Allelopathy is a new field of science, as the term Allelopathy was coined by Prof. Hans Molisch, a German Plant Physiologist in 1937. Till now lot of Allelopathy research work has been done in various fields of Agricultural and Plant Sciences. However, there is no compilation of various Research Methods used. Every scientist is conducting research in his own way. It is causing lot of problems to researchers working in underdeveloped/Third World Countries in small towns without Library facilities. Therefore, to make available the standard methods for conducting allelopathy research independently, this multi-volume book has been planned. Since allelopathy is multi-disciplinary area of research, hence, volumes have been planned for each discipline. Prof. S.S. Narwal has planned this multi-volume Book Research Methods in Plant Sciences: Allelopahty. Three volumes (Volume 1. Soil Analysis, Volume 2. Plant Protection and Volume 3. Plant Pathogens) of this Book have been released during the IV. International Allelopathy Conference, 2004 at Hisar(India). Five volumes (Volume 4. Plant Analysis, Volume 5. Physiological Processes, Volume 6. Biochemical Processes, Volume 7. Forestry/Agroforestry Research and Volume 8. Isolation, Identification and Characterization of allelochemicals are under preparation. Volume 1. Soil Analysis is consists of 20 Chapters, describing the methods to analyse various types of soil properties. The Book is devided into three Sections: General, Physio-chemical properties and Soil microbiology. It provides complete information for Soil Analysis in simple and lucid language. The Figures/ illustrations have been given at appropriate places in text. It will prove very useful to undergraduate and post graduate students and teaching Faculty for Class Room and Laboratory experiments as well as for research.