Univ., Diss.--Giessen, 2005.

Thesis (Ph. D.)--University of Missouri-Columbia, 1996. / Typescript. Vita. Includes bibliographical references in end segment. Also available on the Internet.

Thesis (Ph. D.)--University of Missouri-Columbia, 1996. / Typescript. Vita. Includes bibliographical references in end segment. Also available on the Internet.

Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references (leaves 123-139). Also available via the Internet.

Thesis (Ph. D.)--University of Wisconsin - Madison, 1990. / Typescript. Vita. Includes bibliographical references (leaves 140-152).

Thesis (D.Agr.Sc.) - University of Queensland, 2004. / Includes bibliographical references.

Thesis (Ph.D.) - University of Queensland, 2005. / Includes bibliography.

Thesis (Ph. D.)--University of Wisconsin--Madison, 2003. / Includes bibliographical references (p. 375-394). Also available on the Internet.

Thesis (M.S.)--University of Oregon, 2006. / Typescript. Includes vita and abstract. Includes bibliographical references (leaves 146 - 153). Also available for download via the World Wide Web; free to University of Oregon users.

The subjection of soils to degradation directly and indirectly from rising world food demand and resultant intensified agricultural production, population growth, and climate change, demand that soils are better protected. The role of AD in addressing this challenge is examined using a pragmatic research paradigm and the questions: How can we raise awareness of AD in the UK? What factors motivate and hinder farmers towards adopting improved technology and sustainable agricultural practises? What is the perception of farmers about soils? To what extent does sustainable agriculture incorporate soil conservation in theory and practice? What role can legislation and policies play in AD adoption in the UK? The research was in two phases; qualitative and quantitative. The qualitative phase involved interviews with 21 AD stakeholder in the UK using electronic mail. The stakeholders who were divided into groups according to their expertise, were interviewed to explore their views on the areas of focus in the UK strategy and action plan regarding raising awareness of the technology, soil conservation, sustainable agriculture and sustainable development. Thematic analysis of interview data was carried out using MAXQDA 11 statistical software. The quantitative phase involved an online survey of 283 UK farmers aided by Yellow Pages directory for UK, Natural England directory, Twitter and electronic mail. Using SPSS 22.0 statistical software, the Chi square test was used to check for relationships between the variables measured at 95% confidence level (p < .05). Relationship strength was measured by means of Cramer’s V and Phi values. Answers to the 1st research question showed that: aligning AD with sustainable development goals, community AD and localism, small AD plants, provision of an available market for AD products, building UK skills and diversifying biogas use from AD are positive options for raising awareness of AD. Response to 2nd research question revealed: significant relationships between interests in agricultural technology and gender, level of education, and farm size; between knowledge of what AD is and gender, level of education and farm size; between interest in AD and age; between willingness to invest in AD if it improved soil properties and farm ownership; and between organic farming practice and age, farm type and farm size. Responding to the third research question, farmers’ describe soils in abstract, scientific, physical attribute and functional terms; awareness of soil benefits other than crop production was significantly related to age, and farm ownership; educational level was significantly related to familiarity with soil conservation, and opinion on whether soil should be protected like other natural resources. Findings regarding the 4th and 5th research questions showed: limited understanding of soil matters as a key challenge that has restricted the priority given to soil conservation, while level of education, knowledge of soil conservation and sustainable development and understanding of sustainable agriculture were also identified as influencing factors; digestate from AD is the main benefit viewed to contribute to soil conservation; finance, policy and legislation, low awareness and understanding, lack of feedstock and market, land use conflict and inefficiency of AD plants were identified as barriers to AD in the UK; promoting AD, providing finance, minimizing bureaucracy and simplification of AD systems are options for promoting AD adoption. This thesis also documents the implications of these findings for knowledge, policy and practice, and based on these recommendations are made, some of which are: better engagement of farmers in policy development for AD and soil management; use of small AD plants, demonstration, networking and training for AD adoption; promote soil conservation in theory and practice; and provision of enhanced support for owners, potential investors and farmers through incentives, simplified planning approval process, and available market for AD product.