The Trial Design in Katmandoo, is the grouping of Trial Units (eg. plots) laid out in a specific order. Trial Units are generally considered the design level of the trial. Each Trial Unit consists of Unit Position Factors and Treatments. Unit Position factors identify blocking information for the trial. Common examples are Plot Number, Block, Column, Range, Row, Tree, Bay and Pot. Although each Trial may include its own unique set of Unit Position Factors, the intention is to set up a common strategy for trial structure so that multiple trials can be exported together with common column headers.
Although many trials will consider Genotype to be the treatment, additional treatments may be applied to Trial Units for the purpose of investigation. An example may be the presence or absence of an inoculum or a specific fungicide used on the Trial Unit.