ABSTRACT

In Section 1.2, we describe the famous long-termfield experiments at Rothamsted, which later became the Rothamsted Experimental Station. It is here that Fisher and Yates started their pioneering work. In Section 1.3, we discuss the cornerstones of modern experimental design, namely, the notions of replication, randomization, and blocking. We trace further

developments in the form of the Latin square principle (Section 1.4), factorial experiments (Section 1.5), incomplete block designs (IBDs) (Section 1.6), fractional factorial designs (Section 1.7), and response surface and mixture designs (Section 1.8). Considerations of efficiency and optimality are taken up in Section 1.9 and matters of analysis and computation in Section 1.10. We conclude this chapter with a brief discussion of areas of application (Section 1.11), with emphasis on extensions andmodifications of familiar designs discussed earlier.