Influence of complex application of mineral fertilizers, regulators of height and biologics on the productivity and quality of flax oily on sod-podzolic light loamy soil

Abstract

The article presents the results of studies for an average of three years with oilseed flax of the Brestsky variety, conducted in the north-eastern part of Belarus on sodpodzolic light loamy soil. In field experiments, the influence of the integrated use of mineral fertilizers, plant growth regulators and biological products on the yield and quality of flax products was studied.

The most effective was the use of brassinosteroids (epin and homobrassinolide) in two doses: with seeds during their encrustation and spraying of crops in the «herringbone» phase against the background of a full mineral fertilizer at a dose of N₄₅P₆₀K₉₀. At the same time, the yield of seeds was 16,7–17,2 c/ha with an oil content of 49,7–50,1%; the yield of straw was 41,7–42,3 c/ha with an average number of 0,5– 1,0 units. The high efficiency of flax seed inoculation with binary microbial preparation Biolinum against the background of complete mineral nutrition (N₄₅P₃₀K₉₀) was noted. At this level of nutrition in the experiments, an average of 17,6 c/ha of seeds with a fat content of 50,8 % and 42,2 c/ha of straw with an average number of 0,75–1,00 units were obtained over three years.