Pyrazosulfuron-ethyl at 25 g ha- I applied 10 days after transplanting (OAT), tank mixed (3 OAT) or sequential application of butachlor 938 g ha- J (3 OAT) and Almix at 4 g ha- I (25 OAT) were identified as promising alternatives to the commonly used herbicide butachlor at 1:5 kg ha- 1•