Investigations on possibilities to improve the antiphytopathological potential of soils against the cyst nematode Heterodera schachtii and the citrus nematode Tylenchulus semipenetrans [Elektronische Ressource] / von Hazem Abdelnabby

Investigations on possibilities to improve the antiphytopathological potential of soils against the cyst nematode Heterodera schachtii and the citrus nematode Tylenchulus semipenetrans Von der Fakultät für Lebenswissenschaften der Technischen Universität Carolo-Wilhelmina zu Braunschweig zur Erlangung des Grades eines Doktors der Naturwissenschaften (Dr. rer. nat.) genehmigte D i s s e r t a t i o n von Hazem Abdelnabby aus Qaliubiya, Egypt 1. Referent : Prof. Dr. Dr. Ewald Schnug 2. : Prof. Dr. Otto Larink 3. Referent : Prof. Dr. Dirk Selmar eingereicht am : 04.07.2006 mündliche Prüfung (Disputation) am : 28.09.2006 2006 To Abeer, Rana, Mohamed and Tasneem, my lovely family! ACKNOWLEDGEMENTS I would like to express my deepest thanks to my mentor, Prof. Dr. Dr. Ewald Schnug, head of the Institute of Plant Nutrition and Soil Science, Federal Agricultural Research Centre (FAL) in Germany for initially accepting me as a PhD candidate and later on for his guidance, helpful encouragement and continuous support during the practical stages of the experiments and during the preparation of the thesis. As well I also acknowledge the efforts of Prof. Dr Otto Larink and Prof. Dr. Dirk Selmar who were generous with their precious time and advices.