Žemės dirbimo įtaka ligų plitimui skirtingų veislių žieminių rapsų pasėlyje

Abstract

A field experiment was carried out in 2010–2012 in Akmene district Kruopiai. The soil of experimental site is Endo-calcari-Endohypogleyic Cambisol. The objective of the experiment – to evaluate the influence of soil tillage on diseases spreading in winter rape crop of different cultivars. Soil tillage significantly influenced percent of infected plants of conventional cultivar by Leptosphaeria spp. in winter rape crops. The higher percent of infected plants and disease intensity was established in hybrid winter rape crop, but significant didfferences were established only in the second year of experiment. No significant influence of soil tillage and cultivar on Alternaria brassicae spreading in winter rape crop was established. The lower percent of infected siliques was investigated in winter rape crop of conventional cultivar, but the lower disease intensity was investigated in winter rape crops of hybrid cultivars. More intensive spreading of Leptosphaeria spp. and Alternaria brassicae was established in 2010–2011 compared with 2011–2012. Meteorologi-cal conditions influenced deseases spreading