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Table 2. Dose-mortality biossays of codling moth eggs using neonicotinyl and insect growth regulator insecticides, 2001-2004.
|
| Insecticide |
Year |
No.
individuals |
MFR
mg AI/liter |
Slope (SE)a |
LC 50 |
Toxicity Index |
Estimated mortality (%) at proportion
of maximum field rate |
Estimated value |
mg AI/liter (95% CI) |
1 ´ MFR |
0.1 ´ MFR |
| Codling moth eggs (topical exposure) |
| Acetamiprid 70WP |
2004 |
1476 |
45 |
1.3 (0.1) |
0.5 (0.3-0.7) |
99.4 |
89.2 |
| Thiacloprid 480 SC |
2002 |
597 |
75 |
1.4 (0.1) |
2.0 (0.6-4.0) |
98.5 |
78.1 |
| Clothianidin 50WP |
2004 |
1457 |
56 |
2.0 (0.1) |
27.1 (15.1-41.1) |
72.1 |
7.9 |
| Methoxyfenozide 2F |
2002 |
596 |
75 |
1.6 (0.1) |
0.4 (0.1-0.8) |
100.0 |
97.9 |
| Difluorobenzamide 0.83EC |
2004 |
1547 |
78 |
1.0 (0.04) |
0.2 (0.1-0.3) |
99.6 |
94.8 |
| Codling moth eggs (residual exposure) |
| Acetamiprid 70WP |
2001 |
758 |
45 |
0.8 (0.04) |
34.9 (7.9-207.4) |
53.3 |
23.7 |
| Thiacloprid 480 SC |
2004 |
1192 |
75 |
0.9 (0.1) |
281.0 (145.2-3765.5) |
33.3 |
9.1 |
| Clothianidin 50WP |
2004 |
1780 |
56 |
0.7 (0.03) |
62.3 (31.2-185.5) |
49.4 |
23.7 |
| Methoxyfenozide 2F |
2001 |
995 |
75 |
1.0 (0.04) |
0.9 (0.1-2.2) |
97.3 |
82.3 |
| Difluorobenzamide 0.83EC |
2004 |
1470 |
78 |
2.4 (0.1) |
7.0 (5.2-8.8) |
99.4 |
53.6 |
|
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a A 't' ratio test on the slope parameter of each probit line was conducted and in each case was greater then 1.96 indicating a linear fit for the data.
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