Professor Park is an international leader in the pathology and genetics of cereal rust pathogens. Through his personal science and leadership of the world-renowned Australian Cereal Rust Control Program, he has made major contributions to the national effort to control these diseases. His research underpins the estimated $1 billion benefit that resistance breeding contributes annually to the cereals industry. His research group has played a pivotal role in breeding cereal cultivars that carry in-built genetic resistance to stem, leaf and stripe rust, a troika of the most feared cereal diseases.