Potatoes (Table 29). Teflubenzuron is registered for use on potatoes in Germany (1 x 0.045 kg ai/ha), Italy (1-2 x 0.024 kg ai/ha), Poland (1-2 x 0.038 kg ai/ha), Saudi Arabia (2 x 0.011 kg ai/hl), Spain (1-2 x 0.022 kg ai/ha) and Switzerland (0.038 kg ai/ha). The PHIs range from 14 to 28 days.
Trials on potatoes were conducted in the following countries: 2 in Brazil (4 x 0.06 or 0.12 kg ai/ha), 2 in France (1 x 0.046-0.26 kg ai/ha), 3 in Germany (2 x 0.052 kg ai/ha), 2 in Italy (1 x 0.045 kg ai/ha), 1 in Slovakia (1 x 0.022 kg ai/ha) and 1 study in the USA with replicated applications of 5 x 0.034-0.17 kg ai/ha. No residues above 0.05 mg/kg (LOD) were found in any sample at any PHI (7-79 days).
Table 29. Residues of teflubenzuron in potatoes from supervised trials. Tubers analysed.
| Country, year | Application | PHI, days | Residues, mg/kg | Report No. | ||
| kg ai/hl | kg ai/ha | No. | ||||
|
Brazil, 1985 |
0.015 |
0.06 |
4 |
24 |
<0.05 |
BRA85I01201 |
|
Brazil, 1985 |
0.030 |
0.12 |
4 |
24 |
<0.05 |
BRA85I01501 |
|
France, 1984
|
0.002 |
0.043 |
1 |
49 |
<0.05 |
FR8413511
|
|
0.005 |
0.085 |
1 |
49 |
<0.05 |
||
|
0.010 |
0.17 |
1 |
49 |
<0.05 |
||
|
0.015 |
0.23 |
1 |
49 |
<0.05 |
||
|
France, 1984
|
|
0.03 |
1 |
7 |
<0.05 |
FR8414521
|
|
|
0.06 |
1 |
7 |
<0.05 |
||
|
|
0.12 |
1 |
7 |
<0.05 |
||
|
|
0.18 |
1 |
7 |
<0.05 |
||
|
Germany, 1982 |
0.01 |
0.052 |
2 |
0 |
<0.05 |
C821272 |
|
|
|
|
64 |
<0.05 |
||
|
Germany, 1982 |
0.01 |
0.052 |
2 |
0 |
<0.05 |
C82120101 |
|
|
|
|
14 |
<0.05 |
||
|
Germany, 1982 |
0.01 |
0.052 |
2 |
14 |
<0.05 |
C82120501 |
|
|
|
|
41 |
<0.05 |
||
|
Italy, 1985 |
0.01 |
0.045 |
1 |
21 |
<0.05 |
184370701 |
|
Italy, 1985 |
0.01 |
0.045 |
1 |
35 |
<0.05 |
184370703 |
|
Slovakia, 1987 |
|
0.022 |
1 |
79 |
<0.05 |
CU-88-492 |
|
USA, 1987
|
|
0.034 |
5 |
16 |
<0.05 |
HAS A025.001
|
|
|
0.034 |
5 |
16 |
<0.05 |
||
|
|
0.17 |
5 |
16 |
<0.05 |
||
|
0.007 |
0.034 |
5 |
14 |
<0.05 |
||
|
0.007 |
0.034 |
5 |
14 |
<0.05 |
||
|
0.036 |
0.17 |
5 |
14 |
<0.05 |
||
|
0.004 |
0.034 |
5 |
14 |
<0.05 |
||
|
0.017 |
0.034 |
5 |
14 |
<0.05 |
||
|
0.017 |
0.034 |
5 |
14 |
<0.05 |
||
|
0.017 |
0.034 |
5 |
24 |
<0.05 |
||
|
0.017 |
0.034 |
5 |
24 |
<0.05 |
||
|
0.08 |
0.17 |
5 |
24 |
<0.05 |
||
|
0.08 |
0.17 |
5 |
24 |
<0.05 |
||
Cereals. Teflubenzuron is registered for general use on cereals only in Switzerland, with 0.06 kg ai/ha and a PHI of 42 days, but is approved for use on maize in Columbia, Ecuador and Italy, and for sorghum in Columbia and Ecuador: supervised trials were reported only on maize.
