Agriculture Commons^™

Menthalactone From Mentha Piperita L., A Monocot-Selective Bioherbicide, Adam Soltani

Honors Theses

The challenge of managing invasive weed species continues to affect the agricultural industry, presenting ecological, economic, and agronomic hurdles that lead to over 100 billion USD in annual crop losses globally. One such concern is the management of Agrostis stolonifera L., commonly known as creeping bentgrass, particularly due to its ability to form hybrids. This scenario underscores the urgent need for innovative, effective, and environmentally sustainable herbicides, steering the focus toward natural substances as potential candidates. We report here a promising natural lactone, commonly known as menthalactone, which is derived from Mentha piperita L. Its phytotoxic activity was assessed against …

Swine Solutions: Enhancing Ffa Supervised Agricultural Experience Projects, Hannah M. Daily, Dr. John Michael Mehaffey, Dr. Candis Scallan, Dr. Amy Mehaffey, Dr. Joe Mask

Electronic Theses and Dissertations

Supervised Agricultural Experience (SAE) is a portion of the three-circle model of agriculture education, providing experiential learning opportunities for students. The immersion SAE encourages students to build upon foundational learning components in a real-world application. A popular area of the immersion SAE includes ownership of market swine being raised for exhibition. This study serves as a pilot mentorship program for agricultural science educators and students, creating an educational resource encouraging record-keeping techniques and skill development, leading to eventual independence from the student’s standpoint. The model for the Swine Solutions Program includes utilization of the provided handbook, completion of daily observation …

North Central Extension Risk Management Education Center, Part I: Helps Producers Manage Risks, Christine Lockert, Sheila Aikanathan Johnson, Bradley D. Lubben

Cornhusker Economics

Educating producers to manage risk and position their farm or ranch for future growth and success is the fundamental purpose of the Extension Risk Management Education (ERME) program.

The ERME program, funded by United States Department of Aagriculture’s National Institute of Food and Agriculture, provides training to help producers learn new strategies to manage complex and growing agricultural risks.

Established in 2001 and located at the University of Nebraska-Lincoln Agricultural Economics Department, the North Central Extension Risk Management Education Center (NCERMEC) has a long history of supporting risk management education programs serving producers in the region. NCERMEC, in conjunction …

Understanding Potential Profitability Estimates For Western Kentucky Grain Production, Austin Randolph, Naveen Musunuru

Honors College Theses

Profitability remains a persistent challenge for grain farmers across the United States and globally. Without profitability, the continued operation of any grain farm becomes unsustainable. For grain farmers, profitability is not merely a financial goal but a crucial determinant of their livelihood. However, many grain producers face a significant obstacle: a lack of reliable tools to predict profitability and plan for the next season or make adjustments to existing operations. While budgets can offer a framework and tentative guidelines for farmers to follow, fluctuations in market prices can ultimately undermine these financial plans. The objective of this project is to …

The Effect Of Boom Leveling On Spray Dispersion, Miguel Bustamante, Juan F. Vivanco, Travis A. Burgers

Mechanical Engineering Faculty Publications

Automatic boom height systems reduce the variability of agricultural sprayer boom height. When a boom is not at its target height, this can lead to uneven spray dispersion from the nozzles. Boom heights and sprayer position were previously measured in time for three commercially-available boom leveling systems for three test runs for at least three speeds over each of a mild, medium and rough terrain course. A computational model was created to use measured spray dispersion from a nozzle, measured boom heights in time, and measured sprayer position in time to calculate a spray coverage map. The model was used …

Autonomous Agricultural Equipment Evaluation For Broad-Acre Crop Production, Sofia Bahmutsky, Ashutosh Singh, Travis A. Burgers, Roy Maki

Mechanical Engineering Faculty Publications

No abstract provided.

Designing And Installing A Disability Accessible Teaching Garden, Annabelle D. Denham

Horticulture Undergraduate Honors Theses

As horticulture becomes increasingly popular as a subject, activity, and form of therapy, its inclusivity has not kept up with the pace of its growth. In order to address the need for inclusivity and accessibility, gardens must adopt universal design. Individuals with special needs continuously face discrimination. While horticulture therapy has long been studied and catered to primarily neurotypical and able-bodied individuals, there is limited research on creating gardens specifically to include those with disabilities. This project aimed to create a garden that could serve the needs of all participants, regardless of their ability and sensory needs. The garden was …

International Rice Outlook: International Rice Baseline Projections 2024–2034, A. Durand-Morat, W. Mulimbi

AAES Research Reports and Research Bulletins

• Global rice consumption is projected to exceed global rice production for most of the coming decade, with stocks playing a crucial role in balancing the global market over the projected period.

• The projected growth in production is almost exclusively due to productivity gains.

• The projected global rice consumption is growing, driven mainly by population growth. However, the average global per capita rice consumption is estimated to increase slowly in the coming decade due to a regain in per capita consumption in Asia, the largest rice-consuming region worldwide.

• The international prices of long-grain and medium-grain rice are …

Examining Sustainable And Regenerative Viticultural Practices In The Rheinhessen Wine Region Of Germany, Claire Hoffmann

CISLA Senior Integrative Projects

No abstract provided.

Identification And Environmental Impact Of 35 Different Cut Flower Retail Packages In The U.S.A., Mary Kathryn Gillespie

All Theses

Cut flowers represent 35-billion dollars of global spending with 10-million dollars per day in the U.S.A; each transaction involving packaging. Across the country, cut flower packaging is inconsistently sized, laminated, colored, and unlikely to be recycled. 35 unique cut flower packages were collected across 16 different marketplaces, representing 88% of top grocery retailers. Measuring the materiality of the predominately unlabeled and inconsistent packaging collected required calorimetry equipment, such as Fourier-transform Infrared Spectroscopy, Differential Scanning Calorimeter, and precision gauges. Results unveil five materials representing the cut flower collection: Oriented Polypropylene (OPP), High-Density Polyethylene (HDPE), Paper, Polyethylene Terephthalate (PET), and Nonwoven Polypropylene …

Empowering Diversity: A Comprehensvie Approach To Minority Risk Management Education, Jahqethea Johnson

Applied Science Program: Theses

Federal programs are pivotal to the foundation of the United States agricultural sector. Program payments impact the economic well-being of agricultural producers, yet accessibility, outreach and education disparities remain prevalent among socially disadvantaged producer and agriculturists. From 2020-2024, an average of $21.7 billion dollars in federal agricultural payments have been paid to producers. Although federal funding historically supports commodity crops, livestock producers also depend on a distinct set of federal risk management programs, which are often less visible but pertinent for operational sustainability. There is a growing focus on the need for addressing disparities faced by socially disadvantaged producers and …

The Impact Of Irrigation On Agricultural Land Values In The United States Southeast And An Analysis Of Farmland Prices In South Carolina, Christopher L. Thomas

All Theses

Land is a key component of the agriculture industry in the United States. According to the United States Department of Agriculture, farm real estate (land and buildings) accounted for 82.8% of total US farm sector assets in 2022, consequently making land the largest source of wealth in a farmer’s investment portfolio and the primary source of collateral used for farm operating loans. The Southeastern region of the United States has seen rapid farmland appreciation and intense population growth in recent years. This research investigates the rising farmland prices across the Southeast from both a regional and state-level perspective. Chapter Two …

Evaluating The Effects Of Co₂ And Uv-B On Sporobolus Virginicus (L.) Kunth Growth Under Open Top Chamber: A Comparison Of Silicon Nanoparticle-Treated And Untreated Plants, Suhaila Humaid Ablooshi

Theses

The study focused at how silicon nanoparticles (SiNPs; 50 mg/L) affected the growth, photosynthetic efficiency, and biochemical responses of the salt-tolerant halophyte Sporobolus virginicus in four different environments. They are control, high CO₂, UV-B radiation, and a mix of high CO₂ and UV-B. Plants that were treated with SiNPs showed big changes in their shape, such as more biomass, bigger leaf area, and better root systems in all conditions. The use of combined stress treatments caused a big increase in the levels of chlorophyll a, chlorophyll b, total chlorophyll, and carotenoids. As a result, that the plants were better at …

Initial Impacts Of Different Fertilizers On Improved East Texas Equine Pastures, Carolina De Leon, Brian Oswald, Leland Thompson, Candis Scallan

Electronic Theses and Dissertations

ABSTRACT

In Texas, approximately 1.6 million acres support an equine population exceeding 748,000 horses. This study assessed the effects of organic and inorganic fertilizer treatments on improved Bermudagrass (BG) and other vegetation (OTH) in overgrazed equine pastures at the Stephen F. Austin State University Equine Center. Treatments included equine manure (H), broiler poultry litter (P), and a commercial 13-13-13 fertilizer (C), with application rates based on pasture requirements.

Initial vegetation cover was evaluated using the Daubenmire cover class method in September 2024, followed by a 60-day undisturbed growing period. Final biomass (g/2ft² converted to lbs/ac) and percent cover measurements were …

Fish Cultivation In Fallow Season Rice Fields: Effects On Landscape Methane Emissions, Samuel Carroll

Graduate Theses and Dissertations

Co-cultivation of aquatic animals and rice in the same field is a fairly common practice in various parts of the world, with a number of well-established agro-ecological benefits, such as decreasing the need for chemical pesticides and fertilizers, increasing soil organic matter, and reducing the land area needed for agricultural production. One area of environmental concern in rice production is greenhouse gas emissions. Rice production contributes about 10% of global anthropogenic methane (CH₄) emissions. Currently around 27.5% of Arkansas rice fields are flooded in the winter, which can increase CH₄ emissions in the fallow season by 45% …

Electrochemically Precipitated Struvite Effects On Extractable Soil Nutrients, Owen Collins

Crop, Soil and Environmental Sciences Undergraduate Honors Theses

Struvite recovery from wastewater streams may provide an alternative to traditional fertilizer-phosphorus (P) sources, while also providing the benefit of reducing nitrogen and P loads in wastewater effluent and reducing effects of eutrophication in surface waters. Limited research has been conducted to assess the effects of struvite fertilization on concentrations of soil micronutrients and potassium (K) compared to other traditional fertilizer-P sources in historically agricultural soils. The objective of this study was to assess the effects of fertilizer-P source (i.e., synthetically produced electrochemically precipitated struvite [ECST], chemically precipitated struvite [CPST], monoammonium phosphate [MAP], diammonium phosphate [DAP], triple superphosphate [TSP], rock …

Grains, Seeds & Hay Industry Funding Scheme: 2023-24 Annual Report, Department Of Primary Industries And Regional Development, Western Australia

Biosecurity published reports

The Grains IFS collects funds from producers to address biosecurity pest and disease threats relevant to and determined by the WA grains/seed/hay industry. The current IFS contribution rate of 0.25 cents per tonne of grain and seed, and 0.125 cents per tonne of hay, is applied to the first sale of produce grown in the agricultural areas of WA in 2023-24. Grains IFS contributions fund the:

1. Skeleton Weed Control Program (SKW).

2. Three Horned Bedstraw Eradication Program.

3. Research and Development (R&D) – Research grants and programs to improve the effectiveness and/ or efficiency of the IFS-funded programs, as …

Livestock Risk Protection Basis Risk For Feeder Cattle, Bryce Anderson

Graduate Theses and Dissertations

Recent government subsidies make livestock risk protection (LRP) insurance an affordable price risk management tool for many U.S. cattle producers. LRP insurance triggers a loss when the Chicago Mercantile Exchange (CME) Feeder Cattle Index falls below the selected coverage price. The CME Feeder Cattle Index is a 7-day weighted average of feeder cattle prices in 12 states. This paper determines if LRP policy holders who produce feeder cattle in states whose feeder cattle prices are not included in the CME Feeder Cattle Index are exposed to excess basis risk. To do this, we use a hedonic regression model to determine …

Nebline, May 2025

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

NEBLINE, May 2025

Tips on Staying Cool During the Heat of a Temper Tantrum

What’s Your BBQ IQ?

May Recipe of the Month — Air Fryer Teriyaki Beef Kabobs

Insect and Disease Control for Organic Vegetable Gardeners

May Garden Guide

Cash Rent Survey

No Matter Where You Live, Submit a Request Before You Dig!

Battling Scales in the Landscape

Three Lancaster County 4-H’ers Modeled Their Sewn Garments at Omaha Fashion Week

Ignite by 4-H 2025 National Conference

May Heart of 4-H Volunteer Award — Dayle Williamson

2024 National Index Study of 4-H Youth

Clover College, June 10–13; Registration Opens in …

Mitigating Nitrogen Losses: The Role Of Enhanced Efficiency Fertilizers In Sustainable Corn Production, Dipesh Giri

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

Nitrogen (N) is essential for crop production, but its inefficient use often leads to environmental losses through nitrate leaching, ammonia volatilization, and nitrous oxide (N₂O) emissions. Enhanced efficiency fertilizers (EEFs), such as nitrification inhibitors (NIs) and urease inhibitors (UIs), have been developed to minimize these losses and improve nitrogen use efficiency (NUE). This research combined a multi-year field experiment and a controlled laboratory study to evaluate how dual-inhibitor fertilizers compare to conventional urea and single-inhibitor formulations in Nebraska cropping systems. The main objective was to understand how nitrogen inhibitors influence N availability, crop performance, and nitrogen losses across different environmental …