Herbicide treatment | Rate | Visible Control | Density | Biomass | Maize grain yield | |||
2 WAA | 4 WAA | 8 WAA | 12 WAA | |||||
| g ai ha−1 | ------------------------------- % ------------------------------- | Plants m−2 | g·m−2 | kg·ha−1 | |||
Tolpyralate | 30 | 78 a | 91 ab | 96 a | 98 a | 2 ab | 1 ab | 10,500 a |
Tolpyralate + atrazine | 30 + 1000 | 94 a | 98 a | 99 a | 99 a | 0 a | 0 a | 10,100 a |
Mesotrione + atrazine | 100 + 280 | 90 a | 93 ab | 95 a | 98 a | 2 ab | 1 ab | 10,400 a |
Dicamba/atrazine | 500/1000 | 65 a | 80 b | 88 a | 91 b | 8 b | 8 b | 9500 a |
Non-treated control | 0 | - | - | - | - | 96 c | 99 c | 9100 a |
Weed-free control | n/a | - | - | - | - | - | - | 10,400 a |