This manual is intended to assist pesticide applicators to meet the requirements of the Michigan Department of Agriculture for certification. The primary focus of this publication is on forest pest control. An introduction with the explanation of pesticide applications in forestry is presented. The ten sections included describe: (1) Principal forest types in Michigan; (2) Forest insects; (3) Forest diseases; (4) Vertebrate populations and problems; (5) Forest vegetation control; (6) Pesticide labeling for forestry; (7) Special forestry application equipment; (8) Special precautions for pesticide use in forests; (9) Action of pesticides in the forest environment; and (10) Hazards of pesticide use and nonuse. A list of self-help questions and instructions for completing the questions are presented at the end of each section. (HM)