Uniformity Trials with Spring Wheat 1

UNIFORMITY trials with various crops have served a de:finite purpose in determining the most effective plot arrangement and experimental design for the particular area involved. Where growing conditions are subject to variations of similar magnitude, the design and plot recommendations for each crop have become mote or less regiona.1. Although numerous small grain uniformity experiments have been conducted in the United States and Canada they have, in the main, been carried out under conditions quite unlike those found in the Palouse area of eastern Washington. Topographically, the Palouse is an area of undulating dune-like hills with south or southwest slopes and steep north slopes and comprising about a million acres in eastern Washington and western Idaho. The problem of adapting cereal trials to this topography, with its associated fertility and moisture gradients, is sufficiently complex to merit study.