A note on the Design of Unreplicated Trials

Abstract

One approach to the design of early generation trials is to have a number of replicated check varieties and a larger number of unreplicated or new varieties. For such trials we define the class of α-α-designs as an extension to the augmented lattice square designs of Federer (2002). Efficient latinized αα-designs can be conveniently constructed using the design generation package CycDesigN.