What Seed Size Influences Yield

As of 1967, the effect of seed size and plumpness was already a concern to farmers as it related to their crop yields. To study the effect of seed quality of hard red spring wheat on yield, a lot of certified Selkirk seed of variable seed size and containing some shriveled seed was separated into two seed sizes over and through a .No. 9 round hole sieve on a sieve cleaner. -In 1965 and 1966, a similar trial, referred to as test number 2, was grown in a rod row planting in which an equal number of variable seeds from the same lots used in test number one were planted per unit area for all seed sizes and test weights. These two trials are reviewed in this article. Small shriveled seeds of hard red spring wheat will produce satisfactory crop yields, but, such yields will be lower than yields from larger plumper seed planted under similar field conditions