1 Background for Designing Laboratory Bioassays -- 2 Introduction to the Fundamentals of Laboratory Bioassays -- 3 Some Issues and Challenges When Designing Laboratory Bioassays -- 4 Hypothetical Standard Screening Bioassays -- 5 Effects, Modifiers and Modes of Action of Allelopathic Compounds Using Phenolic Acids as Model Compounds -- 6 Hypothetical Cause and Effect Bioassays -- 7 Laboratory Model Systems and Field Systems: Some Final Thoughts -- Author Index -- Subject Index.