نوع مقاله : مروری
نویسنده
استاد
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسنده [English]
Blast and black pit disease of citrus has been known to be caused by Pseudomonas syringae pv. syringae for several decades. The bacterial incitant of the disease has been rising to over 10 species in recent years. The inciting bacterial species, at the present, consists of P. viridiflava, P. lurida, P. moraviensis, P. simiae, P. cerasi, P. caspiana, P. kairouanensis and P. nabeulensis, the last three being novel species of Pseudomonas. The number of citrus-producing countries affected by the disease appears to be increasing as well. The relative susceptibility of citrus species and cultivars to the disease varies, and some, like kumquat, a few navel oranges, and some mandarins, are very susceptible, while most lemons are resistant to the blast state but sensitive to black pit. The disease control measures presently recommended and practiced are spraying with copper fungicides, pruning out dying shoots and control of weeds in and around groves.
کلیدواژهها [English]
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