Agriculture Commons^™

Being Social While Social Distancing, Margaret Machara, Beatrice Harris, Rita Fleming, Kane Reeves, Margaret Machara

Extension Publications

No abstract provided.

Traveling, Beatrice Harris, Rita Fleming, Kane Reeves, Margaret Machara, Katie Conrad, Lynn Brookins

Extension Publications

No abstract provided.

Influenza H3n2v: Key Facts For People Exhibiting Pigs At Fairs, Tennessee State University

Extension Publications

No abstract provided.

Factors Influencing Increased Usage Of Cash Rent Leases In Illinois, Jacob Styan, Maria A. Boerngen, Michael J. Barrowclough

Faculty Publications - Agriculture

In recent years, cash rent leases have become increasingly popular among farm landowners in Illinois. Since 1995, acres operated under cash rent leases have increased 44%, 105%, and 117% in northern, southern, and central Illinois, respectively, for farms enrolled in the Illinois Farm Business Farm Management (FBFM) Association. Using data collected from the United States Department of Agriculture (USDA) National Agricultural Statistics Service (NASS), Illinois FBFM Association, University of Illinois farmdoc, and Environmental Working Group (EWG), we examined the impact of multiple factors on farmland leasing choices. Results indicate that commodity prices, soybean revenue, government crop insurance expenditures, and commodity …

Course-Related Student Anxiety During Covid-19: A Problem And Some Solutions, Roger Brown, Steve Buck, Michelle Kibler, Jerrod Penn, Na Zuo

Faculty Publications - Agriculture

We examine the prevalence and sources of student anxiety during the rise of the COVID-19 pandemic (March 23 to May 10, 2020) and the implications for online course design and delivery. Using a standard screening tool (GAD-7) with supplemental open-response questions, we show that students had relatively high levels of anxiety based on a convenience sample of 266 undergraduate students enrolled at four U.S. institutions. In this sample, we find that 58 percent of students had clinically significant levels of anxiety in one or more weeks of the seven-week study period. Thirty-six percent of students sustained this level of anxiety …

Effectiveness Of Hybrid Micro-Learning For Financial Education Of Filipino Women Migrants In Italy, Manuela Prandini, Pier Paolo Ficarelli

Journal of Public Affairs and Development

Faced with the dramatic changes effected by the COVID-19 pandemic, adult education has to capitalize on new learning and teaching paradigms. In recent years, technology-based micro-learning has grown into an established educational approach. Its focus is on short, well-defined units with the use of interactive multimedia available on digital channels. The flexibility of self-regulated learning through bite-sized tasks combined with synchronous virtual sessions for sharing and discussion can be a game-changer for non-formal adult education, capable of overcoming participants’ reduced time availability and the complications of face-to-face exchanges at the present time. Using a mixed-method approach, this action research study …

Valorization Of Xylan In Agroforestry Waste Streams, Harrison Appiah

Graduate Theses, Dissertations, and Problem Reports (ETD)

Valorization of Xylan in Agroforestry Waste Streams.

Harrison Appiah

Microwave-assisted deep eutectic solvent and gamma-valerolactone metallic chloride catalyzed conversion of xylan to furfural were investigated using a 2x3 factorial experimental design at two levels of percent microwave power, reaction time, and catalyst concentration. The levels of each factor studied were (20%, 60% microwave power, 2, 4 minutes, and 10, 20mg) respectively. The effect of three metallic chloride catalysts (LiCl, FeCl3.6H20, CuCl2) on the conversion of xylan to furfural was also investigated. The gamma-valerolactone-ferric chloride sent system exhibited the highest mean yield of furfural (56.50%). The next highest furfural yield of …

Examining West Virginia's Economic Development: Natural Resources, Development Agencies, And Labor Force Development, Gaillynn Marie Bowman

Graduate Theses, Dissertations, and Problem Reports (ETD)

Examining West Virginia's Economic Development: Natural Resources, Development Agencies, and Labor Force Development Gaillynn Bowman Economic development is well-recognized as being fundamental to facilitating an overall improved quality of life for communities and their residents. Throughout West Virginia’s history, the state has experienced economic hardships caused by boom and bust cycles associated with resource extraction. This dissertation consists of three essays that explore the impacts of economic development activities, including conservation programs, economic development agency initiatives, and workforce development agencies. The first essay explores the relationship nonresident landowners have with the conservation programs within West Virginia, specifically the Natural Resources …

Shoot Organogenesis And Plant Regeneration In Begonia Coptidifolia, Beiyi Guo, Yuping Xiong, Hai Ren, Teng Wu, Jaime A. Teixeira Da Silva, Songjun Zeng, Guohua Ma

Turkish Journal of Agriculture and Forestry

An efficient regeneration protocol was established for a rare plant species, Begonia coptidifolia. Using leaf explants, adventitious shoots were induced on Murashige and Skoog (MS) basal medium using various concentrations (1.0-10.0 mM) of three cytokinins, 6-benzyladenine (BA), thidiazuron (TDZ) and kinetin (KIN). However, adventitious shoots could not be induced on MS medium supplemented with auxins [α-naphthaleneacetic acid (NAA) or 2,4-dichlorophenoxyacetic acid (2,4-D)] tested in the 1.0-10.0 mM range. The highest number of shoots per explant (31.2) was induced on MS medium with 5.0 mM BA and 1.0 mM NAA. Although roots were induced in ½MS medium free of plant growth …

Multivariate Analysis Of Mutant Wheat (Triticum Aestivum L.) Lines Under Drought Stress, Sadaf Zahra, Tayyaba Shaheen, Momina Hussain, Sana Zulfiqar, Mehboob-Ur Rahman

Turkish Journal of Agriculture and Forestry

Drought is a major threat to wheat production worldwide and development of drought-tolerant wheat genotypes may improve the production of this cereal crop in drought affected regions. In the present study, 24 mutant lines were developed by treating a wheat variety 'NN-Gandum-1(NN-1) with ethyl methane sulfonate (EMS). The M5, M6, and M7 generations were evaluated for quantitative traits under well irrigated and rainfed conditions. Furthermore, best performing mutants of M6 and M7 generations were examined for biochemical parameters. A substantial correlation was found among the quantitative traits (plant height, spike length, tillers per plant, number of spikelets per spike and …

Wa Insecticide Guide 2021 - Autumn Winter, Amber Balfour-Cunningham, Dusty Severtson

PestFacts WA

Registered chemicals for crops during autumn and winter 2021 in Western Australia

Wa Insecticide Guide 2021 - Winter Spring, Svetlana Micic, Alan Lord

PestFacts WA

Registered chemicals for crops during winter and spring 2021.

The pesticides listed in the tables below can be used on any crop appearing on the chemical label, as long as the rate used does not exceed the highest rate that is registered for use on that crop.

There are many products with different trade names that contain the same active ingredient. This list is not exhaustive and does not imply any specific recommendations of brand names.

Unless otherwise specified all insecticides listed are emulsifiable concentrate (EC). Insecticides with SC are suspension concentrate, WP is wettable powder, CS is capsule suspension, …

Planting Depth And Within-Field Soil Variability Impacts On Corn Stand Establishment And Yield, Stirling Stewart, Newell Kitchen, Matt Yost, Lance Stephen Conway, Paul Carter

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Seedbed conditions during corn (Zea mays L.) planting can have substantial impact on corn stand establishment and final yield. Planting management decisions are complex due to spatial variability caused by changing soil characteristics such as soil texture or landscape position. Field experiments conducted in central Missouri from 2017 to 2019 assessed the effects of varying corn planting depths on stand establishment and yield. Sites included fine- and coarse-textured alluvial soils, and summit, back, and foot slope positions of Alfisol claypan soil landscapes. On alluvial soil, deep planting (7.6 cm) often had the most uniform and timely emergence. Shallow planting (3.8 …

South Dakota Farmers’ Views On Environment & Community, Tong Wang, Jim Ristau

South Dakota Farm Survey

Researchers at South Dakota State University (SDSU) conducted producer surveys in the eastern part of South Dakota in both 2018 and 2021. Producers could take the survey online or via mail and were asked questions about their farm, farming practices including usage of soil and water conservation practices, and their values.

Southeast South Dakota Experiment Farm Annual Progress Report, 2021, Southeast South Dakota Research Farm

Agricultural Experiment Station and Research Farm Annual Reports

This is an annual report of the research program at the Southeast South Dakota Research Farm in cooperation with South Dakota Agricultural Experiment Station and the SDSU College of Agriculture, Food, and Environmental Sciences and has special significance for those engaged in agriculture and the agriculturally related businesses in the ten county area of Southeast South Dakota. The results shown are not necessarily complete or conclusive. Interpretations given are tentative because additional data resulting from continuation of these experiments may result in conclusions different from those based on any one year.

Baseline Sensitivity To Demethylation Inhibitors Fungicides In Cercospora Spp. And Corynespora Spp. In Arkansas Soybeans, Evan Buckner, Alejandro Rojas

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Cercospora spp. and Corynespora spp. are two common foliar fungal pathogens in Arkansas and other soybean-producing areas. Two primary diseases caused by Cercospora spp. are Cercospora Leaf Blight (CLB, caused mainly by C. kikuchii) and Frogeye Leaf Spot (C. sojina). Over time, many fungicides used to combat these diseases have become ineffective as the pathogens have developed a resistance to them. The class of the fungicide in question is Triazoles [Demethylation Inhibitors (DMI)–FRAC 3]. Fifteen isolates consisting of Corynespora cassiicola, Cercospora sojina, and Cercospora flagellaris were tested to determine baseline sensitivities using serial dilutions (0, 0.01, 1, 10, 50 mg/L) …

Productivity And Efficiency Difference Among Kentucky Grain Farms, Ahmed Yahya Hussein

Theses and Dissertations--Agricultural Economics

This paper attempts to estimate productivity and efficiency for Kentucky grain farms by applying a two-stage Date Envelopment Analysis (DEA) and DEA-based Malmquist method. The study covers the years 1999-2015. Also, productivity and efficiency testing hypotheses among different farm sizes and years are estimated. In the first step, productivity and efficiency indices are estimated through deterministic DEA. In the second stage, a panel regression is run with exogenous variables to explain the productivity and efficiency variation. In general small farms were found to be the least scale efficient compared to mid-sized and large farms, even though the results show overall …

Seed-Shattering Phenology At Soybean Harvest Of Economically Important Weeds In Multiple Regions Of The United States. Part 2: Grass Species, Lauren M. Schwartz-Lazaro, Lovreet S. Shergill, Jeffrey A. Evans, Muthukumar V. Bagavathiannan, Shawn C. Beam, Mandy D. Bish, Jason A. Bond, Kevin W. Bradley, William S. Curran, Adam S. Davis, Wesley J. Everman, Michael L. Flessner, Steven C. Haring, Nicholas R. Jordan, Nicholas E. Korres, John L. Lindquist, Jason K. Norsworthy, Tameka L. Sanders, Larry E. Steckel, Mark J. Vangessel, Blake Young, Steven B. Mirsky

Department of Agronomy and Horticulture: Faculty Publications

Seed shatter is an important weediness trait on which the efficacy of harvest weed seed control (HWSC) depends. The level of seed shatter in a species is likely influenced by agroecological and environmental factors. In 2016 and 2017, we assessed seed shatter of eight economically important grass weed species in soybean [Glycine max (L.) Merr.] from crop physiological maturity to 4 wk after maturity at multiple sites spread across 11 states in the southern, northern, and mid-Atlantic United States. From soybean maturity to 4 wk after maturity, cumulative percent seed shatter was lowest in the southern U.S. regions and increased …

Coal Char Effects On Soil Chemical Properties And Maize Yields In Semi-Arid Region, Dinesh Panday, Maysoon M. Mikha, Xiaocun Sun, Bijesh Maharjan

Department of Agronomy and Horticulture: Faculty Publications

Soil amendments with high carbon (C) content can be effective in semi-arid regions where soils are characterized by low C. A field study was conducted in 2016–2018 to evaluate the effect of char on soil chemical properties and irrigated maize (Zea mays L.) yields in sandy loam fertilized with urea or composted manure. Carbon-rich char used was a product of coal combustion residue from a local factory in western Nebraska. The experiment was arranged in a split-plot randomized complete block design in four replications with char (0, 6.7, 13.4, 20.1, and 26.8Mg C ha⁻¹) as main and …

Management And Dietary Strategies To Mitigate Environmental Stressors In Northern Plains Cattle Feeding Systems, Warren Carl Rusche

Electronic Theses and Dissertations

Three studies were undertaken to examine strategies to mitigate environmental stress faced by Northern Plains cattle feeders. In the first study, 46 feedlot managers from SD (n = 21), MN (n = 6), and NE (n = 19) were surveyed on use and perceptions of heat stress (HS) mitigation strategies. All respondents avoided cattle handling during heat stress events and incorporated some method of HS mitigation. Buildings or shades were perceived as the most successful strategy (60.9%) and were most commonly named as strategies managers would like to employ (63% for shades and 17.4% for buildings). Increasing dietary corn silage …

Assessing Dairy Farm Employees Health, Leyby Stephany Guifarro Rodriguez

Electronic Theses and Dissertations

This Master thesis evaluates the impact of general health care and eating habits (Study 1), vision care (Study 2), and mental health status (Study 3) on Latino dairy farmworkers lifestyle and work performance in South Dakota. We hypothesized that the health status of dairy workers has a negative impact on the workers’ job performance. In study 1, data from a total of 70 participants were collected, using a face-to-face survey in Spanish, which allowed us to assess various topics and details related to employees’ daily routine tasks, eating habits, and general health status. Furthermore, recommendations to improve general health care …

Implications Of Broadleaf, Grass, And A Blend Of Broadleaf And Grass Cover Crops On Soil Health And Corn Production In South Dakota, Hunter Bielenberg

Electronic Theses and Dissertations

Cover crops have recently gained attention in the U.S. Midwest because of their potential to increase soil organic matter and protect overall soil health. This study was conducted to determine the effects of different cover crop mixtures on soil health measurements and corn grain yield at increasing nitrogen (N) rates. Cover crops were planted in the fall after small grains harvest as a dominantly grass mixture, dominantly broadleaf mixture, or a 50/50 grass and broadleaf mixture with a no cover crop control. Soil and cover crop biomass samples were collected in the fall before winter cold termination and in the …

Soil Organic Carbon, Hydro-Physical Properties, Pore Structure And Greenhouse Gas Fluxes Under Integrated Crop-Livestock System, Jashanjeet Kaur Dhaliwal

Electronic Theses and Dissertations

Integrated crop-livestock system (ICLS) can improve soil organic carbon (SOC), enhance soil hydro-physical properties, and mitigate greenhouse gas (GHG) emissions. The objectives of this study were to: (i) investigate the influence of grazing, cover crop (CC), and a combination of grazing and CC on labile soil carbon (C) and nitrogen (N) fractions and soil enzyme activity, (ii) assess the impacts of short-term (3-4 years) and long-term (>30 years) ICLS on SOC, bulk density, structural quality and water infiltration, (iii) evaluate soil pore structural properties such as porosity, number of pores, pore size, pore shape, fractal dimension, anisotropy and tortuosity …

Interrogating The Socio-Ethical Dilemmas Of Precision Agriculture Technologies, Ayorinde Ogunyiola

Electronic Theses and Dissertations

Farming has moved into a digital age where data and information are available to farmers to make informed agronomic and financial on-farm decisions. The development of precision agriculture (PA), such as big data technologies and machine learning algorithms is transforming the agricultural food production system in diverse ways, economically, environmentally, and socially. Despite benefits afforded by PA to agricultural productivity and environmental sustainability, these technologies can raise unintended societal challenges that can also limit their adoption among farmers. PA is changing how farming is done, reconstructing farmers’ social identities, and influencing relationships between farmers, agronomists, and technology developers. This dissertation …

Exploring The Determinants Of Aspects Of Rotational Grazing In The U.S. Great Plains, Iftekhar Uddin Ahmed Chowdhury

Electronic Theses and Dissertations

Pasture and rangeland make up about 45 percent of the agricultural land in the U.S. Great Plains and one of the most common form of mismanagement of this pasture is overgrazing. Which results in many detrimental effects on environment. Many practitioners endorsed Rotational grazing (RG) as an improved grazing management practice over season-long continuous grazing. The overall goal of the current study is to assess the certain aspects of using RG in the U.S. Great Plains. Using mail survey data of the of 874 beef cattle producers of North Dakota, South Dakota, and Texas, the study found that neighborhood practice, …

Genome-Wide Association Analysis Permits Characterization Of Stagonospora Nodorum Blotch (Snb) Resistance In Hard Winter Wheat, Rami Altameemi

Electronic Theses and Dissertations

Stagonospora nodorum blotch (SNB) is an economically important wheat disease caused by the necrotrophic fungus Parastagonospora nodorum. SNB resistance in wheat is controlled by several quantitative trait loci (QTLs). Thus, the identifying of novel resistance/susceptibility QTLs is crucial for continuous improvement of the SNB resistance. Here, the hard winter wheat association mapping panel (HWWAMP) comprising accessions from breeding programs in the Great Plains region of the US, was evaluated for SNB resistance and necrotrophic effectors (NEs) sensitivity at the seedling stage. A genome-wide association study (GWAS) was performed to identify singlenucleotide polymorphism (SNP) markers associated with SNB resistance and …

Letter From The Dean, Deacue Fields

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

Estimating Food Waste Due To Food Safety Recalls And Investigating Ways To Minimize Negative Impacts, Mykayla Latronica

Master's Theses

For years the issue of food waste has been recognized and quantified; however, food safety issues often go unrecognized as a source of food waste. One objective of this research is to estimate quantities and monetary value of fruits and vegetables implicated in food safety recalls, and thus wasted. Using publicly available data we identified all recalls involving vegetable or fruit commodities contaminated with Listeria monocytogenes, pathogenic E. coli, or Salmonella during 2015-2018. When quantities were provided, monetary value of recalled product was calculated using USDA ERS 2016 average retail prices. Although data limitations only allowed analysis of …

Exposure Assessment Of Emerging Contaminants: Rapid Screening And Modeling Of Plant Uptake, Majid Bagheri

Doctoral Dissertations

"With the advent of new chemicals and their increasing uses in every aspect of our life, considerable number of emerging contaminants are introduced to environment yearly. Emerging contaminants in forms of pharmaceuticals, detergents, biosolids, and reclaimed wastewater can cross plant roots and translocate to various parts of the plants. Long-term human exposure to emerging contaminants through food consumption is assumed to be a pathway of interest. Thus, uptake and translocation of emerging contaminants in plants are important for the assessment of health risks associated with human exposure to emerging contaminants. To have a better understanding over fate of emerging contaminants …

Evaluation Of Powdery Mildew Resistance Of A Diverse Set Of Grape Cultivars And Testing The Association Between Powdery Mildew Resistance And Pr Gene Expression, Si̇nem Demi̇rel Aşci, Serpi̇l Tangolar, Kemal Kazan, Canan Yüksel Özmen, Mert Öktem, Umut Ki̇bar, Muhammad Mujtaba, Semi̇h Tangolar, Ali̇ Ergül

Turkish Journal of Agriculture and Forestry

Powdery mildew caused by the fungal pathogen Erysiphe necator is a global disease that reduces yield and quality in grapes (Vitis vinifera L.). Most grape cultivars are susceptible to this pathogen and thus the selection of powdery mildew resistant cultivars is a major objective of grape breeding programs. In this study, we evaluated powdery mildew resistance of a diverse set of 28 commonly cultivated local and international V. Vinifera cultivars after artificial inoculations with Erysiphe necator. Of these, 7 cultivars were found to be resistant while 10 and 11, were found to be moderately resistant and susceptible to powdery mildew, …