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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 ...


A Glass Bead Semi-Hydroponic System For Intact Maize Root Exudate Analysis And Phenotyping, Martha G. Lopez-Guerrero, Peng Wang, Felicia Phares, Daniel P. Schachtman, Sophie Alvarez, Karin V. van Dijk 2022 University of Nebraska–Lincoln

A Glass Bead Semi-Hydroponic System For Intact Maize Root Exudate Analysis And Phenotyping, Martha G. Lopez-Guerrero, Peng Wang, Felicia Phares, Daniel P. Schachtman, Sophie Alvarez, Karin V. Van Dijk

Agronomy & Horticulture -- Faculty Publications

Background: Although there have been numerous studies describing plant growth systems for root exudate collection, a common limitation is that these systems require disruption of the plant root system to facilitate exudate collection. Here, we present a newly designed semi-hydroponic system that uses glass beads as solid support to simulate soil impedance, which combined with drip irrigation, facilitates growth of healthy maize plants, collection and analysis of root exudates, and phenotyping of the roots with minimal growth disturbance or root damage. Results: This system was used to collect root exudates from seven maize genotypes using water or 1 mM CaCl2 ...


Shallots In The Garden, Emmalee Rolfe, Dan Drost 2022 Utah State University

Shallots In The Garden, Emmalee Rolfe, Dan Drost

All Current Publications

This fact sheet provides information about growing shallots, a cool-season vegetable that grows best in full sun and fertile, well-drained soil. The fact sheet offers reliable information about varieties, soil preparation, planting and spacing, fertilization, harvesting and storage, nutrition facts, and problems like weeds and insects and diseases that affect shallots.


Lamb's Lettuce In The Garden, Evan Christensen, Dan Drost 2022 Utah State University

Lamb's Lettuce In The Garden, Evan Christensen, Dan Drost

All Current Publications

This fact sheet provides information on lamb's lettuce, also known as mâche, corn salad, fetticus, and Nüssli salat. It is native to southern Europe and a cool-season vegetable grown for edible leaves that add a mild, nutty flavor to any salad. This fact sheet offers reliable information about recommended varieties, how to grow lamb's lettuce, harvesting and storage, nutrition facts, and problems such as weeds, pests, and diseases.


Characterization Of The Function Of Pprgtb2 From Mutant Phenotypes, Briana L. Seibert, Hyun Jin Jung, Mark P Running 2022 University of Louisville

Characterization Of The Function Of Pprgtb2 From Mutant Phenotypes, Briana L. Seibert, Hyun Jin Jung, Mark P Running

The Cardinal Edge

Protein prenylation, a common lipid post-translational modification, is required for growth and development in eukaryotes. One type, , but its biological function is not well known. The moss Physcomitrella patens (P. patens) was used as a model organism due to its simple structure, limited cell types, sequenced genome, and its high gene targeting efficiency. P. patens has one copy of Rab-GGT α subunit (PpRGTA1) and two copies of β subunit (PpRGTB1 and PpRGTB2). It has been found that the knockout of either PpRGTB1 or PpRGTB2 results in no visible phenotype, which indicates that these genes must be functionally redundant. The knockout ...


Associations Between Cannabis, Psychosis, And Schizophrenia In Adolescents, Lauren Moment 2022 University of Colorado - Denver

Associations Between Cannabis, Psychosis, And Schizophrenia In Adolescents, Lauren Moment

Academic Leadership Journal in Student Research

The effects of cannabis use on the brain, mind, and body have been studied for decades. The developing brain, particularly the adolescent and young adult brain, undergoes critical development that makes it especially susceptible to the effects of cannabis use. Among the adverse effects of cannabis use in adolescence and young adulthood, psychosis and psychotic disorders (e.g., schizophrenia) have been examined. The association of cannabis use with schizophrenia was first elucidated in a Swedish study of army conscripts. Specifically, conscripts reported their cannabis use exposure and were followed longitudinally to assess the emergence of schizophrenia. The authors found that ...


A Brief Review Of The Impact Of Silver Nanoparticles On Agriculture And Certain Biological Properties: A Case Study, Sushmashree Krishnappa, Shankramma Kalikeri, Raj Kumar H. Garampalli, Lingaraju H G, Charan Kumar Kachintaya 2022 Division Nanoscience and Technology, School of Natural Sciences, JSS Academy of Higher Education and Research, Sri Shivarathreeshwara Nagara, Mysuru – 570 015, Karnataka, India.

A Brief Review Of The Impact Of Silver Nanoparticles On Agriculture And Certain Biological Properties: A Case Study, Sushmashree Krishnappa, Shankramma Kalikeri, Raj Kumar H. Garampalli, Lingaraju H G, Charan Kumar Kachintaya

International Journal of Health and Allied Sciences

Nanotechnology is progressively becoming a popular field of research because it has been successful in changing our agricultural and food systems. According to research published by the UNFAO, agriculture as well as its derivatives would be in high demand sooner or later, owing to nutritional changes. Nanoparticles have been reported to be used in an agricultural sector, because of its capacity to encourage crop growth and yield. Among metal nanoparticles, Silver Nanoparticles (AgNPs) are attracting a lot of attention. We have highlighted some of the agricultural uses of AgNPs, which include pest management, plant disease detection, crop enhancement, and crop ...


Forage News [2022-09], Department of Plant and Soil Sciences, University of Kentucky 2022 University of Kentucky

Forage News [2022-09], Department Of Plant And Soil Sciences, University Of Kentucky

Forage News

No abstract provided.


Arkansas Wheat Performance Tests 2021-2022, J. F. Carlin, R. B. Morgan, R. D. Bond, D. E. Moon 2022 University of Arkansas, Fayetteville

Arkansas Wheat Performance Tests 2021-2022, J. F. Carlin, R. B. Morgan, R. D. Bond, D. E. Moon

Arkansas Agricultural Experiment Station Research Series

Wheat variety performance tests are conducted each year in Arkansas by the University of Arkansas System Division of Agriculture’s Arkansas Agricultural Experiment Station, Department of Crop, Soil, and Environmental Sciences. The tests provide information to companies developing varieties and marketing seed within the state and aid the Arkansas Cooperative Extension Service in formulating variety recommendations for small-grain producers. The tests are conducted at the Northeast Research and Extension Center at Keiser, the Vegetable Substation near Kibler, the Lon Mann Cotton Research Station near Marianna, the Pine Tree Research Station near Colt, and the Rohwer Research Station near Rohwer. Specific ...


Summaries Of Arkansas Cotton Research 2021, Fred Bourland 2022 University of Arkansas, Fayetteville

Summaries Of Arkansas Cotton Research 2021, Fred Bourland

Arkansas Agricultural Experiment Station Research Series

While the basic growth and development of the cotton plant have not changed significantly in recent history, the business of cotton production is ever-changing. The last two years have seen us plant a crop just about as late as we thought possible, yet extended favorable conditions at season's end have been our salvation, helping to lead us to record yields. The economic environment over the last few years has been such that farmers need to produce record or near-record yields to advance. Unfortunately, production levels at the state yield average barely cover out-of-pocket expenses.

Great uncertainties exist for the ...


Western Australia's Bulk And Containerised Grain Exports In A National Context, Ross Kingwell, Dipesh Maharjan 2022 University of Western Australia

Western Australia's Bulk And Containerised Grain Exports In A National Context, Ross Kingwell, Dipesh Maharjan

Research Reports

This report describes containerised and bulk grain exports from Western Australia and all other main grain-producing Australian states. The types of grain, their export volumes and destinations, since 2011-12 until 2021-22 are described.


Genetic Sources Of Resistance To Potato Blackle Soft Rot Caused By Dickeya Dianthicola, Lucas K. Heroux 2022 University of Maine

Genetic Sources Of Resistance To Potato Blackle Soft Rot Caused By Dickeya Dianthicola, Lucas K. Heroux

Electronic Theses and Dissertations

Solanum tuberosum L. is the world's most important non-cereal food crop, capable of producing more food per land unit on less water than any other crop. Only rice, wheat, and maize are produced in larger quantities than potato. The potato tuber, a modified stem turned storage organ is nutrient dense and a staple in diets across the world. The potato crop is expected to grow and contribute significantly to the global food supply. However, potato production has increasingly been threatened by unfavorable environmental conditions, and susceptibility to pest and disease. Perhaps the most famous of all the Irish Potato ...


Continuous Ph Monitoring And Control: Selecting And Interfacing The Electrode, Controller, And Datalogger, Noah J. Langenfeld, Bruce Bugbee 2022 Utah State University

Continuous Ph Monitoring And Control: Selecting And Interfacing The Electrode, Controller, And Datalogger, Noah J. Langenfeld, Bruce Bugbee

Techniques and Instruments

pH control is essential to well-managed hydroponics. Here, we describe the selection and interfacing of electrodes, controllers, and loggers.


Utilizing Rnai Technology To Develop Novel Agricultural Pesticides, Ethan B. Zand 2022 Western

Utilizing Rnai Technology To Develop Novel Agricultural Pesticides, Ethan B. Zand

Undergraduate Student Research Internships Conference

A general description of why RNAi based pesticide technology is a breakthrough technology able to target only pests while not harming others. This presentation gives a summary of RNAi technology, the current drawbacks of conventional pesticides, and our research on how RNAi can be used against the two-spotted spidermite; a polyphagic pest that causes significant financial damage to Canadian and worldwide agriculture


My Summer Working With Two-Spotted Spider Mites, Renée A. Smith 2022 Western University

My Summer Working With Two-Spotted Spider Mites, Renée A. Smith

Undergraduate Student Research Internships Conference

Two-spotted spider mites are a polyphagous pest, capable of eating a magnitude of food crops which causes a large problem for Canadian agriculture. Their ability to consume various crops stems from their ability to adapt to various chemical defence mechanisms. This ability allows them to acquire resistance to many commonly used pesticides. This has resulted in large infections in Canadian farms with few options to prevent the pests from affecting crop yields. Take a look at my project if you'd like to see how the Grbic lab is working to combat this issue using genetic engineering techniques!


Fungal Co-Pathogenicity On Panax Quinquefolius, Andrea Ong 2022 Western University

Fungal Co-Pathogenicity On Panax Quinquefolius, Andrea Ong

Undergraduate Student Research Internships Conference

American ginseng (Panax quinquefolius) is a perennial crop commonly grown for its medicinal properties. Ginseng replant disease (GRD) is a condition that prevents the re-cultivation of ginseng in previous ginseng gardens and is normally associated with extensive root rot caused by the fungus Ilyonectria mors-panacis. My project aims to investigate the relationship common GRD fungal pathogens and their pathogenicity on 1 year old ginseng seedlings.


A Bacterial Microbiome Analysis Of Solarized Ginseng Garden Soils, Anka Colo 2022 Western University

A Bacterial Microbiome Analysis Of Solarized Ginseng Garden Soils, Anka Colo

Undergraduate Student Research Internships Conference

American ginseng (Panax quinquefolius) is a highly valued perennial crop grown for its roots during a four-year cultivation cycle. American ginseng is subject to ginseng replant disease (GRD) in which severe root rot develops in newly planted ginseng grown in a former ginseng garden. A common strategy to mitigating GRD is not available and techniques such as fumigation, fungicides, and biocontrol are ineffective, banned, or are slowly being phased out. Alternatively, soil solarization is a pre-plant technique used to treat soil to reduce disease inoculum and alter soil microbiomes. In summer 2019, a six-week soil solarization experiment was conducted in ...


Attitudes Toward Transgenic Corn Usage Among Amish & Conservative Mennonite Farmers In Ohio, Scot Long 2022 Marion Technical College

Attitudes Toward Transgenic Corn Usage Among Amish & Conservative Mennonite Farmers In Ohio, Scot Long

Journal of Amish and Plain Anabaptist Studies

Mass adoption and planting of genetically modified corn are part of the larger industrialized agricultural production system in the United States. Amish and conservative Mennonite farmers in the Holmes County settlement region offer an alternative production system often characterized by lower usage of chemical inputs, greater implementation of crop rotation, and significantly higher usage of hybrid versus GMO field corn. Moreover, the rationale among Amish/Mennonite farmers toward adoption of GMO (based on “convenience”) or rejection of GMO (based on “too many unknowns”) stems both from cultural diffusion of neighboring farms as well as variable need for nonfarm income. This ...


An Analysis Of Decolonization Efforts In Urban Agriculture: A Pathway To Indigenous Food Sovereignty And Cultural Revitalization, Sarah Fisher 2022 Ursinus College

An Analysis Of Decolonization Efforts In Urban Agriculture: A Pathway To Indigenous Food Sovereignty And Cultural Revitalization, Sarah Fisher

Environmental Studies Summer Fellows

My research focuses on applications of urban agriculture, relationships between Indigenous peoples and community-based agriculture projects, and decolonizing food systems. I provide insight on colonialist tendencies, or ways in which the marginalization of Indigenous peoples is deeply entrenched within government, educational, and other leadership settings, as a way to evaluate and restructure urban agriculture projects to serve, represent and heal Native communities. Conventional urban agriculture has many known benefits, including its capacity for food production; however, the extent to which Indigenous communities participate in and benefit from urban agriculture has not been widely studied. Ongoing exclusion of Indigenous peoples from ...


Application Of Organic Fertilizers For Lawn Establishment And Maintenance In Louisiana, Matthew Lambert 2022 Louisiana State University

Application Of Organic Fertilizers For Lawn Establishment And Maintenance In Louisiana, Matthew Lambert

LSU Master's Theses

Landscape contractors are increasingly interested in organic products for Louisiana's residential and commercial turfgrass areas. However, the use, motivations, and barriers to adopting organic practices in the commercial turfgrass and landscape industry are undocumented. A survey with Louisiana Turfgrass Association (LTA) members to gauge their perceptions on current and future use of organic products in Louisiana was performed; and a field trial was conducted to evaluate organic fertilizers during turfgrass establishment. Substantial majorities of turfgrass professionals are currently applying organic fertilizers and believe organic product use will increase due to consumer demands, potential governmental regulation, and the belief that ...


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