SciELO - Scientific Electronic Library Online

vol.70 issue1Macro and micronutrient concentration and accumulation in tuber of potato cultivars as affected by nitrogenDamage caused by South American Fruit Fly in grapes cultivars author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links



Print version ISSN 0006-8705


ROSSETTO, Marcos Paulo; AZEVEDO, Fernando Alves de; MARTELLI, Ivan Bortolato  and  SCHINOR, Evandro Henrique. Evaluation of citrus black spot in diferent varieties of sweet orange. Bragantia [online]. 2011, vol.70, n.1, pp.58-63. ISSN 0006-8705.

The citrus black spot - CBS (Guignardia citricarpa Kiely) has been responsible for great losses in Brazil, where all commercial varieties of sweet orange are susceptible. Given the economic losses that this disease causes to the brazilian citrus industry, this study aimed to evaluate the susceptibility of sweet orange varieties with late harvest to CBS. A total of 36 varieties were evaluated in Cordeirópolis city, and 35 located at Conchal city, in two years (2007 and 2008), both in São Paulo State, Brazil, in randomized block design assays with three replications. By using a diagrammatic scale specific to the CBS, the severity of CBS was quantified between the months from June to November (2007 and 2008), data was used to calculate the area under disease progress curve. All varieties were susceptible to CBS, however Imperial and Valência Pálida Israel were less susceptible than the others at both locations.

Keywords : Guignardia citricarpa; Citrus sinensis; scion variety.

        · abstract in Portuguese     · text in Portuguese     · Portuguese ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License