Citrus Greening (International)

Huanglingbing (HLB, citrus greening) is a devastating disease of citrus crops, affecting all species and varieties. This disease is caused by three strains of a bacteria 1) Candidatus Liberibacter asiaticus which is in the United States and Asia 2) Candidatus Liberibacter africanus found in Africa, and 3) Candidatus Liberibacter americanus present in Brazil, and southern Texas. This disease is vectored by the Asian citrus psyllid (Diaphorina citri Kuwayama).