Effectiveness of herbicide tank mixtures in oil flax cultivation under conditions of zones of unstable and insufficient moistening in the Western Ciscaucasia

We carried out the research in 20182020 to identify effective herbicide tank mixtures on oil flax under conditions of zones of unstable and insufficient moistening of the Western Ciscaucasia and to determine their impact on productivity and economic effectiveness of crop cultivation. We used established procedures of carrying out field agrotechnical experiments with oil crops. The object of research was oil flax varieties of breeding of V.S. Pustovoit All-Russian Research Institute of Oil Crops: in the zone of unstable moistening on leached chernozem (Krasnodar) FLIZ, in the zone of insufficient moistening on ordinary chernozem (vil. Oporny, Rostov region) Raduga. In the research years, the average yield of oi flax in the zone of unstable moistening was 1.29 t/ha, in the zone of insufficient moistening - 1.09 t/ha. The application of tank mixtures Miura, EC (1.2 l/ha) + Tifi, WDG (0.025 kg/ha) and Miura, EC (1.2 l/ha) + Magnum, WDG (0.01 kg/ha) reduces crop productivity, so they are not recommended for use in oil flax cultivation. We established the best effectiveness in the zone of unstable moistening with application of the tank mixture Miura, EC (1.2 l/ha) + Herbitox, SC (1.0 l/ha), in the zone of insufficient moistening - Miura, EC (1.2 l/ha) + Sekator Turbo, OD (0.1 l/ha).