To investigate the management, sustainability and profitability of a range of farming systems. 

• Reliance on chemicals as the only weed control option is difficult (almost impossible) in a run of dry years.
• This trial will cease at the end of 2004 (3 years too early to obtain meaningful results) unless other funding is found.
• The trial showed, in the 2003 season, that there was no yield penalty for waiting until rain for sowing, although grain protein was lower in these crops.