This Cooperative Extension Service publication from Mississippi State University is a training guide for commercial pesticide applicators. Focusing specifically on the treatment of seeds with pesticides, this publication is meant to prepare one to take the written examination for Environmental Protection Agency Seed Treatment certification. Contents include: seedling disease development, some of the disease causing organisms associated with seedling diseases, cereal grain insects, pesticide labels, seed treatment fungicides and pesticides, seed treatment equipment, operation, calibrating a slurry or liquid seed treater, federal and state labeling requirements for treated seeds, and seed treatment safety precautions. (MR)