Agriculture Commons^™

Exploring The Implementation Of Dike Building And The National Endowment For The Oceans Act To Support Coastal Restoration In Louisiana, Taylor Perrodin

Honors Capstones

No abstract provided.

Rural Students On College Enrollment: Perceptions Of Influence Surrounding College Choice, Lucas M. Simmons

Graduate Theses and Dissertations

The purpose for conducting the study was to describe the community, personal experiences, and life events of individuals from rural Arkansas communities in developing their decisions to attend college and how the community impacted their successful enrollment at the University of Arkansas. Specifically, the study set out to explore how rural communities were perceived to influence college enrollment decisions and choices in degree selection. Although situated at one case study institution, the University of Arkansas, the findings have importance for all rural students and communities, and ultimately public policy and institutional behaviors. Therefore, the purpose for conducting the study was …

Mechanisms For Funding Biosecurity And Declared Pest Management In Western Australia - Report By The Biosecurity Council Of Western Australia, Biosecurity Council Of Western Australia

Biosecurity published reports

There are five legislated funding mechanisms used for biosecurity-related purposes in wa declared pest rates, Industry Funding Schemes (IFSs), fees for service through the Agricultural Produce Commission (APC), specified area rates and the Modified Penalties Revenue Account. Of these, three were assessed as sustainable sources of biosecurity funding:

• Declared pest rates (DPRs) - rates chargeable on land in a prescribed area. The funds collected via this mechanism are matched dollar-for-dollar from the State's Consolidated Account and used for activities to control declared pests, including biosecurity threats.
• IFSs - schemes that enable agricultural industries to collect funds from producers. The funds …

Winter Cover Crop Impacts On Weed Dynamics In Eastern And Central Nebraska, Elizabeth Ann Oys

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

Reducing tillage in cropping systems causes weed management to be dependent on chemical and cultural methods for weed control. Over time, herbicide-resistant weeds have developed due to the continuous selection pressures from herbicides, particularly in the Midwest Corn Belt. Integrated weed management strategies, such as cover crops, can be used to mitigate some of these issues. Cover crops are primarily known for their soil health benefits, but there is evidence that cover crops can suppress weeds. However, less research has been done at the field-scale level to address cover crop impacts on the weed seedbank and aboveground weeds during the …

Dicamba Tank Mixtures And Formulations And Their Effects On Sensitive Crops During Cleanout Procedures, Vinicius Velho

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

The introduction of dicamba-tolerant (DT) soybeans (Glycine max L. Merr) and cotton (Gossypium hirsutum L) in 2017 provided an additional tool for herbicide resistant weeds management. In the subsequent years, off-target movement of dicamba allegedly caused damage to sensitive crops and vegetation.

Possible causes of off-target movement include tank contamination, physical drift, and volatility. Additional products, such as herbicides to control grass, are often added to tank with dicamba, which is used to control broadleaf weeds, to increase the spectrum of control and application efficiency. Dicamba products registered for DT crops require the use of drift reducing …

Regional Plant Community Differences In The Nebraska Sandhills, Travis Millikan

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

The Nebraska Sandhills is very valuable to the state of Nebraska, representing one of the most in-tact and largest grassland ecosystems in temperate regions in the world. Rangeland managers must understand plant community dynamics across the Sandhills to better inform management decisions. The first objective of this study was to evaluate plant community variability on upland Sands ecological sites across different precipitation zones in the Nebraska Sandhills. The second objective of our study was to utilize the Rangeland Analysis Platform (RAP) to examine spatial and temporal variability in biomass production and cover on pastures of ranches analyzed in the first …

A Mixed Methods Approach To Context Specific Curriculum Design For Very Small And Small Strawberry Growers In The Southeastern United States, Thomas A. Yeargin

Graduate Theses and Dissertations

Outbreaks of foodborne illness due to fresh produce are a continued threat to both the publichealth and the economy in the United States. Though there are many factors which influence the perpetuation of foodborne pathogens, the inability of the food industry to curtail this issue indicates systemic failure of interventions aimed at improving food safety practices. In this dissertation, we detail the efforts made over the past few decades to provide training to food producers and food handlers as well as recommendations that have been made for improvement based on these studies. By borrowing from more advanced fields of study …

Land Rich, Cash Poor: Hispanic Subsistence Agri-Culture On Acequia Farms Of Northern New Mexico, 1880-1950s, José A. Rivera Ph.D.

Faculty Publications

Acequia-based agriculture in Hispanic northern New Mexico originated with the arrival of settlers from the central valley of Mexico in the late sixteenth century and later following the Camino Real into the upper Río Grande and its tributaries. The high desert environment required irrigation for food production and survival. Land parcels in the rural villages of northern New Mexico were small, and crop yields were limited to home consumption on a subsistence basis, an economy that lasted well into the territorial period and statehood of New Mexico. Despite a wage economy introduced with the arrival of the railroad around 1880 …

Mapping Salt-Affected Land In The South-West Of Western Australia Using Satellite Remote Sensing, P A. Caccetta, John A. Simons, S Furby, Nicholas J. Wright, Richard J. George Dr

Natural resources published reports

Dryland salinity is a pervasive form of land degradation that has resulted from the clearing of about 17 M ha of native vegetation and the introduction of predominately cereal and pasture-based farming systems in the South-West of Western Australia. The change in water balance caused by clearing deep rooted endemic woodlands increased recharge and resulted in rising groundwater levels. After a lag period, the regolith began filling and groundwater approached the soil surface, evaporating and depositing stored salts in the rootzone of salt sensitive crops. Groundwater levels also rise and affect areas of remnant native vegetation, streams, wet-lands and rural …

Agricultural Intensification Can Help Protect The Amazon Forest And Reduce Global Warming / Protecting The Amazon Forest And Reducing Global Warming Via Agricultural Intensification, Fabio R. Marin, Alencar J. Zanon, Juan P. Monzon, José F. Andrade, Evandro H.F.M. Silva, Gean L. Richter, Luis A.S. Antolin, Bruna S.M.R. Ribeiro, Giovanna G. Ribas, Rafael Battisti, Alexandre B. Heinemann, Patricio Grassini

Department of Agronomy and Horticulture: Faculty Publications

The Amazon basin includes 550 M ha covered with rainforests, with 60% of this area being in Brazil. Conversion of rainforest for soybean production raises concerns about the degree to which Brazil can reconcile production and environmental goals. Here we investigated the degree to which intensification could help Brazil produce more soybean without further encroachment of the Amazon Forest. Our analysis shows that continuation of current trends in soybean yield and area would lead to conversion of additional 5.7 M ha of forests and savannas during the next 15 years, with an associated 2550 Mt of CO2eq released into the …

Climate Change And Management Impacts On Soybean N Fixation, Soil N Mineralization, N2O Emissions, And Seed Yield, Elvis F. Elli, Ignacio A. Ciampitti, Michael J. Castellano, Larry C. Purcell, Seth Naeve, Patricio Grassini, Nicolas C. La Menza, Luiz Moro Rosso, André F. De Borja Reis, Péter Kovács, Sotirios V. Archontoulis

Department of Agronomy and Horticulture: Faculty Publications

Limited knowledge about how nitrogen (N) dynamics are affected by climate change, weather variability, and crop management is a major barrier to improving the productivity and environmental performance of soybean-based cropping systems. To fill this knowledge gap, we created a systems understanding of agroecosystem N dynamics and quantified the impact of controllable (management) and uncontrollable (weather, climate) factors on N fluxes and soybean yields. We performed a simulation experiment across 10 soybean production environments in the United States using the Agricultural Production Systems sIMulator (APSIM) model and future climate projections from five global circulation models. Climate change (2020–2080) increased N …

Making Better Farm Management Decisions, Matthew Stockton

Cornhusker Economics

Traditionally, producer education efforts around farm management are directed at understanding the academic topics of business operations and management including, accounting, law, human resources, marketing, production, risk, finance, etc. The information, techniques and tools taught are often concrete and focus on measurement, analysis, and data. For instance, a traditional grain marketing education program would generally include topics in forward contracts, options, futures, hedge to arrive, basis contracts, storage, and seasonality. While these programs can be quite powerful in developing quantitative skills and knowledge, they neglect a key element needed by all farm managers to make objectively clear decisions. This key …

Transforming The “Great Resignation” Into The “Great Attraction”, Cheryl A. Burkhart-Kriesel

Cornhusker Economics

Businesses of all types are scrambling to hire people, especially those that work on the frontline with customers - from healthcare to hospitality to retail and everything in between. This is resulting in an incredibly tight labor market across the nation. Some are calling this time “The Great Resignation” which refers to the more than 19 million workers - and counting - that have quit their jobs since April 2021. Logic would say that if people are resigning in record numbers that there should be a lot of employees out there to hire, but that is not the case. It …

Shew Family Farms Shares Their Story In Honor Of Athen's Farmers Market 50th Anniversary, Marjorie Shew, Kassidy Rock

Spring 2022 Oral Histories: Athens Farmers Market and The Ridges

Member of the Athens Farmers Market since1984, Marjie Shew of Shew Family Farms, now known as Shew's Grassfed Beef, shares her story. From beginning in upstate New York to living on a commune in West Virginia, to owning an orchard with her husband in Morgan County, Ohio and every step in between.

Examination Of Pre-Emergence Control Of Johnsongrass In Sugarcane Seedlings, Carleton Baucum

LSU Master's Theses

Sugarcane is susceptible to many diseases and insect pests; therefore, to maintain high sugar yield new varieties must be developed. Producing new varieties contributes to the overall crop success through enhanced yield, insect and/or disease resistance, cold tolerance, and ratooning ability. However, unlike conventional sugarcane, which is vegetatively propagated, new sugarcane varieties are produced from true seed. These seedlings are more susceptible to herbicidal injury and weed competition than conventional sugarcane. For sugarcane seedlings to succeed, weeds must be controlled therefore, the most effective herbicide program with regards to seedling safety must be implemented. The objectives of this research were …

Two Fingerprinting Sets For Humulus Lupulus Based On Kasp And Microsatellite Markers, Mandie Driskill, Katie Pardee, Kim E. Hummer, Jason D. Zurni, Keenan L. Amundsen, Annette Wiles, Claudia Wiedowi, Josef Patza, John A. Henningi, Nahla V. Bassili

Department of Agronomy and Horticulture: Faculty Publications

Verification of clonal identity of hop (Humulus lupulus L.) cultivars within breeding programs and germplasm collections is vital to conserving genetic resources. Accurate and economic DNA-based tools are needed in dioecious hop to confirm identity and parentage, neither of which can be reliably determined from morphological observations. In this study, we developed two fingerprinting sets for hop: a 9-SSR fingerprinting set containing high-core repeats that can be run in a single PCR reaction and a kompetitive allele specific PCR (KASP) assay of 25 single nucleotide polymorphisms (SNPs). The SSR set contains a sex-linked primer pair, HI-AGA7, that was used …

Re-Evaluation Of Late Season Action Thresholds And The Effect Of Seed Treatments On Early Season Colonization Of Threecornered Alfalfa Hopper, Spissistilus Festinus (Say), In Louisiana Soybean, Glycine Max (L) Merr, Tyler Ray Tagle Musgrove

LSU Master's Theses

Soybean, Glycine max (L.) Merr, is considered the most economically important oil and feed crop in the US and is grown on nearly 35,000,000 ha on an annual basis. Factors that limit yield include weed pressure, disease infection, and of particular interest to entomologists, insect herbivory. Soybean is targeted by a range of above and below ground pests which are primarily controlled by insecticides. Neonicotinoids are a recently popularized insecticide class that when applied as a seed treatment, can provide protection from early season pests. The most economically significant early season pest is threecornered alfalfa hopper, Spissistilus festinus (Say), whose …

Valuation Of Dry And Wet Aged Beef By U.S. Consumers, Mario Ortez, Nicole Olynk Widmar, Nathan M. Thompson, Yuan H. Brad Kim

Department of Agricultural Economics Faculty Publications

Aged-beef has historically been available in high-end establishments, but investigation into consumer preferences for aging is increasingly important as it has become more readily available. Consumer perceptions of and willingness-to-pay (WTP) for aged-beef under two methods dry-aging and wet-aging, were studied in a representative sample of n = 1,275 US residents alongside USDA quality grades. In general, US residents are not knowledgeable regarding aged-beef but have a positive direct-stated perception of the practice. Respondents self-reported familiarity with USDA grades Prime and Choice and perceived them as superior beef attributes. Half of respondents were randomly assigned to receive a low information …

Something Fishy In Seafood Trade?, Kathy Baylis, Lia Nogueira, Linlin Fan, Kathryn Pace

Cornhusker Economics

The safety of food imports continues to be in the spotlight. Globally, each year, contaminated food causes almost 1 in 10 people to fall ill and 420 thousand people to die (WHO, 2017). Protecting consumers from unsafe foods is complicated by the increased role of international trade in our food system. The U.S. Centers for Disease Control and Prevention found that disease outbreaks associated with imported food increased from 1996 to 2014, with fish and produce being the main culprits (Gould et al., 2017). For example, in 2019, two separate cases of tuna from Vietnam were found to have sickened …

A Comparative Assessment Of Soil Characteristics Between Forests And Urban Lawns, Remigio Casanova, Stephanie Huerta, Lukia Kalugin, Garrison Layne, Valerie Pacheco

Undergraduate Research Conference

Objectives

• Examine the differences in soil characteristics between a recreational lawn and a forest

• Make comparisons between a forest and lawn sampling area from a visual standpoint to observe a difference in what vegetation the soil supports.

• Collect data through on on-site and in in-laboratory methods.

• Interpret the results by examining the collected data and looking for patterns.