In the 1960s, Minnesotans became concerned about the safe use of chemicals. Farmers used pesticides to control weeds, insects and plant diseases. Using additives in animal feeds to encourage growth and promote animal health was another concern. And a big worry was the direct hazards to people who applied chemicals. In 1964, Extension pulled together a committee of entomologists, agronomists, plant pathologists, animal scientists, nutritionists and others to gather research and set up educational workshops. Working in concert with state agencies and industry groups, Extension presented courses across the state for chemical applicators, farmers, pesticide dealers and others responsible for safe environmental practices and a safe food supply.