Broccoli (Table 19). Teflubenzuron is registered for use on broccoli in The Netherlands with 2-4 treatments at 0.06 kg ai/ha and a PHI of 14 days. In two German trials corresponding to Dutch GAP the residues were 0.13 and 0.19 mg/kg at day 14.
Table 19. Residues of teflubenzuron in broccoli from supervised trials in Germany, 1984. Whole broccoli analysed.
|
Application |
PHI, days |
Residues, mg/kg |
Report No. |
||
|
kg ai/hl |
kg ai/ha |
No. |
|||
|
0.010-0.012
|
0.06
|
3
|
0 |
0.42 |
C 842772
|
|
7 |
0.24 |
||||
|
14 |
0.13 |
||||
|
21 |
0.06 |
||||
|
28 |
<0.05 |
||||
|
0.010-0.012
|
0.06
|
3
|
0 |
0.73 |
C 842872
|
|
7 |
0.38 |
||||
|
14 |
0.19 |
||||
|
21 |
0.08 |
||||
|
28 |
<0.05 |
||||
Underlined residues are from treatments according to Dutch GAP
Brussels sprouts (Table 20). Teflubenzuron is currently registered in The Netherlands, where 6-8 treatments at 0.09 kg ai/ha with a PHI of 14 days are recommended.
Eight residue trials were conducted in The Netherlands with 4, 5 and 6 applications at 0.06 or 0.09 kg ai/ha. The residues of teflubenzuron after 14 days were 0.1-0.28 and 0.12-0.48 mg/kg after treatment with 0.06 and 0.09 kg ai/ha respectively.
Table 20. Residues of teflubenzuron in Brussels sprouts from supervised trials in The Netherlands, 1985. Whole plants analysed.
|
Application |
PHI, days |
Residues, mg/kg |
Report No. |
||
|
kg ai/hl |
kg ai/ha |
No. |
|||
|
0.006 |
0.06 |
6 |
14 |
0.18 |
85-162A |
|
21 |
0.2 |
||||
|
0.006 |
0.06 |
5 |
14 |
0.15 |
85-163A |
|
0.006 |
0.06 |
5 |
14 |
0.28 |
85-164A |
|
21 |
0.2 |
||||
|
0.006 |
0.06 |
4 |
14 |
0.1 |
85-165 |
|
0.009 |
0.09 |
6 |
14 |
0.39 |
85-162B |
|
21 |
0.24 |
||||
|
0.009 |
0.09 |
5 |
14 |
0.24 |
85-163B |
|
0.009 |
0.09 |
5 |
14 |
0.48 |
85-164B |
|
21 |
0.34 |
||||
|
0.009 |
0.09 |
4 |
14 |
0.12 |
85-165 |
