Effect of humic-fulvic complex on flax fiber and seed yield characteristics
The aim of this research was to determine Humic-fulvic complex (HFC) efficacy in fiber flax cultivation of different fiber-type cultivars and to evaluate the quality of obtained products. The study of HS effect on fiber flax was carried out in the course of field experiments conducted in the Central Nonchernozem Zone of Russia (Moscow) in 2012-2014. The evaluated product (HFC) contained HS was used at 610 <sup>-2</sup> g L· <sup>1</sup> concentration, with 300 L ha <sup>-1</sup> of spraying liquid in the BBCH13 growth stage of flax and the second treatment was conducted two weeks later. Comparative analysis of the cellulose measurement in fiber, fat and protein content in different cultivars by near infrared spectroscopy, were conducted. The most beneficial effect of HFC was on fiber yield. The increase offiber yield changed from 1.3 dt ha <sup>-1</sup> (16.0%) to 2.7 dt ha <sup>-1</sup> (28.1%). HFC application increased the protein content in the flax seeds by 9.8-12.9%, fat content in the seeds by 9,0-12.5%, cellulose content in fiber by 6.0%-7.6%, compared to control.