| Treatmentb | Rate | Control (%) |
|
| |
|
| 4 WAT | 8 WAT | Density | Dry weight | |
| (g a.i. ha−1) | (plants m−2) | (g·m−2) | |||
| Weed-free control |
| 100 | 100 | 0 a | 0 a |
| Weedy control |
| 0 e | 0 f | 38 def | 25.8 gh |
| Halosulfuron | 25 | 27 d | 18 e | 43 ef | 29.3 h |
| Halosulfuron | 37.5 | 28 d | 21 de | 41 ef | 27.8 h |
| Halosulfuron | 50 | 36 cd | 27 cde | 36 def | 28.2 h |
| Bentazon | 1080 | 87 a | 85 a | 13 b | 2.7 b |
| Acifluorfen | 600 | 39 cd | 28 cde | 44 f | 23.6 efgh |
| Fomesafenc | 240 | 48 bcd | 39 bcde | 27 cdef | 16.0 efgh |
| Bentazon/acifluorfend | 840 | 60 bc | 53 bc | 24 bcde | 11.4 cdefg |
| Bentazon + fomesafen | 840 + 140 | 76 ab | 72 ab | 19 bcd | 5.6 bcd |
| Halosulfuron + bentazon | 1080 + 37.5 | 74 ab | 67 ab | 18 bc | 5.2 bc |
| Halosulfuron + acifluorfen | 600 + 37.5 | 62 abc | 49 bcde | 27 cdef | 13.4 defgh |
| Halosulfuron + fomesafen | 240 + 37.5 | 43 cd | 32 cde | 39 def | 25.4 fgh |
| Halosulfuron + bentazon/acifluorfen | 840 + 37.5 | 62 abc | 52 bcd | 22 bcde | 9.4 cde |
| Halosulfuron + bentazon + fomesafen | 840 + 140 + 37.5 | 66 abc | 60 ab | 19 bcd | 10.7 cdef |