Influence of protective and stimulating compositions during presowing treatment of seeds on seed infection, field germination and development of diseases in fiber flax crops

Abstract

The article presents the results of studying the effectiveness of pre-sowing treatment of fiber flax seeds with protective- stimulating compositions (ZSS) based on the biopreparation Biolinum, Zh (2,0 l/t), the disinfectant Vitaros, VSK (1,5 l/t) and microfertilizer Ecogum of various grades (0,5 l/t). The maximum increase in the field germination of seeds in relation to the control on average for 2018–2020 was 2,3 % under the influence of the composition Biolinum + Ecogum zinc, copper, boron- complex, and plant storability – 1,9 % when using ZSS Biolinum + Ecogum Bio and Biolinum + Ecogum Bio + Vitaros. The use of ZSS contributed to the reduction of seminal infection by 17,3 %. The maximum reduction in the total infection of seeds with diseases with a biological efficiency of 62,0 % was achieved under the influence of ZSS Biolinum + Ecogum zinc complex + Vitaros, Biolinum + Ecogum Bio + Vitaros and Biolinum + Ecogum zinc, copper, boron complex + Vitaros. These ZSSs provide the maximum effect in reducing the development of diseases in fiber flax crops at the stage of early yellow ripeness: biological effectiveness against anthracnose was 63,0–66,7 %, fusarium – 70,0– 93,3 %, sallow – 79,3–80,3 %.