Biologinės kilmės preparatų ir tarpinio pasėlio įtaka septoriozės paplitimui

Abstract

The experiment has started in 2017 and will continue until 2021. The experiment is performed at the Experimental Station of the Vytautas Magnus University Agriculture Academy. The article presents the results of research conducted in 2020. In 2018 spring wheat was grown at the site of the experiment. The granulometric composition of the soil is light loam on medium and heavy loam. A two-factor field experiment was performed. The spring wheat variety ‘Wicki’ was selected for the study. The test fields are divided into equal 60 m2 fields. 4 randomized iterations were applied. The field tests were performed according to the following scheme: Factor A - tillage technology: 1. Zero tillage + white mustard catch crop; 2. Bearish tillage. Factor B - soil quality improvement and risk reduction measures: N8 - compensatory nitrogen 8 kg t-1 straw, without biological preparations; F - Fosfix 1l ha-1; R - Ruinex 1l ha-1; P - Penergetic k 0.2 l ha-1; A - Azofix 1 l ha-1; R + P - Ruinex 1l ha-1 + Penergetic k 0.2 l ha-1; R + A - Ruinex 1 l ha-1 + Azofix 0.5 l ha-1; P + A - Penergetic k 0.2 l ha-1 + Azofix 1 l ha-1; R + P + A - Ruinex 1l ha-1 + Penergetic k 0.2 l ha-1 + Azofix 0.5 l ha-1. In the flag leaf stage (BBCH 38–40), the average number of leaves affected by septorosis in bearish tillage technology was 0.82% more than zero tillage. With the application of zero tillage technology together with the catch crop, the majority of septorosis-damaged leaves were found in variant with the preparation of Azofix 1l ha-1, and in the bearish tillage technology Ruinex 1l ha-1 + Azofix 0.5 l ha-1. The intensity of the disease was low (LPI 0.3-1.03), no significant effect of the studied measures was found.[...]