Trends in Use in Pesticides on Groundwater Protection List
Table 6A. The reported pounds of pesticides on the groundwater protection list applied in California from 1991 to 1998. These pesticides are the currently registered active ingredients listed in the California Code of Regulations, Title 3, Division 6, Chapter 4, Subchapter 1, Article 1, Section 6800(a) and norflurazon. Use includes both agricultural and reportable non-agricultural applications. Data are from the Department of Pesticide Regulation's Pesticide Use Reports with probable errors removed.
| Active Ingredient |
1991 |
1992 |
1993 |
1994 |
1995 |
1996 |
1997 |
1998 |
| ATRAZINE |
52,556 |
48,313 |
44,485 |
46,497 |
36,078 |
57,018 |
46,568 |
54,840 |
| ATRAZINE, OTHER RELATED |
2,792 |
2,567 |
2,365 |
2,480 |
1,932 |
3,062 |
2,502 |
2,943 |
| BENTAZON, SODIUM SALT |
1,100 |
846 |
1,017 |
1,175 |
655 |
1,518 |
1,907 |
1,757 |
| BROMACIL |
99,906 |
112,160 |
117,128 |
104,052 |
95,444 |
98,293 |
82,424 |
84,645 |
| BROMACIL, DIMETHYLAMINE SALT |
<1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| BROMACIL, LITHIUM SALT |
5,742 |
4,837 |
7,045 |
11,085 |
6,517 |
17,381 |
9,141 |
4,686 |
| DIURON |
1,079,083 |
916,083 |
1,074,854 |
1,234,507 |
1,054,409 |
1,265,426 |
1,228,114 |
1,504,268 |
| NORFLURAZON |
141,752 |
171,375 |
164,451 |
154,383 |
153,138 |
196,142 |
212,621 |
265,886 |
| PROMETON |
186 |
87 |
41 |
84 |
117 |
68 |
20 |
22 |
| SIMAZINE |
752,893 |
887,151 |
957,812 |
890,353 |
837,366 |
839,209 |
764,586 |
794,758 |
| Total |
2,136,012 |
2,143,420 |
2,369,197 |
2,444,616 |
2,185,656 |
2,478,115 |
2,347,882 |
2,713,804 |
Table 6B. The reported acres treated in California from 1991 to 1998 with pesticides on the groundwater protection
list. These pesticides are the currently registered active ingredients listed in the California Code of Regulations,
Title 3, Division 6, Chapter 4, Subchapter 1, Article 1, Section 6800(a) and norflurazon. Use includes primarily
agricultural applications. The total for acres treated is less than the sum of acres treated for all active ingredients
because some products contain more than one active ingredient. Data are from the Department of Pesticide Regulation's
Pesticide Use Reports with probable errors removed.
| Active Ingredient |
1991 |
1992 |
1993 |
1994 |
1995 |
1996 |
1997 |
1998 |
| ATRAZINE |
21,374 |
21,425 |
23,617 |
32,065 |
22,234 |
32,043 |
27,257 |
37,556 |
| ATRAZINE, OTHER RELATED |
21,374 |
21,425 |
23,617 |
32,065 |
22,234 |
32,042 |
27,257 |
37,529 |
| BENTAZON, SODIUM SALT |
1,260 |
894 |
1,107 |
1,688 |
805 |
1,460 |
2,010 |
1,904 |
| BROMACIL |
69,584 |
82,090 |
78,423 |
65,421 |
66,289 |
62,206 |
58,722 |
57,136 |
| BROMACIL, DIMETHYLAMINE SALT |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| BROMACIL, LITHIUM SALT |
0 |
<1 |
0 |
0 |
0 |
0 |
0 |
40 |
| DIURON |
348,038 |
392,716 |
414,892 |
454,829 |
507,279 |
685,352 |
819,993 |
865,246 |
| NORFLURAZON |
117,279 |
143,942 |
142,274 |
139,498 |
133,585 |
179,015 |
186,991 |
214,144 |
| PROMETON |
48 |
3 |
11 |
8 |
23 |
27 |
8 |
85 |
| SIMAZINE |
544,287 |
616,551 |
615,003 |
589,560 |
573,735 |
607,228 |
613,237 |
647,072 |
| Total |
1,033,579 |
1,179,383 |
1,198,303 |
1,218,778 |
1,238,484 |
1,505,936 |
1,651,236 |
1,769,479 |
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