This project aimed to increase the profitable and sustainable production of papaya by reducing the effect of bacterial crown rot disease in Philippines and dieback in Australia. Papaya is an important and continually expanding crop in the Philippines. It is ranked sixth in terms of area planted and fifth in terms of volume produced. Bacterial crown rot can kill half to all the papaya crop. The project will characterise the bacterial crown rot organism, and develop and evaluate sustainable management practices for bacterial crown rot and dieback diseases.