Most of the japonica cultivars grown in the temperate region are susceptible to BPH. Although BPH was considered as a minor insect pest in the region for decades, since 2005, BPH outbreaks have been occurring frequently
Most of the japonica cultivars grown in the temperate regionare susceptible to BPH. Although BPH was considered as a minorinsect pest in the region for decades, since 2005, BPH outbreakshave been occurring frequently