Evaluation of fungicides efficiency for cucumber protection against ascochyta blight

Abstract

To decrease ascochytosis severity testing has been done and the regulations of fungicides application have been developed in protected ground cucumber plantings. Based on the results of the obtained data it is determined that after two times of Cydeli Top 140, DK application at the rate of 1,0 l/ha, its biological efficiency has been higher than the wide-used fungicide Switch, WDG (1,0 kg/ha) and has made during winter-spring crop rotation 65,3 %, during summer-autumn – 56,2 %, what has given the opportunity to keep 16,7 and 12,5 % of yield, accordingly.