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Articles 1 - 30 of 46
Full-Text Articles in Life Sciences
The Economic Benefits Of The South African Agricultural Research Council’S Wheat Breeding Program: 1992–2015, Matthew James Coale
The Economic Benefits Of The South African Agricultural Research Council’S Wheat Breeding Program: 1992–2015, Matthew James Coale
Graduate Theses and Dissertations
Although classified as an upper middle-income country by the World Bank, food insecurity is still a concern throughout South Africa, as was evident in 2014–2015 when a drought left 22% of households food insecure. As such, agricultural research in South Africa is needed specifically in plant breeding to increase yields and help mitigate future food insecurity. To fill this need, the South African government funds the Agricultural Research Council (ARC), which conducts holistic research on wheat and other crops. Wheat is important to South African food security; due to the significant drop in wheat area planted since the abolishment of …
Profitability Analysis Of Varying Herd Sizes Based On Price Signals In Cow-Calf Operations, Colson Tester
Profitability Analysis Of Varying Herd Sizes Based On Price Signals In Cow-Calf Operations, Colson Tester
Agricultural Economics and Agribusiness Undergraduate Honors Theses
The third most consumed meat around the world is beef. Despite global growth in demand, cattle markets experience price cycles related to biological production lags causing variability in cash flow and profitability for producers. Price-driven herd size management strategies thus have received attention. This study adds to that literature by analyzing both price and production risk using three herd size management strategies: i) steady state – holding herd size constant; ii) dollar cost averaging – keeping reinvestment constant by varying the number of replacement heifers retained at a constant long run average dollar total; and iii) moving average – using …
Modelling The Impact Of National Development Strategies For The East African Rice Sector, Florence Muthee
Modelling The Impact Of National Development Strategies For The East African Rice Sector, Florence Muthee
Graduate Theses and Dissertations
The 2008 food crisis prompted many food importing nations to reconsider the need to be self-sufficient especially in their staple food needs. This awakening led to the launch of the Coalition for Africa Rice Development (CARD) initiative with a goal to double rice production in Africa. Under the CARD umbrella member countries drafted individual National Rice Development Strategies (NRDS). This study is a quantitative assessment of four East African countries’ NRDS: Kenya, Rwanda, Tanzania and Uganda within dynamic global rice economy models. The NRDS targets and strategies are not realistic and included under estimation of rice consumption for Kenya, an …
Economic And Policy Evaluations And Impacts Of The National Rice Development Policy Strategies In Malaysia: Self-Sufficiency, International Trade, And Food Security, Roslina Binti Ali
Economic And Policy Evaluations And Impacts Of The National Rice Development Policy Strategies In Malaysia: Self-Sufficiency, International Trade, And Food Security, Roslina Binti Ali
Graduate Theses and Dissertations
Despite the fact that the recent rice policy has been moving to a strategy of self-sufficiency while the status quo of the national rice economy remains ambiguous, Malaysia has made an extreme policy decision to pursue an autarky economy in its rice sector, thus closing borders from the international markets in the future. The goal of this dissertation research is to comprehensively evaluate a deep-rooted rice policy in Malaysia and analyze the holistic impacts of the self-sufficiency and international trade policies at the national and farm-household levels, utilizing economic frameworks. The protectionist policy measures using a Policy Analysis Matrix reveals …
Time Series Forecast Analysis In Wholesale Broiler Markets, Christopher R. Sims
Time Series Forecast Analysis In Wholesale Broiler Markets, Christopher R. Sims
Graduate Theses and Dissertations
In 2016 the chicken industry provided nearly 1.2 million jobs, 68 billion dollars in wages, 313 billion dollars in economic activity and 24 billion dollars in government revenue (John Dunham & Associates, Inc., 2016). Broiler production has changed dramatically from the early 90’s to the turn of the 21st century. Technological advancements, continuous improvements, production efficiencies and industry changes have made the industry the global market it is today. The poultry industry is an extremely volatile market with prices constantly fluctuating in response to input price volatility and demand and supply changes. These changes are often driven by world economic …
In The Field The Women Saved The Crop: The Women’S Land Army Of World War Ii, Denna M. Clymer
In The Field The Women Saved The Crop: The Women’S Land Army Of World War Ii, Denna M. Clymer
Graduate Theses and Dissertations
The Women’s Land Army brought together rural and urban sectors of the United States in a climate of national and regional crisis. By the time the country was cast into war, the agricultural sector was already caught in a downward economic spiral that drove away laborers. With demand falling, and farms propped up only by experiments in subsidy and parity, when military and industrial jobs emerged in urban areas, farm laborers became scarce. At the same time the war created jobs for men outside of the agricultural sector, farm prices recovered and demand soared, forcing farmers to look to women …
Evaluation Of Insecticide Seed Treatments To Protect Rice (Oryza Sativa) Against Various Herbicides, Steven Michael Martin
Evaluation Of Insecticide Seed Treatments To Protect Rice (Oryza Sativa) Against Various Herbicides, Steven Michael Martin
Graduate Theses and Dissertations
The increase in herbicide-resistant weeds in Arkansas crop fields has led to the need for new herbicide modes of action for use in all crops. This need has led to the introduction of technologies that can be devastating to conventional rice crops. Field observation, noted that insecticide seed treatments used in rice could potentially reduce the effects of off-target movement of herbicides onto rice crops and possibly reduce the negative effects of some herbicides applied directly to rice. Research was conducted to determine if insecticide seed treatments could reduce the harmful effects of drift from imazethapyr and glyphosate onto conventional …
Rice Hull Bioreactor For Recirculating Aquaculture, Marlon A. Greensword
Rice Hull Bioreactor For Recirculating Aquaculture, Marlon A. Greensword
LSU Doctoral Dissertations
The engineering of floating media biofilters has been optimized over the years. The backwashing process has made them more energy and water efficient. Likewise, moving bed bioreactors (MBBR) are gaining interest and popularity because they are relatively affordable to build. Yet, developing countries’ aquaculture production remains largely excluded from the advances made in recirculating aquaculture systems (RAS). This discrepancy is partially driven by the high costs of media such plastic beads and Kaldnes (KMT) media, commonly used in MBBR.
This dissertation evaluates the usability and profitability of rice hulls (RH), an abundant by-product in many developing nations, as a sinking …
Qualitative Analysis Of Social Capital In Arkansas – A Case Study Based Approach, Valerie Kilders
Qualitative Analysis Of Social Capital In Arkansas – A Case Study Based Approach, Valerie Kilders
Graduate Theses and Dissertations
Despite the vast research on social capital in general, only very little research is focused on the quality of social capital. While some research studies incorporated aspects that are associated with the quality of social capital, they often take a one dimensional approach that fails to take the different aspects of the topic into consideration. In order to gain more insights into this I conducted a series of semi-structured interviews in three rural counties in Arkansas. The counties were selected on the basis of a social capital index of all U.S. counties using quantitative measures. I used a guide on …
Evaluating The Impact Of An All-Vegetable Protein Supplement Containing Fat Emulsifiers And Probiotics On Broiler Performance, Jordan Weil
Graduate Theses and Dissertations
Currently, several niche markets, such as organic and “all natural”, are marketed within the poultry industry. However, little research has been undertaken to determine the cost-effectiveness of poultry diets used to produce chicken within these markets. Specifically, the economics and resulting profits associated with raising chicken with antibiotic-free, all-vegetable (AV) diets are not evaluated. As national chain restaurants such as Chick-fil-A and Panera Bread begin to mandate poultry suppliers raise chicken without antibiotics and use AV diets, it becomes increasingly important to evaluate the economics for integrators. Given the rapidly changing feeding strategies necessary to respond to consumers’ and wholesalers’ …
The Bracero Program In The Arkansas Delta: The Power Held By Planter Elite, William Chase Whittington
The Bracero Program In The Arkansas Delta: The Power Held By Planter Elite, William Chase Whittington
Graduate Theses and Dissertations
This paper examines the Bracero Program and its implementation from the start of World War II to the end of the program in 1964. Farmers and planters in America needed a sufficient labor supply once the war started, and Mexico became the main supplier. The Bracero Program was initiated as a war effort and meant to only last until the end of the war, but the planter elite had far different intentions once they realized how productive and inexpensive the program could be. This paper identifies the leading causes for how the Bracero Program was able to last over twenty …
The Cost Of Forward Contracting In Mississippi River Barge Freight And Cif Nola Markets, Bradley John Isbell
The Cost Of Forward Contracting In Mississippi River Barge Freight And Cif Nola Markets, Bradley John Isbell
Graduate Theses and Dissertations
Grain elevators often use paper markets to mitigate the risk of (or hedge) their cash grain positions, as well as establish a profit margin through basis trading. Typically, merchandisers use futures or forward contracts to perform these transactions. However, in order to liquidate a cash grain position, grain transportation must be arranged in order to deliver the grain to the buyer. For elevators located along the Mississippi River system selling to Gulf export elevators in New Orleans, that mode of grain transportation is most likely river barge. Contracts for barges are bought and sold by grain merchants either directly with …
Analyzing The Utilization And Trade Of Distillers’ Dried Grains With Solubles, Maria Celeste De Matteis
Analyzing The Utilization And Trade Of Distillers’ Dried Grains With Solubles, Maria Celeste De Matteis
Masters Theses
The production and consumption of distillers’ dried grains with solubles (DDGS), a coproduct of corn-based ethanol, has rapidly grown over the last decade in the United States (U.S.) and lately in other countries that prompt biofuel production, such as Argentina. DDGS has a more concentrated nutritional value relative to traditional feed grains and can be used in feed rations to meet the energy and protein requirements. In the first study, I evaluated the factors that determine the exports of U.S. DDGS, while the second study focused on the effects of the inclusion of DDGS in the feed rations of swine …
Decision Support Software For Palmer Amaranth Weed Control, Karen Renee Lindsay
Decision Support Software For Palmer Amaranth Weed Control, Karen Renee Lindsay
Graduate Theses and Dissertations
Herbicide-resistant Palmer amaranth [Amaranthus palmeri (S.) Wats.] has been identified as one of the most troublesome weeds, specifically for corn (Zea mays L.), cotton (Gossypium hirsutum L.), and soybean [Glycine max (L.) Merr.] producers in the southern United States. The use of herbicide technology remains the most widely used method of weed control, despite the evolution of herbicide-resistant Palmer amaranth. Therefore, a need currently exists for research and extension education to encourage the adoption of Integrated Pest Management (IPM) to address the problem of herbicide-resistant Palmer amaranth in the southern United States. By equipping crop producers, educators, and weed management …
Economic Assessment Of A Highly Pathogenic Avian Influenza Outbreak In Washington And Benton Counties In Arkansas, Antonio Beitia
Economic Assessment Of A Highly Pathogenic Avian Influenza Outbreak In Washington And Benton Counties In Arkansas, Antonio Beitia
Graduate Theses and Dissertations
Highly Pathogenic Avian Influenza (HPAI) presents a substantial economic risk to the poultry industry. Domesticated fowl contract HPAI initially through exposure, direct or indirect with migratory waterfowl and outbreaks can result in significant economic losses to growers and the poultry industry at large. A HPAI outbreak occurred in Minnesota and Iowa and spread across over 13 other states in 2014 and 2015. This caused an estimated $1.6 billion in losses (CDC, 2016) and led to shortages of eggs and turkeys together with elevated prices (Anni et al. 2005). Even small outbreaks of HPAI inflict substantial damages as USDA-APHIS guidelines necessitate …
Efficiency And Competitiveness Of Kosovo Raspberry Producers, Rina Vuciterna
Efficiency And Competitiveness Of Kosovo Raspberry Producers, Rina Vuciterna
Graduate Theses and Dissertations
Raspberry production is a growing industry in Kosovo. In addition to private investments, this growth has been supported by grants, subsidies, and direct investment from international donor organizations and governmental institutions. At present, most of the commercially produced raspberries in Kosovo are produced on small farms, harvested by farmers and packed manually by collection centers, and then sold in frozen form for the export market. The long-term viability and continued growth of raspberry production in Kosovo depends on the industry being able to compete in export markets and hold its own against production regions in Poland, Serbia, and Russia. Our …
Cost Benefit Analysis Of Genetic Markers In Cattle, Josh Crystal
Cost Benefit Analysis Of Genetic Markers In Cattle, Josh Crystal
Agricultural Economics and Agribusiness Undergraduate Honors Theses
Genetic sequencing in beef cattle (L. Bos Taurus) is expected to aid producers select cattle with traits that enhance profitability. Using data from experimental trials conducted with Angus, Brahman, and their reciprocal cross, this project analyzes the profitability of grazing endophyte infected tall Fescue (L. Festuca arundinacea Schreb.) vs. Bermuda grass (L. Cynodon dactylon) pasture. The study is unique in the sense that actual cow-calf breeding failure rates (open cows were not culled) were tracked from 1991 to 1997 on herds that were bred to calf in spring and either exposed to fungal endophyte (L.Acremonium coenophialum Morgan-Jones …
Refusing To Be Dispossessed: African American Land Retention In The Us South From Reconstruction To World War Ii, Camille Goldmon
Refusing To Be Dispossessed: African American Land Retention In The Us South From Reconstruction To World War Ii, Camille Goldmon
Graduate Theses and Dissertations
African Americans in the South were tied to the land during slavery and after emancipation. Many felt that land ownership was the key to freedom. For decades, black farmers strove for land ownership, in many cases falling prey to sharecropping and tenancy agreements in the meantime. Despite this drive toward independent farming, however, since 1920, there has been a steady decline in the number of black farm owners. This trend is especially prevalent in the Southern United States. The black farm owners who persevered through periods of economic, social, and political turmoil were able to, for varying reasons, navigate those …
Exploring Winery Operation As A Diversification Option For Native American Tribal Enterprises, Randi M. Combs
Exploring Winery Operation As A Diversification Option For Native American Tribal Enterprises, Randi M. Combs
Graduate Theses and Dissertations
The purpose of this research is to examine the perceptions of tribal members regarding the strengths, challenges, and opportunities presented by tribal winery operation. Specifically, issues of business diversification, marketing, perceived barriers to success, potential benefits to the tribe, and the role of agriculture in the preservation of tribal heritage were considered. A modified mixed-methods exploratory sequential research model was used to collect and organize data in two phases. Phase 1 quantitative data was used to inform the development of a Phase 2 qualitative interview protocol. Phase 1 found a significant relationship between a higher income level and a lower …
Influence Of Exogenous Phytase Level And Interaction With Supplmental Xylanase On Live Performance And Phosphorus Retention Of Broilers, Peyton Gilbert
Influence Of Exogenous Phytase Level And Interaction With Supplmental Xylanase On Live Performance And Phosphorus Retention Of Broilers, Peyton Gilbert
Graduate Theses and Dissertations
Two 3-week experiments were conducted, each using 480 day-old male broilers placed randomly among 96 battery cages (5 per cage; 680cm2 per bird), to evaluate the influence of phytase supplementation, with or without supplemental xylanase, on bird performance. Individual body weights and cage feed weights were taken on days 0, 7, 14, and 21, and mean BW, body weight gain (BWG), feed intake (FI), and FCR over each period calculated. Mortality was recorded daily and used to calculate livability and adjust FCR in both trials. In trial 2, excreta was collected by cage from 14 to 21 days for bone …
Rice Value Chain Development And Policy Sequencing In Southern Africa, Sandratra M. Razafinjoelina
Rice Value Chain Development And Policy Sequencing In Southern Africa, Sandratra M. Razafinjoelina
Graduate Theses and Dissertations
In the wake of the 2008 food crisis, net food importing countries questioned the reliance on the volatile world market to meet their food demand. Consequently, the necessity to be selfsufficient returned to the forefront of national priorities. In Africa, the Coalition for African Rice Development (CARD) initiative was initiated and aimed to double rice production in the continent by 2018, with the eventual goal of achieving self-sufficiency in rice production. To attain this goal, each of the 23 CARD member countries drafted a comprehensive value chain upgrading strategy called the National Rice Development Strategy (NRDS). This study intends to …
Spatial And Temporal Heterogeneity Of Carbon Storage And Optimal Provision Of Carbon Storage, Amine Mohamed Ben Ayara
Spatial And Temporal Heterogeneity Of Carbon Storage And Optimal Provision Of Carbon Storage, Amine Mohamed Ben Ayara
Masters Theses
Human activity, particularly the conversion of natural land cover into human-dominated cover types, is putting increasing pressure on the health of the global ecosystem. Loss of forestland is a major contributor to greenhouse gas (GHG) emissions, which cause climate change because forests can help sequester GHG emission in the atmosphere. However, mitigating climate change by sequestering carbon through reforestation and/or avoiding deforestation is an appealing option because of the potential scale of such sequestration, the possible cost advantages over other mitigation efforts, and the opportunity it provides to incentivize the sustainable use of rural lands. Incentive payments can support forest-based …
Essays On Protected Area Size: Effects On Ecological And Economic Effectiveness, Kristen Marie Thiel
Essays On Protected Area Size: Effects On Ecological And Economic Effectiveness, Kristen Marie Thiel
Masters Theses
Faced with continuing threats to biodiversity, governments are increasingly seeking to expand protected areas. Financial resources are limited, which often spurs conservation planners to prioritize locations for future protection. Thus, prioritization of protected areas is increasingly being evaluated based on the return on investment (ROI) they offer. This thesis consists of two essays analyzing the land acquisitions made by the world’s largest conservation organization, The Nature Conservancy (TNC). In the first essay, entitled “Effects of Protected Area Size on Conservation Return on Investment,” the increase in effective mesh size per dollar invested to acquire a parcel was greater for larger …
Determining The Effects Of Sulfur Fertility Levels On Edamame Soybean [ Glycine Max ( L. ) Merrill ] Protein Components, Theoneste Nzaranyimana
Determining The Effects Of Sulfur Fertility Levels On Edamame Soybean [ Glycine Max ( L. ) Merrill ] Protein Components, Theoneste Nzaranyimana
Theses and Dissertations
Edamame [Glycine max (L.) Merr.] a vegetable type soybean is harvested and consumed before reaching its maturity stage (R6). Its health properties drew attention to U.S. consumers because of its high protein content. Proteins are the major structural component of all cells in the living organisms. They are made of essential and non-essential amino acids which play a big role in growth and development and are source of energy. Proteins act as enzymes, antibodies, and hormones and blood protein. Sulfur (S) is a component of the amino acids cysteine (Cys) and methionine (Met) which are the building blocks for proteins. …
Choices And Preferences Of Vermont Master Gardeners - Do Socio-Demographics Matter?, Grace Matiru
Choices And Preferences Of Vermont Master Gardeners - Do Socio-Demographics Matter?, Grace Matiru
Graduate College Dissertations and Theses
ABSTRACT
This study was designed to characterize the choices, preferences and motivations of fruit and vegetable gardeners in Vermont, and to determine whether socio-demographic characteristics affect some of these choices, preferences and motivations. Using a survey of Vermont Extension Master Gardeners (EMGs), data were gathered over a 3-year period (2011-2013). The findings show most EMGs (>90%) garden in private home gardens, and the most popular vegetables grown were tomatoes, herbs, and salad greens. Beans, cucumbers and peppers sere also popular and among fruits, blueberries, apples, raspberries and strawberries were grown by over 40% of EMGs. Approximately 10% of EMG …
Investment For Trade? Impact Of Investment From Gulf Cooperation Council Countries On Trade, Sattam Faleh Almodarra
Investment For Trade? Impact Of Investment From Gulf Cooperation Council Countries On Trade, Sattam Faleh Almodarra
Theses and Dissertations--Agricultural Economics
The world has made great progress over the centuries through the massive increase in the interconnectedness of nations around the globe. Today, the world is connected through various ways, including the movement of goods, people, and money. The amount of goods traded across countries borders has drastically increased as the result of technological progress and the removal of barriers to trade. Not only has the world become more interconnected with the physical flows of goods and services, but also countries of the world have become more integrated financially. This study proposes to analyze how increase in financial flows, as measured …
Restoring And Sustaining Smallholder Kappaphycus Alvarezii Farming Post-Typhoon Haiyan/Yolanda In Molocaboc, Central Philippines, David C. Fenlon
Restoring And Sustaining Smallholder Kappaphycus Alvarezii Farming Post-Typhoon Haiyan/Yolanda In Molocaboc, Central Philippines, David C. Fenlon
Dissertations, Master's Theses and Master's Reports
The farming of marine seaweed has the potential to provide both nutritional and financial resources to developing communities such as the Molocaboc Islands in the Philippines. To foster this mariculture development approximately $1,000 USD in grant funds received from the US-Philippines Society was used to purchase materials needed to replace seaweed production infrastructure lost to Typhoon Haiyan (known as Super Typhoon Yolanda in the Philippines). The goal was to restore and expand smallholder farming of the seaweed Kappaphycus alvarezii (locally known as ‘guso’ in the Visayan dialect) in the Molocaboc Islands, thereby increasing harvest yields as compared to those …
The History Of The Federal Milk Marketing System And An Analytical View Of Unique Qualities Effects On Milk Prices In The Southeast, Owen Townsend
The History Of The Federal Milk Marketing System And An Analytical View Of Unique Qualities Effects On Milk Prices In The Southeast, Owen Townsend
Theses and Dissertations--Agricultural Economics
The Southeast Order has been milk deficit for over ten years and because of this milk has to be brought in from other orders to meet processor’s demand. Transportation credits provide processors with help to cover transportation costs to bring outside milk into the order. To help keep Class I utilization and support milk prices, relative to orders in the North, Order 7 has low diversion limits. As milk produced within Order 7 has been on a downward trend, milk brought into the order has not increased as consistently. In 2000 milk pooled from farms within the order made up …
An Analysis Of Factors Impacting Hay Auction Prices And The Potential For Nap To Reduce Alfalfa Revenue Risk, Madeline L. Dant
An Analysis Of Factors Impacting Hay Auction Prices And The Potential For Nap To Reduce Alfalfa Revenue Risk, Madeline L. Dant
Theses and Dissertations--Agricultural Economics
Hay auctions have generally been understudied due to their unique market structure. Therefore, the factors that influence the price of hay at auction markets are not well-known. The price of hay at auction markets reflects the various characteristics that differentiate each lot of hay sold. This study is aimed at analyzing the determinants of Central Kentucky hay prices. A hedonic price model is estimated using data collected from a Central Kentucky hay auction. Known hay attributes include forage species, form, bale weight, and nutritive value. An important aspect of this analysis is to determine whether the quality measures of the …
Three Essays On Food Safety Regulations And International Trade Of Agricultural Products, Jun Ho Seok
Three Essays On Food Safety Regulations And International Trade Of Agricultural Products, Jun Ho Seok
Theses and Dissertations--Agricultural Economics
This dissertation investigates food safety regulations and international trade of agricultural products dividing into three aspects: the signalling effect from U.S. strict food safety regulations on U.S. vegetable exports, political determinants of sanitary and photosanitary non-tariff barriers, and the impact of trade barriers on employment in developing countries. In chapter 2, we investigate the impact of high U.S. maximum residue limit (MRL) standards on U.S vegetable exports to 102 countries utilizing the hierarchical model. MRL, which is one of non-tariff barriers with respect to food safety, is applied to home and foreign countries at the same time. Thus, firms in …