One should choose a simple system and not repeat the series of lot designations more often than every 3 years. A HIGH percentage of pure seed is desirable. Amount present is expressed as a percentage. A LOW percentage is desirable. CROP SEED Seeds of plants grown as crops, other than the kind and variety named on the tag.
Presence is indicated in percentage of the whole.
A LOW percentage, preferably none, is desirable. WEED SEED Seeds, bulblets, or tubers of plants recognized as weeds by laws, official regulations, custom, or general usage. Their presence is expressed as a percentage. A LOW percentage, preferably none, is desirable. Standards of germination for certified seed are established by the Kentucky Seed Improvement Association.