Bulletin #2359, Maine Farm Safety Program: Pesticides and Their Toxicity (PDF) By Dawna L. Cyr, Farm Safety Project Assistant, and Steven B. Johnson, Ph.D., Extension Crops Specialist For information about UMaine Extension programs and resources, visit extension.umaine.edu. Find more of our publications and books at extension.umaine.edu/publications/. Agricultural chemicals have helped provide an abundance of high-quality,