In the irrigated cotton-growing areas of south eastern Australia, there is an increasing awareness for the need for land resource information and its importance for environmental management. This is particularly the case at the field scale where soil management is highly desirable. Acquisition of soil information at this level is labour intensive and time consuming, however. A major problem is determining where samples should be taken. What is required is a relatively cheap and efficient technique, based on remotely sensed data, which can be used as a surrogate for soil survey and therefore assist with the selection of suitable sampling sites to account for the various soil types and spatial variability of soil properties.