京都大学 / 新制・論文博士 / 博士(地球環境学) / 乙第13493号 / 論地環博第16号 / 新制||地環||44(附属図書館) / 京都大学大学院地球環境学舎地球環境学専攻 / (主査)教授 舟川 晋也, 教授 西前 出, 准教授 真常 仁志, 教授 樋口 浩和 / 学位規則第4条第2項該当 / Doctor of Global Environmental Studies / Kyoto University / DFAM

Cash crops such as coffee, cotton, and tea have been an important income for farmers especially smallholder farmers in the Sub-Sahara Africa (SSA). However, many farmers started to turn in to new cash crops with higher market prices. Vanilla (planifolia) is one of such alternative cash crops which has been attracting more and more smallholder farmers in Tanzania in the past three decades. This study explored vanilla and its sustainability in Tanzania using a Sustainability Opportunity Study (SOS) approach. The aim of this study is to research whether vanilla could bring new opportunities on poverty reduction for smallholders in the SSA. The thesis selected Kagera region in Tanzania as the case study area for being the first and leading vanilla production region in the country. Key stakeholders and their sustainable impacts such as the farmers’ cooperative Maendeleo Ya Wakulima (Mayawa) have been identified. Sustainable vanilla production in Tanzania is defined as generating maximal economic profits for the main stakeholders with minimal harm to the society and the environment. Results illustrate that vanilla is beneficial for smallholder farmers in many ways. However, it is currently not sustainable with a huge gap between the current performance and potential performance for key stakeholders. Both smallholder farmers and Mayawa have the improvement potentials for more income. The opportunity is there but with several serious challenges such as price fluctuations, climate change, smuggling, lacking stable market, and so on. Vanilla farmers cannot stop farming vanilla even when facing an unstable market. This study suggests that smallholder farmers and Mayawa must work together for a sustainable development of vanilla production in Tanzania.

The study examines the contestations and conflicts over land access between smallholder settler farmers and nomadic cattle herders in the Kwahu Afram Plains South District. Current studies on the farmer-herder conflict in Ghana have emphasised the conflict between indigenous farmers and nomadic herders. This study has contributed to existing knowledge by highlighting the conflict between two migrant groups. As migrants, both settler farmers and nomadic herders are renting land and, in the process, come into conflict. The tension in the area is that both migrant groups have no ownership of land, which exposes their vulnerability to the landowners in the sense that they have no firm land rights. The study's main objective is to examine the root causes of the conflict between crop farmers and nomadic herders in the case study area of the Afram Plains. The environmental scarcity and political ecology theories were utilised to analyse the conflict in the study area. The study adopted the qualitative approach with the purposive and snowball sampling methods used to select participants for the research. The study's findings reveal that increasing land scarcity due to population growth, climate-induced migration, and large-scale land acquisition is a major cause of the land conflict. The study further reveals that, aside from the core issues leading to land scarcity, what instantly ignites conflict between farmers and herders includes crop destruction, burning of grasses, and alleged vices perpetrated by the herders. The findings of the study also reveal that the mitigation measures put in place to address the conflict have been ineffective because of corruption, poor land governance, and greedy chiefs. The study concludes that the farmer-herder conflict is complex and needs to be examined from diverse perspectives to appreciate the nuances of the conflict.

The research draws on an ethnographic research and explores the everyday practice of collective action in Ugbawka in Enugu State by using interviews and participant observation. The study reveals that smallholder collective action is not best fitted into formal institutional arrangement but takes place within a complex and intricate process that involves interaction with diversity of institutions and actors. Equally, the interactions that occur amongst actors are mediated at the community level through interplay of socio-cultural and political factors. This study recognises and places emphasis on understanding of agency and the exercise of agency at the local level arguing that smallholder farmers are not robot but active individual who exercise their agency purposively or impulsively depending on conditions and the assets available at their disposition as well as their ability to navigate the intricate power dynamic inherent at local context. The thesis thus questioned the simplistic use of formal institutional collective action framework in smallholder collective action at the community level and argues that institutions are not static and do not determine outcomes but are informed by the prevailing conditions at the community level. The study emphasises the role of existing institutions and socially embedded principles in community governance and argues that actors should be the focus of analysis rather than the system in understanding smallholder collective action. The study concludes by advocating for further research that could explore the possibility of hybrid approach that accepts the advantages of both formal and informal institutional forms of smallholder collective action.

The new philanthropy is increasingly seen as a panacea and an alternative source of global development finance for rural development, especially in developing countries. The theoretical underpinning of the new philanthropy entails the idea that the private sector, led by philanthropists and civil society organisations in social policy issues can lead to more effective outcomes through partnership. The existing literature on the new philanthropy mainly focuses on its economic or commercial impact. This is particularly the case in the rural parts of Ghana; there has been very little research on the new philanthropy’s impact on the livelihoods of the poorest segments of society. Therefore, this research investigates the impact of new philanthropy on the livelihoods of smallholder farmers in Northern Ghana in order to fill the gap. The study employed ethnographic research, utilising qualitative techniques involving 20 stakeholders in philanthropy and livelihood affairs and 100 smallholder farmers. The research findings suggest that there is a significant relationship between philanthropic sponsored interventions in Ghana and an increase in smallholder farmers’ yields. The few farmers who purchased improved seeds and other agricultural inputs registered significant increases. However, this study identified some bottlenecks inhibiting access to agricultural inputs by smallholder farmers. Majority of smallholder farmers revealed that they could not afford them (seeds, chemical fertilizer and other inputs) despite the subsidies. Furthermore, rainfall variability gives rise to fluctuating food production from one season to another; meanwhile, there is a lack of strategy from philanthropic practitioners to address the variability in rainfall. Through philanthropy, other methods of faming such as irrigation farming agroecology, and permaculture could be exploited to the benefits of smallholder farmers. The outcomes of this study have policy implications for philanthropic practitioners. This study shows that the failure to involve farmers directly in decisions that affect their livelihoods is a major cause of livelihood interventionist programme failures in Ghana. Thus, this study argues that understanding the socioeconomic dynamics in the Northern Region and amongst the farmers should be an important part of policy formulation for philanthropic involvements seeking to improve livelihood of smallholder farmers. Lastly, the study called for a separate policy framework for philanthropy that would have a key objective of mobilising private philanthropic resources to support steady economic growth and sustainable development, dealing directly with recipients. / Government of Ghana.

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Master of Agribusiness / Department of Agricultural Economics / Vincent Amanor-Boadu / As the dairy industry faces the future, consumers’ demand for better milk quality and safety is increasing. Milk quality is of major interest to both consumers and dairy farmers alike. However, scientific data on milk quality in terms of somatic cell count (SCC) in Uganda and most developing countries has been lacking. This study used SCC to compare Southwestern Uganda’s milk quality against international standards. The study also sought to assess dairy farmers’ perceptions about milk quality. Milk samples were obtained from 100 farms in Mbarara and Kiruhura districts, the major cattle corridor in Uganda. The milk’s SCC was analyzed using a DeLaval DCC. A structured questionnaire surveyed farmers on milking procedures and milk-quality perception. Descriptive statistics and qualitative analysis was used to characterize and compare milk quality against the international benchmark. The study found that the 100 farms had an average SCC of 507,000 cells/ml. About 34% of farms in the study had SCC under 200,000 cells/ml, an indication of high-quality milk. Excluding 7% of the farms with SCC over 1,000,000 cells/ml, the remaining 93% had an average SCC of 276,000 cells/ml, a level comparable to international standards, well below the EU threshold of 400,000. The study also revealed that 98% of farmers considered milk quality as important or very important both to them and to the milk buyers. However, all farmers reported that they currently do not receive a milk-quality premium and are not penalized for poor quality. Seventy-nine percent of farmers reported the cooperative they belong to as their main source of information on management practices. An improved perception of milk quality both domestically and internationally will benefit Uganda’s dairy farmers and its dairy industry at large. Consumers must be assured that Uganda’s dairy industry, its government, industry stakeholders such as the Dairy Development Authority, the Uganda National Bureau of Standards, and the private sector place the utmost importance on the quality and safety of milk and other dairy products. New technologies to measure for SCC and strict food safety regulations will help improve the country’s milk-quality image, allowing Uganda’s dairy industry to tap into major milk export markets. Most developed countries have seen increased raw-milk quality or reduced SCC as a result of strong regulatory pressure.

This study examines rural household food security and its determinants in drought-prone Amhara Region of Ethiopia by focusing on Lay Gaint district as a case study site. A range of factors from physical environmental circumstances to policy and institutions-related issues determine households‟ vulnerability to food insecurity and livelihood outcomes. The survey results showed that the majority (74%) of the sampled households experienced food insecurity. The situation was worse among female-headed households such that 86% of them were food insecure. The study revealed that, despite the low level of productivity related to local environmental constraints, rural livelihoods remain undiversified with small scale rain-fed agriculture to provide the primary source of livelihood for the large majority of households (~93% of respondents). Only about 25% of the respondents participated in some form of non-farm or off-farm activities, but with only little contribution to their total annual incomes. Food insecurity is a chronic problem in that, on average, households in the study area consume from own production for only about six months. The study found out that the majority of households (about 80%) perceived annual rainfall to be inadequate to support the growing of crops and grazing of animals. The main adaptive strategies employed by the majority of households included diversifying livestock kept, planting trees and diversifying crops. The study revealed that incidence, depth and severity of food insecurity of the food insecure households showed that Woina-Dega and Kolla agro-ecologies are prone to vulnerability to food insecurity. This suggests that development interventions that are geographically differentiated; and build household assets will improve household food security in the study area, and in other similar environments in the country. / Geography

This study examines rural household food security and its determinants in drought-prone Amhara Region of Ethiopia by focusing on Lay Gaint district as a case study site. A range of factors from physical environmental circumstances to policy and institutions-related issues determine households‟ vulnerability to food insecurity and livelihood outcomes. The survey results showed that the majority (74%) of the sampled households experienced food insecurity. The situation was worse among female-headed households such that 86% of them were food insecure. The study revealed that, despite the low level of productivity related to local environmental constraints, rural livelihoods remain undiversified with small scale rain-fed agriculture to provide the primary source of livelihood for the large majority of households (~93% of respondents). Only about 25% of the respondents participated in some form of non-farm or off-farm activities, but with only little contribution to their total annual incomes. Food insecurity is a chronic problem in that, on average, households in the study area consume from own production for only about six months. The study found out that the majority of households (about 80%) perceived annual rainfall to be inadequate to support the growing of crops and grazing of animals. The main adaptive strategies employed by the majority of households included diversifying livestock kept, planting trees and diversifying crops. The study revealed that incidence, depth and severity of food insecurity of the food insecure households showed that Woina-Dega and Kolla agro-ecologies are prone to vulnerability to food insecurity. This suggests that development interventions that are geographically differentiated; and build household assets will improve household food security in the study area, and in other similar environments in the country. / Geography