Agriculture Commons^™

Consumer Perceptions Of Hemp-Fed Aquaculture, Jillian Hyink, Brandon R. Mcfadden, Saroj Adhikari, Brandy E. Phipps, Tyler Mark, Waldemar Rossi, Craig Schluttenhofer, Seong D. Yun

Agricultural Economics Faculty Publications

Global demand for seafood has increased significantly in recent decades and is projected to continue rising. Aquaculture production has increased in the United States and globally to meet this demand, offering a relatively sustainable supplement to wild fish supplies. However, increased production further strains natural populations of pelagic species used to make fishmeal and fish oil into feedstocks, raising production costs and introducing safety concerns associated with fish consumption. A potential alternative feed ingredient is hemp, which can provide a cost-effective and nutritious feed for carnivorous fish. Moreover, hemp could meet the requirements for the final product to carry a …

Gamma Sigma Delta, Nebraska Chapter Newsletter, Issue #67 April 2025

Gamma Sigma Delta, Nebraska Chapter: Newsletters

President's message, Deb VanOverbeke

Student awards: Outstanding Junior Lara Arnold, Outstanding Senior Emily Eilers, Graduate Award Caitlin Ross

Dues and membership information

Faculty awards: Research Award Samodha Fernando, Teaching Award Gary Sullivan, Extension Awards Jenny Nixon and Bijesh Maharjan, Award of Merit Mike Boehm

Gamma Sigma Delta committees 2025

Foundation fund information

New members inducted

In memoriam: Dorothy "Dotti" Mott Callahan (May 4, 1942-August 12, 2023); Frank Michael Zoz (November 5, 1936-December 9, 2023); Duane Calvin Acker (March 13, 1931-December 13, 2024); John C. Owens (1944-2024); Duane A. Olson (July 17, 1935-January 5, 2025); Roger W. Mandingo (April 21, 1939-January …

Louisiana Agricultural Magazine, Spring 2025

Louisiana Agriculture

Growing fruits and pecans is a part of Louisiana’s agricultural heritage. Citrus trees have been planted here for three centuries, and the state is famous for strawberries. Pecans and mayhaws are native to the state, and they are beloved by Louisianans. Some of these fruits have become industries worth millions of dollars, while others have become popular for home production.

This issue of Louisiana Agriculture focuses on the efforts of LSU AgCenter Extension experts working to foster home fruit production and support the fruit and pecan industry in Louisiana. Through their research and extension programs, they provide homeowners and commercial …

Ecological Restoration And Ecosystem Memory Of Wildlife Forage And Understory Diversity In A Young Pine Monoculture Plantation In Central-Interior British Columbia, Julia Claire Bizon

Aspen Bibliography

Ecological restoration has recently taken center stage in the rehabilitation of degraded forest ecosystems to improve multifunctionality, biodiversity, and wildlife habitat conservation. The research summarized herein assessed the efficacy of variable stand density thinning (200, 400, and 600 stems/ha) and artificial canopy gaps (0.2, 0.5, 1.0, 2.0 ha in size) as potential restoration treatments to enhance wildlife forage and native biodiversity in a young lodgepole pine (Pinus contorta var. latifolia Engelm. ex S. Wats.) forest in central-interior British Columbia. Field data collection was conducted from May-August, 2023 to assess the early response (1-3 years post-treatment) of the forest …

Evaluation Of The Global Durum Panel (Triticum Turgidum Ssp. Durum) For Wheat Streak Mosaic Virus Resistance, Winter Survival, And Seed Characteristics, Megan Engel

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

The majority of durum wheat (Triticum turgidum spp. durum; AABB; 2n=4x=28) is predominantly grown in the northern Great Plains of the United States, and is used in the production of semolina, a coarse flour that makes pasta and couscous. Durum has been widely regarded for being more tolerant to abiotic stress, due to its ability to withstand drought and high temperatures. In this thesis, we conducted greenhouse, field, and lab studies, for the traits wheat streak mosaic virus (WSMV), winter survival, and single kernel characteristics of the Global Durum Panel version 2 (GDPv2 n = 976), a panel …

Climate And Crop Modeling For New England Agricultural Climate Change Adaptation, Madeline K. Wolfe

Geography Undergraduate Senior Theses

As climate change brings increased temperatures and precipitation variability to New England, it is imperative to understand the ways that farmers make decisions about agricultural climate change adaptation for their corn farms. Dairy farming is the largest agricultural industry in New England, with corn being a primary crop to feed these cattle. This project seeks to understand how climate modeling and crop modeling are and are not useful for these corn farm decisions, and contributes research about what types of information are useful and available to farmers making adaptation decisions. Crop modeling over New England reveals that corn farming in …

Arkansas Cotton Variety Tests 2024, F. Bourland, J. Gann, B. Lovelady, B. Guest Jr., J. Mcalee, L. Martin, Z. Treadway, C. Henderson

Arkansas Agricultural Experiment Station Research Series

The primary goal of the Arkansas Cotton Variety Tests is to provide unbiased data regarding the agronomic performance of cotton varieties and advanced breeding lines in the major cotton-growing areas of Arkansas. This information helps seed companies establish marketing strategies and assists producers in choosing varieties to plant. These annual evaluations will then facilitate the inclusion of new, improved genetic material in Arkansas cotton production. Adaptation of varieties is determined by evaluating the lines at five University of Arkansas System Division of Agriculture research sites (Manila, Keiser, Judd Hill, Marianna, and Rohwer). The 2024 tests at Keiser were adversely affected …

Evaluating 51 Years Of The High School Range Camp, Cory Farnsworth, Ashley Longmore, Eric Thacker

Outcomes and Impact Quarterly

Established in 1973 by Utah State University (USU) Extension and the Utah Society for Range Management, Utah’s high school Range Camp has provided students with immersive experiences in sustainable rangeland practices for over five decades. Survey findings revealed that the camp had a significant impact on the educational paths and careers of the youth. Many participants continued to apply what they learned, demonstrating the camp’s lasting impact. Ongoing efforts focus on improving data collection, monitoring FFA competition performance, and expanding recruitment. Range Camp effectively guides youth toward higher education and careers related to the range while promoting responsible rangeland management.

Cultivating Community And Commerce: A Summary Of The Statewide Social And Economic Impacts Of Utah Farmers Markets, Jaclyn Pace, Bryn Watkins, Roslynn Mccann, Steven Price

Outcomes and Impact Quarterly

Data collected from six markets throughout the market seasons between 2023 and 2024 highlights the transformative impact of Utah’s farmers’ markets on the state’s economy, health, and sense of community. According to market patrons, Utah’s farmers' markets are vital economic and social hubs supporting local agriculture, small businesses, and community well-being.

Novel Approaches To Analyze Consumer Behavior And Policies To Promote Sustainable Consumption, Bhagyashree Katare, Xuejian Wang, Shuoli Zhao, Jacqueline Yenerall

Agricultural Economics Faculty Publications

Technological advancements, such as online grocery shopping, have significantly transformed consumer retail environments and experiences. Effectively studying consumer behavior in these new environments requires the use of novel methodological approaches, which will also aid in developing interventions to encourage sustainable consumption. This paper begins by providing an overview of the current literature on novel approaches to analyzing consumer behavior, then provides an empirical application by examining consumer decision-making pathways within an online grocery shopping platform. Specifically, the paper focuses on exploring the consumers’ digital footprints, such as page visits, product additions and removals, and interactions with information labels to identify …

Growing South Dakota (Spring 2025), College Of Agriculture, Food And Environmental Sciences

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

[Page] 2 Keeping South Dakota's food supply safe
[Page] 6 Controlling environmental listeria
[Page] 8 Inaugural 2+2 vet program class graduates
[Page] 10 Faculty honored for excellence
[Page] 12 New leader for agronomy, horticulture, plant science
[Page] 14 Students spend spring break in South Africa
[Page] 16 Hadacek offers advice to fellow graduates
[Page] 17 Park Interpretation and Management Club starts
[Page] 18 On the front lines with invasive species
[Page] 22 Director Karla Trautman retires
[Page] 24 Helping navigate precision ag
[Page] 26 Growing bigger, better beef
[Page] 28 Jackrabbits Then and Now

A Practical Guide To Uav-Based Weed Identification In Soybean: Comparing Rgb And Multispectral Sensor Performance, Kelvin Betitame, Cannayen Igathinathane, Kirk Howatt, Joseph Mettler, Cengiz Koparan, Xin Sun

Agricultural Education, Communications and Technology Faculty Publications and Presentations

Precision agriculture relies heavily on accurate, efficient, and economical methods to distinguish between crops and weeds of various types. The advancement of unmanned aerial vehicle (UAV) technologies provides practical approaches for generating land-cover maps that are essential for monitoring and managing crop fields affected by various weeds. Although the overall cost of scouting crop fields with UAVs may be low and practical, it varies depending on the sensors used; and the existing studies have mainly focused on weed detection methods but not compared the sensors' performance. Therefore, to address this knowledge gap, this research aims to compare a UAV-mounted visual …

Genetic And Soil Influences On The Grapevine Rhizosphere Microbiome, Lauren M. Quackenbush

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

In vineyard cropping systems, the rhizosphere microbiome arises through recruitment and filtering of the bulk soil microbiome shaped over time by soil carbon and nitrogen, climate, pH and historical legacies of vineyard management. The recruitment and filtering steps occur under the genetic influences of rootstock and scion that together drive variability in rhizosphere microbiome diversity and composition.

This study compares rhizosphere microbiomes of four Pinot Noir blocks under two rootstocks (101-14 and 420A) and four scions (777, 828, Calera, Mt. Eden). Core microbiomes were consistent across all replicates. The most abundant bacterial phyla were Actinobacteriota, Proteobacteria, and Acidobacteriota …

Vitamin A Fortification: Key Factors And Considerations For Effective Implementation, Joohun Han, Alvaro Durand-Morat, Khondoker Abdul Mottaleb

Agricultural Economics and Agribusiness Faculty Publications and Presentations

Vitamin A fortification plays a crucial role in achieving long-term economic development in developing countries by supporting the growth and development of human capital. While fortification programs involve a range of nutritional, agricultural, economic, and political considerations, there is a lack of a comprehensive overview of the topic in the literature. Our review highlights the importance of holistic approach in designing fortification programs: the effective program should consider (a) the agronomic, economic, and administrative capability of the target regions in regard of fortification method and vehicle to maximize effectiveness; (b) strategies to ensure the producers' and consumers' adoption to enhance …

Review On Biological Management Of Bactrocera Zonata Through Pathogenic Activity Of Beauveria Bassiana, Sana Ullah, Hafiz Muhammad Sajid Ali, Syed Husnain Kumail Naqvi, Muhammad Ziaullah, Farhan Ali, Sana Sarfaraz, Mamoona Kanwal

Journal of Bioresource Management

Bactrocera zonata is the destructive pest of peach, mango, and banana by causing significant economic losses. It reduces fruit quality which directly causes decline in export of these economical fruits. Many management strategies were carried to suppress the population of this invasive pest. The use of chemical insecticides in the orchard for control of B. zonata is restricted because insecticides cause several complications in fruit health and makes fruits unfit for human consumption. Due these drawbacks of chemical control, Biological control strategies are preferred for better management of B. zonata. Entomopathogenic fungi are potential bio-control agent against many insect …

Aerial Phytomass And Carbon Sequestrated By The Kitshanga Forest Massif In The Wamba Valley In Dr-Congo, Mayanu Pemba, Ntalakwa Makolo, Kidikwadi Tango, Lubini Ayingweu

Journal of Bioresource Management

Aerial phytomass and carbon sequestrated by the Kitshanga forest massif in the Wamba valley in DR-Congo. The general objective was to evaluate the aerial phytomass and the carbon contained in the ligneous tissues of the trees. Specifically, the research aims to: (i) inventory all individuals in the Kitshanga gallery forest; (ii) identify the species in the study area; (iii) determine the floristic composition and density of the stand studied and (iv) evaluate the phytomass and the carbon sequestered by this vegetation. Inventory devices full on 1 hectare subdivided by 400 m² to obtain 25 plots which constitute the size of …

Aspen Health On National Forests In The Northern Rocky Mountain Region (2008/2009 To 2024), James T. Blodgett, Kurt K. Allen, Megan Wilson, Bradley Lalande

Aspen Bibliography

Quaking aspen (Populus tremuloides) is a widely distributed species in the western United States, but in the northern Rocky Mountain Region it is a rare forest component. In national forests (NF) of the northern Rocky Mountain Region this species comprises only 1% of the Bighorn, 3% of the Black Hills, and 1% of the Shoshone cover types (DeBlander 2002, Menlove 2008, Witt 2008). Since aspen forests provide increased species richness, support wildlife, are an important component of watersheds, and have aesthetic value, there are concerns regarding the health of this relatively rare forest cover type.

A Case Of Milkweed Poisoning In Cattle In Colorado, Raye Walck, Brett Webb, Steve Ensley, Daniel Cook

Poisonous Plant Research (PPR)

Milkweeds, Asclepias spp., are herbaceous perennials of the Apocyanaceae family. Milkweeds contain several cardiac glycosides, cardenolides, that are toxic. Clinical signs associated with milkweed toxicity are generalized weakness, difficulty in breathing, rapid weak pulse, bloating, violent spasms, paralysis, and death. Here we report a clinical case of milkweed toxicity in cattle due to contaminated hay. Clinical signs observed in the poisoned animals were consistent with cardenolide toxicity. Milkweed was detected in the rumen contents of the poisoned cow using DNA metabarcoding. In summary, multiple lines of corroborative evidence were used to make the diagnoses of milkweed poisoning in this case.

Efficiency Of Labor In Winter Pruning Of Apple Trees Using Technological Innovations, Élio Fillipi Dos Santos, Wendel Paulo Silvestre, Lessandra Silva Rodrigues, Carine Cocco

School of Earth, Environmental, & Marine Sciences Faculty Publications

The increase of new technologies in fruit-growing crops has increased productivity in cultural practices and helped farmers expand their production areas. This work aimed to quantify labor performance in winter pruning of apple trees, using manual and electronic scissors associated with utilizing a pruning platform and ladders. The treatments consisted of two types of pruning shears and two support systems. A pruner carried out pruning for 16 days, with a journey of 10 h per day. The average yield in manual pruning with a ladder was 21.35 plants pruned per hour per man. Using a platform, the yield increased to …

Additionality Of Solar Tax Incentives Under Community Choice Aggregation In Ohio, Michael L. Smith, Carson Reeling, Michael D. Wilcox

Department of Agricultural Economics Faculty Publications

In the State of Ohio, the electric regulatory landscape permits local governments to become energy suppliers to residents and small businesses through community choice aggregation (CCA). Some CCAs provide enrollees 100% renewable electricity. Concurrently, the federal government offers an income tax credit (ITC) for the purchase of a solar array. With policy incentives, it is important to ensure they encourage behavior beyond the baseline scenario without the ITC. This is known as “additionality.” Renewable aggregation programs may crowd out the benefits of the ITC, violating additionality. This paper assesses additionality of the ITC in the context of Ohio’s CCA programs. …

Contrasting Effects Of Climate Warming On Hosts And Parasitoids: Insights From Rocky Mountain Aspen Leaf Miners And Their Parasitoids, Alisha A. Shah, Emily Hamant, Juan G. Rubalcaba, Beau Larkin, Andrew A. Forbes, H. Arthur Woods

Aspen Bibliography

Because temperature has pervasive effects on biological rates, climate warming may alter the outcomes of interactions between insect hosts and their parasitoids, which, for many host species, constitute the single largest source of mortality. Despite growing interest in parasitoid-host responses due to climate change, there are few empirical tests of thermal tolerance differences between non-model lepidopteran hosts and their parasitoids and almost none from mountain ecosystems where warming is occurring more rapidly. We examined the thermal ecology of a host–parasitoid interaction in the Rocky Mountains using the wild populations of the aspen leaf miner (Phyllocnistis populiella) and a …

Draft Genome Data Including Functional Annotation Of An Emerging Fungal Pathogen (Neodothiora Populina) Causing A Canker Disease Of Trembling Aspen In Interior Alaska, Ursel M. E. Schütte, Mace Wages, Aaron Buechlein, Jorda P. Kovash, Danielle C. Wrenn, Tereza Smrhova, Andrea Zubrova, Doug B. Rusch, Loretta M. Winton, Gerard C. Adams, Roger W. Ruess, Mary Beth Leigh, Devin M. Drown

Aspen Bibliography

Neodothiora populina is a black yeast-like fungus in the family Dothioraceae. It causes an aggressive canker disease of trembling aspen that results in widespread mortality of aspen across the boreal forest of Interior Alaska. Here we report a high-quality draft genome including functional annotation of this emerging fungal pathogen based on Oxford Nanopore Technologies long-read sequences. Our initial genome assembly totaled 23,960,169 bp and contained 18 contigs, and we identified 7,343 genes. This resource announcement provides new genomic data that are useful long term for improving our understanding of forest health in Alaska.

Nebraska Women In Agriculture Conference Marks 40 Years, Lindsey Mckeever, Sarah Sivits, Jessica J. Groskopf

Cornhusker Economics

The Nebraska Women in Agriculture program marked 40 years of educating and empowering females in farming, ranching, and agribusiness, with nearly 370 people attending its annual conference on February 20 and 21, 2025, in Kearney.

Two Unique Cases Of Ponderosa Pine Needle-Induced Abortions, Kevin D. Welch, Megan A. Dietz, Steven E. Edmonds, Dale R. Gardener, Daniel Cook

Poisonous Plant Research (PPR)

Ponderosa pine (Pinus ponderosa) needles can induce abortions in cows when consumed during the last trimester of pregnancy. Traditionally pine needle-induced abortions occur in areas where cattle are forced into a stand of ponderosa pine trees to seek shelter and feed during a winter storm that is either very cold, has heavy snow or high winds. However, here we report two incidences of pine needle-induced abortions in cattle that were unique. In one case, there was no weather-related event that forced the cattle into the stand of pine trees, rather the cattle went into the pine trees seeking …

Racial Differences In Knowledge, Attitudes Toward Vaccination, And Risk Practices Around Lyme Disease In The United States, Madiha Shafquat, Niyati Patel, Brandon Mcfadden, James H. Stark, L. Hannah Gould

Agricultural Economics and Agribusiness Faculty Publications and Presentations

Introduction Lyme disease (LD) incidence in the United States is highly regional, with most cases occurring in 16 high-incidence jurisdictions. LD incidence and severity of disease have been found to vary by race. This study describes racial differences in knowledge, attitudes toward vaccination, and risk practices related to LD.Methods Four web-based surveys were conducted with adults and caregivers of children in high-incidence jurisdictions and 10 states neighboring them. Respondents were recruited via an established online panel to represent the general population. Self-reported race was pooled into 3 categories: 'White', 'Black or African American', and 'Other' for analysis. Analyses were conducted …

Bryce Canyon Aspen: Recent Trends, Future Actions, Paul C. Rogers

Aspen Bibliography

In cooperation with Bryce Canyon National Park, we undertook a survey of quaking aspen (Populus tremuloides Michx.) conditions throughout the Park with the intention of better understanding conditions and prescribing corrective measures where needed. There are clear disparities within the Park between sustainable aspen conditions and failing stands. Based on condition of mature trees, but most importantly regeneration and recruitment of juvenile stems, most aspen forests within Bryce Canyon are in poor condition. Aspen recruitment—generally sapling-sized trees that have survived browsing ungulates—is the most important metric of future stand resilience and here we found 83% of all aspen sample …

Variation In Response To Phosphorus Among Sweetpotato (Ipomoea Batatas L.) Cultivars, Jeffrey Cole Denis Gregorie

LSU Doctoral Dissertations

Phosphorus (P) is essential for plant growth and is often a major limiting nutrient in agriculture. In sweetpotato (Ipomoea batatas), studies on the role of P on storage root yield have been limited because of the lack of response and inconsistent results across cultivars and years. Growing evidence shows that current phosphate (Pi) fertilizer rates can be reduced while maintaining productivity. Newly published molecular evidence shows differential expression of phosphate starvation response genes among sweetpotato cultivars, further supporting the hypothesis of cultivar-specific Pi sensitivity. The research herein sought to characterize root system architecture and yield response to Pi …

Nebraska Beef Cow Breeding Herd As Capital Stock, Richard Perrin, Margarida Noelia De Aguiar Cunha Souza, Lilyan E. Fulginiti

Cornhusker Economics

Throughout her lifetime, the capital stock value of a cow first rises as the size/quality of calves increase, then declines because there are fewer calves expected over her remaining lifetime. The value later in life begins to rise in anticipation of culling value.

We estimate the age distribution of the Nebraska cow herd every year, then we estimate the capital value of each cohort. Adding these values across ages and adjusting to 2015 prices, we obtain the series of capital values, measured in terms of 2015 dollars.

In addition, we calculate the value of the annual flow of services provided …

Growing The Future: Community Gardens In Hillsborough County, Florida, Nicole M. Kennady

USF Tampa Graduate Theses and Dissertations

This project was an evaluation on community gardens in Hillsborough County, Florida from May 2024 to November 2024, built off of Homegrown Hillsborough’s first year evaluation of the current Hillsborough County food system. Homegrown Hillsborough is a network of community members with a mission to grow a strong food system in Hillsborough County by assisting in all areas of the food system from food production to food waste. Homegrown Hillsborough plans to act as a development initiative focused on community nutrition. Over the next two years, Homegrown Hillsborough plans to focus on food production, food access, and economic development. Through …

Integrating E-Commerce To Reduce Postharvest Losses In Rural Cameroon, Maurice Tchasso

Walden Dissertations and Doctoral Studies

E-commerce has the potential of assisting the agriculture market to curb postharvest losses by connecting new and existing customers to agricultural products more efficiently. The purpose of this qualitative phenomenological study was to explore and describe the lived experiences of successful farmers in rural Cameroon to obtain insights into the e-commerce factors and strategies they use to manage and reduce postharvest losses. The study sample was 20 rural Cameroonian farmers using e-commerce in reducing postharvest losses. The conceptual framework for this study was Rogers’s diffusion of innovation theory. The data collection occurred through virtual interviews with the participants and their …