Over the period from 1990 to 1993, research was carried out investigating the regrowth of Australian cotton varieties after damage by haiI. The work was funded by the Cotton Research and Development Corporation and carried out in co-operation with the loss adjusters to the Australian cotton industry, Agricultural Loss Management Group. By comparing the regrowth characteristics of Australian cotton varieties, following simulated hail damage at various stages of plant development, the aim was to test the accuracy of the loss assessment procedures currently used in cotton hail loss adjustment and determine whether it was appropriate to apply these procedures to loss adjustment for the whole range of Australian bred varieties now grown.