RCBD
EXPEREMENTAL DESIGNS The Randomized Complete Block Design (RCBD) The RCBD is the standard design for agricultural experiments where similar experimental units are grouped into blocks or replicates. It is used to control variation in an experiment by accounting for spatial effects in field or greenhouse. e.g. variation in fertility or drainage differences in a field Treatments are then assigned at random to the subjects in the blocks-once in each block. The defining feature of the Randomized Complete Block Design is that each block sees each treatment exactly once. With RCBD the experimental field is divided into blocks which should be perpendicular to the direction of the gradient and such that there is uniformity with blocs and not necessarily between blocks. Blocking helps to remove any variation among blocks thereby reducing experimental error. Advantages of the RCBD Gene...