Agriculture Commons^™

The Potential For Dickeya Dianthicola To Be Vectored By Two Common Insect Pests Of Potatoes, Jonas K. Insinga

Electronic Theses and Dissertations

Dickeya dianthicola (Samson) causing blackleg and soft rot was first detected in potatoes grown in Maine in 2014. Previous work has suggested that insects, particularly aphids, may be able to vector bacteria in this genus between plants, but no conclusive work has been done to confirm this theory. In order to determine whether insect-mediated transmission is likely to occur in potato fields, two model potato pests common in Maine were used: the Colorado potato beetle (Leptinotarsa decimlineata Say) and the green peach aphids (Myzus persicae Sulzer). Olfactometry and recruitment experiments evaluated if either insect discriminates between infected and …

Responding To Crisis: Farmer Mental Health Programs In The Extension North Central Region, Shoshanah Inwood, Florence Becot, Andrea Bjornestad, Carrie Henning-Smith, Andrew Alberth

Counseling and Human Development Faculty Publications

A number of current events are exacerbating farm stress. Extension and farm organizations have mobilizedresponses to an emerging mental health crisis among farmers. To evaluate these responses, we conducted anonline scan of resources to present a baseline typology of current mental health programs and response effortsin the 12-state Extension North Central Region. We classified responses by type of program, target audience,and delivery format. We identified the need to train mental health counselors and state suicide hotlineresponders on farm issues and farm culture.

Functional Dissection Of The Chickpea (Cicer Arietinum L.) Stay-Green Phenotype Associated With Molecular Variation At An Ortholog Of Mendel’S I Gene For Cotyledon Color: Implications For Crop Production And Carotenoid Biofortification, Kaliamoorthy Sivasakthi, Edward Marques, Ng’Andwe Kalungwana, Noelia Carrasquilla-Garcia, Peter L. Chang, Emily M. Bergmann, Erika Bueno, Matilde Cordeiro, Syed Gul A.S. Sani, Sripada M. Udupa, Irshad A. Rather, Reyazul Rouf Mir, Vincent Vadez, George J. Vandemark, Pooran M. Gaur, Douglas R. Cook, Christine Boesch, Eric J.B. Von Wettberg, Jana Kholova, R. Varma Penmetsa

College of Agriculture and Life Sciences Faculty Publications

“Stay-green” crop phenotypes have been shown to impact drought tolerance and nutritional content of several crops. We aimed to genetically describe and functionally dissect the particular stay-green phenomenon found in chickpeas with a green cotyledon color of mature dry seed and investigate its potential use for improvement of chickpea environmental adaptations and nutritional value. We examined 40 stay-green accessions and a set of 29 BC2F4-5 stay-green introgression lines using a stay-green donor parent ICC 16340 and two Indian elite cultivars (KAK2, JGK1) as recurrent parents. Genetic studies of segregating populations indicated that the green cotyledon trait is controlled by a …

From The Human To The Planetary: Speculative Futures Of Care, Miriam Ticktin

Publications and Research

This is largely a theoretical, speculative essay that takes on the question of what ‘care’ looks like at a moment when climate change is increasingly taking center stage in public and political discussions. Starting with two new practices, namely, humanitarian care for nonhumans and One Health collaborations, I seek to determine what forms of political care can incorporate the well-being of future generations and future iterations of the earth. After an exploration of One Health as an approach to planetary care, I ask what its parts enable us to think, despite its limitations; I focus on the new human-nonhuman assemblages …

Bird Dispersal As A Pre-Adaptation For Domestication In Legumes: Insights For Neo-Domestication, Hester Brǿnnvik, Eric J. Von Wettberg

College of Agriculture and Life Sciences Faculty Publications

No abstract provided.

Payment For Ecosystem Services: Incentives To Support Environmental Quality & Farming In Vermont, Stephen Posner, Taylor Ricketts, Eric Roy

Reports and Policy Briefs

Environmental quality is an ongoing concern in the Lake Champlain Basin. Vermont farmers are in a unique position to manage land in a way that maintains and improves environmental quality. A payment for ecosystem services (PES) program for Vermont would both support the economic vi- ability of Vermont farms and incentivize farmers to improve water quality and soil health. How- ever, conceptual and practical implementation challenges remain.

Perceptions Of Higher Education In Nonmetropolitan Nebraska: Research Report 19‐4, Rebecca Vogt, Cheryl Burkhart-Kriesel, Randolph L. Cantrell, Bradley Lubben, L. J. Mcelravy, Tim L. Meyer, Jason L. Weigle

Rural Futures Institute: Publications

Some recent national polls have shown a decline in confidence in higher education. The cited reasons for this decline are concerns about affordability, access and the political culture on campuses. Given these national trends, how do rural Nebraskans view the impacts of their education? Do they view higher education as important for individuals and the economy? Have these views changed over the past four years? What types of higher education institutions have their households attended? This paper provides a detailed analysis of these questions. This report details 1,776 responses to the 2019 Nebraska Rural Poll, the 24th annual effort to …

Chronic Kidney Disease From Non-Traditional Causes Throughout Central America, Abigail K. Watson

Senior Theses

Throughout many Central American countries, incidence of chronic kidney disease (CKD) has been on the rise. The disease mainly affects agricultural workers and differs from typical CKD. Patients in these countries often do not have preexisting conditions such as diabetes or hypertension known to be traditional causes of CKD. They also experience increased damage to the kidney tubules, rather than the glomeruli generally more heavily impacted. There has been speculation regarding the causes of CKDnT (chronic kidney disease of nontraditional causes), but no consensus has been reached. Two major hypotheses to explain the high prevalence among Central American sugarcane workers …

Trends In Well-Being In Nonmetropolitan Nebraska: Nebraska Rural Poll Research Report 19-3, Rebecca Vogt, Cheryl Burkhart-Kriesel, Randolph Cantrell, Bradley Lubben, University Of Nebraska-Lincoln, Tim L. Meyer, Jason L. Weigle

Rural Futures Institute: Publications

Nebraska’s economy remained strong in the beginning of 2019. However, the continued weakness of the agriculture sector had the possibility of hampering the state’s economic growth. In addition, the March flooding had the potential for negative economic effects. Given these challenges, how do rural Nebraskans feel about their community? Are they satisfied with the services provided by their community? How do rural Nebraskans believe they are doing and how do they view their future? How satisfied are they with various items that influence their well-being? Have these views changed over the past 24 years? This paper provides a detailed analysis …

Incidence And Prevalence Of Francisella Noatunensis Subsp. Orientalis (Fno) Pathogenic Infections In Feral Hawaiian Tilapia, Daquille Peppers

Biology Theses

Aquaculture has become a major food source for many countries and continues to grow each year. However, many of the fishes that are farmed are susceptible to pathogenic infections such as Francisellosis, a bacterial infection that contributes to disease and high mortality rate in many populations of farmed and wild fish around the world. In 1994, feral and farmed populations of tilapia (e.g. Oreochromis mossambicus) on Oahu, Hawaii were found to be infected with a novel Francisellosis strain, Francisella noatunensis subsp. orientalis (Fno). To prevent the spread of this pathogen, the Hawaii Department of Aquaculture (HDOA) initiated …

Perceptions Of Immigration Among Nonmetropolitan Nebraskans: Nebraska Rural Poll Research Report 19-2, Rebecca Vogt, Cheryl Burkhart-Kriesel, Randolph Cantrell, Bradley Lubben, L. J. Mcelravy, Tim L. Meyer, Jason L. Weigle

Rural Futures Institute: Publications

The percent of Nebraska’s population that is foreign born has steadily increased during the past decade. In fact, its growth in foreign born population since 2010 ranks in the top 10 among all states. Given these changes, are rural Nebraskans aware of recent immigrants in their community? How do they perceive immigrants and their impacts on rural Nebraska? How do they view various immigration policies? This paper provides a detailed analysis of these questions. This report details 1,776 responses to the 2019 Nebraska Rural Poll, the 24th annual effort to understand rural Nebraskans’ perceptions. Respondents were asked a series of …

Rentabilidad Económica De La Actividad Lechera De Unidades Demostrativas Del Programa Balde Lleno, En Río De Janeiro, Brasil, Marcos Aurélio Lopes, Flavio De Moraes, Fabio Raphael Pascotti Bruhn, Afonso Aurélio De Carvalho Peres, André Luis Ribeiro Lima, Eduardo Mitke Brandão Reis, Jesús Alfonso Sánchez Viafara

Revista de Medicina Veterinaria

El objetivo de esta investigación fue analizar la rentabilidad de 20 unidades demostrativas (UD) participantes del programa Balde Lleno (“Balde Cheio”), en Río de Janeiro, entre enero y diciembre de 2011. También se pretendió identificar los componentes que ejercen mayor influencia sobre el costo total y operacional efectivo, además del impacto de cada uno de ellos en los ingresos. Los datos fueron analizados con el software PASW 18.0. Se utilizó el modelo de regresión lineal múltiple con el método stepwise para identificar los componentes del costo de producción que más influenció en la margen líquida, la lucratividad y la rentabilidad. …

Impact Of Beta-Adrenergic Agonist Supplementation And Heat Stress On The Microbiome And Gastrointestinal Transcriptome Of Sheep, Erin M. Duffy

Department of Animal Science: Dissertations, Theses, and Student Research

Improving animal growth and efficiency are critical points of research as the world’s population and demand for agriculture products increase. Therefore, adaptions or changes in the gut are of interest to maximize growth efficiency and wellbeing of livestock. The gastrointestinal tract of the rumen plays many critical roles with the assistance of the associated microbial community. One way to improve animal performance is supplementation of β-adrenergic agonists (β-AA) which are commonly fed to cattle during the last 20-40 days of the finishing period, improving muscle growth by decreasing adipose deposition and increasing muscle accretion. Two β-AA, Ractopamine HCl (β1-AA) and …

Volume 15, Number 1 (Spring/Summer 2019), Ut Institute Of Agriculture

Tennessee Land, Life and Science Magazine

Issue Highlights:

• The four pillars of the Institute of Agriculture
• Alumna forges partnership amid Waldo Canyon fire
• Fishery biologists revive a river

Growing South Dakota (Summer 2016), College Of Agriculture, Food And Environmental Sciences

Growing South Dakota (Publication of the College of Agriculture, Food and Environmental Sciences)

[Page] 3 Celebration of Faculty Excellence
[Page] 6 Ag and Biosystems Engineering - Quarter Scale Tractor Team Named Reserve National Champs - Jackrabbit Wrestler Passionate About Sharing the Story of Pork - Mesonet Spray Tool Aids Precision Application Decisions
[Page] 10 Ag Business and Economics -POET Commodity Trading Fund
[Page] 12 Ag Education, Communication and Leadership - Leadership Opportunities Launch Recent Graduate to Career Readiness
[Page] 14 Agronomy, Horticulture & Plant Science - Local Foods Education Center Donates Over 5,000 Pumpkins - Seeding Success - Doug Malo Retires After 43 Years of Teaching - Howard Woodard's 29-Year Career Had a …

Community Involvement And Leadership In Nonmetropolitan Nebraska: Rural Poll Research Report 19-1, Rebecca Vogt, Cheryl Burkhart-Kriesel, Randolph Cantrell, Bradley Lubben, L. J. Mcelravy, Tim Meyer, Jason L. Weigle

Rural Futures Institute: Publications

Community leadership and involvement are important parts of community development. Rural communities rely on volunteers for many community development activities as well as local leadership positions. In smaller communities in particular, community members often take on multiple roles. Given these challenges, how involved are rural Nebraskans in community and political activities? How do they feel about the leadership in their community? How often do they have social interactions with others during a typical month? This paper provides a detailed analysis of these questions. This report details 1,776 responses to the 2019 Nebraska Rural Poll, the 24th annual effort to understand …

Population Genomic Analysis Of Mango (Mangifera Indica) Suggests A Complex History Of Domestication, Emily J. Warschefsky, Eric J.B. Von Wettberg

College of Agriculture and Life Sciences Faculty Publications

Trust Humans have domesticated diverse species from across the plant kingdom, yet much of our foundational knowledge of domestication has come from studies investigating relatively few of the most important annual food crops. Here, we examine the impacts of domestication on genetic diversity in a tropical perennial fruit species, mango (Mangifera indica). We used restriction site associated DNA sequencing to generate genomic single nucleotide polymorphism (SNP) data from 106 mango cultivars from seven geographical regions along with 52 samples of closely related species and unidentified cultivars to identify centers of mango genetic diversity and examine how post-domestication dispersal shaped the …

A Comparative Analysis Of Governance And Leadership In Agricultural Development Policy Networks, Jessica Rudnick, Meredith Niles, Mark Lubell, Laura Cramer

College of Agriculture and Life Sciences Faculty Publications

Agricultural development initiatives feature many public and private organizations working together across sectors and scales to pursue the goals of food security and climate resilience. Policy networks are considered a crucial ingredient for the learning and cooperation needed to effectively implement agricultural development projects and increase community resiliency, yet very little comparative empirical data has been collected to assess where and how these networks operate. We contribute to filling this gap by characterizing the governance and leadership patterns within agricultural development policy networks that connect organizations working on climate resilience and food security activities in 14 smallholder farming communities across …

Assessment Of Hearing Exposures And Personal Protective Equipment Use In Agricultural Workers, Kelsie M. Musil

Capstone Experience

Agriculture continues to rank as one of the most hazardous industries in the United States. This is in part due to the high number of hazardous exposures that farmers face, including respiratory and hearing exposures. The danger to workers can be reduced by properly wearing personal protective equipment (PPE). However, it has been shown that agricultural workers wear PPE at a low rate, in part due to inconvenience and poor accessibility of the equipment. There is little knowledge currently about how PPE are stored, maintained, and if they are used in a correct manner in specific exposure conditions by the …

Reporting Charcoal Rot In Chia And Developing A Susceptibility Assay, Reis M. Misaka, Hagop S. Atamian Dr., Julien Besnard Dr.

Student Scholar Symposium Abstracts and Posters

Chia (Salvia Hispanica) cross breeds were planted in the summer of 2018 with the intent of selective breeding for agricultural benefit. Preexisting pathogens in the soil caused 40-50% fatality of adult plants. This was surprising due to the precursory knowledge that chia has antibiotic and antifungal oils (Elshafie et. al. 2018); chia was only recently documented to be susceptible to Fusarium wilt (Fusarium oxysporum). The primary pathogen responsible was identified as Macrophomina phaseolina (aka charcoal rot); a widespread soilborne pathogen which has multiple commercial hosts (Su et. al. 2001).

M. phaesolina on wheat seed vector where used as …

The Role Of Inflammatory Pathways In Development, Growth, And Metabolism Of Skeletal Muscle In Iugr Offspring; Blood Gene Expression Of Inflammatory Factors As Novel Biomarkers For Assessing Stress And Wellbeing In Exotic Species., Robert J. Posont

Department of Animal Science: Dissertations, Theses, and Student Research

Our first study identified the effects of maternal inflammation-induced intrauterine growth restriction (MI-IUGR) on growth and muscle glucose metabolism in offspring supplemented with curcumin. MI-IUGR lambs exhibited asymmetric growth restriction at birth and 30d of age, but normal glucose-stimulated insulin secretion. Hindlimb glucose oxidation was reduced by MI-IUGR and not improved by curcumin supplementation. Ex vivo muscle glucose oxidation was reduced by MI-IUGR but improved somewhat by curcumin. These finding indicate that fetal programming responses to MI contribute to neonatal growth and metabolic deficits. Neonatal curcumin supplementation had minimal effect on growth deficits but may improve glucose metabolism. …

The Disparity Between Scientific Consensus And American Public Opinion Of Genetically Modified Organisms And Genetic Engineering, Matthew A. Cherubino

Student Publications

Genetically modified organisms (GMOs) and genetic engineering (GE) are accepted as safe and useful by the consensus of the scientific community. Their diverse utility has shown promise in addressing major challenges of the 21st century, including world hunger, global warming, and the prevalence of diet-related diseases (e.g. heart disease, cancer, diabetes, etc.). A 2014 Pew Research Center survey revealed that while 88% of scientists agreed that GM foods were safe to eat, only 37% of American consumers agreed. Furthermore, only 35% of U.S. adults trusted scientists to accurately inform the public about GMOs. To explain this disparity, I synthesize information …

Seeing Is Not Always Believing: Crop Loss And Climate Change Perceptions Among Farm Advisors, Meredith T. Niles, Sarah Wiener, Rachel E. Schattman, Gabrielle Roesch-Mcnally, Julian Reyes

College of Agriculture and Life Sciences Faculty Publications

As climate change is expected to significantly affect agricultural systems globally, agricultural farm advisors have been increasingly recognized as an important resource in helping farmers address these challenges. While there have been many studies exploring the climate change belief and risk perceptions as well as behaviors of both farmers and agricultural farm advisors, there are very few studies that have explored how these perceptions relate to actual climate impacts in agriculture. Here we couple survey data from United States Department of Agriculture farm service employees (n = 6, 514) with historical crop loss data across the United States to explore …

Non-Linear Regression Models For Time To Flowering In Wild Chickpea Combine Genetic And Climatic Factors, Konstantin Kozlov, Anupam Singh, Jens Berger, Eric Bishop-Von Wettberg, Abdullah Kahraman, Abdulkadir Aydogan, Douglas Cook, Sergey Nuzhdin, Maria Samsonova

College of Agriculture and Life Sciences Faculty Publications

Background: Accurate prediction of crop flowering time is required for reaching maximal farm efficiency. Several models developed to accomplish this goal are based on deep knowledge of plant phenology, requiring large investment for every individual crop or new variety. Mathematical modeling can be used to make better use of more shallow data and to extract information from it with higher efficiency. Cultivars of chickpea, Cicer arietanum, are currently being improved by introgressing wild C. reticulatum biodiversity with very different flowering time requirements. More understanding is required for how flowering time will depend on environmental conditions in these cultivars developed by …

Improving Access To Clean Water Through Service Learning, Rachel E. Gehr, Tolu Odimayomi, Carolina Tornesi Mackinnon

Engagement & Service-Learning Summit

No abstract provided.

Food And Earth Systems: Priorities For Climate Change Adaptation And Mitigation For Agriculture And Food Systems, Ana Maria Loboguerrero, Bruce M. Campbell, Peter J.M. Cooper, James W. Hansen, Todd Rosenstock, Eva Wollenberg

Rubenstein School of Environment and Natural Resources Faculty Publications

Human activities and their relation with land, through agriculture and forestry, are significantly impacting Earth system functioning. Specifically, agriculture has increasingly become a key sector for adaptation and mitigation initiatives that address climate change and help ensure food security for a growing global population. Climate change and agricultural outcomes influence our ability to reach targets for at least seven of the 17 Sustainable Development Goals. By 2015, 103 nations had committed themselves to reduce greenhouse gas emissions from agriculture, while 102 countries had prioritized agriculture in their adaptation agenda. Adaptation and mitigation actions within agriculture still receive insufficient support across …

Now I See: Photovisualization To Support Agricultural Climate Adaptation, Rachel E. Schattman, Stephanie Hurley, Martha Caswell

College of Agriculture and Life Sciences Faculty Publications

Published with license by Taylor & Francis Group, LLC. To remain viable, agricultural producers will need to adapt to changing climatic conditions in coming decades. Agricultural advisers play an important role in helping producers decide to adopt appropriate adaptation practices. Photovisualizations have the potential to complement currently utilized outreach and education strategies. This research uses a focus group approach to explore (1) whether photovisualizations can aid in decision-making about climate change adaptation, and (2) what characteristics of photovisualizations are most effective at conveying spatial aspects of adaptation practices. We found that photovisualizations generate rich discussions about ecological and economic effects …

Sharing The Gift Of Water: A Hoosier-Haitian Partnership, Lauren Ward

Purdue Journal of Service-Learning and International Engagement

Engagement Methods for International Food Security (YDAE 49100) provided an opportunity for enrolled students to travel abroad to Cap-Haitïen, Haiti. As both a course in agriculture and a service-learning study abroad, the overarching goal was to inspire, engage, and teach Purdue and Haitian students through service learning in agriculture. This was done by developing a project with teammates during the fall semester that was then presented to students in Haiti during the International Agri-Symposium at Université Antenor Firmin over winter break.

Does Household Capital Mediate The Uptake Of Agricultural Land, Crop, And Livestock Adaptations? Evidence From The Indo-Gangetic Plains (India), Sameer H. Shah, Courtney Hammond Wagner, Udita Sanga, Hogeun Park, Lia Helena Monteiro De Lima Demange, Carolina Gueiros, Meredith T. Niles

College of Agriculture and Life Sciences Faculty Publications

Farmers in the Indo-Gangetic Plains produce much of the wheat and rice grown in India. However, food production and millions of farm-based livelihoods in this region will continue to be adversely affected by hydro-climatic change and variation, reduced land productivity, and declining groundwater levels. Thus, agricultural adaptations are essential for protecting and improving upon intersecting goals of food security, poverty alleviation, and wellbeing. Household “capital” (e.g., natural, human, financial, physical, and social) is commonly cited as an indicator of livelihood adaptability and innovation. We develop a series of mediated structural equation models to empirically evaluate the validity of capital as …

Scaling Up Sustainability In Commodity Agriculture: Transferability Of Governance Mechanisms Across The Coffee And Cattle Sectors In Brazil, R. Hajjar, P. Newton, D. Adshead, M. Bogaerts, V. A. Maguire-Rajpaul, L. F.G. Pinto, C. L. Mcdermott, J. C. Milder, E. Wollenberg, A. Agrawal

Rubenstein School of Environment and Natural Resources Faculty Publications

A number of governance mechanisms address socio-environmental challenges associated with commodity agriculture in tropical forested countries. Governance mechanisms that prove effective in one agricultural sector are often applied to other sectors as well. For example, voluntary certification programs have been adopted by producers of commodities as diverse as beef, coffee, palm oil, and soy. However, there are substantial differences in the extent to which governance mechanisms scale up and achieve impact in different sectors. This paper analyzes how the potential for scaling up a particular governance mechanism is influenced by environmental, market, and social geographies that differ between sectors. Through …