This 3-year project aims to develop a prototype machine based on existing technology that overcomes the inefficiencies and environmental damage of current subterranean (sub) clover seed harvesting methods. The team with skills in agricultural engineering and pasture agronomy will partner with an agricultural engineering firm and work with key seed growers in SA, NSW, Victoria and WA to further develop innovative solutions for more efficient and environmentally sustainable sub clover seed harvesting. Key issues to be optimised are: harvesting efficiency; soil structure and stability; seed yield and quality; and economic benefits and machinery cost and trade-offs.