Biofortified orange-fleshed sweetpotato (OFSP) is being promoted to tackle vitamin A deficiency, a serious public health problem affecting children and pregnant/lactating women in sub-Saharan Africa. The aim of the study was to quantify and understand the factors influencing car…
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Law and State, especially forms of landed property and contract, have played an important mediatory role in the internationalisation of agricultural capital in Ghana. The establishment of cocoa production in Ghana in the late nineteenth and the early part of the twentieth centur…
The use of peri-urban fenlands for agriculture usmg urban waste as manorial treatments is increasingly common worldwide, particularly in developing countries. The risk to human health from the use of these contaminated materials for crop production has been studied using two his…
The research demonstrates that Three-Dimensional Variable-Density Groundwater Flow models such as the SEAWAT model can be effectively used for design of subsurface drainage systems for controlling salt concentration in the root zone on salt affected irrigated land. The SEAWAT mo…
Soil is one of the most complex ecosystems in the environment and changes to microbial diversity are thought to affect the physical structure (and vice versa). A fundamental question addressed in this research, is how microbial communities influence the functioning of soil, part…
This thesis examines the role and use of indigenous knowledge within small-scale agricultural systems in Africa and its relevance in development practice and theory. Using development programmes that have been implemented in the study area from the colonial to the recent times, …
One of the greatest proximate threats facing biodiversity is habitat change as a result of the combined effects of agricultural development and livestock grazing. Extensive livestock systems are increasingly competing with wildlife for access to land and natural resources in Afr…
Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) is an invasive worldwide pest of many agricultural, horticultural and ornamental crops. They are difficult to control because of their small size and high resistance to chemical insecticides. The aggregation pheromo…
Agricultural cooperatives (ACs) are major players in the European Union, where they account for 40-60% of agricultural trade and thus are key actors in articulating rural realities and in shaping the sustainability credentials of European food and farming. Cooperatives, regardle…
Estimating the size of an insect pest population in an agricultural field is an integral part of insect pest monitoring. An abundance estimate can be used to decide if action is needed to bring the population size under control, and accuracy is important in ensuring that the cor…
Upland heather moorland is often subjected to wildfires, particularly in drought years, which destroy all vegetation, seed bank and surface peat. Post-fire management of liming, fertilising and seeding with grass species and Calluna vulgaris (ling heather), in addition to natura…
Technology and innovation pervade all aspects of modern life. In past decades, technological innovations have changed the poultry industry from what was once a small-scale back yard operation to industrialised intensive mass production farming. In Iran, technology transfer has h…
This thesis develops a participatory modelling process to study improvement in the management of irrigation efficiency, including physical and social dimensions in the context of arid and semi-arid regions of Iran. This study develops an interdisciplinary and participatory metho…
The thesis studies the political participation of Thai farmers and focuses on two main factors, namely the domestic and the external impacts, which inform the case studies of rice, sugarcane, and potato farmers groups. Overall, the research has established that farmers groups ha…
The objective of this research was to "investigate, study, analyse, and report conditions under which Syrian "rainfed" wheat farmers live interact and adopt innovations and improved cropping practices. The purpose of this was to help in understanding forces that can influence fa…
Data Envelopment Analysis (DEA) is a well-established relative efficiency measurement technique, which has been widely applied to evaluate the technical efficiency of agricultural units in different countries by focusing on different aspects of agricultural production. This rese…
Public policy regarding innovation in the Canadian value-added agri-food sector does not appear to meet its intended outcomes. Rather than being a commodity producing nation, Canada has attempted to focus its attention on adding value to products that increase economic returns. …
The distribution and extent of detached gardens in a sample of 10 English provincial towns was examined for the 18th century, through cartographic analysis and the construction of GIS-generated zones parallel to the urban fence. This revealed that detached gardens formed a disti…