1990 and 1991 Market Estimates , Fall 1992. Pesticide usage in the U.S. has been relatively stable at about 1.1 billion pounds of active ingredient during recent years. The agricultural share of pesticide usage appears to have stabilized at three-fourths of the total after increasing steadily through the 1960's and 1970's, primarily due to the expanded use of herbicides in crop production. The volume of pesticides used for nonagricultural purposes in the U.S. has been quite stable in recent years at about 275 million pounds of active ingredient. The use of pesticides occurs on more than 900,000 farms and in about 69 million households.
Herbicides are the leading type of pesticides, in terms of both user expenditure and volumes used.
The two most widely used pesticides by volume are atrazine and alachlor. Prepared by Iowa State University , Ames, Iowa. This information subject to a usage policy .