Cukrinių runkelių rudmargės plitimo kontrolė cheminėmis priemonėmis

Abstract

Cercospora beticola is the one of the most important primary leaf pathogen of sugar beets in Lithuania. Research designed to determine the effect of chemical plant control against Cercospora leaf spot in sugar beet and sugar beet root yield. The research was made in the Rumokai Experimental Station of the Lithuanian Research Centre for Agriculture and Forestry in 2012. There were tested efficiency of 6 fungicides: Bumper super (prochloraze + propiconazole); Folicur (tebuconazole); Impact (flutriafol); Maredo (epoxiconazole); Opera N (pyraclostrobin + epoxiconazole); Tango super (fenpropimorph + epoxiconazole). During the experimental period, the Cercospora leaf spot disease in untreated the sugar beet plants reached 11.905 %. The most effective fungicide was Maredo (1 l ha-1). Its efficiency was highest and reached 94.19 %. The highest significant root yield for the crop was reached in the once treatment field fungicide Impact (additional root yield was 14 t ha-1) and the fungicide Tango super (13.8 t ha-1)