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Chemicals play significant roles in agriculture today. In the United States they contribute to the immense capability of farmers to produce food and fiber. They are viewed as promising steps in economic development in parts of the world where population grows faster than food production.
Iowa State University. Agricultural and Home Economics Experiment Station
Beal, George M.; Bohlen, Joe M.; and Lingren, Herbert G., "Behavior studies related to pesticides: agricultural chemicals and Iowa farmers" (1966). Special Report. 37.