Abonyi, F.Holb, I. J.2021-06-282021-06-282007-03-19International Journal of Horticultural Science, Vol. 13 No. 1 (2007) , 11-13.1585-0404https://hdl.handle.net/2437/314424Effects or sanitation practices were evaluated on primary and autumn infection by Venturia inaequalis in an organic apple orchard at Eperjeske on the moderately scab-susceptible apple cultivar Jonathan in 2005 and 2006. Evaluated sanitation practices were: i) collection of fallen leaves in autumn; ii) destroying fallen leaves by disc cultivation in autumn; iii) spraying fallen leaves with 2% lime sulphur in autumn; iv) spraying fallen leaves with 2% lime sulphur in autumn and then collection of fallen leaves in autumn; and v) untreated control. In both years, most sanitation practices reduced significantly (P< 0.05) scab incidence in the primary infection periods compared to untreated control. The highest leaf scab incidence was observed in the untreated plots (26:2 and 24.3% in 2005 and 2006, respectively), while the lowest was in the treatments of spraying fallen leaves with 2% lime sulphur combined with collection of fallen leaves (11.7 and 12.3% in 2005 and 2006, respectively).application/pdfleaf litter densityascospore productionapple scabVenturia inaequalisdisease incidenceenvironmentally- benign apple productionhigh density apple orchardMalus x domestica Bork.folyóiratcikkOpen AccessInternational Journal of Horticultural Sciencehttps://doi.org/10.31421/IJHS/13/1/687International Journal of Horticultural Science113Int. j. hortic. sci.2676-931X