Aims: *Use data which relates mite numbers to yield loss in order to derive and test action thresholds. * Finalise the development of a sampling technique in association with action thresholds and include both into SIRATAC. * Initiate developmental studies to determine the effects of temperature, humidity and host plant quality and variety on the rate of development of mite populations. * Continue studies of the abundance of mites on weeds and sources of infestation into cotton.