The effects of rotation crops and stubble management on soil quality, carbon sequestration, deep drainage, nutrient leaching, yield and profitability of succeeding cotton in irrigated and dryland Vertosols was studied from 2005 to 2008 in seven irrigated experiments (near Ashley via Moree, Narrabri and ACRI in NSW and Goondiwindi in Queensland), and one dryland experiment in Queensland (Brigalow in the Darling Downs). Key management issues considered were tillage systems, rotation crops and stubble management, sowing cotton into standing wheat and vetch stubble, in particular.