dc.contributorFundecitrus
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:22:55Z
dc.date.available2014-05-20T15:22:55Z
dc.date.created2014-05-20T15:22:55Z
dc.date.issued2007-12-01
dc.identifierEuropean Journal of Plant Pathology. Dordrecht: Springer, v. 119, n. 4, p. 463-468, 2007.
dc.identifier0929-1873
dc.identifierhttp://hdl.handle.net/11449/33810
dc.identifier10.1007/s10658-007-9173-1
dc.identifierWOS:000250580700011
dc.description.abstractThe huanglongbing (HLB) disease of citrus trees, caused by Candidatus Liberibacter asiaticus and Ca. Liberibacter americanus, was first reported in Brazil in March, 2004. The presence of the disease has caused serious concerns among growers. Pruning experiments were conducted to determine if removal of symptomatic branches or the entire canopy (decapitation) would eliminate infected tissues and save HLB-affected trees. Pruning was done in five blocks on a total of 592 3- to 16 year-old 'Valencia', 'Hamlin' or 'Pera' sweet orange trees showing no symptoms or with two levels of symptom severity. Ten decapitated trees per block were caged and all trees were treated with insecticides to control the psyllid vector, Diaphorina citri. Mottled leaves reappeared on most symptomatic (69.2%) as well on some asymptomatic (7.6%) pruned trees, regardless of age, variety, and pruning procedure. Presence of the pathogen (Ca. Liberibacter americanus) in all symptomatic trees was confirmed by PCR. In general, the greater the symptom severity before pruning the lower the percentage of trees that remained asymptomatic after pruning.
dc.languageeng
dc.publisherSpringer
dc.relationEuropean Journal of Plant Pathology
dc.relation1.466
dc.relation0,721
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectgreening
dc.subjectinoculum source
dc.subjectDiaphorina citri
dc.subjectdisease management
dc.titleIneffectiveness of pruning to control citrus huanglongbing caused by Candidatus Liberibacter americanus
dc.typeArtículos de revistas


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