| Gross | Active ingredients (nutrient content) | ||||
| Year | tonnage | Nitrogen | Phosphate | Potash | Total |
| thousand tons | thousand tons | ||||
| 1960 | 24,877 | 2,738 | 2,572 | 2,153 | 7,464 |
| 1961 | 25,567 | 3,031 | 2,645 | 2,169 | 7,844 |
| 1962 | 26,615 | 3,370 | 2,807 | 2,271 | 8,448 |
| 1963 | 28,844 | 3,929 | 3,073 | 2,503 | 9,505 |
| 1964 | 30,681 | 4,353 | 3,378 | 2,730 | 10,460 |
| 1965 | 31,836 | 4,639 | 3,512 | 2,835 | 10,985 |
| 1966 | 34,532 | 5,326 | 3,897 | 3,221 | 12,445 |
| 1967 | 37,081 | 6,027 | 4,305 | 3,642 | 13,974 |
| 1968 | 38,743 | 6,788 | 4,453 | 3,793 | 15,034 |
| 1969 | 38,949 | 6,958 | 4,666 | 3,892 | 15,515 |
| 1970 | 39,589 | 7,459 | 4,574 | 4,036 | 16,068 |
| 1971 | 41,118 | 8,134 | 4,803 | 4,231 | 17,168 |
| 1972 | 41,206 | 8,022 | 4,864 | 4,327 | 17,213 |
| 1973 | 43,288 | 8,295 | 5,085 | 4,649 | 18,029 |
| 1974 | 47,094 | 9,157 | 5,099 | 5,083 | 19,338 |
| 1975 | 42,484 | 8,601 | 4,507 | 4,453 | 17,561 |
| 1976 | 49,189 | 10,412 | 5,228 | 5,210 | 20,849 |
| 1977 | 51,624 | 10,647 | 5,630 | 5,834 | 22,111 |
| 1978 | 47,497 | 9,965 | 5,096 | 5,526 | 20,587 |
| 1979 | 51,480 | 10,715 | 5,606 | 6,245 | 22,565 |
| 1980 | 52,787 | 11,407 | 5,432 | 6,245 | 23,083 |
| 1981 | 53,988 | 11,924 | 5,434 | 6,320 | 23,678 |
| 1982 | 48,669 | 10,983 | 4,814 | 5,631 | 21,428 |
| 1983 | 41,813 | 9,127 | 4,138 | 4,831 | 18,096 |
| 1984 | 50,056 | 11,092 | 4,901 | 5,797 | 21,790 |
| 1985 | 49,109 | 11,493 | 4,658 | 5,553 | 21,703 |
| 1986 | 44,071 | 10,424 | 4,178 | 5,053 | 19,655 |
| 1987 | 42,964 | 10,210 | 4,008 | 4,837 | 19,054 |
| 1988 | 44,527 | 10,512 | 4,129 | 4,973 | 19,613 |
| 1989 | 44,787 | 10,593 | 4,117 | 4,838 | 19,548 |
| 1990 | 47,705 | 11,076 | 4,345 | 5,203 | 20,624 |
| 1991 | 47,290 | 11,287 | 4,201 | 5,001 | 20,489 |
| 1992 | 47,794 | 11,446 | 4,218 | 5,042 | 20,706 |
| 1993 | 49,197 | 11,393 | 4,436 | 5,141 | 20,969 |
| 1994 | 52,319 | 12,643 | 4,521 | 5,268 | 22,432 |
| 1995 | 50,724 | 11,720 | 4,417 | 5,123 | 21,259 |
| 1996 | 53,400 | 12,303 | 4,527 | 5,258 | 22,088 |
| 1997 | 55,017 | 12,352 | 4,612 | 5,425 | 22,389 |
| 1998 | 54,985 | 12,313 | 4,615 | 5,301 | 22,229 |
| 1999 | 53,537 | 12,436 | 4,345 | 5,016 | 21,797 |
Sources: The Association of American Plant Food Control Officials (AAPFCO, Lexington, KY), and The Fertilizer Institute (TFI, Washington, DC). Commercial Fertilizers, 1999, and earlier issues of this report.
U.S. Department of Agriculture, Economic Research Service, AREI UPDATES: Nutrient Use and Practices on Major Field Crops, Table 1, p. 2 (USDA, ERS, Washington, DC, 1997) and agency updates.
Notes: Years ending June 30. Quantity refers to total fertilizer materials. Includes fertilizer use on farms, lawns, golf courses, home gardens, and other nonfarm lands. Includes Puerto Rico.
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