Bulletin #7144, Approaches to the Biological Control of Insects (PDF) Kimberly Stoner, PhD, Vegetable Entomologist, Connecticut Agricultural Experiment Station. For information about UMaine Extension programs and resources, visit extension.umaine.edu.Find more of our publications and books at extension.umaine.edu/publications/. Table of Contents Natural Enemies of Pest Insects Using Biological Control in the Field Conservation of Existing Natural