Effects of cyflufenamid in the control of apple powdery mildew (Podosphaera leucotricha)

Abstract

During 2019, the examination of cyflufenamid efficacy in apple protection from powdery mildew, caused by fungus Podosphaera leucotricha, was performed. The experiments were conducted in the orchards at the following locations: OŠD Radmilovac, Vinča (Topola), Kukujevci (Šid) and Donja Kravarica (Lučani), as a completely randomized block system in four replications (EPPO, 1999). The application of fungicides was performed using motorized mist blower sprayer type Solo 423, with water consumption of 1000 l ha-1. Starting from the growth stage "half-inch green" (BBCH 56-57) to the growth stage "beginning of fruit development" (BBCH 70-73), a total of five treatments were done. Cyflamid has shown high efficacy in the control of P. leucotricha. Effective protection of apple was achieved in the orchards at all four localities. At the locality Radmilovac, the efficacy was 98.8%, at the locality Vinča 96.2%. At the localites Kukujevci and Donja Kravarica, the efficacy was 96.7 and 98.8%, respectively

Tokom 2019. godine vršeno je ispitivanje efikasnosti preparata Cyflamid (a. s. ciflufenamid, 50 g/l) u zaštiti jabuke od prouzrokovača pepelnice (Podosphaera leucotricha). Ogledi su izvedeni na lokalitetima OŠD Radmilovac, Vinča (Topola), Kukujevci (Šid) i Donja Kravarica (Lučani), po potpuno slučajnom blok sistemu u četiri ponavljanja (EPPO, 1999). Primena fungicida vršena je leđnim atomizerom tipa Solo 423 uz utrošak vode od 1000 l/ha. Izvršeno je ukupno pet tretiranja počevši od fenofaze "zeleni buketić" (BBCH 56-57) do početka plodonošenja (BBCH 70-73). Ciflufenamid je ispoljio izuzetno visoku efikasnost u suzbijanju prouzrokovača pepelnice jabuke, na sva četiri lokaliteta. Na lokalitetu Radmilovac efikasnost je iznosila 98,8%. U Vinči efikasnost je bila 96,2%, dok je na lokalitetima Kukujevci i na lokalitetu Donja Kravarica utvrđena efikasnost 96,7 odnosno 98,8%.