Efikasnost različitih kombinacija fungicida u suzbijanju prouzrokovača mrežaste pegavosti ječma

Abstract

Ispitivana je efikasnost sedam različitih kombinacija fungicida (epoksikonazol + metkonazol, boskalid + epoksikonazol, piraklostrobin + epoksikonazol, protiokonazol + tebukonazol, pikoksistrobin + ciprokonazol, azoksistrobin + ciprokonazol i spiroksamin + tebukonazol + triadimenol) u suzbijanju prouzrokovača mrežaste pegavosti ječma Drechslera teres, kao i njihov uticaj na prinos tokom 2010. i 2011. godine. Najveću efikasnost u obe ispitivane godine ispoljila su dva tretmana kombinacijom fungicida piraklostrobin + epoksikonazol primenjenom u količini 1.0 l ha-1. Kombinacije fungicida epoksikonazol + metkonazol i spiroksamin + tebukonazol + triadimenol su pokazale najslabije delovanje na prouzrokovača mrežaste pegavosti ječma, kao i najmanje povećanje prinosa u poređenju sa kontrolom.

Seven fungicide mixtures (epoxiconazol + metconazole, boscalid + epoxiconazole, pyraclostrobin + epoxiconazole, prothioconazole + tebuconazole, picoxistrobin + cyproconazole, azoxystrobin + cyproconazole and spiroxamine + tebuconazole + triadimenol) were evaluated for control of net blotch of barley caused by Drechslera teres, as well as yield losses, over the 2010 and 2011 growing seasons. Two applications of the fungicide combination pyraclostrobin + epoxiconazole at the rate of 1.0 l ha-1 were the most effective treatment in controlling the disease and improving yield in both experimental years. Treatments with the fungicide mixtures epoxiconazol + metconazole and spiroxamine + tebuconazole + triadimenol showed the least effectiveness in disease control, as well as yield increase.