Evaluation of weed populations under the influence of site-specific weed control to derive decision rules for a sustainable weed management [Elektronische Ressource] / presented by Carina Ritter

Institute of Phytomedicine Weed Science Department University of Hohenheim Prof. Dr. R. Gerhards “Evaluation of weed populations under the influence of site-specific weed control to derive decision rules for a sustainable weed management” Dissertation Submitted in fulfilment of the requirements for the degree “Doktor der Agrarwissenschaften” (Dr.sc.agr. / Ph.D. in Agricultural Sciences) to the Faculty of Agricultural Science presented by Carina Ritter from Heidelberg 2008 This thesis was accepted as a doctoral dissertation in fulfilment of the requirements for the degree “Doktor der Agrarwissenschaften” by the Faculty Agricultural Sciences at the University of Hohenheim on January 30, 2008. Date of oral Examination: April 10, 2008 Examination Committee: Supervisor and Review Prof. Dr. R. Gerhards Co-Reviewer Prof. Dr. W. Claupein Additional Examiner Prof. Dr. W. Kühbauch Vice-Dean and Head of the Committee Prof. Dr. W. Bessei Man muss seine Ideen verwirklichen, sonst wuchert Unkraut darüber. Johann Paul Friedrich Richter (1763 - 1825) Contents Page 1. General Introduction ............................................................................... 1 1.1 State of knowledge.......................................................................................