Agriculture Commons^™

Prosopis Glandulosa Persistence Is Facilitated By Differential Protection Of Buds During Low- And High-Energy Fires, Heath D. Starns, Carissa L. Wonkka, Matthew B. Dickinson, Alexandra G. Lodge, Morgan L. Treadwell, Kathleen L. Kavanagh, Douglas R. Tolleson, Dirac L. Twidwell Jr, William E. Rogers

Department of Agronomy and Horticulture: Faculty Publications

Rangelands worldwide have experienced significant shifts from grass-dominated to woody-plant dominated states over the past century. In North America, these shifts are largely driven by overgrazing and landscape-scale fire suppression. Such shifts reduce productivity for livestock, can have broad-scale impacts to biodiversity, and are often difficult to reverse. Restoring grass dominance often involves restoring fire as an ecological process. However, many resprouting woody plants persist following disturbance, including fire, by resprouting from protected buds, rendering fire ineffective for reducing resprouting woody plant density. Recent research has shown that extreme fire (high-energy fires during periods of water stress) may reduce resprouting …

Incentivizing Wellness Through Community Supported Agriculture: Reflections On Shareholder Impacts Of An Employer-Based Csa Voucher Program, Jairus J. Rossi, Timothy A. Woods

Agricultural Economics Faculty Publications

Community supported agriculture (CSA) programs are emerging as popular consumer options for pro­duce acquisition. While many researchers have dis­cussed the impacts of CSA on economies, commu­nities, and the environment, others are interested in documenting how produce-based CSA shapes health. In this paper, we evaluate whether and to what extent CSA incentive programs, funded by diverse employer groups in central Kentucky 2015–2018, impact shareholder wellness. To evaluate impact, we use two distinct types of data: we com­pare shareholders’ perceived frequency of food lifestyle behaviors from pre- and post-season sur­veys, and we examine anonymized medical claims from a subset of these participants …

Quantitative Analysis Of Production ‎And Its Components For T.Durum ‎Wheat Varieties Under The ‎Conditions Of The Syrian Coast, Paul Khoury ‎, Salih Kebili

Jerash for Research and Studies Journal مجلة جرش للبحوث والدراسات

This study was carried during 1998-2000 to evaluated six varieties of American and Asian durum ‎wheat belonging to the international group of Vavilov Institute for plant breeding (VIR), and ‎four European varieties in traduced under the conditions of the coastal area of Syria. These ‎varieties were compared with two local varieties in terms of important economic and ‎agricultural traits. The best variety will be selected for subsequent use in breeding programs ‎‎(Selection or Hybridization). A statistical analysis was performs, which showed significant ‎differences among varieties and between varieties and the control. Correlation and regression ‎analysis in addition to several other …

Classification Of Phytoplankton ‎Species In Different Habitats From ‎The Coastal Parts Of The Sea Region ‎North Of Lattakia, Nadim Mahmoud, Sawsan Musa

Jerash for Research and Studies Journal مجلة جرش للبحوث والدراسات

Water samples were collected monthly during 1999, from four sites, of different habitats. The ‎study revealed the existence of a total of 120 phytoplankton species, composed of 76 ‎Bacillarophyte, 37 Dinoflagellate, 3 Cyanophyte and 4 Chliorophyte species. Moreover, the ‎study also revealed considerable physio - chemical variations in their water, as well as ‎considerable variations in chlorophyll a. The physio - chemical variations of water, in the four ‎stations most likely is responsible for the variations of the phytoplanktonic species found in ‎them and their population densities.

Thermodynamic Potassium In Iraqi ‎Soils, Ahmed Al-Zubaidi, Shatha Al-Rubaie

Jerash for Research and Studies Journal مجلة جرش للبحوث والدراسات

In order to characterize the status and behavior of potassium in Iraqi soils thermodynamically, ‎twenty eight surface soil samples were collected from different locations to represent the ‎most dominant soil groups in Itrg (put thin names) Chemical, physical and mineralogical ‎characteristics were determined. The potassium forms of soluble, exchangeable, non - ‎exchangeable, mineral and elemental were determined. Thermodynamic parameters related ‎to potassium such as ionic strength, activity coefficient of potassium, activity ratio (K⁺: Ca^{2 +} + ‎Mg^{2 +}) and the free energy of replacement (DF) of K⁺: Ca² + mg²⁺ were …

Isolation Of Proteins That Have The ‎Ability To Inhibit Potato Y Virus ‎‎(Pvy) Replication From Datura ‎Plants - Jimson Weed Datura ‎Strmonium, Raqeeb Al-Ani, Osama Al-Issawi, Shaalan Al-‎Mashaikhi

Jerash for Research and Studies Journal مجلة جرش للبحوث والدراسات

Two protein portions from Datura inhibiting the multiplication of PVY “were obtained by ‎filtration through sephadex G - 100. The first was maintained its activity at 60 с for 10 min; ‎whereas the other lost its activity at this temp. The SDS- polyacrylamide gel electrophoresis of ‎the heat resistant one revealed the presence of 8 polypeptides with molecular weights; 12000 ‎‎, 13000 , 22000 , 25000 , 29000 , 40000 and two other of smaller molecular weights . No ‎serological reaction was ovserced between these proteins and the antiserum of PVA, PVS, ‎PVM, PVX and PVY. No precipitate was observed …

Agricultural Credits In Jordan : ‎ A Field Survey For Irbid District, Fawzi Al-‎Khatib

Jerash for Research and Studies Journal مجلة جرش للبحوث والدراسات

This study examines problems and obstacles facing agricultural ‎credit in Jordan in general, and Irbid district in particular.‎A questionnaire was designed for this this purpose.‎The statistical results were analysed and the Five point Likert ‎Scale was applied, Using the well-known ( SPSSX).‎The study suggests the creation of a new agricultural credit institution ‎to replace the actual infective credit organizations.‎The study ends with recommendations and policy implications for ‎desistion maker in Jordan.4‎

Spatial-Temporal Modeling Of Agricultural Water Surface Features In Northeastern Arkansas., Daniel Dewayne Shults

Student Theses and Dissertations

The Mississippi River Valley Alluvial Aquifer (MRVA) has been the primary source of irrigation water in Northeastern Arkansas since the early 1900s. Over time the MRVA water level has declined due to over-pumping of farm wells and water restrictive geology. The aquifer is expected to continue declining but with water conservation strategies in place, this vital resource could be preserved for future farmers. This thesis investigated using remotely sensed data to assess landforms associated with agricultural water conservation across Northeastern Arkansas. The remotely sensed data proved to be useful at creating temporal assessments of pre-existing irrigation reservoirs, identifying new irrigation …

Making Agriculture Carbon Neutral Amid A Changing Climate: The Case Of South-Western Australia, Ross Kingwell

Climate Science Research Articles

Making Australian agriculture carbon neutral by 2050 is a goal espoused by several agricultural organisations in Australia. How costly might it be to attain that goal, especially when adverse climate change projections apply to agriculture in southern Australia? This study uses scenario analysis to examine agricultural emissions and their abatement via reforestation in south-western Australia under projected climate change. Most scenarios include the likelihood of agricultural emissions being reduced in the coming decades. However, the impact of projected adverse climate change on tree growth and tree survival means that the cost of achieving agricultural carbon neutrality via reforestation is forecast …

Tax Planning For High Income, Tina N. Barrett

Cornhusker Economics

Agriculture has always been an industry with cyclical income trends. Prior to 2003, the average farm income reported in our annual data would typically go up and down each year -- having a good year and then a bad year and then a good year again. Since then, the trend has been more about longer periods of good, followed by multiple years of down income, etc. These longer stretches also see more extremes and this makes tax planning even more important and more difficult. More important because we are likely not making a decision that only affects one year and …

Managing Vegetation Around Fruit Trees, Teryl Roper

All Current Publications

Fruit trees thrive along the Wasatch Front and in many other locations in Utah. Backyard fruit trees are very common in Utah, and producers quickly become attuned to insect and disease pests that can swiftly spoil substantial amounts of fruit. They are typically less aware of the detrimental effect of competing vegetation around fruit trees. This fact sheet describes the nature of vegetation competition and proposes management strategies to reduce or eliminate competition.

The Impacts Of Land Management Practices On Soil Organic Carbon And Soil Physical Properties, Kinsey Hamby, Raelee Story, Dallas Patey

Scholars Week

The Impacts of Land Management Practices on Soil Organic Carbon and Soil Physical Properties

K. Hamby, R. Story, D. Patey, C. Hale, I. P. Handayani, B. Parr, and M. Snider

Hutson School of Agriculture, Murray State University

ABSTRACT

To understand how to care for our soils, an understanding of soil physical properties must first be established. Soil organic carbon (SOC) refers to the carbon component of the organic compounds found in soil organic matter (SOM). SOC can be an indicator of soil structure, tilth, aeration, drainage, and stability. Soil pH is the measure of hydrogen ions suspended in a soil …

Social Pressure, Altruism, Free-Riding, And Non-Compliance In Mask Wearing By U.S. Residents In Response To Covid-19 Pandemic, Courtney Bir, Nicole Olynk Widmar

Department of Agricultural Economics Faculty Publications

Human behavior, such as wearing a mask in public, affects the trajectory of the COVID-19 pandemic. A nationally representative survey of 1198 U.S. residents was used to study demographics, perceptions, and stated beliefs of residents who indicated they believe masks have a role in society in response to COVID-19 but self-reported not wearing masks in at least one public place studied. Individuals who believed wearing masks protected others were more likely to report voluntarily wearing them, providing possible evidence of altruism. Perceiving social pressure negatively impacted the probability of voluntary mask wearing amongst those who believed masks have a role …

Genome-Wide Dna Polymorphism Analysis And Molecular Marker Development For The Setaria Italica Variety “Ssr41” And Positional Cloning Of The Setaria White Leaf Sheath Gene Siwls1, Hui Zhang, Sha Tang, James C. Schnable, Qiang He, Yuanzhu Gao, Mingzhao Luo, Guanqing Jia, Baili Feng, Hui Zhi, Xianmin Diao

Department of Agronomy and Horticulture: Faculty Publications

Genome-wide DNA polymorphism analysis and molecular marker development are important for forward genetics research and DNA marker-assisted breeding. As an ideal model system for Panicoideae grasses and an important minor crop in East Asia, foxtail millet (Setaria italica) has a high-quality reference genome as well as large mutant libraries based on the “Yugu1” variety. However, there is still a lack of genetic and mutation mapping tools available for forward genetics research on S. italica. Here, we screened another S. italica genotype, “SSR41”, which is morphologically similar to, and readily cross-pollinates with, “Yugu1”. High-throughput resequencing of “SSR41” …

A Sugarcane G-Protein-Coupled Receptor, Shgpcr1, Confers Tolerance To Multiple Abiotic Stresses, Manikandan Ramasamy, Mona B. Damaj, Carol Vargas-Bautista, Victoria Mora, Jiaxing Liu, Carmen S. Padilla, Sonia Irigoyen, Tripti Saini, Nirakar Sahoo, Jorge A. Dasilva, Kranthi K. Mandadi

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

Sugarcane (Saccharum spp.) is a prominent source of sugar and serves as bioenergy/biomass feedstock globally. Multiple biotic and abiotic stresses, including drought, salinity, and cold, adversely affect sugarcane yield. G-protein-coupled receptors (GPCRs) are components of G-protein-mediated signaling affecting plant growth, development, and stress responses. Here, we identified a GPCR-like protein (ShGPCR1) from sugarcane and energy cane (Saccharum spp. hybrids) and characterized its function in conferring tolerance to multiple abiotic stresses. ShGPCR1 protein sequence contained nine predicted transmembrane (TM) domains connected by four extracellular and four intracellular loops, which could interact with various ligands and heterotrimeric G …

The Coronavirus Pandemic And International Trade, E. Wesley F. Peterson

Cornhusker Economics

The Coronavirus pandemic has disrupted economic activities around the world. Many businesses had to cease operations and furlough or lay off their workers. The World Bank (2021) has reported that global economic output fell by 3.4% in 2020. The good news is that the massive infusion of financial support from many governments in high-income countries meant that the worst economic effects of the pandemic were mitigated, and a rapid recovery has begun to make up for the pandemic-related losses. The International Monetary Fund (IMF) predicts that the global economy will grow by 5.9% in 2021 recovering the 2020 losses and …

A Chickpea Genetic Variation Map Based On The Sequencing Of 3,366 Genomes, Rajeev K. Varshney, Manish Roorkiwal, Shuai Sun, Prasad Bajaj, Annapurna Chitikineni, Mahendar Thudi, Narendra P. Singh, Xiao Du, Hari D. Upadhyaya, Diego Jarquin

Department of Agronomy and Horticulture: Faculty Publications

Zero hunger and good health could be realized by 2030 through effective conservation, characterization and utilization of germplasm resources1 . So far, few chickpea (Cicerarietinum) germplasm accessions have been characterized at the genome sequence level2 . Here we present a detailed map of variation in 3,171 cultivated and 195 wild accessions to provide publicly available resources for chickpea genomics research and breeding. We constructed a chickpea pan-genome to describe genomic diversity across cultivated chickpea and its wild progenitor accessions. A divergence tree using genes present in around 80% of individuals in one species allowed us to estimate the divergence of …

Willingness Of Non-Industrial Private Forest Landowners To Obtain A Private Versus Public Consultation, Erika Largacha

LSU Master's Theses

Promoting conservation practices among family forests landowners play a critical role to enhance forest health and ecosystem services. Several certification programs recognize such efforts, but participation among landowners varies based on their characteristics, program requirements, and incentives. One crucial step of certification is to obtain a forest management plan, but acquisition among landowners remains extremely low. Several studies suggest connecting landowners with foresters as the key element towards the adoption of forest management plans. Because foresters are typically employed by public forestry agencies or as private self-employed consultants, landowners' willingness to work with either may differ. As far as we …

Sampling Bias Exaggerates A Textbook Example Of A Trophic Cascade, Elaine M. Brice, Eric J. Larsen, Daniel R. Macnulty

Aspen Bibliography

Understanding trophic cascades in terrestrial wildlife communities is a major challenge because these systems are difficult to sample properly. We show how a tradition of non-random sampling has confounded this understanding in a textbook system (Yellowstone National Park) where carnivore [Canis lupus (wolf)] recovery is associated with a trophic cascade involving changes in herbivore [Cervus canadensis (elk)] behaviour and density that promote plant regeneration. Long-term data indicate a practice of sampling only the tallest young plants overestimated regeneration of overstory aspen (Populus tremuloides) by a factor of 4–7 compared to random sampling because it favoured plants taller than the preferred …

Using Uav Technology Paired With Multispectral Cameras To Assess Crown Rust Epidemics In Oats, Turner A. Graham

LSU Master's Theses

Crown rust, caused by Puccinia cornonata f. sp. avenae, is a common disease of oats (Avena sativa) found virtually everywhere oats are cultivated. This disease has caused yield losses of 10 to 40% worldwide. Early detection is important for effective management. A more recently utilized technology in agriculture is unmanned aerial vehicles (UAVs). UAVs, or drones, equipped with cameras are now being used as a resource to take images of fields to identify pests and other issues that may be occurring. Normalized differentiated vegetative index (NDVI) is a numerical indicator used to determine the vegetative health of …