Modelling rhizomania in sugar beet

Abstract

With love and gratitude to my parents, for all their advice and encouragement. Acknowledgements I would like to express my sincere gratitude to Dr. Fowler, for his help and guidance as my supervisor for this dissertation. I would also like to thank Dr. Howison for his support as my supervisor during the earlier part of the year, and Dr. Gilligan and Dr. Truscott for the invaluable discussions. I would like to thank the OCIAM Industrial Fund for funding me this year, and Lincoln College for the delicious food and comfortable accom-modation. My thanks go to Keith Gillow, who has always been helpful with queries about LATEX, and all the sta in the Mathematical Institute and Comput-ing Laboratory. I am very grateful to my parents and brother for their continuing guidanc