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The development of herbicide resistance in annual ryegrass (Lolium rigidum) now has added a major new challenge for lupin producers in Western Australia. A new sowing technique was developed, tested and demonstrated in comparison with the conventional methods of sowing lupins using press wheels or harrows. The lupin seed was pressed into the soil but the soil was left loose above the seed using a depth controlled rotary harrow as compared to firming seed and soil together by press wheels. This new system gave excellent results in terms of establishment, annual ryegrass seed set reduction and yield in a range of soil-moisture environments in Western Australia. During 1997 and 1998, lupin yield improvement up to 16% (average 5.4%) with 42% annual ryegrass seed set reduction was observed in field experiments. Machinery manufacturers now have the challenge to achieve this principle on commercial broadacre seed drills.