entomologists, and agronomists. Since then, scientists from ten other states have joined the CLRDV group. Thus, allowing research to be coordinated efficiently and best deploy limited resources to attend the stakeholder’s needs. The CLRDV group produces and shares new and relevant information with the scientific community and cotton ...


Michigan Conifer Growers’ Perspectives On Disease Management, Emily S. Huff, Monique L. Sakalidis 2022 Michigan State University

Michigan Conifer Growers’ Perspectives On Disease Management, Emily S. Huff, Monique L. Sakalidis

The Journal of Extension

A survey of commercial nursery and Christmas tree growers was implemented online and by mail in 2018 to understand disease issues and information preferences. Overall, the majority of the respondents reported that they prefer online sources of information and many are using Extension bulletins and sources. Cultural, chemical, and weed control methods were considered extremely effective by participants and very few used biological control methods to control disease. Participants identified spruce decline, boxwood blight, and hemlock woolly adelgid as emerging disease threats, so future information to growers should focus on identification and management of these threats.

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Forage News [2022-06], Department of Plant and Soil Sciences, University of Kentucky 2022 University of Kentucky

Forage News [2022-06], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

No abstract provided.


Nutrient Management For Recirculating Hydroponics, Noah J. Langenfeld, Lauren E. Payne, Bruce Bugbee 2022 Utah State University

Nutrient Management For Recirculating Hydroponics, Noah J. Langenfeld, Lauren E. Payne, Bruce Bugbee

Hydroponics/Soilless Media

Steady-state nutrient management is essential in hydroponic culture. Determination of an appropriate refill solution is attained using the principle of mass balance. Optimizing the ratio of nutrient elements and refill solution concentrations requires an understanding of the ratio of nutrients in tissue to water, which is measured as water use efficiency (WUE). This ratio is then multiplied by the desired concentration of nutrients in leaf tissue to determine the refill solution composition. Deep-flow hydroponics enables constant monitoring of solution parameters and root health. We have achieved a steady-state nitrogen concentration in solution by using an automated pH control system that ...


Water-Wise Landscape Ideas For Existing Landscapes, Shital Poudyal 2022 Utah State University

Water-Wise Landscape Ideas For Existing Landscapes, Shital Poudyal

All Current Publications

This fact sheet outlines five easy ways to convert an existing landscape to a water-wise landscape without substantial renovation for those who do not have the time, resources, or expertise to renovate the existing landscape completely.


Extending The Garden Season, Taun Beddes, Michael Caron, Sheriden M. Hansen, Jaydee Gunnell 2022 Utah State University

Extending The Garden Season, Taun Beddes, Michael Caron, Sheriden M. Hansen, Jaydee Gunnell

All Current Publications

Many homeowners have the dream of growing fresh vegetables year-round. Unfortunately, in colder climates, this is only possible using a complete greenhouse with supplemental heating/cooling and lights. Greenhouses can be excessively expensive to maintain and heat, making them impractical for most homeowners. This is not only due to cold winter temperatures but shorter day lengths and lower available light that must be offset artificially. There are practical, less expensive ways to obtain self-grown produce earlier and later in the growing season, though, by using season-extending techniques. These include using equipment such as cold frames, high tunnels, low tunnels, floating ...


Climate Resilient Potato Systems For The 21st Century And Beyond, Brett A. Lynn 2022 University of Nebraska-Lincoln

Climate Resilient Potato Systems For The 21st Century And Beyond, Brett A. Lynn

Doctoral Documents from Doctor of Plant Health Program

Climate change’s effects will dramatically reshape food systems and food security in the twenty-first century and beyond. Given potato’s susceptibility to heat and drought, climate change is poised to disproportionately affect potato production. Globally, potato is the fourth most important crop and yields a higher caloric density than any other commercial crop. Thus, disruptions to potato production bear serious implications for global food security.

In the United States, considerable potato production occurs in the arid West, which already faces water scarcity. This scarcity is anticipated to increase in many areas due to climate change. In addition to scarcity ...


Utah Hydroponic Solutions, Bruce Bugbee, Noah Langenfeld 2022 Utah State University

Utah Hydroponic Solutions, Bruce Bugbee, Noah Langenfeld

Nutrients

The Utah Hydroponic solutions for monocots and dicots have been developed and refined using mass balance principles coupled with tissue analysis from studies in 25-cm deep, continuously aerated, liquid hydroponics where there is no absorption or desorption with media.

These solutions provide guidelines for irrigation of soilless substrates, but adjustments may need to be made to account for the significant cation exchange capacity and thus nutrient absorption and desorption with the substrates.

These recipes were developed for greenhouse conditions with ambient CO2 and about 40% humidity. This results in a water use efficiency of about 3 grams per Liter ...


Genetically Explicit Model May Explain Multigenerational Control Of Emergent Turing Patterns In Hybrid Mimulus, Emily Simmons 2022 William & Mary

Genetically Explicit Model May Explain Multigenerational Control Of Emergent Turing Patterns In Hybrid Mimulus, Emily Simmons

Biology and Medicine Through Mathematics Conference

No abstract provided.


Watersmart: A Platform For Drought Forecast In Intermountain West With The Optimized Multi-Model Ensemble Approach, Wei Zhang 2022 Utah State University

Watersmart: A Platform For Drought Forecast In Intermountain West With The Optimized Multi-Model Ensemble Approach, Wei Zhang

Funded Research Records

No abstract provided.


Cytotoxic Activity Of Non-Specific Lipid Transfer Protein (Nsltp1) From Ajwain (Trachyspermum Ammi) Seeds, Saud O. Alshammari, Taibah Aldakhil, Qamar A. Alshammari, David Salehi, Aftab Ahmed 2022 Chapman University

Cytotoxic Activity Of Non-Specific Lipid Transfer Protein (Nsltp1) From Ajwain (Trachyspermum Ammi) Seeds, Saud O. Alshammari, Taibah Aldakhil, Qamar A. Alshammari, David Salehi, Aftab Ahmed

Pharmacy Faculty Articles and Research

Background

Trachyspermum ammi, commonly known as Ajwain, is a member of the Apiaceae family. It is a therapeutic herbal spice with diverse pharmacological properties, used in traditional medicine for various ailments. However, all previous studies were conducted using small molecule extracts, leaving the protein’s bioactivity undiscovered.

Aim

The current study aimed to demonstrate the cytotoxic activity of Ajwain non-specific lipid transfer protein (nsLTP1) in normal breast (MCF10A), breast cancer (MCF-7), and pancreatic cancer (AsPC-1) cell lines. Also, to evaluate its structural stability in human serum as well as at high temperature conditions.

Methods

The cytotoxic activity of Ajwain nsLTP1 ...


Assembly And Repair Of Photosystem Ii, Virginia M. Johnson 2022 Washington University in St. Louis

Assembly And Repair Of Photosystem Ii, Virginia M. Johnson

Arts & Sciences Electronic Theses and Dissertations

Photosystem II is a light-driven water-plastoquinone oxidoreductase present in cyanobacteria, plants, and algae. It is the photosynthetic membrane protein complex responsible for oxidizing water into molecular oxygen, which is necessary for life as we know it. As a multi-subunit membrane-protein-pigment complex, Photosystem II undergoes a complex cycle of assembly, damage, and repair called the Photosystem II lifecycle. This cycle must consistently occur to maintain a high level of photosynthetic activity at the cellular level. Cyanobacteria, oxygenic photosynthetic bacteria, are frequently used as model organisms to study oxygenic photosynthetic processes due to their ease of growth and genetic manipulation. Cyanobacterial PSII ...


Evaluating Cover Crops To Determine The Best Management Practice For The Suppression Of Tall Waterhemp And Italian Ryegrass, Samuel R. Reeves 2022 University of Tennessee, Knoxville

Evaluating Cover Crops To Determine The Best Management Practice For The Suppression Of Tall Waterhemp And Italian Ryegrass, Samuel R. Reeves

Theses and Dissertations

To combat herbicide resistance among weeds, non-herbicide methods of control, such as cover crops, are becoming widely adapted. Experiments were conducted to determine how to effectively establish and manage cover crops in order to suppress tall waterhemp and Italian ryegrass and to assess their overall impact on soybean growth and yield. Various cover crop establishment methods were evaluated, and it was determined that interseeding at the R7 growth stage of soybean was the least effective method for proper cover crop establishment. Biomass data demonstrated that interseeding created the least amountof cover crop biomass, with no differences found among the other ...


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