A more recent survey by CSD (Cotton Seed Distributors Ltd.) in 2007 targeted growers that were achieving 12 bales /ha cotton yields. They found that 87% of crops that achieved at least 12 bales /ha were planted into fallow fields, the majority of which had grown a cereal since the previous cotton crop. New varieties and improvements in irrigation management are recognised as key drivers of high cotton yields in recent seasons, however yield stagnation or decline in back-to-back cotton fields has also become more apparent. Crop rotation is critical in order for irrigators to achieve the productivity improvements on offer in cotton. The impact cereal rotations have on the soil provides an insight into how crop rotations build an inherently more productive cropping system