Life Sciences Commons^™

Going The Distance: Examining The Impact Of A Long-Term International Fellowship, Meikah Dado, Jessica R. Spence, Jack Elliot

Journal of International Agricultural and Extension Education

AgriCorps, an American organization, created a fellowship program to connect agricultural professionals to school-based agricultural education in developing countries. Previous scholars researched the impacts of international experiences on learners, usually through the lens of short-term study abroad. This study seeks to examine the impact of long-term international fellowship experiences in education and provide recommendations for future like-programs by analyzing the experiences of previous AgriCorps fellows. Fellows lived and taught school-based agricultural education in a community in Ghana or Liberia. Eighteen previous AgriCorps fellows participated in a semi-structured interview through a virtual meeting platform. The interviews were used to collect data …

Evaluation Of The Toxic Effects Of Aqueous Extracts Of Solanum Nigrum L.( Solanaceae ) On The Mortality And Development Of Drosophila Melanogaster (Diptera : Drosophilidae)., Makarem Rahat, Sara Habbachi, Ibtissem Samai, Wafa Habbachi, Abir Bouzar, Saliha Benhissen, Abdelkrim Tahraoui

Journal of Bioresource Management

Solanum nigrum is a plant that has therapeutic properties of the Solanaceae family. It is used extensively in traditional medicine but also as a bio-insecticide to control insect pests. Some parts of this plant can be very toxic to livestock and humans. In the present study, the direct and delayed toxic effects of aqueous extracts of S. nigrum on the mortality and development of Drosophila melanogaster were investigated. For this study, an extraction method including decoction is adopted to extract the active principles from the leaves of S. nigrum. The treatment was carried out by ingestion on 2nd instar …

Ranking The Counties In Ease Azarbaijan-Iran Based On Agriculture Development Criteria Using Copras Model, Razieh Pourdarbani, Asghar Pashazadeh

Emirates Journal for Engineering Research

Understanding inequality and imbalances within different geographical areas (country, province and city), and policymaking to reduce inequalities are among the key tasks of the administrators in geographical development sector. Therefore, it is necessary to identify level of development and underdevelopment of agricultural areas in order to achieve sustainable agricultural development. A list of 36 indices including 10 agronomic indices, 7 horticultural indices, 8 livestock indices and 11 mechanization indices was prepared using Statistical Yearbook of 2016. The agricultural ranking of 21 counties was made using the Copras model. Also counties clustered using cluster analysis method included in SPSS software and …

Determinants Of Female Bargaining Power In Northern Mozambican Households, Sara Marilyn Gardner

Agricultural Economics and Agribusiness Undergraduate Honors Theses

Melinda Gates stated, “If you search for poverty, you will find women who don’t have power. If you explore prosperity, you will find women who do have power and use it.” Throughout Sub-Saharan Africa, women are expected to perform disproportional amounts of labor but are often ignored in household decision-making regarding social and economic matters. The United Nations Development Program (UNDP) states that women in Mozambique are highly disadvantaged, relative to men, due to low levels of education, maternal health risks, restricted economic prospects, and cultural norms. This study aims to better understand the causes of female empowerment in Northern …

Agritourism Development In Southwest Michigan: Motivations Of Agritourists And Operators, Esther Akoto Amoako

Masters Theses

National agricultural statistics show that the number of agritourism farms and the proportion of agritourism related revenues in the United States has steadily increased during the last ten years, especially among small family farms. The recent growth in agritourism is both demand - and supply-driven. However, there are limited studies that explore agritourism motivations from both the visitors' and operators’ perspectives. This study examines what the agritourists' and operators’ motivations are and the challenges facing the industry to provide information for those currently involved and those wanting to include agritourism in their operations. Online and in-person surveys and unstructured interviews …

The Cyst Nematode Heterodera Latipons Franklin, 1969 (Nemata: Heteroderidae): Hatching Behavior And Development On Wheat In Arid And Semiarid Regions In Turkey, Mustafa İmren

Turkish Journal of Agriculture and Forestry

The cyst nematode Heterodera latipons Franklin, 1969 (Nemata: Heteroderidae) is an economically important sedentary plant-parasitic nematode which limits the production of cereal crops around the world. It is an important pest on wheat and can be found globally in different growing areas, especially in the Mediterranean region. Developing an understanding of its physiological behavior (senescence, quiescence, and cryptobiosis), development [second-stage juveniles (J2) and immature and mature females], and population dynamics under field conditions is needed to create an appropriate control strategy. The experiments were conducted at Karaisalı, a semiarid region in Adana Province, and at Derik, an arid region in …

Toward Effective Rural Community Development In Black Belt Counties: Conceptual And Methodological Issues, Andrew Zekeri

Professional Agricultural Workers Journal

Abstract

The objectives of this paper are to (1) specify what “rural”, “community”, and “development” mean, and (2) what should be the essential steps to be taken to achieve an effective rural community development. Rural is a territorial concept, and it means an extent of dispersion of people in a local ecology. Community is a natural disposition among people who interact with one another on different matters that compromise a common life. Development is an organized intentional effort of local people to work together towards a shared goal. Community development is building the capacity of community residents to act effectively …

The Survival Of Mediterranean Fruit Fly (Diptera: Tephritidae) Over Winter In Western Australia, Touhidur Rahman, Sonya Broughton

Biosecurity Research Articles

The Mediterranean fruit fly, Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) is one of the most economically important pest insects of fruit crops worldwide. Mediterranean fruit fly can cause up to 100% crop loss in susceptible fruit. In order to formulate best management practices, it is critical to understand how Mediterranean fruit fly overwinters in a given geographical location and bridge the gap between autumn and spring populations. In this study, we evaluated the overwintering potential of Mediterranean fruit fly immature and adult stages in two locations in Perth Hills, Western Australia. We also monitored wild adult Mediterranean fruit fly populations for …

The Battle Of The Powers: Newly Obtained Benefits From The Revitilised Trans-Pacific Partnership Agreement, Scott Halsted

Master's Projects and Capstones

The Trans Pacific Partnership (TPP) agreement would have been the most sizeable free trade agreement in history. The agreement was set up by the Obama administration as an economic benefactor plus geopolitical tool to maintain the balance of power in the Asia Pacific region, rivaling the power of China. However, numerous politicians within the Trump administration, plus multiple political opposers including Hillary Clinton and Sen. Bernie Sanders, were major advocates for the U.S. removal after realistically adjusted estimates of the TPP showed economic benefits not equating to original estimates. However, the United States withdrawal raises significant successes that can be …

Newsroom: From Farm To School 1-2-2018, Roger Williams University School Of Law

Life of the Law School (1993- )

No abstract provided.

Cattle As Technological Interventions: The Gender Effects Of Water Demand In Dairy Production In Uganda, Elizabeth Ransom, Carmen Bain, Harleen Bal, Natasha Shannon

Sociology and Anthropology Faculty Publications

Smallholder dairy production dominates the country of Uganda, with over 90% of the national herd owned by smallholders. To reduce hunger, malnutrition, and raise families out of poverty agricultural development, interventions in Uganda have focused on increasing milk production through the introduction of improved dairy cow breeds. Development actors, such as the East Africa Dairy Development (EADD) program in Uganda, see crossbreed dairy cows as a key technological intervention for improving production. Drawing on a multi-method study (spatial analysis, surveys, and qualitative interviews) of dairy smallholders, our paper examines the gendered effects of the introduction of crossbreed dairy cows. To …

Farmstead Planning: Old Farm Buildings Repurposed For Better Farming: How To Develop A Complex, Stephen F. Higgins, Lee Moser

Agriculture and Natural Resources Publications

Farming is probably one of the most complex means of earning a living that has been devised. The many components of a farming operation that have to be managed would create an extensive list. Many beef cattle producers might focus on reproduction, nutrition, forages, health, and handling. However, there are many others operational considerations that are just as important.

The C-Terminal Motif Of Siago1b Is Required For The Regulation Of Growth, Development And Stress Responses In Foxtail Millet (Setaria Italica (L.) P. Beauv), Xiaotong Liu, Sha Tang, Guanqing Jia, James C. Schnable, Haixia Su, Chanjuan Tang, Hui Zhi, Xianmin Diao

Department of Agronomy and Horticulture: Faculty Publications

Foxtail millet (Setaria italica (L.) P. Beauv), which belongs to the Panicoideae tribe of the Poaceae, is an important grain crop widely grown in Northern China and India. It is currently developing into a novel model species for functional genomics of the Panicoideae as a result of its fully available reference genome sequence, small diploid genome (2n=18, ~510 Mb), short life cycle, small stature and prolific seed production. Argonaute 1 (AGO1), belonging to the argonaute (AGO) protein family, recruits small RNAs and regulates plant growth and development. Here, we characterized an AGO1 mutant (siago1b) in foxtail millet, which …

Effects Of The Developmental Environment On Oxidative Damage And Antioxidants In Red-Eared Slider Turtle ( Trachemys Scripta Elegans ) Hatchlings, Lisa Allison Treidel

Theses and Dissertations

Developmental environments influence many individual phenotypes. However, currently we have a limited understanding of how the developmental environment influences oxidative stress resistance phenotypes. Oxidative stress is defined as a physiological state during which the production of harmful free radicals exceeds the protective capabilities of antioxidants. Variations among adults in susceptibility to oxidative stress can have important consequences for life history strategies and fitness related traits. Our work was aimed at providing insight in to the role that the developmental environment plays on oxidative stress phenotypes in the model oviparous reptile the red-eared slider turtle (Trachemys scripta elegans). Here, we conducted …

Can Peers Improve Agricultural Revenue?, Tisorn Songsermsawas, Kathy Baylis, Ashwini Chhatre, Hope Michelson

Kathy Baylis

Crop revenues vary greatly among farmers and the source of that variation is not fully understood. Using a household survey from India, we estimate peer effects on cash crop revenue. Results show that 60% of farmers' revenue can be explained by peers. Peer effects in input expenditure and land allocation cannot fully explain the variation in revenue, implying peers may also associate with management, negotiation and marketing strategies. Although caste-based networks are important, their effect is substantially smaller than that of self-reported peers. Peer effects are strongest for agricultural peers and in the cultivation of a new crop.

Phylogeny And Population Genetics Of The Endangered Dwarf Bear-Poppy, Arctomecon Humilis Coville (Papaveraceae) Using Microsatellite Markers, Joshua Simpson

Dissertations, Theses, and Capstone Projects

The genus Arctomecon (Papaveraceae) is comprised of three narrowly endemic rare species that are largely restricted to gypsum soils of the eastern Mojave Desert. The small, remaining populations of these species have become increasingly isolated by urban development and habitat fragmentation. Arctomecon humilis is federally listed as endangered due to its limited distribution within a ~15 km radius of an actively expanding city. Organizations involved with land management and conservation have called for greater insight into the genetic variation and population structure of the remaining subpopulations as they make important decisions regarding where to focus their efforts and resources.

The …

Beyond Climate-Smart Agriculture: Toward Safe Operating Spaces For Global Food Systems, Henry Neufeldt, Molly Jahn, Bruce M. Campbell, John R. Beddington, Fabrice Declerck, Alessandro De Pinto, Jay Gulledge, Jonathan Hellin, Mario Herrero, Andy Jarvis, David Lezaks, Holger Meinke, Todd Rosenstock, Mary Scholes, Robert Scholes, Sonja Vermeulen, Eva Wollenberg, Robert Zougmoré

Rubenstein School of Environment and Natural Resources Faculty Publications

Agriculture is considered to be "climate-smart" when it contributes to increasing food security, adaptation and mitigation in a sustainable way. This new concept now dominates current discussions in agricultural development because of its capacity to unite the agendas of the agriculture, development and climate change communities under one brand. In this opinion piece authored by scientists from a variety of international agricultural and climate research communities, we argue that the concept needs to be evaluated critically because the relationship between the three dimensions is poorly understood, such that practically any improved agricultural practice can be considered climate-smart. This lack of …

Agricultural Development In The Northern Savannah Of Ghana, Tara N. Wood

Doctor of Plant Health Program: Dissertations and Student Research

Since declaring independence in 1957, the Republic of Ghana has become a stable constitutional democracy. Ghana’s economy has grown substantially over the past decade, yet remains primarily agrarian, accounting for 50% of the total employment and 25% of the country’s Gross Domestic Product. Smallholder rain-fed farming using rudimentary technologies dominates the agricultural sector accounting for 80% of total agricultural production. Approximately 90% of smallholder farms are less than two hectares in size, and produce a diversity of crops. The major crops cultivated in Ghana include numerous cereal, root and tuber, leguminous, fruit, vegetable and industrial crops. Maize is the most …

Nutritional And Economic Analysis Of Small-Scale Agriculture In Imbabura, Ecuador, Jake Erickson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Intervention projects in the developing world normally aim to satisfy either the nutritional needs of a group, or advancing the economic stability, but not both. One of the many issues that may arise by narrowly focusing and creating an aid program is that although a group may be fed, they are not equipped to mitigate risks that will arise after project completion and thus continue or revert back to a malnourished state. A bridge is required to join the economic and nutritional programs to create aid interventions that are sustainable past the point of donor separation.

This paper proposes the …

Seedling Root Morphology Of Six Alfalfa Populations, Brianna J. Gaughan

The Journal of Undergraduate Research

Seedling root morphology plays a crucial role in seedling survival and stand establishment. Naturalized yellow-flowered alfalfa (YFA) (Medicago sativa subsp. falcata) has demonstrated adaptation to semiarid conditions of the Northern Great Plains and tolerance to grazing. Seedling stage root morphology is poorly defined. Our objective was to compare morphological traits of seedling roots for six alfalfa populations. Six entries were evaluated: one M. sativa population as a control, two M. falcata entries, with reported “spreading characteristics” and three naturalized YFA populations. Uniform seeds of each entry were scarified with 320 grade sand paper and inoculated with rhizobium before planting. A …

Development Of Functional Indices Of Facility Occurrence Towards The Distribution Of Social Services In Lagos Island Nigeria., Augustus O. Atubi

Confluence Journal Environmental Studies (CJES), Kogi State University, Nigeria

Proper coordination of transport and public facilities provision is vital to any balanced regional development strategy. The central aim of this study, therefore, is to find out what the relationship is between access to the transport network and the provision of functional indices of facility occurrence towards the distribution of social services in Lagos Island, Nigeria. In particular it seeks to find out areas that have below or above average level of facility occurrences relative to the level of accessibility. However, a pair wise correlation matrix of the eleven (11) variables employed in the index construction was carried out. The …

Temperature Dependent Development Of The Egg-Larval Parasitoid Chelonus Oculator On The Factitious Host, Ephestia Cautella, Hi̇lal Tunca, Cem Özkan, Ahmet Neşet Kilinçer

Turkish Journal of Agriculture and Forestry

Development, fecundity, and longevity of the egg-larval parasitoid Chelonus oculator Panzer (Hymenoptera: Braconidae) were studied on the factitious host, Ephestia cautella (Walker) (Lepidoptera: Pyralidae) at 4 different temperatures (15 °C, 20 °C, 25 °C, and 30 °C). Developmental time from egg to adult was inversely related to temperature. Egg to adult development time ranged from 188 days at 15 °C to 28 days at 30 °C. Complete development required 489 degree-days with a developmental threshold of 12.5 °C. Adult male and female longevity ranged from 43 days at 20 °C to 17 days at 30 °C. Maximum production of offspring …

Hedging To Safety: A Political Economy Of Derivatives, Risk And Agriculture In The Developing World, Sasha Coler Breger Bush

Electronic Theses and Dissertations

It has become common for researchers and international development institutions to recommend the use of derivative instruments to developing country farmers and policymakers as a means of insuring agricultural incomes against the threats posed by volatile global commodity prices. Despite such enthusiasm, very little research to date examines whether or not derivative instruments actually can deliver income support to agricultural producers who face commodity price risk. This dissertation evaluates these recommendations, focusing upon the potential income security benefits of hedging with futures instruments for coffee farmers in Mexico, Brazil and Uganda during the 1998-2002 coffee crisis. The three-part quantitative and …

Influence Of Temperature On Life Table Parameters Of The Predaceous Mite Euseius Finlandicus (Oudemans) (Acari: Phytoseiidae), İsmai̇l Kasap

Turkish Journal of Agriculture and Forestry

This study determined the differences in development time, survival, and fecundity of Euseius finlandicus (Oudemans) (Acari: Phytoseiidae) when feeding on Tetranychus urticae (Koch) (Acari: Tetranychidae) together with birch pollen at 16, 20, 25, and 30 ± 1 °C, 65 ± 10% RH, and 16:8 photoperiod under laboratory conditions. Total development times for E. finlandicus were 29.48, 18.15, 7.28, and 5.90 days for females and 28.16, 17.54, 7.03, and 5.81 days for males at 16, 20, 25, and 30 ± 1 °C, respectively. Total egg production was highest (30.53 eggs) at 25 °C, whereas daily egg production was highest (1.80 eggs) …

Development, Fecundity, And Prey Consumption Of Neoseiulus Californicus (Mcgregor) Fed Tetranychus Cinnabarinus Boisduval, Oktay Kuştutan, İbrahi̇m Çakmak

Turkish Journal of Agriculture and Forestry

The development, fecundity, and prey consumption of the Aydın Neoseiulus californicus population (McGregor) feeding on Tetranychus cinnabarinus Boisduval were studied in the laboratory at different temperatures, 65 ± 10% RH, and a 16 h L:8 h D cycle. The total development period (egg to adult) decreased linearly with increasing temperature (0.012 × T - 0.093; R^2 = 0.950). The total development threshold obtained from regression analysis was estimated to be 7.8 °C. Neoseiulus californicus required, on average, 83.3 DD to complete its development from egg to adult. Mean total and daily fecundity were highest at 25 °C, and were statistically …

Effect Of Superparasitism On The Development Of The Solitary Parasitoid Chelonus Oculator Panzer (Hymenoptera: Braconidae), Hi̇lal Tunca, Neşet Kilinçer

Turkish Journal of Agriculture and Forestry

The egg-larval parasitoid Chelonus oculator Panzer (Hymenoptera: Braconidae) is a solitary endoparasitoid. The effect of superparasitism on the development of C. oculator was investigated on a host, Cadra cautella Walker (Lepidoptera : Pyralidae) at 25 °C, 60%-70% R.H., and 16:8 h (L:D) photoperiod. The development time of C. oculator from egg to adult was related to parasitism level from 42.5 ± 0.19 days under single parasitism to 48.4 ± 0.57 days under triple parasitism. The emergence rate of the parasitoid decreased as the parasitism level increased. In addition, the dry mass of adult parasitoid was significantly affected by the superparasitism. …

The Biology And Fecundity Of The Citrus Red Mite Panonychus Citri (Mcgregor) (Acari: Tetranychidae) At Different Temperatures Under Laboratory Conditions, İsmai̇l Kasap

Turkish Journal of Agriculture and Forestry

The developmental time and fecundity of Panonychus citri (McGregor 1916) (Acari: Tetranychidae) on Washington navel sweet orange (Citrus sinensis (L.) Osb.) leaves were determined at 15, 20, 25, 30 and 35 ± 1 °C, 65 ± 10% RH, and a 16:8-h (L:D) photoperiod under laboratory conditions. Total development time of P. citri females was 37.2, 16.6, 12.2, 9.8, and 9.0 days at 15, 20, 25, 30, and 35 ± 1 °C, respectively. Total and daily egg production levels of P. citri were highest at 25 °C (25.6 and 2.1 eggs), followed by 20 °C (22.1 and 1.8 eggs) and 30 …

Landscape Scale Correlates Of Fox Squirrel (Sciurus Niger) Presence , Kristin Meehan

All Theses

Although declining throughout the southeast, fox squirrel (Sciurus niger) populations are found on some golf courses in rapidly developing coastal South Carolina. This study used 2001 National Landcover Database data to investigate the relationship between fox squirrel presence on golf courses and landscape-scale habitat features. Results indicated that the best predictor of fox squirrel presence on a course was the presence of a fox squirrel population on the nearest neighbor course, regardless of distance. Course age and the total area of undeveloped features on the course were the best predictors of fox squirrel presence on golf courses without …

Policy Tools For Smart Growth In New England, New England Environmental Finance Center

Smart Growth

Across New England communities have been experiencing a rapid outward surge of development away from our community and downtown centers. Effects of sprawl include a loss of wildlife habitat, farm and timber lands; increased costs of community services and higher taxes; auto-dependency, longer commutes, and increased congestion; increases in air and water pollution; a sedentary lifestyle and increased obesity; and losses to one’s sense of place and social ties.

State-level responses to sprawl have surfaced throughout New England in recent years. This report describes 11 examples of these responses, representing all six New England states and a diversity of recent …

The Growing Together Guide: A Companion Resource To The New England Environmental Finance Center/Melissa Paly Film, New England Environmental Finance Center

Smart Growth

What local leader or public official wants to be faced with an SOS the “same old story” of public discord and confrontation over growth and development in one’s community? That situation has become a problem for efforts to promote smart growth. Investments are needed in the walkable, compact, traditional‐streetscape and mixed use neighborhoods and developments that are more sustainable and healthy than sprawl, for both people and the landscape. Yet attempts at such change all too often end up mired in costly public controversy and stalemate.