A knowledge system model to improve the effectiveness of the transfer of(irrigation) information to growers was developed and tested. Knowledge can be described as information combined with experience, context, interpretation, and reflection. A frequent misconception is to equate it with information. The knowledge system depends on the way in which information is applied. Industry extension programs need to facilitate opportunities for knowledge sharing and transfer. This is significantly more complex than typical irrigation extension programs. The central feature of the model was to employ more of the five extension models rather than only the two commonly used. The main vehicle was the concept of cohesive, self-directing groups that form the core around which activities under the other models are conducted. This was achieved by production of an innovative Cotton

& Grains Irrigation Workshop Series containing 7 modules; establishment of a pathway for accreditation in irrigation management; development of a model for delivering commercial

irrigation services; production of a range of information resources; creation of a dedicated

irrigated cotton and grains web site.