1. (1) It has been determined that the destructive disease known as citrus greening disease (CG), also known as Huanglongbing disease of citrus, caused by the bacterial pathogen “Candidatus liberibacter asiaticus”, defined as an injurious disease under the provisions of Code of Ala. 1975, §2-25-1(1). It is also found and determined that quarantine against said disease would be in the best interest of horticulture and agriculture in Alabama.
2. (2) It has also been determined that the destructive insect, Asian Citrus Psyllid (ACP), Diaphorina citri Kuwayama, defined as an insect pest under the provisions of Code of Ala. 1975, §2-25-1(1), has been found in the state of Alabama. It is also found and determined that quarantine against said insect pest would be in the best interest of horticulture and agriculture in Alabama.
3. (3) It is also determined that other Citrus diseases and pests are detrimental to the Citrus industry in Alabama. These include viruses, viroids, and diseases listed in the following Chart 1 and Citrus pests listed in the following Chart 2. It is also found and determined that quarantine against such viruses, diseases and pests would be in the best interest of Horticulture and Agriculture in Alabama.

4. (4) The purpose of this rule is to establish quarantine against the Asian Citrus Psyllid and Citrus pests and diseases listed in Chart 1 and Chart 2 for the protection of the citrus industry of Alabama.

   Citrus Disease Chart 1

   Common Name	Casual Organism
   Citrus Black Spot	Fungus (Guignardia citricapra)
   Citrus Blight	Unknown
   Citrus Canker	Bacterium (Xanthomonas axonopodis pv.citri)
   Citrus Greening (also called Huanglongbing, HLB, or Yellow Dragon Disease)	Bacterium (Candidatus Liberibacter africanus, or Candidatus Liberibacter americanus, or Candidatus Liberibacter asiaticus)
   Citrus Leprosis	Citrus Leprosis Virus (CiLV)
   Citrus Psorosis (Scaly Bark)	Citrus Psorosis Virus (CPsV) (genus Ophiovirus)
   Citrus Scab	Fungus (Elsinoe fawcetti)
   Citrus Tristeza	Citrus Tristeza Virus (CTV)(genus Closterovirus)
   Citrus Variegated Chlorosis (CVC)	Bacterium (Xylella fastidiosa)
   Stubborn Disease of Citrus	Mycoplasmalike pathogen (Spiroplasma citri)
   Sweet Orange Scab	Fungus (Elsinoe australis)
   Exocortis	Exocortis viroid
   Hop stunt virioid (HSVd)	Cachexia/Xyloporosis

   Citrus Pest Chart 2

   Common Name	Scientific Name
   African Psylid	Trioza erytreae
   Asian grey weevil	Myllocerus undatus
   Avocado whitefly	Trialeurodes floridensis
   Black citrus aphid	Toxoptera aurantii
   Black citrus aphid	Toxoptera citricidus
   Branch and twig borer	Melalgus confertus
   Brown citrus aphid	Toxoptera citricida
   Caribbean black scale	Saissetia neglecta
   Citrus bud mite	Eriophyes sheldoni
   Citrus grey mite	Calacarus citrifolii
   Citrus root weevil	Pachnaeus litus
   Citrus snow scale	Unaspis citri
   Citrus thrips	Scirtothrips citri
   Diaprepes root weevil	Diaprepes abbreviatus
   False codling moth	Thaumatotibia leucotreta
   Insoncpicuous whitefly	Bemesia inconspicua
   Orange spiny whitefly	Aleurocanthus spiniferous
   Plumeria whitefly	Paraleurodes perseae
   Rufous scale	Selenaspidus articulatus
   Six-spotted mite	Eotetranychus sexmaculatus
   Yuma spider mite	Eotetranychus yumensis

Author: Robert J. Russell, Patrick B. Moody

Statutory Authority: Code of Ala. 1975, §§2-25-1, et seq.

History: New Rule: Filed June 9, 2009; effective July 14, 2009. Amended: Filed November 12, 2015; effective December 17, 2015.