| Huanglongbing (HLB) is a destructive citrus disease in almost the world. In Vietnam, the disease has been reported since early 1960s, and it is caused by Gram negative bacteria “Candidatus Liberibacter asiaticus”, which is transmitted by the Asian citrus psyllid (ACP), Diaphorina citri. Through many international projects, Vietnam has studied on it and the control measures against it, including removing diseased trees, selecting resistant varieties, changing time and density of citrus planting, intercropping, chemical and biological control, spraying mineral oils, supplying organic fertilizer, utilization of pest free seedlings and grafting scions and avoiding freely moving the citrus seedlings in open air, etc. Controlling the black ant Dolichoderus thoracicus for better cultivation of the weaver ants, Oecophylla smaragdina, and interplanting of citrus with guava as staggered pattern might be used for reference to control HLB and ACP in China. |
