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Essays On Malawian Agriculture: Micro-Level Welfare Impacts Of Agricultural Productivity; Profitability Of Fertilizer Use; And Targeting Of Fertilizer Subsidy Programs, Francis Addeah Darko
Essays On Malawian Agriculture: Micro-Level Welfare Impacts Of Agricultural Productivity; Profitability Of Fertilizer Use; And Targeting Of Fertilizer Subsidy Programs, Francis Addeah Darko
Open Access Dissertations
This dissertation comprises of three essays that address different aspects of agriculture in Malawi using a two-wave panel data collected by the National Statistical Office of Malawi with support from the World Bank Living Standards Measurement Study – Integrated Surveys on Agriculture (LSMS-ISA) program. Each essay stands alone as an independent study because of differences in research questions and the methodologies used in addressing the questions.
The first essay analyzes the micro-level welfare impacts of agricultural productivity. Welfare is measured by various dimensions of poverty and food insecurity; and agricultural productivity is measured by maize yield and value of crop …
Evaluating The Two-Stage Ditch As A New Best Management Practice, Andi Hodaj
Evaluating The Two-Stage Ditch As A New Best Management Practice, Andi Hodaj
Open Access Dissertations
A two-stage ditch involves modifications of a traditional drainage ditch to resemble more the features of a natural stream. The idea is to create or simulate extended benches on both sides of the ditch that would develop naturally over a period of time in a stream because of geomorphological processes. Previous research in Indiana and Ohio has shown that two-stage ditches offer the potential to reduce sediment load and extend the interaction time between water and vegetation on the benches allowing larger uptake of nutrients from the vegetation on the extended benches, and increasing the denitrification rates in the bench …
High School Students' Motivations And Views Of Agriculture And Agricultural Careers Upon Completion Of A Pre-College Program, Andrea K. Scherer
High School Students' Motivations And Views Of Agriculture And Agricultural Careers Upon Completion Of A Pre-College Program, Andrea K. Scherer
Open Access Theses
Pre-college summer residential experiences hosted by a College of Agriculture have the potential to expose high school students to new career opportunities and fields of study that they may not have considered, and may influence agricultural literacy, perceptions of agriculture, and interest in agriculture. Engaging these students is important for meeting the demand for more students graduating with agriculture degrees prepared to solve 21st century challenges. The purpose of this study was to explore and describe the outcomes of two separate pre-college experiences, the Molecular Agriculture Summer Institute (MASI) and the Purdue Agribusiness Science Academy (PASA), and participating high school …
Crop Modeling For Assessing And Mitigating The Impacts Of Extreme Climatic Events On The Us Agriculture System, Zhenong Jin
Crop Modeling For Assessing And Mitigating The Impacts Of Extreme Climatic Events On The Us Agriculture System, Zhenong Jin
Open Access Dissertations
The US agriculture system is the world’s largest producer of maize and soybean, and typically supplies more than one-third of their global trading. Nearly 90% of the US maize and soybean production is rainfed, thus is susceptible to climate change stressors such as heat waves and droughts. Process-based crop and cropping system models are important tools for climate change impact assessments and risk management. As data- science is becoming a new frontier for agriculture growth, the incoming decade calls for operational platforms that use hyper-local growth monitoring, high-resolution real-time weather and satellite data assimilation and cropping system modeling to help …
Investigation Of An Affordable Multigrain Thresher For Smallholder Farmers In Sub-Saharan Africa, David D. Wilson
Investigation Of An Affordable Multigrain Thresher For Smallholder Farmers In Sub-Saharan Africa, David D. Wilson
Open Access Theses
As the global population rises, food security is among the most important grand challenges of our time. While agriculture has significantly developed in parts of the world, other parts are severely underdeveloped, inhibiting agriculture productivity, which is a necessary component of the solution to the food security challenge. Sub-Saharan Africa (SSA), in particular, has seen little growth in productivity, something that has been correlated to its low agricultural mechanization. One barrier to mechanization in SSA, where the average farm size is less than 2 Ha, is the cost of farm equipment. This leaves many farmers with just basic tools to …
Using Energy-Efficient Technologies To Produce Bedding Plants And Microgreens In Protected And Controlled Environments, Joshua R. Gerovac
Using Energy-Efficient Technologies To Produce Bedding Plants And Microgreens In Protected And Controlled Environments, Joshua R. Gerovac
Open Access Theses
Gerovac, Joshua R. M.S., Purdue University, December 2014. Using Energy-Efficient Technologies to Produce Bedding Plants and Microgreens in Protected and Controlled Environments. Major Professor: Roberto G. Lopez. Production of bedding plants in commercial greenhouses (GHs) located in northern latitudes begins in late winter and continues through late spring when low outdoor temperatures generally necessitate active heating to maintain temperatures suitable for growth and development. Meanwhile, year-round production of microgreens using multi-layer systems requires sole-source (SS) photosynthetic lighting for production. Energy used to provide active heating in commercial GHs or SS lighting in multi-layer systems is second only to labor as …
How Population Density Influences Agricultural Intensification And Productivity: Evidence From Ethiopia, Anna Leigh Josephson
How Population Density Influences Agricultural Intensification And Productivity: Evidence From Ethiopia, Anna Leigh Josephson
Open Access Theses
We use household-level panel data to estimate how population density impacts agricultural intensification and farm income in Ethiopia. We hypothesize that increases in population density affect agricultural intensification and farm income directly through information flows, institutional development, and reduction in transactions costs. Increases in population density also affect agricultural intensification and farm income indirectly through farm size, agricultural wage rates, and staple crop prices. We find that increases in population density lead to lower farm sizes, which has major implications for agricultural intensification and household well-being. Our analysis indicates that increases in population density cause farmers to purchase more inorganic …