This encyclopaedia examines methods for soil, water, fertilizer and plant analysis. Concentration of essential elements found particularly in indicator tissue reflects the nutritional status of plants. Proper interpretation of soil, water and plant analysis is critical to effective use of this management tool. Guide lines for interpretation of analytical results have been developed over years based on research, surveys, and experience in this field. ln fact, analysis of soil and plants continues to evolve as an important management tool as interpretive data bases for various crops, stages of growth, and indicator tissue are developed. This work provides an overview of available interpretive information for soil, water and most economically important crops. The overview of sufficiency ranges and other interpretive data identifies voids in the research base and additional work needed to improve soil and plant analysis. The book is an indispensable read for agriculture students, research students and teachers on the subject