This second edition of the manual contains detailed procedures for the field evaluation of sprinkler, surface, and trickle irrigation performance and management practices. It contains details such as: a list of equipment needed; step-by-step instructions for carrying out the field work; sample forms for recording and organizing the field data; and sample studies demonstrating the entire process. It also includes an analysis and recommendations for the actual care studies used. The introduction deals with the general uniformity, efficiency, and management concepts employed in the evaluation of each system. The sprinkler section covers both simple and full evaluations of regular fixed grid sprinkler systems as will be under tree orchard, center pivot and traveler sprinkler systems. There is a brief section dealing with trickle (or drip) irrigation and a section on basic irrigation. Both the furrow and border irrigation sections contain a simple (short cut) evaluation procedure as well as complete full evaluations.