The influence of biological preparations and mineral nutrition background on flax productivity in the conditions of Tver territory

The most promising element of flax growing technologies in terms of increasing productivity and product quality, as well as the length of the payback period of investments is fertilizing system. The aim of the research was to study the productivity of flax variety Tverskoy under the influence of biological preparations when grown on different backgrounds of mineral nutrition. The tasks were to assess the characteristics of the formation of the yield of seeds, straw, fiber and flax oil under the influence of fertilizers conditions; to calculate economic efficiency of the feasibility of using developed agricultural practices. The studies were conducted in 2018-2019 in a two-factor field experiment on experimental field of Tver State Agricultural Academy on well-cultivated sod-medium-podzolic light loamy soil. The following factors were studied in the experiment: A - background of mineral nutrition: 1 - natural fertility; 2 - N60P60K60; 3 - N45P45K45 + humus meliorant Nisaba (150 kg/hectare); B - foliar dressing of flax in “fur-tree” phase (100 l/ hectare): 1 - without dressing; 2 - Azotovit (0...