Efekti kontaktnih fungicida u zaštiti jabuke od Venturia inaequalis (Cooke) winter / Effect of contact fungicides on management of Venturia inaequalis (Cooke) winter on apple
2016
Stević, Milan (Poljoprivredni fakultet, Beograd (Srbija)) | Pavlović, Biljana | Šević, Milan (Institut za povrtarstvo, Smederevska Palanka (Srbija))
During the season 2016, the biological efficacy of contact fungicides in apple protection from the apple scab, caused by fungus Venturia inaequalis, was performed. The experiments were conducted in an experimental orchard at the location of OŠD Radmilovac (cv Idared) and commercial orchard on the location of Krćevac (Topola) (cv Mucu). The trials were performed as a randomized block system in four repetitions (EPPO, 2012). Fungicide treatments were performed using knap sprayer type Solo 423, with 1000 l ha-1 of suspension consumption. A total of seven treatment, starting from the growth stages of ''mouse ear'' (BBCH 54), were done.Favorable agro-meteorological conditions have resulted in the significant disease incidence in control (untreated) plots. At the site of the OŠD Radmilovac the intensity of disease determined in control plots was 28.4% on the leaves, and 7.3% on fruits, while on the locality of Krćevac, diseases occurrence on the leaves and fruits was 91.5% and 7.9%, respectively. Application of multi-site fungicides resulted in good efficacy of mancozeb (87.4 to 100%), dithianon (83.1 to 100%), metiram (86.6 to 95.3%) and captan (89.8 to 100%), respectively.
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