Sustaining today's modern intensive agriculture, soil testing is the most important way to manage inputs and crop production. This is the only key and diagnostic tool for determining the nutrient requirement for plants. Towards sustainable soil fertility and productivity, determination of problems like acidity, salinity and alkalinity, avoid excess use fertilizers and ensures environmental safety, evaluation of suitability of soil for crops, restoring soil fertility, use efficiency water and nutrients, selecting suitable pesticides, in the whole to predict the probability of achieving profitable response of applied inputs and restoring soil fertility should be studied. Keeping these things in mind the entire book has been divided into sixteen chapters dealing with various analytical methods that most commonly used in soil sciences covering soil, plant, water, pesticides, manures, fertilizers and radioisotopes and its application used soil and plant studies are arranged in such a way that it would help the readers to understand the basic concepts and techniques of the analytical methods up to date. Also glossary of soil science terms viz., general, soil health and soil ecology provided as a ready reference for the readers. Further, this book provided twelve annexure which contains sufficient details as a ready reconer for the laboratory analytics of soil, plant, water, manures, fertilizers, pesticides and special reference to radioisotope laboratory and safety measures. This book has been written analytical methods are depicted in a self explanatory way to users. The authors hope that the researchers, students, lab technicians, agri-clinic holders, soil testing laboratories and tutors of agriculture and allied disciplines would find this book as a complete guide of reference in analytical methods.