Matching Items (85)
Description
This thesis was conducted in order to determine the role played by food miles metrics in making the agricultural industry more sustainable. In an effort to analyze the importance of eat locally this study utilizes a partial life cycle assessment. This study looks at oranges grown in Arizona and California and inputs such as water, energy, fertilizer, herbicide, pesticide, frost mitigation, and distance in order to conduct the partial life cycle assessment. Results of this study indicate that food miles are not as significant, in relation to overall energy input, as the locavore movement claims. This is because production processes account for a larger portion of the total energy used in the food chain than what these claims suggest. While eating locally is still a significant way of reducing energy use, this thesis shows that decisions about eating sustainably should not only focus on the distance that the products travel, but place equal, if not more, importance on energy use differences due to geographic location and in-farm operations. Future research should be completed with more comprehensive impact categories and conducted for different crops, farming, and locations. Further research is needed in order to confirm or challenge the results of this thesis. With more research conducted regarding this topic, ecological labeling of agricultural products could be improved to help consumers make the most informed choices possible.
ContributorsMaggass, Melissa Gail (Author) / Manuel-Navarrete, David (Thesis director) / Martin, Thomas (Committee member) / Barrett, The Honors College (Contributor) / School of Sustainability (Contributor) / W. P. Carey School of Business (Contributor) / Department of Management (Contributor)
Created2014-05
Description
The United Nation's forecasts the World's population to grow to 9 billion by year 2050. This statistic, coupled with the fact that current organic food production yields average near 40% lower than conventionally grown crops, indicates that current methods of "sustainable" agriculture are sure to strip the planet of more wildlife habitat in order to feed so many mouths. Plus, erratic weather causing inconsistent crop production will leave vulnerable groups highly susceptible to famine. Agriculture today has a very complex supply chain that pulls resources from around the world to take to market. The Vertical Farm, LLC (TVF) seeks to change this reality and make 100% chemical free product, available locally to all major markets. The Vertical Farm, LLC is much different than a typical farm and operates on a soil-less hydroponic growing system. This system uses up to 95% less water and less than 50% of the fertilizer that an open-air organic farm would consume, by delivering all of the necessary nutrients directly to its crop's roots and recycling the solution in a closed loop system. TVF seeks to operate in unutilized warehouses and retail spaces, which will serve to control every aspects of the growing environment. This entails replacing sunlight with specially designed LED lights for horticulture applications and an HVAC system that creates the perfect growing conditions for plants to transpire. All of these capabilities translate into TVF being able to grow consistently year-round, regardless of weather, and produce quality local vegetables 30% faster than a conventional farm. In order to determine the economic feasibility of this business model, a prototype first had to be designed, which can be seen on Appendix A, B, & C. This system, designed in collaboration with University of Arizona's Controlled Environment Agricultural Center's Director, Gene Giacomelli PH. D., has determined that the roughly 1.75-acre system is capable of producing over 2.5 million pounds of lettuce every year. The footprint of the building includes all 3 major aspects of produce production, growing, harvesting, and packaging, and this vertically integrated business model allows The Vertical Farm to capture the most value, while taking its product to market. The net operating income of this prototype design is estimated to be 11.94%, with revenue in excess of $5.7 million and the largest costs being the LED lights and electricity. The Vertical Farm has mitigated its potentially largest cost, labor, by streamlining all processes of production in addition to employing the use of high-tech materials handling robots to transport crops within the facility. The Vertical Farm's production facility is not designed with human comfortability in mind (aisles are only 3' wide), but instead maximizes floor space utilization in order to produce as many pounds of product as possible. As a result, The Vertical Farm's prototype not only demonstrates the economic feasibility of indoor vertical farming today, but also gives significant merit to its growth potential to capture a portion of the $20 billion American vegetable market.
ContributorsNickerson, Michael Scott (Author) / Eaton, Kathryn (Thesis director) / Schlacter, John (Committee member) / Department of Management and Entrepreneurship (Contributor) / Barrett, The Honors College (Contributor)
Created2016-12
Description
This research focused on how low-income communities in Ghana could convert Waste Vegetable Oil (WVO) into biodiesel to supplement their energy demands. The 2016 World Energy Outlook estimates that about 8 million Ghanaians do not have access to electricity while 82% of the population use biomass as cooking fuel. However, WVO is available in almost every home and is also largely produced by hotels and schools. There are over 2,700 registered hotels and more than 28,000 educational institutions from Basic to the Tertiary level. Currently, most WVOs are often discarded in open gutters or left to go rancid and later disposed of. Therefore, WVOs serve as cheap materials available in large quantities with a high potential for conversion into biodiesel and commercializing to support the economic needs of low-income communities. In 2013, a group of researchers at Kwame Nkrumah University of Science and Technology (KNUST) in Ghana estimated that the country could be producing between 82,361 and 85,904 tons of biodiesel from WVOs generated by hotels alone in 2015. Further analysis was also carried out to examine the Ghana National Biofuel Policy that was introduced in 2005 with support from the Ghana Energy Commission. Based on the information identified in the research, a set of recommendations were made to help the central government in promoting the biodiesel industry in Ghana, with a focus on low-income or farming communities. Lastly, a self-sustaining biodiesel production model with high potential for commercialization, was proposed to enable low-income communities to produce their own biodiesel from WVOs to meet their energy demands.
ContributorsAnnor-Wiafe, Stephen (Author) / Henderson, Mark (Thesis director) / Rogers, Bradley (Committee member) / Engineering Programs (Contributor) / Department of Management and Entrepreneurship (Contributor) / Barrett, The Honors College (Contributor)
Created2017-05
Description
Current farming demographics in the United States indicate an aging and overwhelmingly white group of farmers, stimulating the need for engaging a younger and more diverse population. There is an opportunity to engage these populations through farm-based internship and apprenticeship programs, which are immersive programs on small-scale, sustainable farms. These programs are unique in providing hands-on training, housing, meals, and a stipend in return for labor, presenting a pathway to social empowerment. The potential outcomes of increasing diversity and inclusion in farm programs are absent from the research on the benefits of diversity and inclusion in other work environments, such as the corporate setting. This paper presents the results of a study aimed at determining levels of diversity and inclusion in United States farm-based internship programs, and the viability of these programs as an effective opportunity to engage marginalized young people in farming. The study of 13 farm owners and managers across the U.S. found that the participants are focused on fostering education and training, environmental benefits, and a sense of community in their respective programs. All participants either want to establish, or believe they currently have, an inclusive workplace on their farm, but also indicated a barrier to inclusivity in the lack of a diverse applicant pool. Future recommendations for removing that barrier and involving more young, diverse interns include increased outreach and access to these programs, the use of inclusive language, and further research.
ContributorsLascola, Dania (Co-author) / Biel, Braden (Co-author) / Cloutier, Scott (Thesis director) / MacFadyen, Joshua (Committee member) / School of International Letters and Cultures (Contributor) / School of Geographical Sciences and Urban Planning (Contributor) / School of Sustainability (Contributor) / Barrett, The Honors College (Contributor)
Created2017-05
Description
The intent of this paper is to first demonstrate the consistency of a U.S. based poultry technology incentive program regarding Nigeria, with current United States State Department and related United States Agency for International Development mission, and present day programs. By implementing the proposed incentive strategy, Nigeria in the midst of a devastating famine will become more food secure, and as a result the country as a whole will gain political stability. The correlation between food security and political stability will be discussed in greater detail further in the essay. The basis of an incentive strategy stems from the lack of poultry companies entering the current Nigerian market, due to risk factors and lucrative alternatives, however there are increasing benefits to companies willing to partner with or supply Nigerian domestic producers. The proposed incentive strategy is limited to U.S. poultry technology companies for the efficiencies inherent in poultry production. Limiting the incentives to U.S. poultry technology companies only entering the Nigerian domestic markets as partners or suppliers has its pros and cons, but will have a positive effect on Nigeria. Most importantly, the economic benefits, strengthening of U.S. and Nigerian diplomatic relations and promotion of stable democracies in the region are all compelling reasons for the United States to implement the proposed strategy. Nigeria is in the grips of a devastating famine threatening millions of its citizens with malnutrition and starvation. While there are ongoing humanitarian efforts that stem this tragedy, most focus solely on short term needs. The United States has an established diplomatic relationship with Nigeria, which supports key trade dependencies, both inbound and outbound from the US. The frailty of the present political and human conditions, while presently friendly to the US, presents risks to subversion to this important relationship. This proposal seeks to deploy strategies in the local food production, specifically the poultry segment, which; address frailties in the current environment, can be implemented within intermediate timeframes, are sustainable in the long term, and create synergistic outcomes for both the US and Nigerian interests.
ContributorsMoreno, Nathaniel Arnold (Author) / Iheduru, Okechukwu (Thesis director) / Herrera, Richard (Committee member) / W.P. Carey School of Business (Contributor) / School of Politics and Global Studies (Contributor) / Morrison School of Agribusiness (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
Description
Due to recent changes in climate, hurricanes have become more violent and destructive in the tropical region of the Caribbean. Extreme weather events have destroyed freshwater sources in many islands, affecting the overall food and water security of the region. More resilient forms of collecting freshwater for citizens and agriculture must be proposed in order to mitigate future weather impacts and increase future water security. Rainwater harvesting is an ideal and sustainable source of freshwater that can be adapted into existing households to help ease reliance on city water sources. Rainwater harvesting systems are effective sources of supplemental freshwater because they are easy to incorporate and inexpensive compared to other sources of freshwater. Dennis McClung, founder and owner of global charity, Garden Pool, has created the Climate Smart Farm, an agriculture system that incorporates rainwater harvesting to help create a more climate resilient farm. The Climate Smart Farm is adaptable and can be customized to incorporate solar energy, vertical gardening, aquaponics, hydroponics, plant propagation techniques, and more to grow crops in a more sustainable fashion. The system has recently been installed in the island of Barbuda, which was badly affected by the hurricanes in the summer of 2017. The system has been positively accepted by the country due to its ability to make agriculture simple and sustainable. It can be built with local materials, making the building process economy friendly. And with the addition of plant propagation techniques, the Climate Smart Farm can extend growing seasons and increase overall yields.
ContributorsLeung, Karyn Mae (Author) / Eakin, Hallie (Thesis director) / McClung, Dennis (Committee member) / School of Earth and Space Exploration (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
Description
The Prosopis genus of trees, also known as mesquites, are uniquely equipped to allow for an agroforestry regime in which crops can be grown beneath the canopy of the tree. Mesquites have the ability to redistribute water moisture in such a way that allows plants under the canopy to use water that has been brought up by the roots of mesquite trees. This means that there is a potential for food crops to be grown under the trees without using additional irrigation measures. This could be used where access to water is limited or for a sustainability-minded farmer who is trying to reduce water inputs in an arid environment. Mesquite trees produce a variety of products, including lumber and bean pods that can be ground down into an edible flour. Both products demand a high price in the marketplace and are produced in addition to the crops that can potentially be grown beneath the mesquite tree. In order to determine whether or not it is possible to grow crops under mesquite trees, I reviewed a wide range of literature regarding hydraulic redistribution, mesquite trees in general, and what plants might be best suited for growing beneath a mesquite. The list of plants was narrowed down to four crops that seemed most likely to survive in shaded, low water conditions in a hot environment. There has not been any research done on crops growing beneath mesquite trees, so the next step for research would be to experiment with each of the crops to determine how well each species can adapt to the specified conditions.
ContributorsMesser, Luke Winston (Author) / Eakin, Hallie (Thesis director) / Hall, Sharon (Committee member) / School of Sustainability (Contributor) / Barrett, The Honors College (Contributor)
Created2016-12
Description
As inhabitants of a desert, a sustainable water source has always been and will continue to be a crucial component in developing the cities Arizonans call home. Phoenix and the surrounding municipalities make up a large metropolitan area that continues to grow in spatial size and population. However, as climate change becomes more of an evident challenge, Arizona is forced to plan and make decisions regarding its ability to safely and efficiently maintain its livelihood and/or growth. With the effects of climate change in mind, Arizona will need to continue to innovatively and proactively address issues of water management and the effects of urban heat island (UHI). The objective of this thesis was to study the socioeconomic impacts of four extreme scenarios of the future Phoenix metropolitan area. Each of the scenarios showcased a different hypothetical extreme and uniquely impacted factors related to water management and UHI. The four scenarios were a green city, desert city, expanded city into desert land, and expanded city into agricultural land. These four scenarios were designed to emphasize different aspects of the urban water-energy-population nexus, as the future of the Phoenix metropolitan area is dynamic. Primarily, the Green City and Desert City served as contrasting viewpoints on UHI and water sustainability. The Expanded Cities showed the influence of population growth and land use on water sustainability. The socioeconomic impacts of the four scenarios were then analyzed. The quantitative data of the report was completed using the online user interface of WaterSim 5.0 (a program created by the Decision Center for a Desert City (DCDC) at Arizona State University). The different scenarios were modeled in the program by adjusting various demand and supply oriented factors. The qualitative portion as well as additional quantitative data was acquired through an extensive literature review. It was found that changing land use has direct water use implications; agricultural land overtaken for municipal uses can sustain a population for longer. Though, removing agricultural lands has both social and economic implications, and can actually cause the elimination of an emergency source. Moreover, it was found that outdoor water use and reclaimed wastewater can impact water sustainability. Practices that decrease outdoor water use and increase wastewater reclamation are currently occurring; however, these practices could be augmented. Both practices require changes in the publics' opinions on water use, nevertheless, the technology and policy exists and can be intensified to become more water sustainable. While the scenarios studied were hypothetical cases of the future of the Phoenix metropolitan area, they identified important circumscribing measures and practices that influence the Valley's water resources.
ContributorsVon Gnechten, Rachel Marie (Author) / Wang, Zhihua (Thesis director) / White, Dave (Committee member) / Civil, Environmental and Sustainable Engineering Programs (Contributor) / Barrett, The Honors College (Contributor)
Created2016-12
Description
"Wide adaptation" is an agricultural concept often employed and seldom closely examined. Norman E. Borlaug, while working for the Rockefeller Foundation (RF) on an agricultural project in Mexico in the 1950s, discovered that some tropical wheat varieties could be grown over broad geographic regions, not just in Central and South America but also in the Middle East and South Asia. He called this wide, or broad, adaptation, which scientists generally define as a plant type that has high yields throughout diverse environments. Borlaug soon made wide adaptation as a core pillar of his international wheat program. Borlaug's wheat program rapidly expanded in the 1960s, and he and his colleagues from the RF heavily promoted wide adaptation and the increased use of fertilizers in the Middle East and India. These events led to the green revolution, when several countries rapidly increased their wheat production. Indian wheat cultivation changed radically in the 1960s due to new technologies and policy reforms introduced during the green revolution, and farmers' adoption of 'technology packages' of modern seeds, fertilizer, and irrigation.
Just prior to the green revolution, Indian wheat scientists adopted Borlaug’s new plant breeding philosophy—that varieties should have as wide an adaptation as possible. But Borlaug and Indian wheat scientists also argued that wide adaptation could be achieved by selecting only plants that did well in high fertility and irrigated environments. Scientists claimed, in many cases erroneously, that widely adapted varieties still produced high yields in marginal, or resource poor, areas. Many people have criticized the green revolution for its unequal spread of benefits, but none of these critiques address wide adaptation—the core tenant held by Indian wheat scientists to justify their focus on highly productive land while ignoring marginal and rainfed agriculture. My dissertation describes Borlaug and the RF's research program in wide adaptation, Borlaug's involvement in the Indian wheat program, and internal debates about wide adaptation and selection under favorable environments among Indian scientists. It argues that scientists leveraged the concept of wide adaptation to justify a particular regime of research focused on high production agriculture, and that the footprints of this regime are still present in Indian agriculture.
Just prior to the green revolution, Indian wheat scientists adopted Borlaug’s new plant breeding philosophy—that varieties should have as wide an adaptation as possible. But Borlaug and Indian wheat scientists also argued that wide adaptation could be achieved by selecting only plants that did well in high fertility and irrigated environments. Scientists claimed, in many cases erroneously, that widely adapted varieties still produced high yields in marginal, or resource poor, areas. Many people have criticized the green revolution for its unequal spread of benefits, but none of these critiques address wide adaptation—the core tenant held by Indian wheat scientists to justify their focus on highly productive land while ignoring marginal and rainfed agriculture. My dissertation describes Borlaug and the RF's research program in wide adaptation, Borlaug's involvement in the Indian wheat program, and internal debates about wide adaptation and selection under favorable environments among Indian scientists. It argues that scientists leveraged the concept of wide adaptation to justify a particular regime of research focused on high production agriculture, and that the footprints of this regime are still present in Indian agriculture.
ContributorsBaranski, Marcin (Author) / Kinzig, Ann P. (Thesis advisor) / Mathur, Prem N. (Committee member) / Eakin, Hallie (Committee member) / Sarewitz, Daniel (Committee member) / Wetmore, Jameson (Committee member) / Arizona State University (Publisher)
Created2015
Description
Alfalfa is a major feed crop widely cultivated in the United States. It is the fourth largest crop in acreage in the US after corn, soybean, and all types of wheat. As of 2003, about 48% of alfalfa was produced in the western US states where alfalfa ranks first, second, or third in crop acreage. Considering that the western US is historically water-scarce and alfalfa is a water-intensive crop, it creates a concern about exacerbating the current water crisis in the US west. Furthermore, the recent increased export of alfalfa from the western US states to China and the United Arab Emirates has fueled the debate over the virtual water content embedded in the crop. In this study, I analyzed changes of cropland systems under the three basic scenarios, using a stylized model with a combination of dynamical, hydrological, and economic elements. The three scenarios are 1) international demands for alfalfa continue to grow (or at least to stay high), 2) deficit irrigation is widely imposed in the dry region, and 3) long-term droughts persist or intensify reducing precipitation. The results of this study sheds light on how distribution of crop areas responds to climatic, economic, and institutional conditions. First, international markets, albeit small compared to domestic markets, provide economic opportunities to increase alfalfa acreage in the dry region. Second, potential water savings from mid-summer deficit irrigation can be used to expand alfalfa production in the dry region. Third, as water becomes scarce, farmers more quickly switch to crops that make more economic use of the limited water.
ContributorsKim, Booyoung (Author) / Muneepeerakul, Rachata (Thesis advisor) / Ruddell, Benjamin (Committee member) / Aggarwal, Rimjhim (Committee member) / Arizona State University (Publisher)
Created2015