Table 4.
USGS-estimated annual agricultural pesticide use for arbor–pastoral parishes (counties) in Louisiana, 1992–2004, from https://pubs.usgs.gov/ds/752/ For parish locations and relation to vegetation, see https://geology.com/county-map/louisiana.shtml.
| (a) 2,4-D | ||||||||
|---|---|---|---|---|---|---|---|---|
| Louisiana Parish | 2,4-D Kg, Epest-low | 2,4-D Kg Epest-high | ||||||
| 1992 | 1996 | 2000 | 2004 | 1992 | 1996 | 2000 | 2004 | |
| Allen | 6535.5 | 4426.4 | 4050.4 | 7175 | 5781.5 | 4209.9 | ||
| Beauregard | 966.8 | 1876 | 4260.2 | 2441.5 | 2454.3 | 4281.3 | 4390.6 | 2683.3 |
| Bienville | 369.1 | 3217.2 | 6535.5 | 622.5 | 465.1 | 3234.3 | 377.5 | |
| Claiborne | 12.5 | 4679 | 0.6 | 316 | 596.1 | 4679.2 | 552.3 | |
| East Feliciana | 792.8 | 809.2 | 360.9 | 700.1 | 1503.4 | 1006.3 | 938.4 | 734.4 |
| Grant | 221.8 | 374.2 | 160.4 | 768.1 | 383.9 | 942 | 200.4 | 922.2 |
| La Salle | 745.3 | 213.8 | 32.8 | 158.5 | 785.1 | 301.5 | 32.8 | 158.5 |
| Sabine | 165.7 | 26.1 | 1329.1 | 3602 | 464.2 | 779.8 | 1329.1 | 3602 |
| St. Helena | 2355.6 | 896.8 | 18 | 239.8 | 2553.2 | 1046.1 | 235.5 | 274.7 |
| Tangipahoa | 3926.9 | 1622.2 | 481.7 | 677 | 4507.3 | 1938.9 | 1035 | 734 |
| Washington | 2728.3 | 1407.7 | 353.6 | 433.1 | 3606.7 | 1718.6 | 688.8 | 508.6 |
| Winn | 3.8 | 1919.9 | 104.1 | 199.7 | 1919.9 | 221.9 | ||
| (b) Chlorpyrifos | ||||||||
| Louisiana Parish | Chlorpyrifos Kg, Epest-low | Chlorpyrifos Kg Epest-high | ||||||
| 1992 | 1996 | 2000 | 2004 | 1992 | 1996 | 2000 | 2004 | |
| Allen | 24.9 | 10.3 | 35.2 | 2.5 | 67.6 | 151.3 | 58.7 | 13.8 |
| Beauregard | 70.7 | 46.1 | 313.5 | 44.7 | 187.1 | 637 | 443.7 | 89 |
| Bienville | 1.6 | 104.4 | 7.7 | 160.3 | 106.9 | 8 | 10.2 | |
| Claiborne | 2.1 | 0.9 | 16.1 | 2.1 | 1.9 | 0.9 | ||
| East Feliciana | 13.9 | 486.6 | 182.8 | 502 | 141.4 | 112.2 | ||
| Grant | 479.3 | 504.3 | 416 | 22.8 | 491.5 | 1040.1 | 569.6 | 160.6 |
| La Salle | 7.1 | 3.7 | 3.2 | 4.4 | 15.6 | 4.4 | 5 | 7.1 |
| Sabine | 0.8 | 15 | 2.8 | 3.5 | 17.5 | 1.1 | 2.8 | |
| St. Helena | 7.3 | 987.3 | 0.8 | 96.2 | 993.7 | 73.6 | 98.9 | |
| Tangipahoa | 44.5 | 1441.8 | 0.6 | 283.1 | 1461.3 | 223.7 | 174.2 | |
| Washington | 74.1 | 2238.8 | 3.4 | 449.9 | 2254.5 | 194.6 | 214.3 | |
| Winn | 0.6 | 37.1 | 1.6 | 4.8 | 37.1 | 16 | ||
| (c) Paraquat | ||||||||
| Louisiana Parish | Paraquat Kg, Epest-low | Paraquat Kg Epest-high | ||||||
| 1992 | 1996 | 2000 | 2004 | 1992 | 1996 | 2000 | 2004 | |
| Allen | 6.4 | 59.1 | 223.3 | 146.4 | 54.5 | |||
| Beauregard | 2.5 | 4.8 | 15.5 | 5.6 | 89.2 | 272.7 | 318.5 | 135.1 |
| Bienville | 4.2 | 1.8 | 69.6 | 449.8 | 27.1 | 3.3 | 69.6 | |
| Claiborne | 711.8 | 14 | 0.6 | |||||
| East Feliciana | 259.1 | 45.1 | 20.1 | 5.4 | 277.9 | 95.9 | 165.3 | 112.8 |
| Grant | 50 | 86.3 | 699.7 | 45.9 | 160.1 | 117.7 | 793.6 | 174.6 |
| La Salle | 4.9 | 12.1 | 34.9 | 10.8 | 11.8 | 12.3 | 34.9 | 23.9 |
| Sabine | 0.5 | 1.9 | 1.7 | 17.1 | 6.2 | |||
| St. Helena | 5.4 | 0.2 | 1.1 | 1.1 | 21 | 72.7 | 153.9 | 110.7 |
| Tangipahoa | 407.3 | 576.2 | 15.2 | 1.2 | 435.3 | 692.5 | 352 | 179.7 |
| Washington | 191.5 | 83.2 | 22.9 | 7.3 | 224.1 | 251.8 | 421.7 | 244.2 |
| Winn | 208.7 | 4.1 | ||||||