Specifically for citrus, populations of key natural enemies (e.g. Cales noacki, Rodolia cardinalis, Euseius stipulatus, Citrostichus phyllocnistoides, Aphytis melinus, Metaphycus spp, Chrysoperla carnea) must be preserved and incremented.
- Huanglongbing disease is produced by a bacterium (Candidatus Liberibacter spp.) transmitted by Psillidae insects (Diaphorina citri and Trioza erytreae); the control of the Psillidae species through the use of parasitoids is as crucial together with the avoidance of the entrance of the bacterium in countries /area still free.